diff --git a/.traefik.yml b/.traefik.yml
new file mode 100644
index 0000000..bd17db5
--- /dev/null
+++ b/.traefik.yml
@@ -0,0 +1,16 @@
+displayName: Ip filter or Basic auth
+type: middleware
+
+import: github.com/alexandreh2ag/traefik-ipfilter-basicauth
+
+summary: 'Restricts access to your services by ip whitelist or basic auth'
+
+testData:
+  basicAuth:
+    realm: "Realm"
+    users:
+      - traefik:$apr1$imy7rq16$PbXJYj5lsqZ71HoIBfm/T0 # traefik / traefik
+  ipWhiteList:
+    sourceRange:
+      - "127.0.0.1"
+      - "10.0.0.1/32"
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..6c9f1f2
--- /dev/null
+++ b/README.md
@@ -0,0 +1,44 @@
+# Ip Filter - Basic auth
+
+Ip Filter - Basic auth is a middleware plugin for [Traefik](https://github.com/traefik/traefik) which try to authorize client by IP address or at least by Basic auth.
+
+## Configuration
+
+### Static
+
+```toml
+[pilot]
+  token = "xxxx"
+
+[experimental.plugins.ipFilter_basicAuth]
+  modulename = "github.com/alexandreh2ag/traefik-ipfilter-basicauth"
+  version = "vX.X.X"
+```
+
+### Dynamic
+
+To configure the `Ip Filter - Basic auth` plugin you should create a [middleware](https://doc.traefik.io/traefik/middlewares/overview/) in
+your dynamic configuration as explained [here](https://doc.traefik.io/traefik/middlewares/overview/).
+
+You must define at least one source range IP and one user from configuration or file.
+
+The configuration of middleware is quite similar then traefik middlewares ([IPWhiteList](https://doc.traefik.io/traefik/middlewares/http/ipwhitelist/) / [BasicAuth](https://doc.traefik.io/traefik/middlewares/http/basicauth/)).
+
+```yaml
+http:
+  middlewares:
+    my-ipFilter_basicAuth:
+      plugin:
+        ipFilter_basicAuth:
+          basicAuth:
+            realm: "Realm"
+            usersFile: "/path/to/my/usersfile"
+            users:
+              - traefik:$apr1$imy7rq16$PbXJYj5lsqZ71HoIBfm/T0 # traefik / traefik
+            headerField: "X-WebAuth-User"
+            removeHeader: true
+          ipWhiteList:
+            sourceRange:
+              - "127.0.0.1"
+              - "10.0.0.1/32"
+```
diff --git a/auth.go b/auth.go
new file mode 100644
index 0000000..2a6293b
--- /dev/null
+++ b/auth.go
@@ -0,0 +1,65 @@
+package traefik_ipfilter_basicauth
+
+import (
+	"os"
+	"strings"
+)
+
+// UserParser Parses a string and return a userName/userHash. An error if the format of the string is incorrect.
+type UserParser func(user string) (string, string, error)
+
+const (
+	defaultRealm        = "traefik"
+	authorizationHeader = "Authorization"
+)
+
+func getUsers(fileName string, appendUsers []string, parser UserParser) (map[string]string, error) {
+	users, err := loadUsers(fileName, appendUsers)
+	if err != nil {
+		return nil, err
+	}
+
+	userMap := make(map[string]string)
+	for _, user := range users {
+		userName, userHash, err := parser(user)
+		if err != nil {
+			return nil, err
+		}
+		userMap[userName] = userHash
+	}
+
+	return userMap, nil
+}
+
+func loadUsers(fileName string, appendUsers []string) ([]string, error) {
+	var users []string
+	var err error
+
+	if fileName != "" {
+		users, err = getLinesFromFile(fileName)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return append(users, appendUsers...), nil
+}
+
+func getLinesFromFile(filename string) ([]string, error) {
+	dat, err := os.ReadFile(filename)
+	if err != nil {
+		return nil, err
+	}
+
+	// Trim lines and filter out blanks
+	rawLines := strings.Split(string(dat), "\n")
+	var filteredLines []string
+	for _, rawLine := range rawLines {
+		line := strings.TrimSpace(rawLine)
+		if line != "" && !strings.HasPrefix(line, "#") {
+			filteredLines = append(filteredLines, line)
+		}
+	}
+
+	return filteredLines, nil
+}
diff --git a/checker.go b/checker.go
new file mode 100644
index 0000000..12afb92
--- /dev/null
+++ b/checker.go
@@ -0,0 +1,101 @@
+package traefik_ipfilter_basicauth
+
+import (
+	"errors"
+	"fmt"
+	"net"
+	"strings"
+)
+
+// Checker allows to check that addresses are in a trusted IPs.
+type Checker struct {
+	authorizedIPs    []*net.IP
+	authorizedIPsNet []*net.IPNet
+}
+
+// NewChecker builds a new Checker given a list of CIDR-Strings to trusted IPs.
+func NewChecker(trustedIPs []string) (*Checker, error) {
+	if len(trustedIPs) == 0 {
+		return nil, errors.New("no trusted IPs provided")
+	}
+
+	checker := &Checker{}
+
+	for _, ipMask := range trustedIPs {
+		if ipAddr := net.ParseIP(ipMask); ipAddr != nil {
+			checker.authorizedIPs = append(checker.authorizedIPs, &ipAddr)
+			continue
+		}
+
+		_, ipAddr, err := net.ParseCIDR(ipMask)
+		if err != nil {
+			return nil, fmt.Errorf("parsing CIDR trusted IPs %s: %w", ipAddr, err)
+		}
+		checker.authorizedIPsNet = append(checker.authorizedIPsNet, ipAddr)
+	}
+
+	return checker, nil
+}
+
+// IsAuthorized checks if provided request is authorized by the trusted IPs.
+func (ip *Checker) IsAuthorized(addr string) error {
+	var invalidMatches []string
+
+	host, _, err := net.SplitHostPort(addr)
+	if err != nil {
+		host = addr
+	}
+
+	ok, err := ip.Contains(host)
+	if err != nil {
+		return err
+	}
+
+	if !ok {
+		invalidMatches = append(invalidMatches, addr)
+		return fmt.Errorf("%q matched none of the trusted IPs", strings.Join(invalidMatches, ", "))
+	}
+
+	return nil
+}
+
+// Contains checks if provided address is in the trusted IPs.
+func (ip *Checker) Contains(addr string) (bool, error) {
+	if len(addr) == 0 {
+		return false, errors.New("empty IP address")
+	}
+
+	ipAddr, err := parseIP(addr)
+	if err != nil {
+		return false, fmt.Errorf("unable to parse address: %s: %w", addr, err)
+	}
+
+	return ip.ContainsIP(ipAddr), nil
+}
+
+// ContainsIP checks if provided address is in the trusted IPs.
+func (ip *Checker) ContainsIP(addr net.IP) bool {
+	for _, authorizedIP := range ip.authorizedIPs {
+		fmt.Println("Client IP: " + addr.String() + " - ip check : " + authorizedIP.String())
+		if authorizedIP.Equal(addr) {
+			return true
+		}
+	}
+
+	for _, authorizedNet := range ip.authorizedIPsNet {
+		if authorizedNet.Contains(addr) {
+			return true
+		}
+	}
+
+	return false
+}
+
+func parseIP(addr string) (net.IP, error) {
+	userIP := net.ParseIP(addr)
+	if userIP == nil {
+		return nil, fmt.Errorf("can't parse IP from address %s", addr)
+	}
+
+	return userIP, nil
+}
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..6a2f4ec
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,9 @@
+module github.com/alexandreh2ag/traefik-ipfilter-basicauth
+
+go 1.17
+
+require (
+	github.com/abbot/go-http-auth v0.4.0 // indirect
+	golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e // indirect
+	golang.org/x/net v0.0.0-20220614195744-fb05da6f9022 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..3e5fdd4
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,6 @@
+github.com/abbot/go-http-auth v0.4.0 h1:QjmvZ5gSC7jm3Zg54DqWE/T5m1t2AfDu6QlXJT0EVT0=
+github.com/abbot/go-http-auth v0.4.0/go.mod h1:Cz6ARTIzApMJDzh5bRMSUou6UMSp0IEXg9km/ci7TJM=
+golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e h1:T8NU3HyQ8ClP4SEE+KbFlg6n0NhuTsN4MyznaarGsZM=
+golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/net v0.0.0-20220614195744-fb05da6f9022 h1:0qjDla5xICC2suMtyRH/QqX3B1btXTfNsIt/i4LFgO0=
+golang.org/x/net v0.0.0-20220614195744-fb05da6f9022/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
diff --git a/middleware.go b/middleware.go
new file mode 100644
index 0000000..c9cbbe6
--- /dev/null
+++ b/middleware.go
@@ -0,0 +1,130 @@
+package traefik_ipfilter_basicauth
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+
+	goauth "github.com/abbot/go-http-auth"
+)
+
+type BasicAuth struct {
+	Users        []string `json:"users,omitempty" toml:"users,omitempty" yaml:"users,omitempty" loggable:"false"`
+	UsersFile    string   `json:"usersFile,omitempty" toml:"usersFile,omitempty" yaml:"usersFile,omitempty"`
+	Realm        string   `json:"realm,omitempty" toml:"realm,omitempty" yaml:"realm,omitempty"`
+	RemoveHeader bool     `json:"removeHeader,omitempty" toml:"removeHeader,omitempty" yaml:"removeHeader,omitempty" export:"true"`
+	HeaderField  string   `json:"headerField,omitempty" toml:"headerField,omitempty" yaml:"headerField,omitempty" export:"true"`
+}
+
+type IPWhiteList struct {
+	SourceRange []string `json:"sourceRange,omitempty" toml:"sourceRange,omitempty" yaml:"sourceRange,omitempty"`
+}
+
+// Config the plugin configuration.
+type Config struct {
+	BasicAuth   BasicAuth   `json:"basicAuth,omitempty" toml:"basicAuth,omitempty" yaml:"basicAuth,omitempty"`
+	IPWhiteList IPWhiteList `json:"ipWhiteList,omitempty" toml:"ipWhiteList,omitempty" yaml:"ipWhiteList,omitempty"`
+}
+
+// CreateConfig creates the default plugin configuration.
+func CreateConfig() *Config {
+	return &Config{}
+}
+
+// Middleware a Middleware plugin.
+type Middleware struct {
+	auth         *goauth.BasicAuth
+	next         http.Handler
+	users        map[string]string
+	headerField  string
+	removeHeader bool
+	whiteLister  *Checker
+	name         string
+}
+
+// New created a new Middleware plugin.
+func New(ctx context.Context, next http.Handler, config *Config, name string) (http.Handler, error) {
+	if len(config.IPWhiteList.SourceRange) == 0 {
+		return nil, errors.New("sourceRange is empty, IPWhiteLister not created")
+	}
+
+	checker, err := NewChecker(config.IPWhiteList.SourceRange)
+	if err != nil {
+		return nil, fmt.Errorf("cannot parse CIDR whitelist %s: %w", config.IPWhiteList.SourceRange, err)
+	}
+
+	users, err := getUsers(config.BasicAuth.UsersFile, config.BasicAuth.Users, basicUserParser)
+	if err != nil {
+		return nil, err
+	}
+	m := &Middleware{
+		users:        users,
+		whiteLister:  checker,
+		removeHeader: config.BasicAuth.RemoveHeader,
+		headerField:  config.BasicAuth.HeaderField,
+		next:         next,
+		name:         name,
+	}
+	realm := defaultRealm
+	if len(config.BasicAuth.Realm) > 0 {
+		realm = config.BasicAuth.Realm
+	}
+	m.auth = &goauth.BasicAuth{Realm: realm, Secrets: m.secretBasic}
+
+	return m, nil
+}
+
+func (m *Middleware) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
+	user := ""
+	if req.RemoteAddr == "" {
+		fmt.Println("RemoteAddr is empty")
+		return
+	}
+
+	err := m.whiteLister.IsAuthorized(req.RemoteAddr)
+	if err != nil {
+		fmt.Println("Try basic auth")
+		ok := false
+		if user = m.auth.CheckAuth(req); user == "" {
+			ok = false
+		} else {
+			ok = true
+		}
+
+		if !ok {
+			m.auth.RequireAuth(rw, req)
+			fmt.Println("IP is not authorize and basic auth is not valid")
+			return
+		}
+	}
+	req.URL.User = url.User(user)
+	if m.headerField != "" {
+		req.Header[m.headerField] = []string{user}
+	}
+
+	if m.removeHeader {
+		req.Header.Del(authorizationHeader)
+	}
+
+	fmt.Println("Request authorized")
+	m.next.ServeHTTP(rw, req)
+}
+
+func (m *Middleware) secretBasic(user, realm string) string {
+	if secret, ok := m.users[user]; ok {
+		return secret
+	}
+
+	return ""
+}
+
+func basicUserParser(user string) (string, string, error) {
+	split := strings.Split(user, ":")
+	if len(split) != 2 {
+		return "", "", fmt.Errorf("error parsing BasicUser: %v", user)
+	}
+	return split[0], split[1], nil
+}
diff --git a/vendor/github.com/abbot/go-http-auth/.gitignore b/vendor/github.com/abbot/go-http-auth/.gitignore
new file mode 100644
index 0000000..112ea39
--- /dev/null
+++ b/vendor/github.com/abbot/go-http-auth/.gitignore
@@ -0,0 +1,5 @@
+*~
+*.a
+*.6
+*.out
+_testmain.go
diff --git a/vendor/github.com/abbot/go-http-auth/LICENSE b/vendor/github.com/abbot/go-http-auth/LICENSE
new file mode 100644
index 0000000..e454a52
--- /dev/null
+++ b/vendor/github.com/abbot/go-http-auth/LICENSE
@@ -0,0 +1,178 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
diff --git a/vendor/github.com/abbot/go-http-auth/Makefile b/vendor/github.com/abbot/go-http-auth/Makefile
new file mode 100644
index 0000000..25f208d
--- /dev/null
+++ b/vendor/github.com/abbot/go-http-auth/Makefile
@@ -0,0 +1,12 @@
+include $(GOROOT)/src/Make.inc
+
+TARG=auth_digest
+GOFILES=\
+	auth.go\
+	digest.go\
+	basic.go\
+	misc.go\
+	md5crypt.go\
+	users.go\
+
+include $(GOROOT)/src/Make.pkg
diff --git a/vendor/github.com/abbot/go-http-auth/README.md b/vendor/github.com/abbot/go-http-auth/README.md
new file mode 100644
index 0000000..73ae985
--- /dev/null
+++ b/vendor/github.com/abbot/go-http-auth/README.md
@@ -0,0 +1,71 @@
+HTTP Authentication implementation in Go
+========================================
+
+This is an implementation of HTTP Basic and HTTP Digest authentication
+in Go language. It is designed as a simple wrapper for
+http.RequestHandler functions.
+
+Features
+--------
+ 
+ * Supports HTTP Basic and HTTP Digest authentication.
+ * Supports htpasswd and htdigest formatted files.
+ * Automatic reloading of password files.
+ * Pluggable interface for user/password storage.
+ * Supports MD5, SHA1 and BCrypt for Basic authentication password storage.
+ * Configurable Digest nonce cache size with expiration.
+ * Wrapper for legacy http handlers (http.HandlerFunc interface)
+ 
+Example usage
+-------------
+
+This is a complete working example for Basic auth:
+
+    package main
+
+    import (
+            "fmt"
+            "net/http"
+
+            auth "github.com/abbot/go-http-auth"
+    )
+
+    func Secret(user, realm string) string {
+            if user == "john" {
+                    // password is "hello"
+                    return "$1$dlPL2MqE$oQmn16q49SqdmhenQuNgs1"
+            }
+            return ""
+    }
+
+    func handle(w http.ResponseWriter, r *auth.AuthenticatedRequest) {
+            fmt.Fprintf(w, "<html><body><h1>Hello, %s!</h1></body></html>", r.Username)
+    }
+
+    func main() {
+            authenticator := auth.NewBasicAuthenticator("example.com", Secret)
+            http.HandleFunc("/", authenticator.Wrap(handle))
+            http.ListenAndServe(":8080", nil)
+    }
+
+See more examples in the "examples" directory.
+
+Legal
+-----
+
+This module is developed under Apache 2.0 license, and can be used for
+open and proprietary projects.
+
+Copyright 2012-2013 Lev Shamardin
+
+Licensed under the Apache License, Version 2.0 (the "License"); you
+may not use this file or any other part of this project except in
+compliance with the License. You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+implied. See the License for the specific language governing
+permissions and limitations under the License.
diff --git a/vendor/github.com/abbot/go-http-auth/auth.go b/vendor/github.com/abbot/go-http-auth/auth.go
new file mode 100644
index 0000000..05ded16
--- /dev/null
+++ b/vendor/github.com/abbot/go-http-auth/auth.go
@@ -0,0 +1,109 @@
+// Package auth is an implementation of HTTP Basic and HTTP Digest authentication.
+package auth
+
+import (
+	"net/http"
+
+	"golang.org/x/net/context"
+)
+
+/*
+ Request handlers must take AuthenticatedRequest instead of http.Request
+*/
+type AuthenticatedRequest struct {
+	http.Request
+	/*
+	 Authenticated user name. Current API implies that Username is
+	 never empty, which means that authentication is always done
+	 before calling the request handler.
+	*/
+	Username string
+}
+
+/*
+ AuthenticatedHandlerFunc is like http.HandlerFunc, but takes
+ AuthenticatedRequest instead of http.Request
+*/
+type AuthenticatedHandlerFunc func(http.ResponseWriter, *AuthenticatedRequest)
+
+/*
+ Authenticator wraps an AuthenticatedHandlerFunc with
+ authentication-checking code.
+
+ Typical Authenticator usage is something like:
+
+   authenticator := SomeAuthenticator(...)
+   http.HandleFunc("/", authenticator(my_handler))
+
+ Authenticator wrapper checks the user authentication and calls the
+ wrapped function only after authentication has succeeded. Otherwise,
+ it returns a handler which initiates the authentication procedure.
+*/
+type Authenticator func(AuthenticatedHandlerFunc) http.HandlerFunc
+
+// Info contains authentication information for the request.
+type Info struct {
+	// Authenticated is set to true when request was authenticated
+	// successfully, i.e. username and password passed in request did
+	// pass the check.
+	Authenticated bool
+
+	// Username contains a user name passed in the request when
+	// Authenticated is true. It's value is undefined if Authenticated
+	// is false.
+	Username string
+
+	// ResponseHeaders contains extra headers that must be set by server
+	// when sending back HTTP response.
+	ResponseHeaders http.Header
+}
+
+// UpdateHeaders updates headers with this Info's ResponseHeaders. It is
+// safe to call this function on nil Info.
+func (i *Info) UpdateHeaders(headers http.Header) {
+	if i == nil {
+		return
+	}
+	for k, values := range i.ResponseHeaders {
+		for _, v := range values {
+			headers.Add(k, v)
+		}
+	}
+}
+
+type key int // used for context keys
+
+var infoKey key = 0
+
+type AuthenticatorInterface interface {
+	// NewContext returns a new context carrying authentication
+	// information extracted from the request.
+	NewContext(ctx context.Context, r *http.Request) context.Context
+
+	// Wrap returns an http.HandlerFunc which wraps
+	// AuthenticatedHandlerFunc with this authenticator's
+	// authentication checks.
+	Wrap(AuthenticatedHandlerFunc) http.HandlerFunc
+}
+
+// FromContext returns authentication information from the context or
+// nil if no such information present.
+func FromContext(ctx context.Context) *Info {
+	info, ok := ctx.Value(infoKey).(*Info)
+	if !ok {
+		return nil
+	}
+	return info
+}
+
+// AuthUsernameHeader is the header set by JustCheck functions. It
+// contains an authenticated username (if authentication was
+// successful).
+const AuthUsernameHeader = "X-Authenticated-Username"
+
+func JustCheck(auth AuthenticatorInterface, wrapped http.HandlerFunc) http.HandlerFunc {
+	return auth.Wrap(func(w http.ResponseWriter, ar *AuthenticatedRequest) {
+		ar.Header.Set(AuthUsernameHeader, ar.Username)
+		wrapped(w, &ar.Request)
+	})
+}
diff --git a/vendor/github.com/abbot/go-http-auth/basic.go b/vendor/github.com/abbot/go-http-auth/basic.go
new file mode 100644
index 0000000..b03dd58
--- /dev/null
+++ b/vendor/github.com/abbot/go-http-auth/basic.go
@@ -0,0 +1,163 @@
+package auth
+
+import (
+	"bytes"
+	"crypto/sha1"
+	"crypto/subtle"
+	"encoding/base64"
+	"errors"
+	"net/http"
+	"strings"
+
+	"golang.org/x/crypto/bcrypt"
+	"golang.org/x/net/context"
+)
+
+type compareFunc func(hashedPassword, password []byte) error
+
+var (
+	errMismatchedHashAndPassword = errors.New("mismatched hash and password")
+
+	compareFuncs = []struct {
+		prefix  string
+		compare compareFunc
+	}{
+		{"", compareMD5HashAndPassword}, // default compareFunc
+		{"{SHA}", compareShaHashAndPassword},
+		// Bcrypt is complicated. According to crypt(3) from
+		// crypt_blowfish version 1.3 (fetched from
+		// http://www.openwall.com/crypt/crypt_blowfish-1.3.tar.gz), there
+		// are three different has prefixes: "$2a$", used by versions up
+		// to 1.0.4, and "$2x$" and "$2y$", used in all later
+		// versions. "$2a$" has a known bug, "$2x$" was added as a
+		// migration path for systems with "$2a$" prefix and still has a
+		// bug, and only "$2y$" should be used by modern systems. The bug
+		// has something to do with handling of 8-bit characters. Since
+		// both "$2a$" and "$2x$" are deprecated, we are handling them the
+		// same way as "$2y$", which will yield correct results for 7-bit
+		// character passwords, but is wrong for 8-bit character
+		// passwords. You have to upgrade to "$2y$" if you want sant 8-bit
+		// character password support with bcrypt. To add to the mess,
+		// OpenBSD 5.5. introduced "$2b$" prefix, which behaves exactly
+		// like "$2y$" according to the same source.
+		{"$2a$", bcrypt.CompareHashAndPassword},
+		{"$2b$", bcrypt.CompareHashAndPassword},
+		{"$2x$", bcrypt.CompareHashAndPassword},
+		{"$2y$", bcrypt.CompareHashAndPassword},
+	}
+)
+
+type BasicAuth struct {
+	Realm   string
+	Secrets SecretProvider
+	// Headers used by authenticator. Set to ProxyHeaders to use with
+	// proxy server. When nil, NormalHeaders are used.
+	Headers *Headers
+}
+
+// check that BasicAuth implements AuthenticatorInterface
+var _ = (AuthenticatorInterface)((*BasicAuth)(nil))
+
+/*
+ Checks the username/password combination from the request. Returns
+ either an empty string (authentication failed) or the name of the
+ authenticated user.
+
+ Supports MD5 and SHA1 password entries
+*/
+func (a *BasicAuth) CheckAuth(r *http.Request) string {
+	s := strings.SplitN(r.Header.Get(a.Headers.V().Authorization), " ", 2)
+	if len(s) != 2 || s[0] != "Basic" {
+		return ""
+	}
+
+	b, err := base64.StdEncoding.DecodeString(s[1])
+	if err != nil {
+		return ""
+	}
+	pair := strings.SplitN(string(b), ":", 2)
+	if len(pair) != 2 {
+		return ""
+	}
+	user, password := pair[0], pair[1]
+	secret := a.Secrets(user, a.Realm)
+	if secret == "" {
+		return ""
+	}
+	compare := compareFuncs[0].compare
+	for _, cmp := range compareFuncs[1:] {
+		if strings.HasPrefix(secret, cmp.prefix) {
+			compare = cmp.compare
+			break
+		}
+	}
+	if compare([]byte(secret), []byte(password)) != nil {
+		return ""
+	}
+	return pair[0]
+}
+
+func compareShaHashAndPassword(hashedPassword, password []byte) error {
+	d := sha1.New()
+	d.Write(password)
+	if subtle.ConstantTimeCompare(hashedPassword[5:], []byte(base64.StdEncoding.EncodeToString(d.Sum(nil)))) != 1 {
+		return errMismatchedHashAndPassword
+	}
+	return nil
+}
+
+func compareMD5HashAndPassword(hashedPassword, password []byte) error {
+	parts := bytes.SplitN(hashedPassword, []byte("$"), 4)
+	if len(parts) != 4 {
+		return errMismatchedHashAndPassword
+	}
+	magic := []byte("$" + string(parts[1]) + "$")
+	salt := parts[2]
+	if subtle.ConstantTimeCompare(hashedPassword, MD5Crypt(password, salt, magic)) != 1 {
+		return errMismatchedHashAndPassword
+	}
+	return nil
+}
+
+/*
+ http.Handler for BasicAuth which initiates the authentication process
+ (or requires reauthentication).
+*/
+func (a *BasicAuth) RequireAuth(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set(contentType, a.Headers.V().UnauthContentType)
+	w.Header().Set(a.Headers.V().Authenticate, `Basic realm="`+a.Realm+`"`)
+	w.WriteHeader(a.Headers.V().UnauthCode)
+	w.Write([]byte(a.Headers.V().UnauthResponse))
+}
+
+/*
+ BasicAuthenticator returns a function, which wraps an
+ AuthenticatedHandlerFunc converting it to http.HandlerFunc. This
+ wrapper function checks the authentication and either sends back
+ required authentication headers, or calls the wrapped function with
+ authenticated username in the AuthenticatedRequest.
+*/
+func (a *BasicAuth) Wrap(wrapped AuthenticatedHandlerFunc) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if username := a.CheckAuth(r); username == "" {
+			a.RequireAuth(w, r)
+		} else {
+			ar := &AuthenticatedRequest{Request: *r, Username: username}
+			wrapped(w, ar)
+		}
+	}
+}
+
+// NewContext returns a context carrying authentication information for the request.
+func (a *BasicAuth) NewContext(ctx context.Context, r *http.Request) context.Context {
+	info := &Info{Username: a.CheckAuth(r), ResponseHeaders: make(http.Header)}
+	info.Authenticated = (info.Username != "")
+	if !info.Authenticated {
+		info.ResponseHeaders.Set(a.Headers.V().Authenticate, `Basic realm="`+a.Realm+`"`)
+	}
+	return context.WithValue(ctx, infoKey, info)
+}
+
+func NewBasicAuthenticator(realm string, secrets SecretProvider) *BasicAuth {
+	return &BasicAuth{Realm: realm, Secrets: secrets}
+}
diff --git a/vendor/github.com/abbot/go-http-auth/digest.go b/vendor/github.com/abbot/go-http-auth/digest.go
new file mode 100644
index 0000000..21b0933
--- /dev/null
+++ b/vendor/github.com/abbot/go-http-auth/digest.go
@@ -0,0 +1,274 @@
+package auth
+
+import (
+	"crypto/subtle"
+	"fmt"
+	"net/http"
+	"net/url"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"golang.org/x/net/context"
+)
+
+type digest_client struct {
+	nc        uint64
+	last_seen int64
+}
+
+type DigestAuth struct {
+	Realm            string
+	Opaque           string
+	Secrets          SecretProvider
+	PlainTextSecrets bool
+	IgnoreNonceCount bool
+	// Headers used by authenticator. Set to ProxyHeaders to use with
+	// proxy server. When nil, NormalHeaders are used.
+	Headers *Headers
+
+	/*
+	   Approximate size of Client's Cache. When actual number of
+	   tracked client nonces exceeds
+	   ClientCacheSize+ClientCacheTolerance, ClientCacheTolerance*2
+	   older entries are purged.
+	*/
+	ClientCacheSize      int
+	ClientCacheTolerance int
+
+	clients map[string]*digest_client
+	mutex   sync.Mutex
+}
+
+// check that DigestAuth implements AuthenticatorInterface
+var _ = (AuthenticatorInterface)((*DigestAuth)(nil))
+
+type digest_cache_entry struct {
+	nonce     string
+	last_seen int64
+}
+
+type digest_cache []digest_cache_entry
+
+func (c digest_cache) Less(i, j int) bool {
+	return c[i].last_seen < c[j].last_seen
+}
+
+func (c digest_cache) Len() int {
+	return len(c)
+}
+
+func (c digest_cache) Swap(i, j int) {
+	c[i], c[j] = c[j], c[i]
+}
+
+/*
+ Remove count oldest entries from DigestAuth.clients
+*/
+func (a *DigestAuth) Purge(count int) {
+	entries := make([]digest_cache_entry, 0, len(a.clients))
+	for nonce, client := range a.clients {
+		entries = append(entries, digest_cache_entry{nonce, client.last_seen})
+	}
+	cache := digest_cache(entries)
+	sort.Sort(cache)
+	for _, client := range cache[:count] {
+		delete(a.clients, client.nonce)
+	}
+}
+
+/*
+ http.Handler for DigestAuth which initiates the authentication process
+ (or requires reauthentication).
+*/
+func (a *DigestAuth) RequireAuth(w http.ResponseWriter, r *http.Request) {
+	if len(a.clients) > a.ClientCacheSize+a.ClientCacheTolerance {
+		a.Purge(a.ClientCacheTolerance * 2)
+	}
+	nonce := RandomKey()
+	a.clients[nonce] = &digest_client{nc: 0, last_seen: time.Now().UnixNano()}
+	w.Header().Set(contentType, a.Headers.V().UnauthContentType)
+	w.Header().Set(a.Headers.V().Authenticate,
+		fmt.Sprintf(`Digest realm="%s", nonce="%s", opaque="%s", algorithm="MD5", qop="auth"`,
+			a.Realm, nonce, a.Opaque))
+	w.WriteHeader(a.Headers.V().UnauthCode)
+	w.Write([]byte(a.Headers.V().UnauthResponse))
+}
+
+/*
+ Parse Authorization header from the http.Request. Returns a map of
+ auth parameters or nil if the header is not a valid parsable Digest
+ auth header.
+*/
+func DigestAuthParams(authorization string) map[string]string {
+	s := strings.SplitN(authorization, " ", 2)
+	if len(s) != 2 || s[0] != "Digest" {
+		return nil
+	}
+
+	return ParsePairs(s[1])
+}
+
+/*
+ Check if request contains valid authentication data. Returns a pair
+ of username, authinfo where username is the name of the authenticated
+ user or an empty string and authinfo is the contents for the optional
+ Authentication-Info response header.
+*/
+func (da *DigestAuth) CheckAuth(r *http.Request) (username string, authinfo *string) {
+	da.mutex.Lock()
+	defer da.mutex.Unlock()
+	username = ""
+	authinfo = nil
+	auth := DigestAuthParams(r.Header.Get(da.Headers.V().Authorization))
+	if auth == nil {
+		return "", nil
+	}
+	// RFC2617 Section 3.2.1 specifies that unset value of algorithm in
+	// WWW-Authenticate Response header should be treated as
+	// "MD5". According to section 3.2.2 the "algorithm" value in
+	// subsequent Request Authorization header must be set to whatever
+	// was supplied in the WWW-Authenticate Response header. This
+	// implementation always returns an algorithm in WWW-Authenticate
+	// header, however there seems to be broken clients in the wild
+	// which do not set the algorithm. Assume the unset algorithm in
+	// Authorization header to be equal to MD5.
+	if _, ok := auth["algorithm"]; !ok {
+		auth["algorithm"] = "MD5"
+	}
+	if da.Opaque != auth["opaque"] || auth["algorithm"] != "MD5" || auth["qop"] != "auth" {
+		return "", nil
+	}
+
+	// Check if the requested URI matches auth header
+	if r.RequestURI != auth["uri"] {
+		// We allow auth["uri"] to be a full path prefix of request-uri
+		// for some reason lost in history, which is probably wrong, but
+		// used to be like that for quite some time
+		// (https://tools.ietf.org/html/rfc2617#section-3.2.2 explicitly
+		// says that auth["uri"] is the request-uri).
+		//
+		// TODO: make an option to allow only strict checking.
+		switch u, err := url.Parse(auth["uri"]); {
+		case err != nil:
+			return "", nil
+		case r.URL == nil:
+			return "", nil
+		case len(u.Path) > len(r.URL.Path):
+			return "", nil
+		case !strings.HasPrefix(r.URL.Path, u.Path):
+			return "", nil
+		}
+	}
+
+	HA1 := da.Secrets(auth["username"], da.Realm)
+	if da.PlainTextSecrets {
+		HA1 = H(auth["username"] + ":" + da.Realm + ":" + HA1)
+	}
+	HA2 := H(r.Method + ":" + auth["uri"])
+	KD := H(strings.Join([]string{HA1, auth["nonce"], auth["nc"], auth["cnonce"], auth["qop"], HA2}, ":"))
+
+	if subtle.ConstantTimeCompare([]byte(KD), []byte(auth["response"])) != 1 {
+		return "", nil
+	}
+
+	// At this point crypto checks are completed and validated.
+	// Now check if the session is valid.
+
+	nc, err := strconv.ParseUint(auth["nc"], 16, 64)
+	if err != nil {
+		return "", nil
+	}
+
+	if client, ok := da.clients[auth["nonce"]]; !ok {
+		return "", nil
+	} else {
+		if client.nc != 0 && client.nc >= nc && !da.IgnoreNonceCount {
+			return "", nil
+		}
+		client.nc = nc
+		client.last_seen = time.Now().UnixNano()
+	}
+
+	resp_HA2 := H(":" + auth["uri"])
+	rspauth := H(strings.Join([]string{HA1, auth["nonce"], auth["nc"], auth["cnonce"], auth["qop"], resp_HA2}, ":"))
+
+	info := fmt.Sprintf(`qop="auth", rspauth="%s", cnonce="%s", nc="%s"`, rspauth, auth["cnonce"], auth["nc"])
+	return auth["username"], &info
+}
+
+/*
+ Default values for ClientCacheSize and ClientCacheTolerance for DigestAuth
+*/
+const DefaultClientCacheSize = 1000
+const DefaultClientCacheTolerance = 100
+
+/*
+ Wrap returns an Authenticator which uses HTTP Digest
+ authentication. Arguments:
+
+ realm: The authentication realm.
+
+ secrets: SecretProvider which must return HA1 digests for the same
+ realm as above.
+*/
+func (a *DigestAuth) Wrap(wrapped AuthenticatedHandlerFunc) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if username, authinfo := a.CheckAuth(r); username == "" {
+			a.RequireAuth(w, r)
+		} else {
+			ar := &AuthenticatedRequest{Request: *r, Username: username}
+			if authinfo != nil {
+				w.Header().Set(a.Headers.V().AuthInfo, *authinfo)
+			}
+			wrapped(w, ar)
+		}
+	}
+}
+
+/*
+ JustCheck returns function which converts an http.HandlerFunc into a
+ http.HandlerFunc which requires authentication. Username is passed as
+ an extra X-Authenticated-Username header.
+*/
+func (a *DigestAuth) JustCheck(wrapped http.HandlerFunc) http.HandlerFunc {
+	return a.Wrap(func(w http.ResponseWriter, ar *AuthenticatedRequest) {
+		ar.Header.Set(AuthUsernameHeader, ar.Username)
+		wrapped(w, &ar.Request)
+	})
+}
+
+// NewContext returns a context carrying authentication information for the request.
+func (a *DigestAuth) NewContext(ctx context.Context, r *http.Request) context.Context {
+	username, authinfo := a.CheckAuth(r)
+	info := &Info{Username: username, ResponseHeaders: make(http.Header)}
+	if username != "" {
+		info.Authenticated = true
+		info.ResponseHeaders.Set(a.Headers.V().AuthInfo, *authinfo)
+	} else {
+		// return back digest WWW-Authenticate header
+		if len(a.clients) > a.ClientCacheSize+a.ClientCacheTolerance {
+			a.Purge(a.ClientCacheTolerance * 2)
+		}
+		nonce := RandomKey()
+		a.clients[nonce] = &digest_client{nc: 0, last_seen: time.Now().UnixNano()}
+		info.ResponseHeaders.Set(a.Headers.V().Authenticate,
+			fmt.Sprintf(`Digest realm="%s", nonce="%s", opaque="%s", algorithm="MD5", qop="auth"`,
+				a.Realm, nonce, a.Opaque))
+	}
+	return context.WithValue(ctx, infoKey, info)
+}
+
+func NewDigestAuthenticator(realm string, secrets SecretProvider) *DigestAuth {
+	da := &DigestAuth{
+		Opaque:               RandomKey(),
+		Realm:                realm,
+		Secrets:              secrets,
+		PlainTextSecrets:     false,
+		ClientCacheSize:      DefaultClientCacheSize,
+		ClientCacheTolerance: DefaultClientCacheTolerance,
+		clients:              map[string]*digest_client{}}
+	return da
+}
diff --git a/vendor/github.com/abbot/go-http-auth/md5crypt.go b/vendor/github.com/abbot/go-http-auth/md5crypt.go
new file mode 100644
index 0000000..a7a031c
--- /dev/null
+++ b/vendor/github.com/abbot/go-http-auth/md5crypt.go
@@ -0,0 +1,92 @@
+package auth
+
+import "crypto/md5"
+import "strings"
+
+const itoa64 = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+
+var md5_crypt_swaps = [16]int{12, 6, 0, 13, 7, 1, 14, 8, 2, 15, 9, 3, 5, 10, 4, 11}
+
+type MD5Entry struct {
+	Magic, Salt, Hash []byte
+}
+
+func NewMD5Entry(e string) *MD5Entry {
+	parts := strings.SplitN(e, "$", 4)
+	if len(parts) != 4 {
+		return nil
+	}
+	return &MD5Entry{
+		Magic: []byte("$" + parts[1] + "$"),
+		Salt:  []byte(parts[2]),
+		Hash:  []byte(parts[3]),
+	}
+}
+
+/*
+ MD5 password crypt implementation
+*/
+func MD5Crypt(password, salt, magic []byte) []byte {
+	d := md5.New()
+
+	d.Write(password)
+	d.Write(magic)
+	d.Write(salt)
+
+	d2 := md5.New()
+	d2.Write(password)
+	d2.Write(salt)
+	d2.Write(password)
+
+	for i, mixin := 0, d2.Sum(nil); i < len(password); i++ {
+		d.Write([]byte{mixin[i%16]})
+	}
+
+	for i := len(password); i != 0; i >>= 1 {
+		if i&1 == 0 {
+			d.Write([]byte{password[0]})
+		} else {
+			d.Write([]byte{0})
+		}
+	}
+
+	final := d.Sum(nil)
+
+	for i := 0; i < 1000; i++ {
+		d2 := md5.New()
+		if i&1 == 0 {
+			d2.Write(final)
+		} else {
+			d2.Write(password)
+		}
+
+		if i%3 != 0 {
+			d2.Write(salt)
+		}
+
+		if i%7 != 0 {
+			d2.Write(password)
+		}
+
+		if i&1 == 0 {
+			d2.Write(password)
+		} else {
+			d2.Write(final)
+		}
+		final = d2.Sum(nil)
+	}
+
+	result := make([]byte, 0, 22)
+	v := uint(0)
+	bits := uint(0)
+	for _, i := range md5_crypt_swaps {
+		v |= (uint(final[i]) << bits)
+		for bits = bits + 8; bits > 6; bits -= 6 {
+			result = append(result, itoa64[v&0x3f])
+			v >>= 6
+		}
+	}
+	result = append(result, itoa64[v&0x3f])
+
+	return append(append(append(magic, salt...), '$'), result...)
+}
diff --git a/vendor/github.com/abbot/go-http-auth/misc.go b/vendor/github.com/abbot/go-http-auth/misc.go
new file mode 100644
index 0000000..4536ce6
--- /dev/null
+++ b/vendor/github.com/abbot/go-http-auth/misc.go
@@ -0,0 +1,141 @@
+package auth
+
+import (
+	"bytes"
+	"crypto/md5"
+	"crypto/rand"
+	"encoding/base64"
+	"fmt"
+	"net/http"
+	"strings"
+)
+
+// RandomKey returns a random 16-byte base64 alphabet string
+func RandomKey() string {
+	k := make([]byte, 12)
+	for bytes := 0; bytes < len(k); {
+		n, err := rand.Read(k[bytes:])
+		if err != nil {
+			panic("rand.Read() failed")
+		}
+		bytes += n
+	}
+	return base64.StdEncoding.EncodeToString(k)
+}
+
+// H function for MD5 algorithm (returns a lower-case hex MD5 digest)
+func H(data string) string {
+	digest := md5.New()
+	digest.Write([]byte(data))
+	return fmt.Sprintf("%x", digest.Sum(nil))
+}
+
+// ParseList parses a comma-separated list of values as described by
+// RFC 2068 and returns list elements.
+//
+// Lifted from https://code.google.com/p/gorilla/source/browse/http/parser/parser.go
+// which was ported from urllib2.parse_http_list, from the Python
+// standard library.
+func ParseList(value string) []string {
+	var list []string
+	var escape, quote bool
+	b := new(bytes.Buffer)
+	for _, r := range value {
+		switch {
+		case escape:
+			b.WriteRune(r)
+			escape = false
+		case quote:
+			if r == '\\' {
+				escape = true
+			} else {
+				if r == '"' {
+					quote = false
+				}
+				b.WriteRune(r)
+			}
+		case r == ',':
+			list = append(list, strings.TrimSpace(b.String()))
+			b.Reset()
+		case r == '"':
+			quote = true
+			b.WriteRune(r)
+		default:
+			b.WriteRune(r)
+		}
+	}
+	// Append last part.
+	if s := b.String(); s != "" {
+		list = append(list, strings.TrimSpace(s))
+	}
+	return list
+}
+
+// ParsePairs extracts key/value pairs from a comma-separated list of
+// values as described by RFC 2068 and returns a map[key]value. The
+// resulting values are unquoted. If a list element doesn't contain a
+// "=", the key is the element itself and the value is an empty
+// string.
+//
+// Lifted from https://code.google.com/p/gorilla/source/browse/http/parser/parser.go
+func ParsePairs(value string) map[string]string {
+	m := make(map[string]string)
+	for _, pair := range ParseList(strings.TrimSpace(value)) {
+		if i := strings.Index(pair, "="); i < 0 {
+			m[pair] = ""
+		} else {
+			v := pair[i+1:]
+			if v[0] == '"' && v[len(v)-1] == '"' {
+				// Unquote it.
+				v = v[1 : len(v)-1]
+			}
+			m[pair[:i]] = v
+		}
+	}
+	return m
+}
+
+// Headers contains header and error codes used by authenticator.
+type Headers struct {
+	Authenticate      string // WWW-Authenticate
+	Authorization     string // Authorization
+	AuthInfo          string // Authentication-Info
+	UnauthCode        int    // 401
+	UnauthContentType string // text/plain
+	UnauthResponse    string // Unauthorized.
+}
+
+// V returns NormalHeaders when h is nil, or h otherwise. Allows to
+// use uninitialized *Headers values in structs.
+func (h *Headers) V() *Headers {
+	if h == nil {
+		return NormalHeaders
+	}
+	return h
+}
+
+var (
+	// NormalHeaders are the regular Headers used by an HTTP Server for
+	// request authentication.
+	NormalHeaders = &Headers{
+		Authenticate:      "WWW-Authenticate",
+		Authorization:     "Authorization",
+		AuthInfo:          "Authentication-Info",
+		UnauthCode:        http.StatusUnauthorized,
+		UnauthContentType: "text/plain",
+		UnauthResponse:    fmt.Sprintf("%d %s\n", http.StatusUnauthorized, http.StatusText(http.StatusUnauthorized)),
+	}
+
+	// ProxyHeaders are Headers used by an HTTP Proxy server for proxy
+	// access authentication.
+	ProxyHeaders = &Headers{
+		Authenticate:      "Proxy-Authenticate",
+		Authorization:     "Proxy-Authorization",
+		AuthInfo:          "Proxy-Authentication-Info",
+		UnauthCode:        http.StatusProxyAuthRequired,
+		UnauthContentType: "text/plain",
+		UnauthResponse:    fmt.Sprintf("%d %s\n", http.StatusProxyAuthRequired, http.StatusText(http.StatusProxyAuthRequired)),
+	}
+)
+
+const contentType = "Content-Type"
diff --git a/vendor/github.com/abbot/go-http-auth/test.htdigest b/vendor/github.com/abbot/go-http-auth/test.htdigest
new file mode 100644
index 0000000..6c8c75b
--- /dev/null
+++ b/vendor/github.com/abbot/go-http-auth/test.htdigest
@@ -0,0 +1 @@
+test:example.com:aa78524fceb0e50fd8ca96dd818b8cf9
diff --git a/vendor/github.com/abbot/go-http-auth/test.htpasswd b/vendor/github.com/abbot/go-http-auth/test.htpasswd
new file mode 100644
index 0000000..4844a3c
--- /dev/null
+++ b/vendor/github.com/abbot/go-http-auth/test.htpasswd
@@ -0,0 +1,4 @@
+test:{SHA}qvTGHdzF6KLavt4PO0gs2a6pQ00=
+test2:$apr1$a0j62R97$mYqFkloXH0/UOaUnAiV2b0
+test16:$apr1$JI4wh3am$AmhephVqLTUyAVpFQeHZC0
+test3:$2y$05$ih3C91zUBSTFcAh2mQnZYuob0UOZVEf16wl/ukgjDhjvj.xgM1WwS
diff --git a/vendor/github.com/abbot/go-http-auth/users.go b/vendor/github.com/abbot/go-http-auth/users.go
new file mode 100644
index 0000000..3771812
--- /dev/null
+++ b/vendor/github.com/abbot/go-http-auth/users.go
@@ -0,0 +1,154 @@
+package auth
+
+import (
+	"encoding/csv"
+	"os"
+	"sync"
+)
+
+/*
+ SecretProvider is used by authenticators. Takes user name and realm
+ as an argument, returns secret required for authentication (HA1 for
+ digest authentication, properly encrypted password for basic).
+
+ Returning an empty string means failing the authentication.
+*/
+type SecretProvider func(user, realm string) string
+
+/*
+ Common functions for file auto-reloading
+*/
+type File struct {
+	Path string
+	Info os.FileInfo
+	/* must be set in inherited types during initialization */
+	Reload func()
+	mu     sync.Mutex
+}
+
+func (f *File) ReloadIfNeeded() {
+	info, err := os.Stat(f.Path)
+	if err != nil {
+		panic(err)
+	}
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	if f.Info == nil || f.Info.ModTime() != info.ModTime() {
+		f.Info = info
+		f.Reload()
+	}
+}
+
+/*
+ Structure used for htdigest file authentication. Users map realms to
+ maps of users to their HA1 digests.
+*/
+type HtdigestFile struct {
+	File
+	Users map[string]map[string]string
+	mu    sync.RWMutex
+}
+
+func reload_htdigest(hf *HtdigestFile) {
+	r, err := os.Open(hf.Path)
+	if err != nil {
+		panic(err)
+	}
+	csv_reader := csv.NewReader(r)
+	csv_reader.Comma = ':'
+	csv_reader.Comment = '#'
+	csv_reader.TrimLeadingSpace = true
+
+	records, err := csv_reader.ReadAll()
+	if err != nil {
+		panic(err)
+	}
+
+	hf.mu.Lock()
+	defer hf.mu.Unlock()
+	hf.Users = make(map[string]map[string]string)
+	for _, record := range records {
+		_, exists := hf.Users[record[1]]
+		if !exists {
+			hf.Users[record[1]] = make(map[string]string)
+		}
+		hf.Users[record[1]][record[0]] = record[2]
+	}
+}
+
+/*
+ SecretProvider implementation based on htdigest-formated files. Will
+ reload htdigest file on changes. Will panic on syntax errors in
+ htdigest files.
+*/
+func HtdigestFileProvider(filename string) SecretProvider {
+	hf := &HtdigestFile{File: File{Path: filename}}
+	hf.Reload = func() { reload_htdigest(hf) }
+	return func(user, realm string) string {
+		hf.ReloadIfNeeded()
+		hf.mu.RLock()
+		defer hf.mu.RUnlock()
+		_, exists := hf.Users[realm]
+		if !exists {
+			return ""
+		}
+		digest, exists := hf.Users[realm][user]
+		if !exists {
+			return ""
+		}
+		return digest
+	}
+}
+
+/*
+ Structure used for htdigest file authentication. Users map users to
+ their salted encrypted password
+*/
+type HtpasswdFile struct {
+	File
+	Users map[string]string
+	mu    sync.RWMutex
+}
+
+func reload_htpasswd(h *HtpasswdFile) {
+	r, err := os.Open(h.Path)
+	if err != nil {
+		panic(err)
+	}
+	csv_reader := csv.NewReader(r)
+	csv_reader.Comma = ':'
+	csv_reader.Comment = '#'
+	csv_reader.TrimLeadingSpace = true
+
+	records, err := csv_reader.ReadAll()
+	if err != nil {
+		panic(err)
+	}
+
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	h.Users = make(map[string]string)
+	for _, record := range records {
+		h.Users[record[0]] = record[1]
+	}
+}
+
+/*
+ SecretProvider implementation based on htpasswd-formated files. Will
+ reload htpasswd file on changes. Will panic on syntax errors in
+ htpasswd files. Realm argument of the SecretProvider is ignored.
+*/
+func HtpasswdFileProvider(filename string) SecretProvider {
+	h := &HtpasswdFile{File: File{Path: filename}}
+	h.Reload = func() { reload_htpasswd(h) }
+	return func(user, realm string) string {
+		h.ReloadIfNeeded()
+		h.mu.RLock()
+		password, exists := h.Users[user]
+		h.mu.RUnlock()
+		if !exists {
+			return ""
+		}
+		return password
+	}
+}
diff --git a/vendor/golang.org/x/crypto/AUTHORS b/vendor/golang.org/x/crypto/AUTHORS
new file mode 100644
index 0000000..2b00ddb
--- /dev/null
+++ b/vendor/golang.org/x/crypto/AUTHORS
@@ -0,0 +1,3 @@
+# This source code refers to The Go Authors for copyright purposes.
+# The master list of authors is in the main Go distribution,
+# visible at https://tip.golang.org/AUTHORS.
diff --git a/vendor/golang.org/x/crypto/CONTRIBUTORS b/vendor/golang.org/x/crypto/CONTRIBUTORS
new file mode 100644
index 0000000..1fbd3e9
--- /dev/null
+++ b/vendor/golang.org/x/crypto/CONTRIBUTORS
@@ -0,0 +1,3 @@
+# This source code was written by the Go contributors.
+# The master list of contributors is in the main Go distribution,
+# visible at https://tip.golang.org/CONTRIBUTORS.
diff --git a/vendor/golang.org/x/crypto/LICENSE b/vendor/golang.org/x/crypto/LICENSE
new file mode 100644
index 0000000..6a66aea
--- /dev/null
+++ b/vendor/golang.org/x/crypto/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/golang.org/x/crypto/PATENTS b/vendor/golang.org/x/crypto/PATENTS
new file mode 100644
index 0000000..7330990
--- /dev/null
+++ b/vendor/golang.org/x/crypto/PATENTS
@@ -0,0 +1,22 @@
+Additional IP Rights Grant (Patents)
+
+"This implementation" means the copyrightable works distributed by
+Google as part of the Go project.
+
+Google hereby grants to You a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable (except as stated in this section)
+patent license to make, have made, use, offer to sell, sell, import,
+transfer and otherwise run, modify and propagate the contents of this
+implementation of Go, where such license applies only to those patent
+claims, both currently owned or controlled by Google and acquired in
+the future, licensable by Google that are necessarily infringed by this
+implementation of Go.  This grant does not include claims that would be
+infringed only as a consequence of further modification of this
+implementation.  If you or your agent or exclusive licensee institute or
+order or agree to the institution of patent litigation against any
+entity (including a cross-claim or counterclaim in a lawsuit) alleging
+that this implementation of Go or any code incorporated within this
+implementation of Go constitutes direct or contributory patent
+infringement, or inducement of patent infringement, then any patent
+rights granted to you under this License for this implementation of Go
+shall terminate as of the date such litigation is filed.
diff --git a/vendor/golang.org/x/crypto/bcrypt/base64.go b/vendor/golang.org/x/crypto/bcrypt/base64.go
new file mode 100644
index 0000000..fc31160
--- /dev/null
+++ b/vendor/golang.org/x/crypto/bcrypt/base64.go
@@ -0,0 +1,35 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package bcrypt
+
+import "encoding/base64"
+
+const alphabet = "./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
+
+var bcEncoding = base64.NewEncoding(alphabet)
+
+func base64Encode(src []byte) []byte {
+	n := bcEncoding.EncodedLen(len(src))
+	dst := make([]byte, n)
+	bcEncoding.Encode(dst, src)
+	for dst[n-1] == '=' {
+		n--
+	}
+	return dst[:n]
+}
+
+func base64Decode(src []byte) ([]byte, error) {
+	numOfEquals := 4 - (len(src) % 4)
+	for i := 0; i < numOfEquals; i++ {
+		src = append(src, '=')
+	}
+
+	dst := make([]byte, bcEncoding.DecodedLen(len(src)))
+	n, err := bcEncoding.Decode(dst, src)
+	if err != nil {
+		return nil, err
+	}
+	return dst[:n], nil
+}
diff --git a/vendor/golang.org/x/crypto/bcrypt/bcrypt.go b/vendor/golang.org/x/crypto/bcrypt/bcrypt.go
new file mode 100644
index 0000000..aeb73f8
--- /dev/null
+++ b/vendor/golang.org/x/crypto/bcrypt/bcrypt.go
@@ -0,0 +1,295 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package bcrypt implements Provos and Mazières's bcrypt adaptive hashing
+// algorithm. See http://www.usenix.org/event/usenix99/provos/provos.pdf
+package bcrypt // import "golang.org/x/crypto/bcrypt"
+
+// The code is a port of Provos and Mazières's C implementation.
+import (
+	"crypto/rand"
+	"crypto/subtle"
+	"errors"
+	"fmt"
+	"io"
+	"strconv"
+
+	"golang.org/x/crypto/blowfish"
+)
+
+const (
+	MinCost     int = 4  // the minimum allowable cost as passed in to GenerateFromPassword
+	MaxCost     int = 31 // the maximum allowable cost as passed in to GenerateFromPassword
+	DefaultCost int = 10 // the cost that will actually be set if a cost below MinCost is passed into GenerateFromPassword
+)
+
+// The error returned from CompareHashAndPassword when a password and hash do
+// not match.
+var ErrMismatchedHashAndPassword = errors.New("crypto/bcrypt: hashedPassword is not the hash of the given password")
+
+// The error returned from CompareHashAndPassword when a hash is too short to
+// be a bcrypt hash.
+var ErrHashTooShort = errors.New("crypto/bcrypt: hashedSecret too short to be a bcrypted password")
+
+// The error returned from CompareHashAndPassword when a hash was created with
+// a bcrypt algorithm newer than this implementation.
+type HashVersionTooNewError byte
+
+func (hv HashVersionTooNewError) Error() string {
+	return fmt.Sprintf("crypto/bcrypt: bcrypt algorithm version '%c' requested is newer than current version '%c'", byte(hv), majorVersion)
+}
+
+// The error returned from CompareHashAndPassword when a hash starts with something other than '$'
+type InvalidHashPrefixError byte
+
+func (ih InvalidHashPrefixError) Error() string {
+	return fmt.Sprintf("crypto/bcrypt: bcrypt hashes must start with '$', but hashedSecret started with '%c'", byte(ih))
+}
+
+type InvalidCostError int
+
+func (ic InvalidCostError) Error() string {
+	return fmt.Sprintf("crypto/bcrypt: cost %d is outside allowed range (%d,%d)", int(ic), int(MinCost), int(MaxCost))
+}
+
+const (
+	majorVersion       = '2'
+	minorVersion       = 'a'
+	maxSaltSize        = 16
+	maxCryptedHashSize = 23
+	encodedSaltSize    = 22
+	encodedHashSize    = 31
+	minHashSize        = 59
+)
+
+// magicCipherData is an IV for the 64 Blowfish encryption calls in
+// bcrypt(). It's the string "OrpheanBeholderScryDoubt" in big-endian bytes.
+var magicCipherData = []byte{
+	0x4f, 0x72, 0x70, 0x68,
+	0x65, 0x61, 0x6e, 0x42,
+	0x65, 0x68, 0x6f, 0x6c,
+	0x64, 0x65, 0x72, 0x53,
+	0x63, 0x72, 0x79, 0x44,
+	0x6f, 0x75, 0x62, 0x74,
+}
+
+type hashed struct {
+	hash  []byte
+	salt  []byte
+	cost  int // allowed range is MinCost to MaxCost
+	major byte
+	minor byte
+}
+
+// GenerateFromPassword returns the bcrypt hash of the password at the given
+// cost. If the cost given is less than MinCost, the cost will be set to
+// DefaultCost, instead. Use CompareHashAndPassword, as defined in this package,
+// to compare the returned hashed password with its cleartext version.
+func GenerateFromPassword(password []byte, cost int) ([]byte, error) {
+	p, err := newFromPassword(password, cost)
+	if err != nil {
+		return nil, err
+	}
+	return p.Hash(), nil
+}
+
+// CompareHashAndPassword compares a bcrypt hashed password with its possible
+// plaintext equivalent. Returns nil on success, or an error on failure.
+func CompareHashAndPassword(hashedPassword, password []byte) error {
+	p, err := newFromHash(hashedPassword)
+	if err != nil {
+		return err
+	}
+
+	otherHash, err := bcrypt(password, p.cost, p.salt)
+	if err != nil {
+		return err
+	}
+
+	otherP := &hashed{otherHash, p.salt, p.cost, p.major, p.minor}
+	if subtle.ConstantTimeCompare(p.Hash(), otherP.Hash()) == 1 {
+		return nil
+	}
+
+	return ErrMismatchedHashAndPassword
+}
+
+// Cost returns the hashing cost used to create the given hashed
+// password. When, in the future, the hashing cost of a password system needs
+// to be increased in order to adjust for greater computational power, this
+// function allows one to establish which passwords need to be updated.
+func Cost(hashedPassword []byte) (int, error) {
+	p, err := newFromHash(hashedPassword)
+	if err != nil {
+		return 0, err
+	}
+	return p.cost, nil
+}
+
+func newFromPassword(password []byte, cost int) (*hashed, error) {
+	if cost < MinCost {
+		cost = DefaultCost
+	}
+	p := new(hashed)
+	p.major = majorVersion
+	p.minor = minorVersion
+
+	err := checkCost(cost)
+	if err != nil {
+		return nil, err
+	}
+	p.cost = cost
+
+	unencodedSalt := make([]byte, maxSaltSize)
+	_, err = io.ReadFull(rand.Reader, unencodedSalt)
+	if err != nil {
+		return nil, err
+	}
+
+	p.salt = base64Encode(unencodedSalt)
+	hash, err := bcrypt(password, p.cost, p.salt)
+	if err != nil {
+		return nil, err
+	}
+	p.hash = hash
+	return p, err
+}
+
+func newFromHash(hashedSecret []byte) (*hashed, error) {
+	if len(hashedSecret) < minHashSize {
+		return nil, ErrHashTooShort
+	}
+	p := new(hashed)
+	n, err := p.decodeVersion(hashedSecret)
+	if err != nil {
+		return nil, err
+	}
+	hashedSecret = hashedSecret[n:]
+	n, err = p.decodeCost(hashedSecret)
+	if err != nil {
+		return nil, err
+	}
+	hashedSecret = hashedSecret[n:]
+
+	// The "+2" is here because we'll have to append at most 2 '=' to the salt
+	// when base64 decoding it in expensiveBlowfishSetup().
+	p.salt = make([]byte, encodedSaltSize, encodedSaltSize+2)
+	copy(p.salt, hashedSecret[:encodedSaltSize])
+
+	hashedSecret = hashedSecret[encodedSaltSize:]
+	p.hash = make([]byte, len(hashedSecret))
+	copy(p.hash, hashedSecret)
+
+	return p, nil
+}
+
+func bcrypt(password []byte, cost int, salt []byte) ([]byte, error) {
+	cipherData := make([]byte, len(magicCipherData))
+	copy(cipherData, magicCipherData)
+
+	c, err := expensiveBlowfishSetup(password, uint32(cost), salt)
+	if err != nil {
+		return nil, err
+	}
+
+	for i := 0; i < 24; i += 8 {
+		for j := 0; j < 64; j++ {
+			c.Encrypt(cipherData[i:i+8], cipherData[i:i+8])
+		}
+	}
+
+	// Bug compatibility with C bcrypt implementations. We only encode 23 of
+	// the 24 bytes encrypted.
+	hsh := base64Encode(cipherData[:maxCryptedHashSize])
+	return hsh, nil
+}
+
+func expensiveBlowfishSetup(key []byte, cost uint32, salt []byte) (*blowfish.Cipher, error) {
+	csalt, err := base64Decode(salt)
+	if err != nil {
+		return nil, err
+	}
+
+	// Bug compatibility with C bcrypt implementations. They use the trailing
+	// NULL in the key string during expansion.
+	// We copy the key to prevent changing the underlying array.
+	ckey := append(key[:len(key):len(key)], 0)
+
+	c, err := blowfish.NewSaltedCipher(ckey, csalt)
+	if err != nil {
+		return nil, err
+	}
+
+	var i, rounds uint64
+	rounds = 1 << cost
+	for i = 0; i < rounds; i++ {
+		blowfish.ExpandKey(ckey, c)
+		blowfish.ExpandKey(csalt, c)
+	}
+
+	return c, nil
+}
+
+func (p *hashed) Hash() []byte {
+	arr := make([]byte, 60)
+	arr[0] = '$'
+	arr[1] = p.major
+	n := 2
+	if p.minor != 0 {
+		arr[2] = p.minor
+		n = 3
+	}
+	arr[n] = '$'
+	n++
+	copy(arr[n:], []byte(fmt.Sprintf("%02d", p.cost)))
+	n += 2
+	arr[n] = '$'
+	n++
+	copy(arr[n:], p.salt)
+	n += encodedSaltSize
+	copy(arr[n:], p.hash)
+	n += encodedHashSize
+	return arr[:n]
+}
+
+func (p *hashed) decodeVersion(sbytes []byte) (int, error) {
+	if sbytes[0] != '$' {
+		return -1, InvalidHashPrefixError(sbytes[0])
+	}
+	if sbytes[1] > majorVersion {
+		return -1, HashVersionTooNewError(sbytes[1])
+	}
+	p.major = sbytes[1]
+	n := 3
+	if sbytes[2] != '$' {
+		p.minor = sbytes[2]
+		n++
+	}
+	return n, nil
+}
+
+// sbytes should begin where decodeVersion left off.
+func (p *hashed) decodeCost(sbytes []byte) (int, error) {
+	cost, err := strconv.Atoi(string(sbytes[0:2]))
+	if err != nil {
+		return -1, err
+	}
+	err = checkCost(cost)
+	if err != nil {
+		return -1, err
+	}
+	p.cost = cost
+	return 3, nil
+}
+
+func (p *hashed) String() string {
+	return fmt.Sprintf("&{hash: %#v, salt: %#v, cost: %d, major: %c, minor: %c}", string(p.hash), p.salt, p.cost, p.major, p.minor)
+}
+
+func checkCost(cost int) error {
+	if cost < MinCost || cost > MaxCost {
+		return InvalidCostError(cost)
+	}
+	return nil
+}
diff --git a/vendor/golang.org/x/crypto/blowfish/block.go b/vendor/golang.org/x/crypto/blowfish/block.go
new file mode 100644
index 0000000..9d80f19
--- /dev/null
+++ b/vendor/golang.org/x/crypto/blowfish/block.go
@@ -0,0 +1,159 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package blowfish
+
+// getNextWord returns the next big-endian uint32 value from the byte slice
+// at the given position in a circular manner, updating the position.
+func getNextWord(b []byte, pos *int) uint32 {
+	var w uint32
+	j := *pos
+	for i := 0; i < 4; i++ {
+		w = w<<8 | uint32(b[j])
+		j++
+		if j >= len(b) {
+			j = 0
+		}
+	}
+	*pos = j
+	return w
+}
+
+// ExpandKey performs a key expansion on the given *Cipher. Specifically, it
+// performs the Blowfish algorithm's key schedule which sets up the *Cipher's
+// pi and substitution tables for calls to Encrypt. This is used, primarily,
+// by the bcrypt package to reuse the Blowfish key schedule during its
+// set up. It's unlikely that you need to use this directly.
+func ExpandKey(key []byte, c *Cipher) {
+	j := 0
+	for i := 0; i < 18; i++ {
+		// Using inlined getNextWord for performance.
+		var d uint32
+		for k := 0; k < 4; k++ {
+			d = d<<8 | uint32(key[j])
+			j++
+			if j >= len(key) {
+				j = 0
+			}
+		}
+		c.p[i] ^= d
+	}
+
+	var l, r uint32
+	for i := 0; i < 18; i += 2 {
+		l, r = encryptBlock(l, r, c)
+		c.p[i], c.p[i+1] = l, r
+	}
+
+	for i := 0; i < 256; i += 2 {
+		l, r = encryptBlock(l, r, c)
+		c.s0[i], c.s0[i+1] = l, r
+	}
+	for i := 0; i < 256; i += 2 {
+		l, r = encryptBlock(l, r, c)
+		c.s1[i], c.s1[i+1] = l, r
+	}
+	for i := 0; i < 256; i += 2 {
+		l, r = encryptBlock(l, r, c)
+		c.s2[i], c.s2[i+1] = l, r
+	}
+	for i := 0; i < 256; i += 2 {
+		l, r = encryptBlock(l, r, c)
+		c.s3[i], c.s3[i+1] = l, r
+	}
+}
+
+// This is similar to ExpandKey, but folds the salt during the key
+// schedule. While ExpandKey is essentially expandKeyWithSalt with an all-zero
+// salt passed in, reusing ExpandKey turns out to be a place of inefficiency
+// and specializing it here is useful.
+func expandKeyWithSalt(key []byte, salt []byte, c *Cipher) {
+	j := 0
+	for i := 0; i < 18; i++ {
+		c.p[i] ^= getNextWord(key, &j)
+	}
+
+	j = 0
+	var l, r uint32
+	for i := 0; i < 18; i += 2 {
+		l ^= getNextWord(salt, &j)
+		r ^= getNextWord(salt, &j)
+		l, r = encryptBlock(l, r, c)
+		c.p[i], c.p[i+1] = l, r
+	}
+
+	for i := 0; i < 256; i += 2 {
+		l ^= getNextWord(salt, &j)
+		r ^= getNextWord(salt, &j)
+		l, r = encryptBlock(l, r, c)
+		c.s0[i], c.s0[i+1] = l, r
+	}
+
+	for i := 0; i < 256; i += 2 {
+		l ^= getNextWord(salt, &j)
+		r ^= getNextWord(salt, &j)
+		l, r = encryptBlock(l, r, c)
+		c.s1[i], c.s1[i+1] = l, r
+	}
+
+	for i := 0; i < 256; i += 2 {
+		l ^= getNextWord(salt, &j)
+		r ^= getNextWord(salt, &j)
+		l, r = encryptBlock(l, r, c)
+		c.s2[i], c.s2[i+1] = l, r
+	}
+
+	for i := 0; i < 256; i += 2 {
+		l ^= getNextWord(salt, &j)
+		r ^= getNextWord(salt, &j)
+		l, r = encryptBlock(l, r, c)
+		c.s3[i], c.s3[i+1] = l, r
+	}
+}
+
+func encryptBlock(l, r uint32, c *Cipher) (uint32, uint32) {
+	xl, xr := l, r
+	xl ^= c.p[0]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[1]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[2]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[3]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[4]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[5]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[6]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[7]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[8]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[9]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[10]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[11]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[12]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[13]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[14]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[15]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[16]
+	xr ^= c.p[17]
+	return xr, xl
+}
+
+func decryptBlock(l, r uint32, c *Cipher) (uint32, uint32) {
+	xl, xr := l, r
+	xl ^= c.p[17]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[16]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[15]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[14]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[13]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[12]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[11]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[10]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[9]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[8]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[7]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[6]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[5]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[4]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[3]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[2]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[1]
+	xr ^= c.p[0]
+	return xr, xl
+}
diff --git a/vendor/golang.org/x/crypto/blowfish/cipher.go b/vendor/golang.org/x/crypto/blowfish/cipher.go
new file mode 100644
index 0000000..213bf20
--- /dev/null
+++ b/vendor/golang.org/x/crypto/blowfish/cipher.go
@@ -0,0 +1,99 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package blowfish implements Bruce Schneier's Blowfish encryption algorithm.
+//
+// Blowfish is a legacy cipher and its short block size makes it vulnerable to
+// birthday bound attacks (see https://sweet32.info). It should only be used
+// where compatibility with legacy systems, not security, is the goal.
+//
+// Deprecated: any new system should use AES (from crypto/aes, if necessary in
+// an AEAD mode like crypto/cipher.NewGCM) or XChaCha20-Poly1305 (from
+// golang.org/x/crypto/chacha20poly1305).
+package blowfish // import "golang.org/x/crypto/blowfish"
+
+// The code is a port of Bruce Schneier's C implementation.
+// See https://www.schneier.com/blowfish.html.
+
+import "strconv"
+
+// The Blowfish block size in bytes.
+const BlockSize = 8
+
+// A Cipher is an instance of Blowfish encryption using a particular key.
+type Cipher struct {
+	p              [18]uint32
+	s0, s1, s2, s3 [256]uint32
+}
+
+type KeySizeError int
+
+func (k KeySizeError) Error() string {
+	return "crypto/blowfish: invalid key size " + strconv.Itoa(int(k))
+}
+
+// NewCipher creates and returns a Cipher.
+// The key argument should be the Blowfish key, from 1 to 56 bytes.
+func NewCipher(key []byte) (*Cipher, error) {
+	var result Cipher
+	if k := len(key); k < 1 || k > 56 {
+		return nil, KeySizeError(k)
+	}
+	initCipher(&result)
+	ExpandKey(key, &result)
+	return &result, nil
+}
+
+// NewSaltedCipher creates a returns a Cipher that folds a salt into its key
+// schedule. For most purposes, NewCipher, instead of NewSaltedCipher, is
+// sufficient and desirable. For bcrypt compatibility, the key can be over 56
+// bytes.
+func NewSaltedCipher(key, salt []byte) (*Cipher, error) {
+	if len(salt) == 0 {
+		return NewCipher(key)
+	}
+	var result Cipher
+	if k := len(key); k < 1 {
+		return nil, KeySizeError(k)
+	}
+	initCipher(&result)
+	expandKeyWithSalt(key, salt, &result)
+	return &result, nil
+}
+
+// BlockSize returns the Blowfish block size, 8 bytes.
+// It is necessary to satisfy the Block interface in the
+// package "crypto/cipher".
+func (c *Cipher) BlockSize() int { return BlockSize }
+
+// Encrypt encrypts the 8-byte buffer src using the key k
+// and stores the result in dst.
+// Note that for amounts of data larger than a block,
+// it is not safe to just call Encrypt on successive blocks;
+// instead, use an encryption mode like CBC (see crypto/cipher/cbc.go).
+func (c *Cipher) Encrypt(dst, src []byte) {
+	l := uint32(src[0])<<24 | uint32(src[1])<<16 | uint32(src[2])<<8 | uint32(src[3])
+	r := uint32(src[4])<<24 | uint32(src[5])<<16 | uint32(src[6])<<8 | uint32(src[7])
+	l, r = encryptBlock(l, r, c)
+	dst[0], dst[1], dst[2], dst[3] = byte(l>>24), byte(l>>16), byte(l>>8), byte(l)
+	dst[4], dst[5], dst[6], dst[7] = byte(r>>24), byte(r>>16), byte(r>>8), byte(r)
+}
+
+// Decrypt decrypts the 8-byte buffer src using the key k
+// and stores the result in dst.
+func (c *Cipher) Decrypt(dst, src []byte) {
+	l := uint32(src[0])<<24 | uint32(src[1])<<16 | uint32(src[2])<<8 | uint32(src[3])
+	r := uint32(src[4])<<24 | uint32(src[5])<<16 | uint32(src[6])<<8 | uint32(src[7])
+	l, r = decryptBlock(l, r, c)
+	dst[0], dst[1], dst[2], dst[3] = byte(l>>24), byte(l>>16), byte(l>>8), byte(l)
+	dst[4], dst[5], dst[6], dst[7] = byte(r>>24), byte(r>>16), byte(r>>8), byte(r)
+}
+
+func initCipher(c *Cipher) {
+	copy(c.p[0:], p[0:])
+	copy(c.s0[0:], s0[0:])
+	copy(c.s1[0:], s1[0:])
+	copy(c.s2[0:], s2[0:])
+	copy(c.s3[0:], s3[0:])
+}
diff --git a/vendor/golang.org/x/crypto/blowfish/const.go b/vendor/golang.org/x/crypto/blowfish/const.go
new file mode 100644
index 0000000..d040775
--- /dev/null
+++ b/vendor/golang.org/x/crypto/blowfish/const.go
@@ -0,0 +1,199 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// The startup permutation array and substitution boxes.
+// They are the hexadecimal digits of PI; see:
+// https://www.schneier.com/code/constants.txt.
+
+package blowfish
+
+var s0 = [256]uint32{
+	0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96,
+	0xba7c9045, 0xf12c7f99, 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
+	0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e, 0x0d95748f, 0x728eb658,
+	0x718bcd58, 0x82154aee, 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
+	0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, 0x8e79dcb0, 0x603a180e,
+	0x6c9e0e8b, 0xb01e8a3e, 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
+	0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440, 0x55ca396a, 0x2aab10b6,
+	0xb4cc5c34, 0x1141e8ce, 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
+	0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e, 0xafd6ba33, 0x6c24cf5c,
+	0x7a325381, 0x28958677, 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
+	0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032, 0xef845d5d, 0xe98575b1,
+	0xdc262302, 0xeb651b88, 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
+	0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, 0x21c66842, 0xf6e96c9a,
+	0x670c9c61, 0xabd388f0, 0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
+	0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98, 0xa1f1651d, 0x39af0176,
+	0x66ca593e, 0x82430e88, 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
+	0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6, 0x4ed3aa62, 0x363f7706,
+	0x1bfedf72, 0x429b023d, 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
+	0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7, 0xe3fe501a, 0xb6794c3b,
+	0x976ce0bd, 0x04c006ba, 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
+	0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 0x6dfc511f, 0x9b30952c,
+	0xcc814544, 0xaf5ebd09, 0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
+	0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb, 0x5579c0bd, 0x1a60320a,
+	0xd6a100c6, 0x402c7279, 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
+	0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, 0x323db5fa, 0xfd238760,
+	0x53317b48, 0x3e00df82, 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
+	0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573, 0x695b27b0, 0xbbca58c8,
+	0xe1ffa35d, 0xb8f011a0, 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
+	0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790, 0xe1ddf2da, 0xa4cb7e33,
+	0x62fb1341, 0xcee4c6e8, 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
+	0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0, 0xd08ed1d0, 0xafc725e0,
+	0x8e3c5b2f, 0x8e7594b7, 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
+	0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, 0x2f2f2218, 0xbe0e1777,
+	0xea752dfe, 0x8b021fa1, 0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
+	0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9, 0x165fa266, 0x80957705,
+	0x93cc7314, 0x211a1477, 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
+	0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49, 0x00250e2d, 0x2071b35e,
+	0x226800bb, 0x57b8e0af, 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
+	0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5, 0x83260376, 0x6295cfa9,
+	0x11c81968, 0x4e734a41, 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
+	0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, 0x08ba6fb5, 0x571be91f,
+	0xf296ec6b, 0x2a0dd915, 0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
+	0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a,
+}
+
+var s1 = [256]uint32{
+	0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 0xad6ea6b0, 0x49a7df7d,
+	0x9cee60b8, 0x8fedb266, 0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
+	0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e, 0x3f54989a, 0x5b429d65,
+	0x6b8fe4d6, 0x99f73fd6, 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
+	0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, 0x09686b3f, 0x3ebaefc9,
+	0x3c971814, 0x6b6a70a1, 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
+	0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8, 0xb03ada37, 0xf0500c0d,
+	0xf01c1f04, 0x0200b3ff, 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
+	0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701, 0x3ae5e581, 0x37c2dadc,
+	0xc8b57634, 0x9af3dda7, 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
+	0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331, 0x4e548b38, 0x4f6db908,
+	0x6f420d03, 0xf60a04bf, 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
+	0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 0x5512721f, 0x2e6b7124,
+	0x501adde6, 0x9f84cd87, 0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
+	0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2, 0xef1c1847, 0x3215d908,
+	0xdd433b37, 0x24c2ba16, 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
+	0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, 0x043556f1, 0xd7a3c76b,
+	0x3c11183b, 0x5924a509, 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
+	0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3, 0x771fe71c, 0x4e3d06fa,
+	0x2965dcb9, 0x99e71d0f, 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
+	0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 0xf2f74ea7, 0x361d2b3d,
+	0x1939260f, 0x19c27960, 0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
+	0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28, 0xc332ddef, 0xbe6c5aa5,
+	0x65582185, 0x68ab9802, 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
+	0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 0x13cca830, 0xeb61bd96,
+	0x0334fe1e, 0xaa0363cf, 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
+	0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e, 0x648b1eaf, 0x19bdf0ca,
+	0xa02369b9, 0x655abb50, 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
+	0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8, 0xf837889a, 0x97e32d77,
+	0x11ed935f, 0x16681281, 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
+	0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696, 0xcdb30aeb, 0x532e3054,
+	0x8fd948e4, 0x6dbc3128, 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
+	0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 0x45eee2b6, 0xa3aaabea,
+	0xdb6c4f15, 0xfacb4fd0, 0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
+	0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250, 0xcf62a1f2, 0x5b8d2646,
+	0xfc8883a0, 0xc1c7b6a3, 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
+	0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, 0x58428d2a, 0x0c55f5ea,
+	0x1dadf43e, 0x233f7061, 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
+	0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e, 0xa6078084, 0x19f8509e,
+	0xe8efd855, 0x61d99735, 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
+	0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, 0xdb73dbd3, 0x105588cd,
+	0x675fda79, 0xe3674340, 0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
+	0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7,
+}
+
+var s2 = [256]uint32{
+	0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 0x411520f7, 0x7602d4f7,
+	0xbcf46b2e, 0xd4a20068, 0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
+	0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840, 0x4d95fc1d, 0x96b591af,
+	0x70f4ddd3, 0x66a02f45, 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
+	0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, 0x28507825, 0x530429f4,
+	0x0a2c86da, 0xe9b66dfb, 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
+	0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6, 0xaace1e7c, 0xd3375fec,
+	0xce78a399, 0x406b2a42, 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
+	0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2, 0x3a6efa74, 0xdd5b4332,
+	0x6841e7f7, 0xca7820fb, 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
+	0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b, 0x55a867bc, 0xa1159a58,
+	0xcca92963, 0x99e1db33, 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
+	0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3, 0x95c11548, 0xe4c66d22,
+	0x48c1133f, 0xc70f86dc, 0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
+	0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564, 0x257b7834, 0x602a9c60,
+	0xdff8e8a3, 0x1f636c1b, 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
+	0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922, 0x85b2a20e, 0xe6ba0d99,
+	0xde720c8c, 0x2da2f728, 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
+	0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e, 0x0a476341, 0x992eff74,
+	0x3a6f6eab, 0xf4f8fd37, 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
+	0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, 0xf1290dc7, 0xcc00ffa3,
+	0xb5390f92, 0x690fed0b, 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
+	0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb, 0x37392eb3, 0xcc115979,
+	0x8026e297, 0xf42e312d, 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
+	0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350, 0x1a6b1018, 0x11caedfa,
+	0x3d25bdd8, 0xe2e1c3c9, 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
+	0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe, 0x9dbc8057, 0xf0f7c086,
+	0x60787bf8, 0x6003604d, 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
+	0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f, 0x77a057be, 0xbde8ae24,
+	0x55464299, 0xbf582e61, 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
+	0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9, 0x7aeb2661, 0x8b1ddf84,
+	0x846a0e79, 0x915f95e2, 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
+	0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, 0xb77f19b6, 0xe0a9dc09,
+	0x662d09a1, 0xc4324633, 0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
+	0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169, 0xdcb7da83, 0x573906fe,
+	0xa1e2ce9b, 0x4fcd7f52, 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
+	0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5, 0xf0177a28, 0xc0f586e0,
+	0x006058aa, 0x30dc7d62, 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
+	0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76, 0x6f05e409, 0x4b7c0188,
+	0x39720a3d, 0x7c927c24, 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
+	0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, 0x1e50ef5e, 0xb161e6f8,
+	0xa28514d9, 0x6c51133c, 0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
+	0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0,
+}
+
+var s3 = [256]uint32{
+	0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 0x5cb0679e, 0x4fa33742,
+	0xd3822740, 0x99bc9bbe, 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
+	0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4, 0x5748ab2f, 0xbc946e79,
+	0xc6a376d2, 0x6549c2c8, 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
+	0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 0xa1fad5f0, 0x6a2d519a,
+	0x63ef8ce2, 0x9a86ee22, 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
+	0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6, 0x2826a2f9, 0xa73a3ae1,
+	0x4ba99586, 0xef5562e9, 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
+	0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593, 0xe990fd5a, 0x9e34d797,
+	0x2cf0b7d9, 0x022b8b51, 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
+	0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c, 0xe029ac71, 0xe019a5e6,
+	0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
+	0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 0x15056dd4, 0x88f46dba,
+	0x03a16125, 0x0564f0bd, 0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
+	0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319, 0x7533d928, 0xb155fdf5,
+	0x03563482, 0x8aba3cbb, 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
+	0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, 0xea7a90c2, 0xfb3e7bce,
+	0x5121ce64, 0x774fbe32, 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
+	0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166, 0xb39a460a, 0x6445c0dd,
+	0x586cdecf, 0x1c20c8ae, 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
+	0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 0x72eacea8, 0xfa6484bb,
+	0x8d6612ae, 0xbf3c6f47, 0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
+	0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d, 0x4040cb08, 0x4eb4e2cc,
+	0x34d2466a, 0x0115af84, 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
+	0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, 0x611560b1, 0xe7933fdc,
+	0xbb3a792b, 0x344525bd, 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
+	0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7, 0x1a908749, 0xd44fbd9a,
+	0xd0dadecb, 0xd50ada38, 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
+	0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c, 0xbf97222c, 0x15e6fc2a,
+	0x0f91fc71, 0x9b941525, 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
+	0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442, 0xe0ec6e0e, 0x1698db3b,
+	0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
+	0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 0xdf359f8d, 0x9b992f2e,
+	0xe60b6f47, 0x0fe3f11d, 0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
+	0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299, 0xf523f357, 0xa6327623,
+	0x93a83531, 0x56cccd02, 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
+	0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, 0xe6c6c7bd, 0x327a140a,
+	0x45e1d006, 0xc3f27b9a, 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
+	0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b, 0x53113ec0, 0x1640e3d3,
+	0x38abbd60, 0x2547adf0, 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
+	0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 0x1948c25c, 0x02fb8a8c,
+	0x01c36ae4, 0xd6ebe1f9, 0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
+	0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6,
+}
+
+var p = [18]uint32{
+	0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 0xa4093822, 0x299f31d0,
+	0x082efa98, 0xec4e6c89, 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
+	0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, 0x9216d5d9, 0x8979fb1b,
+}
diff --git a/vendor/golang.org/x/net/AUTHORS b/vendor/golang.org/x/net/AUTHORS
new file mode 100644
index 0000000..15167cd
--- /dev/null
+++ b/vendor/golang.org/x/net/AUTHORS
@@ -0,0 +1,3 @@
+# This source code refers to The Go Authors for copyright purposes.
+# The master list of authors is in the main Go distribution,
+# visible at http://tip.golang.org/AUTHORS.
diff --git a/vendor/golang.org/x/net/CONTRIBUTORS b/vendor/golang.org/x/net/CONTRIBUTORS
new file mode 100644
index 0000000..1c4577e
--- /dev/null
+++ b/vendor/golang.org/x/net/CONTRIBUTORS
@@ -0,0 +1,3 @@
+# This source code was written by the Go contributors.
+# The master list of contributors is in the main Go distribution,
+# visible at http://tip.golang.org/CONTRIBUTORS.
diff --git a/vendor/golang.org/x/net/LICENSE b/vendor/golang.org/x/net/LICENSE
new file mode 100644
index 0000000..6a66aea
--- /dev/null
+++ b/vendor/golang.org/x/net/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/golang.org/x/net/PATENTS b/vendor/golang.org/x/net/PATENTS
new file mode 100644
index 0000000..7330990
--- /dev/null
+++ b/vendor/golang.org/x/net/PATENTS
@@ -0,0 +1,22 @@
+Additional IP Rights Grant (Patents)
+
+"This implementation" means the copyrightable works distributed by
+Google as part of the Go project.
+
+Google hereby grants to You a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable (except as stated in this section)
+patent license to make, have made, use, offer to sell, sell, import,
+transfer and otherwise run, modify and propagate the contents of this
+implementation of Go, where such license applies only to those patent
+claims, both currently owned or controlled by Google and acquired in
+the future, licensable by Google that are necessarily infringed by this
+implementation of Go.  This grant does not include claims that would be
+infringed only as a consequence of further modification of this
+implementation.  If you or your agent or exclusive licensee institute or
+order or agree to the institution of patent litigation against any
+entity (including a cross-claim or counterclaim in a lawsuit) alleging
+that this implementation of Go or any code incorporated within this
+implementation of Go constitutes direct or contributory patent
+infringement, or inducement of patent infringement, then any patent
+rights granted to you under this License for this implementation of Go
+shall terminate as of the date such litigation is filed.
diff --git a/vendor/golang.org/x/net/context/context.go b/vendor/golang.org/x/net/context/context.go
new file mode 100644
index 0000000..cf66309
--- /dev/null
+++ b/vendor/golang.org/x/net/context/context.go
@@ -0,0 +1,56 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package context defines the Context type, which carries deadlines,
+// cancelation signals, and other request-scoped values across API boundaries
+// and between processes.
+// As of Go 1.7 this package is available in the standard library under the
+// name context.  https://golang.org/pkg/context.
+//
+// Incoming requests to a server should create a Context, and outgoing calls to
+// servers should accept a Context. The chain of function calls between must
+// propagate the Context, optionally replacing it with a modified copy created
+// using WithDeadline, WithTimeout, WithCancel, or WithValue.
+//
+// Programs that use Contexts should follow these rules to keep interfaces
+// consistent across packages and enable static analysis tools to check context
+// propagation:
+//
+// Do not store Contexts inside a struct type; instead, pass a Context
+// explicitly to each function that needs it. The Context should be the first
+// parameter, typically named ctx:
+//
+//	func DoSomething(ctx context.Context, arg Arg) error {
+//		// ... use ctx ...
+//	}
+//
+// Do not pass a nil Context, even if a function permits it. Pass context.TODO
+// if you are unsure about which Context to use.
+//
+// Use context Values only for request-scoped data that transits processes and
+// APIs, not for passing optional parameters to functions.
+//
+// The same Context may be passed to functions running in different goroutines;
+// Contexts are safe for simultaneous use by multiple goroutines.
+//
+// See http://blog.golang.org/context for example code for a server that uses
+// Contexts.
+package context // import "golang.org/x/net/context"
+
+// Background returns a non-nil, empty Context. It is never canceled, has no
+// values, and has no deadline. It is typically used by the main function,
+// initialization, and tests, and as the top-level Context for incoming
+// requests.
+func Background() Context {
+	return background
+}
+
+// TODO returns a non-nil, empty Context. Code should use context.TODO when
+// it's unclear which Context to use or it is not yet available (because the
+// surrounding function has not yet been extended to accept a Context
+// parameter).  TODO is recognized by static analysis tools that determine
+// whether Contexts are propagated correctly in a program.
+func TODO() Context {
+	return todo
+}
diff --git a/vendor/golang.org/x/net/context/go17.go b/vendor/golang.org/x/net/context/go17.go
new file mode 100644
index 0000000..0a54bdb
--- /dev/null
+++ b/vendor/golang.org/x/net/context/go17.go
@@ -0,0 +1,73 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build go1.7
+// +build go1.7
+
+package context
+
+import (
+	"context" // standard library's context, as of Go 1.7
+	"time"
+)
+
+var (
+	todo       = context.TODO()
+	background = context.Background()
+)
+
+// Canceled is the error returned by Context.Err when the context is canceled.
+var Canceled = context.Canceled
+
+// DeadlineExceeded is the error returned by Context.Err when the context's
+// deadline passes.
+var DeadlineExceeded = context.DeadlineExceeded
+
+// WithCancel returns a copy of parent with a new Done channel. The returned
+// context's Done channel is closed when the returned cancel function is called
+// or when the parent context's Done channel is closed, whichever happens first.
+//
+// Canceling this context releases resources associated with it, so code should
+// call cancel as soon as the operations running in this Context complete.
+func WithCancel(parent Context) (ctx Context, cancel CancelFunc) {
+	ctx, f := context.WithCancel(parent)
+	return ctx, CancelFunc(f)
+}
+
+// WithDeadline returns a copy of the parent context with the deadline adjusted
+// to be no later than d. If the parent's deadline is already earlier than d,
+// WithDeadline(parent, d) is semantically equivalent to parent. The returned
+// context's Done channel is closed when the deadline expires, when the returned
+// cancel function is called, or when the parent context's Done channel is
+// closed, whichever happens first.
+//
+// Canceling this context releases resources associated with it, so code should
+// call cancel as soon as the operations running in this Context complete.
+func WithDeadline(parent Context, deadline time.Time) (Context, CancelFunc) {
+	ctx, f := context.WithDeadline(parent, deadline)
+	return ctx, CancelFunc(f)
+}
+
+// WithTimeout returns WithDeadline(parent, time.Now().Add(timeout)).
+//
+// Canceling this context releases resources associated with it, so code should
+// call cancel as soon as the operations running in this Context complete:
+//
+//	func slowOperationWithTimeout(ctx context.Context) (Result, error) {
+//		ctx, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
+//		defer cancel()  // releases resources if slowOperation completes before timeout elapses
+//		return slowOperation(ctx)
+//	}
+func WithTimeout(parent Context, timeout time.Duration) (Context, CancelFunc) {
+	return WithDeadline(parent, time.Now().Add(timeout))
+}
+
+// WithValue returns a copy of parent in which the value associated with key is
+// val.
+//
+// Use context Values only for request-scoped data that transits processes and
+// APIs, not for passing optional parameters to functions.
+func WithValue(parent Context, key interface{}, val interface{}) Context {
+	return context.WithValue(parent, key, val)
+}
diff --git a/vendor/golang.org/x/net/context/go19.go b/vendor/golang.org/x/net/context/go19.go
new file mode 100644
index 0000000..64d31ec
--- /dev/null
+++ b/vendor/golang.org/x/net/context/go19.go
@@ -0,0 +1,21 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build go1.9
+// +build go1.9
+
+package context
+
+import "context" // standard library's context, as of Go 1.7
+
+// A Context carries a deadline, a cancelation signal, and other values across
+// API boundaries.
+//
+// Context's methods may be called by multiple goroutines simultaneously.
+type Context = context.Context
+
+// A CancelFunc tells an operation to abandon its work.
+// A CancelFunc does not wait for the work to stop.
+// After the first call, subsequent calls to a CancelFunc do nothing.
+type CancelFunc = context.CancelFunc
diff --git a/vendor/golang.org/x/net/context/pre_go17.go b/vendor/golang.org/x/net/context/pre_go17.go
new file mode 100644
index 0000000..7b6b685
--- /dev/null
+++ b/vendor/golang.org/x/net/context/pre_go17.go
@@ -0,0 +1,301 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !go1.7
+// +build !go1.7
+
+package context
+
+import (
+	"errors"
+	"fmt"
+	"sync"
+	"time"
+)
+
+// An emptyCtx is never canceled, has no values, and has no deadline. It is not
+// struct{}, since vars of this type must have distinct addresses.
+type emptyCtx int
+
+func (*emptyCtx) Deadline() (deadline time.Time, ok bool) {
+	return
+}
+
+func (*emptyCtx) Done() <-chan struct{} {
+	return nil
+}
+
+func (*emptyCtx) Err() error {
+	return nil
+}
+
+func (*emptyCtx) Value(key interface{}) interface{} {
+	return nil
+}
+
+func (e *emptyCtx) String() string {
+	switch e {
+	case background:
+		return "context.Background"
+	case todo:
+		return "context.TODO"
+	}
+	return "unknown empty Context"
+}
+
+var (
+	background = new(emptyCtx)
+	todo       = new(emptyCtx)
+)
+
+// Canceled is the error returned by Context.Err when the context is canceled.
+var Canceled = errors.New("context canceled")
+
+// DeadlineExceeded is the error returned by Context.Err when the context's
+// deadline passes.
+var DeadlineExceeded = errors.New("context deadline exceeded")
+
+// WithCancel returns a copy of parent with a new Done channel. The returned
+// context's Done channel is closed when the returned cancel function is called
+// or when the parent context's Done channel is closed, whichever happens first.
+//
+// Canceling this context releases resources associated with it, so code should
+// call cancel as soon as the operations running in this Context complete.
+func WithCancel(parent Context) (ctx Context, cancel CancelFunc) {
+	c := newCancelCtx(parent)
+	propagateCancel(parent, c)
+	return c, func() { c.cancel(true, Canceled) }
+}
+
+// newCancelCtx returns an initialized cancelCtx.
+func newCancelCtx(parent Context) *cancelCtx {
+	return &cancelCtx{
+		Context: parent,
+		done:    make(chan struct{}),
+	}
+}
+
+// propagateCancel arranges for child to be canceled when parent is.
+func propagateCancel(parent Context, child canceler) {
+	if parent.Done() == nil {
+		return // parent is never canceled
+	}
+	if p, ok := parentCancelCtx(parent); ok {
+		p.mu.Lock()
+		if p.err != nil {
+			// parent has already been canceled
+			child.cancel(false, p.err)
+		} else {
+			if p.children == nil {
+				p.children = make(map[canceler]bool)
+			}
+			p.children[child] = true
+		}
+		p.mu.Unlock()
+	} else {
+		go func() {
+			select {
+			case <-parent.Done():
+				child.cancel(false, parent.Err())
+			case <-child.Done():
+			}
+		}()
+	}
+}
+
+// parentCancelCtx follows a chain of parent references until it finds a
+// *cancelCtx. This function understands how each of the concrete types in this
+// package represents its parent.
+func parentCancelCtx(parent Context) (*cancelCtx, bool) {
+	for {
+		switch c := parent.(type) {
+		case *cancelCtx:
+			return c, true
+		case *timerCtx:
+			return c.cancelCtx, true
+		case *valueCtx:
+			parent = c.Context
+		default:
+			return nil, false
+		}
+	}
+}
+
+// removeChild removes a context from its parent.
+func removeChild(parent Context, child canceler) {
+	p, ok := parentCancelCtx(parent)
+	if !ok {
+		return
+	}
+	p.mu.Lock()
+	if p.children != nil {
+		delete(p.children, child)
+	}
+	p.mu.Unlock()
+}
+
+// A canceler is a context type that can be canceled directly. The
+// implementations are *cancelCtx and *timerCtx.
+type canceler interface {
+	cancel(removeFromParent bool, err error)
+	Done() <-chan struct{}
+}
+
+// A cancelCtx can be canceled. When canceled, it also cancels any children
+// that implement canceler.
+type cancelCtx struct {
+	Context
+
+	done chan struct{} // closed by the first cancel call.
+
+	mu       sync.Mutex
+	children map[canceler]bool // set to nil by the first cancel call
+	err      error             // set to non-nil by the first cancel call
+}
+
+func (c *cancelCtx) Done() <-chan struct{} {
+	return c.done
+}
+
+func (c *cancelCtx) Err() error {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	return c.err
+}
+
+func (c *cancelCtx) String() string {
+	return fmt.Sprintf("%v.WithCancel", c.Context)
+}
+
+// cancel closes c.done, cancels each of c's children, and, if
+// removeFromParent is true, removes c from its parent's children.
+func (c *cancelCtx) cancel(removeFromParent bool, err error) {
+	if err == nil {
+		panic("context: internal error: missing cancel error")
+	}
+	c.mu.Lock()
+	if c.err != nil {
+		c.mu.Unlock()
+		return // already canceled
+	}
+	c.err = err
+	close(c.done)
+	for child := range c.children {
+		// NOTE: acquiring the child's lock while holding parent's lock.
+		child.cancel(false, err)
+	}
+	c.children = nil
+	c.mu.Unlock()
+
+	if removeFromParent {
+		removeChild(c.Context, c)
+	}
+}
+
+// WithDeadline returns a copy of the parent context with the deadline adjusted
+// to be no later than d. If the parent's deadline is already earlier than d,
+// WithDeadline(parent, d) is semantically equivalent to parent. The returned
+// context's Done channel is closed when the deadline expires, when the returned
+// cancel function is called, or when the parent context's Done channel is
+// closed, whichever happens first.
+//
+// Canceling this context releases resources associated with it, so code should
+// call cancel as soon as the operations running in this Context complete.
+func WithDeadline(parent Context, deadline time.Time) (Context, CancelFunc) {
+	if cur, ok := parent.Deadline(); ok && cur.Before(deadline) {
+		// The current deadline is already sooner than the new one.
+		return WithCancel(parent)
+	}
+	c := &timerCtx{
+		cancelCtx: newCancelCtx(parent),
+		deadline:  deadline,
+	}
+	propagateCancel(parent, c)
+	d := deadline.Sub(time.Now())
+	if d <= 0 {
+		c.cancel(true, DeadlineExceeded) // deadline has already passed
+		return c, func() { c.cancel(true, Canceled) }
+	}
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	if c.err == nil {
+		c.timer = time.AfterFunc(d, func() {
+			c.cancel(true, DeadlineExceeded)
+		})
+	}
+	return c, func() { c.cancel(true, Canceled) }
+}
+
+// A timerCtx carries a timer and a deadline. It embeds a cancelCtx to
+// implement Done and Err. It implements cancel by stopping its timer then
+// delegating to cancelCtx.cancel.
+type timerCtx struct {
+	*cancelCtx
+	timer *time.Timer // Under cancelCtx.mu.
+
+	deadline time.Time
+}
+
+func (c *timerCtx) Deadline() (deadline time.Time, ok bool) {
+	return c.deadline, true
+}
+
+func (c *timerCtx) String() string {
+	return fmt.Sprintf("%v.WithDeadline(%s [%s])", c.cancelCtx.Context, c.deadline, c.deadline.Sub(time.Now()))
+}
+
+func (c *timerCtx) cancel(removeFromParent bool, err error) {
+	c.cancelCtx.cancel(false, err)
+	if removeFromParent {
+		// Remove this timerCtx from its parent cancelCtx's children.
+		removeChild(c.cancelCtx.Context, c)
+	}
+	c.mu.Lock()
+	if c.timer != nil {
+		c.timer.Stop()
+		c.timer = nil
+	}
+	c.mu.Unlock()
+}
+
+// WithTimeout returns WithDeadline(parent, time.Now().Add(timeout)).
+//
+// Canceling this context releases resources associated with it, so code should
+// call cancel as soon as the operations running in this Context complete:
+//
+//	func slowOperationWithTimeout(ctx context.Context) (Result, error) {
+//		ctx, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
+//		defer cancel()  // releases resources if slowOperation completes before timeout elapses
+//		return slowOperation(ctx)
+//	}
+func WithTimeout(parent Context, timeout time.Duration) (Context, CancelFunc) {
+	return WithDeadline(parent, time.Now().Add(timeout))
+}
+
+// WithValue returns a copy of parent in which the value associated with key is
+// val.
+//
+// Use context Values only for request-scoped data that transits processes and
+// APIs, not for passing optional parameters to functions.
+func WithValue(parent Context, key interface{}, val interface{}) Context {
+	return &valueCtx{parent, key, val}
+}
+
+// A valueCtx carries a key-value pair. It implements Value for that key and
+// delegates all other calls to the embedded Context.
+type valueCtx struct {
+	Context
+	key, val interface{}
+}
+
+func (c *valueCtx) String() string {
+	return fmt.Sprintf("%v.WithValue(%#v, %#v)", c.Context, c.key, c.val)
+}
+
+func (c *valueCtx) Value(key interface{}) interface{} {
+	if c.key == key {
+		return c.val
+	}
+	return c.Context.Value(key)
+}
diff --git a/vendor/golang.org/x/net/context/pre_go19.go b/vendor/golang.org/x/net/context/pre_go19.go
new file mode 100644
index 0000000..1f97153
--- /dev/null
+++ b/vendor/golang.org/x/net/context/pre_go19.go
@@ -0,0 +1,110 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !go1.9
+// +build !go1.9
+
+package context
+
+import "time"
+
+// A Context carries a deadline, a cancelation signal, and other values across
+// API boundaries.
+//
+// Context's methods may be called by multiple goroutines simultaneously.
+type Context interface {
+	// Deadline returns the time when work done on behalf of this context
+	// should be canceled. Deadline returns ok==false when no deadline is
+	// set. Successive calls to Deadline return the same results.
+	Deadline() (deadline time.Time, ok bool)
+
+	// Done returns a channel that's closed when work done on behalf of this
+	// context should be canceled. Done may return nil if this context can
+	// never be canceled. Successive calls to Done return the same value.
+	//
+	// WithCancel arranges for Done to be closed when cancel is called;
+	// WithDeadline arranges for Done to be closed when the deadline
+	// expires; WithTimeout arranges for Done to be closed when the timeout
+	// elapses.
+	//
+	// Done is provided for use in select statements:
+	//
+	//  // Stream generates values with DoSomething and sends them to out
+	//  // until DoSomething returns an error or ctx.Done is closed.
+	//  func Stream(ctx context.Context, out chan<- Value) error {
+	//  	for {
+	//  		v, err := DoSomething(ctx)
+	//  		if err != nil {
+	//  			return err
+	//  		}
+	//  		select {
+	//  		case <-ctx.Done():
+	//  			return ctx.Err()
+	//  		case out <- v:
+	//  		}
+	//  	}
+	//  }
+	//
+	// See http://blog.golang.org/pipelines for more examples of how to use
+	// a Done channel for cancelation.
+	Done() <-chan struct{}
+
+	// Err returns a non-nil error value after Done is closed. Err returns
+	// Canceled if the context was canceled or DeadlineExceeded if the
+	// context's deadline passed. No other values for Err are defined.
+	// After Done is closed, successive calls to Err return the same value.
+	Err() error
+
+	// Value returns the value associated with this context for key, or nil
+	// if no value is associated with key. Successive calls to Value with
+	// the same key returns the same result.
+	//
+	// Use context values only for request-scoped data that transits
+	// processes and API boundaries, not for passing optional parameters to
+	// functions.
+	//
+	// A key identifies a specific value in a Context. Functions that wish
+	// to store values in Context typically allocate a key in a global
+	// variable then use that key as the argument to context.WithValue and
+	// Context.Value. A key can be any type that supports equality;
+	// packages should define keys as an unexported type to avoid
+	// collisions.
+	//
+	// Packages that define a Context key should provide type-safe accessors
+	// for the values stores using that key:
+	//
+	// 	// Package user defines a User type that's stored in Contexts.
+	// 	package user
+	//
+	// 	import "golang.org/x/net/context"
+	//
+	// 	// User is the type of value stored in the Contexts.
+	// 	type User struct {...}
+	//
+	// 	// key is an unexported type for keys defined in this package.
+	// 	// This prevents collisions with keys defined in other packages.
+	// 	type key int
+	//
+	// 	// userKey is the key for user.User values in Contexts. It is
+	// 	// unexported; clients use user.NewContext and user.FromContext
+	// 	// instead of using this key directly.
+	// 	var userKey key = 0
+	//
+	// 	// NewContext returns a new Context that carries value u.
+	// 	func NewContext(ctx context.Context, u *User) context.Context {
+	// 		return context.WithValue(ctx, userKey, u)
+	// 	}
+	//
+	// 	// FromContext returns the User value stored in ctx, if any.
+	// 	func FromContext(ctx context.Context) (*User, bool) {
+	// 		u, ok := ctx.Value(userKey).(*User)
+	// 		return u, ok
+	// 	}
+	Value(key interface{}) interface{}
+}
+
+// A CancelFunc tells an operation to abandon its work.
+// A CancelFunc does not wait for the work to stop.
+// After the first call, subsequent calls to a CancelFunc do nothing.
+type CancelFunc func()
diff --git a/vendor/modules.txt b/vendor/modules.txt
new file mode 100644
index 0000000..acaf072
--- /dev/null
+++ b/vendor/modules.txt
@@ -0,0 +1,10 @@
+# github.com/abbot/go-http-auth v0.4.0
+## explicit
+github.com/abbot/go-http-auth
+# golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e
+## explicit; go 1.17
+golang.org/x/crypto/bcrypt
+golang.org/x/crypto/blowfish
+# golang.org/x/net v0.0.0-20220614195744-fb05da6f9022
+## explicit; go 1.17
+golang.org/x/net/context