Fix gitsign for public Sigstore changes. (#50)

* Fix gitsign for public Sigstore changes.

There were a few updates to public sigstore today, that ended up
breaking gitsign.

1. Fulcio now uses an intermediary cert. TIL that DER encoding will sort
   values for stability, which means that the ordering of these certs
   can change. This PR fixes gitsign for the public instance, by restricting the
   certs included to just the leaf cert (which is probably okay in most cases?).
2. Rekor now uses a sharded entry ID, which breaks how we were looking
   up Rekor entries since the sharded entry ID didn't match the
   underlying UUID (even though it did). Added normalization to work for
   either case.

Also updates rekor/cosign deps, we need rekor >= 0.5
(https://blog.sigstore.dev/sigstore-project-update-march-2022-bf34aa632388)

Signed-off-by: Billy Lynch <billy@chainguard.dev>

command_verify.go

@@ -155,7 +155,8 @@ func verifyDetached() error {
 
 func verifyOpts() x509.VerifyOptions {
 	return x509.VerifyOptions{
-		Roots:     fulcioroots.Get(),
-		KeyUsages: []x509.ExtKeyUsage{x509.ExtKeyUsageAny},
+		Roots:         fulcioroots.Get(),
+		Intermediates: fulcioroots.GetIntermediates(),
+		KeyUsages:     []x509.ExtKeyUsage{x509.ExtKeyUsageAny},
 	}
 }

go.mod

@@ -9,19 +9,19 @@ require (
 	github.com/go-openapi/strfmt v0.21.2
 	github.com/go-openapi/swag v0.21.1
 	github.com/pborman/getopt v0.0.0-20180811024354-2b5b3bfb099b
-	github.com/sigstore/cosign v1.8.1-0.20220502185546-8efb042c0427
-	github.com/sigstore/rekor v0.4.1-0.20220114213500-23f583409af3
-	github.com/sigstore/sigstore v1.2.1-0.20220424143412-3d41663116d5
+	github.com/sigstore/cosign v1.8.1-0.20220601172726-ae90c7495df6
+	github.com/sigstore/rekor v0.7.0
+	github.com/sigstore/sigstore v1.2.1-0.20220512194100-3ed986cc9758
 	golang.org/x/crypto v0.0.0-20220411220226-7b82a4e95df4
 )
 
 require (
-	bitbucket.org/creachadair/shell v0.0.6 // indirect
+	bitbucket.org/creachadair/shell v0.0.7 // indirect
 	cloud.google.com/go v0.100.2 // indirect
-	cloud.google.com/go/compute v1.6.0 // indirect
+	cloud.google.com/go/compute v1.6.1 // indirect
 	cloud.google.com/go/iam v0.3.0 // indirect
-	cloud.google.com/go/storage v1.22.0 // indirect
-	github.com/Azure/azure-sdk-for-go v63.3.0+incompatible // indirect
+	cloud.google.com/go/storage v1.22.1 // indirect
+	github.com/Azure/azure-sdk-for-go v64.0.0+incompatible // indirect
 	github.com/Azure/go-autorest v14.2.0+incompatible // indirect
 	github.com/Azure/go-autorest/autorest v0.11.27 // indirect
 	github.com/Azure/go-autorest/autorest/adal v0.9.18 // indirect
@@ -34,8 +34,6 @@ require (
 	github.com/PaesslerAG/gval v1.0.0 // indirect
 	github.com/PaesslerAG/jsonpath v0.1.1 // indirect
 	github.com/ProtonMail/go-crypto v0.0.0-20210428141323-04723f9f07d7 // indirect
-	github.com/PuerkitoBio/purell v1.1.1 // indirect
-	github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect
 	github.com/ThalesIgnite/crypto11 v1.2.5 // indirect
 	github.com/acomagu/bufpipe v1.0.3 // indirect
 	github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d // indirect
@@ -64,7 +62,7 @@ require (
 	github.com/cncf/xds/go v0.0.0-20211130200136-a8f946100490 // indirect
 	github.com/common-nighthawk/go-figure v0.0.0-20210622060536-734e95fb86be // indirect
 	github.com/containerd/stargz-snapshotter/estargz v0.10.1 // indirect
-	github.com/coreos/go-oidc/v3 v3.1.0 // indirect
+	github.com/coreos/go-oidc/v3 v3.2.0 // indirect
 	github.com/coreos/go-semver v0.3.0 // indirect
 	github.com/coreos/go-systemd/v22 v22.3.2 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.1 // indirect
@@ -80,8 +78,8 @@ require (
 	github.com/envoyproxy/go-control-plane v0.10.2-0.20220325020618-49ff273808a1 // indirect
 	github.com/envoyproxy/protoc-gen-validate v0.6.2 // indirect
 	github.com/form3tech-oss/jwt-go v3.2.5+incompatible // indirect
-	github.com/fsnotify/fsnotify v1.5.1 // indirect
-	github.com/fullstorydev/grpcurl v1.8.2 // indirect
+	github.com/fsnotify/fsnotify v1.5.4 // indirect
+	github.com/fullstorydev/grpcurl v1.8.6 // indirect
 	github.com/ghodss/yaml v1.0.0 // indirect
 	github.com/go-chi/chi v4.1.2+incompatible // indirect
 	github.com/go-git/gcfg v1.5.0 // indirect
@@ -90,14 +88,14 @@ require (
 	github.com/go-openapi/analysis v0.21.2 // indirect
 	github.com/go-openapi/errors v0.20.2 // indirect
 	github.com/go-openapi/jsonpointer v0.19.5 // indirect
-	github.com/go-openapi/jsonreference v0.19.6 // indirect
+	github.com/go-openapi/jsonreference v0.20.0 // indirect
 	github.com/go-openapi/loads v0.21.1 // indirect
-	github.com/go-openapi/spec v0.20.4 // indirect
+	github.com/go-openapi/spec v0.20.6 // indirect
 	github.com/go-openapi/validate v0.21.0 // indirect
 	github.com/go-piv/piv-go v1.9.0 // indirect
 	github.com/go-playground/locales v0.14.0 // indirect
 	github.com/go-playground/universal-translator v0.18.0 // indirect
-	github.com/go-playground/validator/v10 v10.10.0 // indirect
+	github.com/go-playground/validator/v10 v10.11.0 // indirect
 	github.com/go-stack/stack v1.8.1 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang-jwt/jwt/v4 v4.3.0 // indirect
@@ -113,8 +111,9 @@ require (
 	github.com/google/go-github/v42 v42.0.0 // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
-	github.com/google/trillian v1.4.0 // indirect
-	github.com/googleapis/gax-go/v2 v2.3.0 // indirect
+	github.com/google/trillian v1.4.1 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/googleapis/gax-go/v2 v2.4.0 // indirect
 	github.com/googleapis/gnostic v0.5.5 // indirect
 	github.com/googleapis/go-type-adapters v1.0.0 // indirect
 	github.com/gorilla/websocket v1.4.2 // indirect
@@ -129,10 +128,10 @@ require (
 	github.com/in-toto/in-toto-golang v0.3.4-0.20211211042327-af1f9fb822bf // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
-	github.com/jedisct1/go-minisign v0.0.0-20210703085342-c1f07ee84431 // indirect
-	github.com/jhump/protoreflect v1.9.0 // indirect
+	github.com/jedisct1/go-minisign v0.0.0-20211028175153-1c139d1cc84b // indirect
+	github.com/jhump/protoreflect v1.10.3 // indirect
 	github.com/jmespath/go-jmespath v0.4.0 // indirect
-	github.com/jonboulle/clockwork v0.2.2 // indirect
+	github.com/jonboulle/clockwork v0.3.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/compress v1.14.2 // indirect
@@ -152,18 +151,18 @@ require (
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.3-0.20220114050600-8b9d41f48198 // indirect
 	github.com/opentracing/opentracing-go v1.2.0 // indirect
-	github.com/pelletier/go-toml v1.9.4 // indirect
-	github.com/pelletier/go-toml/v2 v2.0.0-beta.8 // indirect
+	github.com/pelletier/go-toml v1.9.5 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.1 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/prometheus/client_golang v1.12.1 // indirect
+	github.com/prometheus/client_golang v1.12.2 // indirect
 	github.com/prometheus/client_model v0.2.0 // indirect
-	github.com/prometheus/common v0.32.1 // indirect
+	github.com/prometheus/common v0.34.0 // indirect
 	github.com/prometheus/procfs v0.7.3 // indirect
 	github.com/rivo/uniseg v0.2.0 // indirect
 	github.com/rogpeppe/go-internal v1.8.1 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/sassoftware/relic v0.0.0-20210427151427-dfb082b79b74 // indirect
-	github.com/secure-systems-lab/go-securesystemslib v0.3.1 // indirect
+	github.com/secure-systems-lab/go-securesystemslib v0.4.0 // indirect
 	github.com/segmentio/ksuid v1.0.4 // indirect
 	github.com/sergi/go-diff v1.2.0 // indirect
 	github.com/shibumi/go-pathspec v1.3.0 // indirect
@@ -172,39 +171,40 @@ require (
 	github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966 // indirect
 	github.com/soheilhy/cmux v0.1.5 // indirect
 	github.com/spf13/afero v1.8.2 // indirect
-	github.com/spf13/cast v1.4.1 // indirect
+	github.com/spf13/cast v1.5.0 // indirect
 	github.com/spf13/cobra v1.4.0 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	github.com/spf13/viper v1.11.0 // indirect
+	github.com/spf13/viper v1.12.0 // indirect
 	github.com/spiffe/go-spiffe/v2 v2.1.0 // indirect
-	github.com/subosito/gotenv v1.2.0 // indirect
+	github.com/subosito/gotenv v1.3.0 // indirect
 	github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 // indirect
 	github.com/tent/canonical-json-go v0.0.0-20130607151641-96e4ba3a7613 // indirect
 	github.com/thales-e-security/pool v0.0.2 // indirect
-	github.com/theupdateframework/go-tuf v0.0.0-20220211205608-f0c3294f63b9 // indirect
+	github.com/theupdateframework/go-tuf v0.3.0 // indirect
 	github.com/titanous/rocacheck v0.0.0-20171023193734-afe73141d399 // indirect
 	github.com/tmc/grpc-websocket-proxy v0.0.0-20201229170055-e5319fda7802 // indirect
-	github.com/urfave/cli v1.22.5 // indirect
+	github.com/transparency-dev/merkle v0.0.1 // indirect
+	github.com/urfave/cli v1.22.7 // indirect
 	github.com/vbatts/tar-split v0.11.2 // indirect
-	github.com/xanzy/go-gitlab v0.64.0 // indirect
+	github.com/xanzy/go-gitlab v0.68.0 // indirect
 	github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 // indirect
 	github.com/zeebo/errs v1.2.2 // indirect
 	go.etcd.io/bbolt v1.3.6 // indirect
-	go.etcd.io/etcd/api/v3 v3.5.2 // indirect
-	go.etcd.io/etcd/client/pkg/v3 v3.5.2 // indirect
-	go.etcd.io/etcd/client/v2 v2.305.2 // indirect
-	go.etcd.io/etcd/client/v3 v3.5.0 // indirect
-	go.etcd.io/etcd/etcdctl/v3 v3.5.0 // indirect
-	go.etcd.io/etcd/etcdutl/v3 v3.5.0 // indirect
-	go.etcd.io/etcd/pkg/v3 v3.5.0 // indirect
-	go.etcd.io/etcd/raft/v3 v3.5.0 // indirect
-	go.etcd.io/etcd/server/v3 v3.5.0 // indirect
-	go.etcd.io/etcd/tests/v3 v3.5.0 // indirect
-	go.etcd.io/etcd/v3 v3.5.0 // indirect
+	go.etcd.io/etcd/api/v3 v3.5.4 // indirect
+	go.etcd.io/etcd/client/pkg/v3 v3.5.4 // indirect
+	go.etcd.io/etcd/client/v2 v2.305.4 // indirect
+	go.etcd.io/etcd/client/v3 v3.5.4 // indirect
+	go.etcd.io/etcd/etcdctl/v3 v3.5.4 // indirect
+	go.etcd.io/etcd/etcdutl/v3 v3.5.4 // indirect
+	go.etcd.io/etcd/pkg/v3 v3.5.4 // indirect
+	go.etcd.io/etcd/raft/v3 v3.5.4 // indirect
+	go.etcd.io/etcd/server/v3 v3.5.4 // indirect
+	go.etcd.io/etcd/tests/v3 v3.5.4 // indirect
+	go.etcd.io/etcd/v3 v3.5.4 // indirect
 	go.mongodb.org/mongo-driver v1.8.3 // indirect
 	go.opencensus.io v0.23.0 // indirect
-	go.opentelemetry.io/contrib v1.3.0 // indirect
+	go.opentelemetry.io/contrib v1.6.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.20.0 // indirect
 	go.opentelemetry.io/otel v0.20.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp v0.20.0 // indirect
@@ -215,22 +215,22 @@ require (
 	go.opentelemetry.io/otel/trace v0.20.0 // indirect
 	go.opentelemetry.io/proto/otlp v0.12.0 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
-	go.uber.org/multierr v1.7.0 // indirect
+	go.uber.org/multierr v1.8.0 // indirect
 	go.uber.org/zap v1.21.0 // indirect
 	golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3 // indirect
-	golang.org/x/net v0.0.0-20220412020605-290c469a71a5 // indirect
+	golang.org/x/net v0.0.0-20220520000938-2e3eb7b945c2 // indirect
 	golang.org/x/oauth2 v0.0.0-20220411215720-9780585627b5 // indirect
-	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
-	golang.org/x/sys v0.0.0-20220412211240-33da011f77ad // indirect
+	golang.org/x/sync v0.0.0-20220513210516-0976fa681c29 // indirect
+	golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a // indirect
 	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 // indirect
 	golang.org/x/text v0.3.7 // indirect
-	golang.org/x/time v0.0.0-20220224211638-0e9765cccd65 // indirect
+	golang.org/x/time v0.0.0-20220411224347-583f2d630306 // indirect
 	golang.org/x/tools v0.1.10 // indirect
-	golang.org/x/xerrors v0.0.0-20220411194840-2f41105eb62f // indirect
-	google.golang.org/api v0.76.0 // indirect
+	golang.org/x/xerrors v0.0.0-20220517211312-f3a8303e98df // indirect
+	google.golang.org/api v0.81.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/genproto v0.0.0-20220414192740-2d67ff6cf2b4 // indirect
-	google.golang.org/grpc v1.46.0 // indirect
+	google.golang.org/genproto v0.0.0-20220519153652-3a47de7e79bd // indirect
+	google.golang.org/grpc v1.46.2 // indirect
 	google.golang.org/protobuf v1.28.0 // indirect
 	gopkg.in/cheggaaa/pb.v1 v1.0.28 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
@@ -239,7 +239,7 @@ require (
 	gopkg.in/square/go-jose.v2 v2.6.0 // indirect
 	gopkg.in/warnings.v0 v0.1.2 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+	gopkg.in/yaml.v3 v3.0.0 // indirect
 	gotest.tools/v3 v3.1.0 // indirect
 	k8s.io/api v0.23.5 // indirect
 	k8s.io/apimachinery v0.23.5 // indirect