CU-2tyd7tq - Add the README to show how to generate SERVICE_DID and N…

…ODE_CREDENTIAL .

config/README.md

@@ -0,0 +1,82 @@
+Elastos Hive Node Configuration
+===============================
+
+To generate .env file for running the hive node manually, please check the file .env.sample.
+
+[didutils](https://github.com/elastos/Elastos.DID.Java.SDK/releases) tool can be used to generate some items, such as NODE_CREDENTIAL, etc.
+
+## SERVICE_DID
+
+Every hive node has a service DID which represents the hive node instance. SERVICE_DID is base58 string and its content comes from the data exported by `didutils`. Here is the example:
+
+```shell
+$ ./didutils sh
+Network: mainnet
+
+# create a new did locally which is used to generate the service DID
+didshell $ id create userDid2
+Mnemonic: student world target pride pipe spare submit hour genuine enjoy brief *****
+Please write down your mnemonics safely!!!
+Passphrase(enter for empty): 
+Password: 
+Confirm password: 
+Wallet 0x81bb9e89d73a72bd54397866bbe55c648e7**** created.
+Identity userDid2:ee8c5edff928cf49d68e82f0d16d**** created.
+DID did:elastos:ioyEoaqfLK8TYvNF4DtnR36Zc8u8p3**** created.
+Switched to the identity: userDid2
+
+# create the service DID
+didshell $ did createappdid io.trinity-tech.example 619
+Password: 
+DID did:elastos:ipUGBPuAgEx6Le99f4TyDfNZtXVT2N**** created.
+
+DID document:
+{
+  # here is the content of the DID content.
+  # ......
+}
+
+# export the content of the service DID.
+didshell $ did export -o ~/ipUGBPuAgEx6Le99f4TyDfNZtXVT2**** did:elastos:ipUGBPuAgEx6Le99f4TyDfNZtXVT2N****
+Export password: 
+Confirm export password: 
+
+# please use the content of file ~/ipUGBPuAgEx6Le99f4TyDfNZtXVT2**** as service DID.
+```
+
+## NODE_CREDENTIAL
+
+NODE_CREDENTIAL is also base58 string which contains the credential issued by the owner DID and also generated by `didutils`. Here is the example:
+
+```shell
+# ./didutils sh
+Network: mainnet
+Identity: userDid2, DID: did:elastos:ioyEoaqfLK8TYvNF4DtnR36Zc8u8p3****
+
+# create the credential from current DID.
+didshell $ vc issue did:elastos:ipUGBPuAgEx6Le99f4TyDfNZtXVT2N****
+Types(comma separated URI list): https://ns.elastos.org/credentials/hive/nodeowner/v1#HiveNodeOwnerCredential
+Subject(JSON format): 
+Validation period(h/d/m/y): 3y
+Credential did:elastos:ipUGBPuAgEx6Le99f4TyDfNZtXVT2NKXPR#B7fLV2XXjYkvpardVmXuep created.
+
+Credential:
+# this is the expected credential content.
+{
+  "@context" : [ "https://www.w3.org/2018/credentials/v1", "https://ns.elastos.org/credentials/v1", "https://ns.elastos.org/credentials/hive/nodeowner/v1" ],
+  "id" : "did:elastos:ipUGBPuAgEx6Le99f4TyDfNZtXVT2N****#B7fLV2XXjYkvpardVmXuep",
+  "type" : [ "HiveNodeOwnerCredential", "VerifiableCredential" ],
+  "issuer" : "did:elastos:ioyEoaqfLK8TYvNF4DtnR36Zc8u8p3****",
+  "issuanceDate" : "2022-04-18T06:36:33Z",
+  "expirationDate" : "2025-04-18T06:36:33Z",
+  "credentialSubject" : {
+    "id" : "did:elastos:ipUGBPuAgEx6Le99f4TyDfNZtXVT2N****"
+  },
+  "proof" : {
+    "type" : "ECDSAsecp256r1",
+    "created" : "2022-04-18T06:36:33Z",
+    "verificationMethod" : "did:elastos:ioyEoaqfLK8TYvNF4DtnR36Zc8u8p3****#primary",
+    "signature" : "7wGQIRnYFaKR-cQZSMBOoaMdI2luMOLu_PgzSDGePoZ3L-XaRYiNttCZtQkERo7-0_DGEivVik-ctTCEQo****"
+  }
+}
+```