6. createPresentation

基本信息

接口名称:com.webank.weid.rpc.CredentialPojoService.createPresentation
接口定义: ResponseData<PresentationE> createPresentation(List<CredentialPojo> credentialList, PresentationPolicyE presentationPolicyE, Challenge challenge, WeIdAuthentication weIdAuthentication)
接口描述: 创建Presentation。

接口入参:

java.uitl.List<com.webank.weid.protocol.base.CredentialPojo>

com.webank.weid.protocol.base.CredentialPojo

com.webank.weid.protocol.base.PresentationPolicyE

com.webank.weid.protocol.base.Challenge

com.webank.weid.protocol.base.WeIdAuthentication

接口返回: com.webank.weid.protocol.response.ResponseData<PresentationE>;

com.webank.weid.protocol.response.TransactionInfo

com.webank.weid.protocol.base.PresentationE

此方法返回code

调用示例

CredentialPojoService credentialPojoService = new CredentialPojoServiceImpl();
CreateCredentialPojoArgs<Map<String, Object>> createCredentialPojoArgs = new CreateCredentialPojoArgs<Map<String, Object>>();
createCredentialPojoArgs.setCptId(1017);
createCredentialPojoArgs.setIssuer("did:weid:101:0x39e5e6f663ef77409144014ceb063713b65600e7");
createCredentialPojoArgs.setExpirationDate(System.currentTimeMillis() + 1000 * 60 * 60 * 24 * 100);
 
WeIdAuthentication weIdAuthentication = new WeIdAuthentication();
weIdAuthentication.setWeId("did:weid:101:0x39e5e6f663ef77409144014ceb063713b65600e7");
 
WeIdPrivateKey weIdPrivateKey = new WeIdPrivateKey();
weIdPrivateKey.setPrivateKey("60866441986950167911324536025850958917764441489874006048340539971987791929772");
weIdAuthentication.setWeIdPrivateKey(weIdPrivateKey);
 
weIdAuthentication.setWeIdPublicKeyId("did:weid:101:0x39e5e6f663ef77409144014ceb063713b65600e7#key0");
createCredentialPojoArgs.setWeIdAuthentication(weIdAuthentication);
 
Map<String, Object> claim = new HashMap<String, Object>();
claim.put("name", "zhang san");
claim.put("gender", "F");
claim.put("age", 22);
createCredentialPojoArgs.setClaim(claim);
 
//创建CredentialPojo
ResponseData<CredentialPojo> response = credentialPojoService.createCredential(createCredentialPojoArgs);
 
List<CredentialPojo> credentialList = new ArrayList<CredentialPojo>();
credentialList.add(response.getResult());
 
//创建Challenge
Challenge challenge = Challenge.create("did:weid:101:0x39e5e6f663ef77409144014ceb063713b65600e7", String.valueOf(System.currentTimeMillis()));
 
//创建PresentationPolicyE
String policyJson = "{\"extra\" : {\"extra1\" : \"\",\"extra2\" : \"\"},\"id\" : 123456,\"version\" : 1,\"orgId\" : \"webank\",\"weId\" : \"did:weid:0x0231765e19955fc65133ec8591d73e9136306cd0\",\"policy\" : {\"1017\" : {\"fieldsToBeDisclosed\" : {\"gender\" : 0,\"name\" : 1,\"age\" : 0}}}}";
PresentationPolicyE presentationPolicyE = PresentationPolicyE.fromJson(policyJson);
 
//创建Presentation
ResponseData<PresentationE>  presentationE = credentialPojoService.createPresentation(credentialList, presentationPolicyE, challenge, weIdAuthentication);

返回结果如：
result:(com.webank.weid.protocol.base.PresentationE)
   context:(java.util.ArrayList)
      [0]:https://github.com/WeBankFinTech/WeIdentity/blob/master/context/v1
   type:(java.util.ArrayList)
      [0]:VerifiablePresentation
   verifiableCredential:(java.util.ArrayList)
      [0]:com.webank.weid.protocol.base.CredentialPojo
         context: https://github.com/WeBankFinTech/WeIdentity/blob/master/context/v1
         id: 67598cc5-a922-4e9f-ae0a-90c6285a8236
         cptId: 1017
         issuer: did:weid:101:0x39e5e6f663ef77409144014ceb063713b65600e7
         issuanceDate: 1560425696276
         expirationDate: 1560475761684
         claim:(java.util.HashMap)
            gender: 0x8dba4ce05ca123e0c48b877f461e1b8c362fcab9d03330dcb80d7d039081f50b
            name: zhangsan
            age: 0xdeb5a47d7ab03d9fefe2169cc59db146cec6f24005bcf0b2e2a0c95bfe7adde5
         proof:(java.util.HashMap)
            creator: did:weid:101:0x39e5e6f663ef77409144014ceb063713b65600e7#key0
            salt:(java.util.HashMap)
               gender: 0
               name: yjckg
               age: 0
            created: 1560425696276
            type: Secp256k1
            signatureValue: HCgmoX0f7ZYkwpd+pJ2+RCRKNt5lf9nbl8g9YWTSuA32IIoRSjMr7GPZVbe5bcu+hD/pnkAJbbinJo4/YqOOync=
         type:(java.util.ArrayList)
            [0]:VerifiableCredential
   proof:(java.util.HashMap)
      created: 1560425696412
      type: Secp256k1
      verificationMethod: did:weid:101:0x39e5e6f663ef77409144014ceb063713b65600e7#key0
      nonce: DJulONVxD2TFidB8vaYH
      signatureValue: G8ivS1e625NT8qSzLEugbqkRW6HDJNA4Lfcl7uCXV+uEffPMVF6Bwnk0pyCOd+4bbw90pMaj+EVxeL79acYPzM4=
errorCode: 0
errorMessage: success
transactionInfo:null

时序图

sequenceDiagramparticipant 调用者participant CredentialPojoService调用者->>CredentialPojoService: 调用verify()CredentialPojoService->>CredentialPojoService: 入参非空、格式及合法性检查opt 入参校验失败CredentialPojoService—>>调用者: 报错，提示参数不合法并退出endloop 遍历credentialPojo列表CredentialPojoService->>CredentialPojoService: 根据credentialPojo中的cptId获取对应的claimPolicyopt claimPolicyCredentialPojoService—>>调用者: continueendCredentialPojoService->>CredentialPojoService: 根据claimPolicy，调用createSelectiveCredential()方法，做选择性披露opt 选择性披露失败CredentialPojoService—>>调用者: 失败退出endendCredentialPojoService->>CredentialPojoService: 设置context等元数据属性CredentialPojoService->>CredentialPojoService: 对presentation整体签名，放入proof结构，同时设置其他proof属性，用于验证CredentialPojoService—>>调用者: 返回成功