feat(indy-vdr): resolver and registrar for did:indy (openwallet-found…

…ation#1253)

Signed-off-by: Ariel Gentile <gentilester@gmail.com>

packages/indy-vdr/package.json

@@ -30,7 +30,9 @@
   },
   "devDependencies": {
     "@hyperledger/indy-vdr-nodejs": "^0.1.0-dev.4",
+    "@stablelib/ed25519": "^1.0.2",
     "rimraf": "^4.0.7",
+    "rxjs": "^7.2.0",
     "typescript": "~4.9.4"
   }
 }

packages/indy-vdr/src/dids/IndyVdrIndyDidRegistrar.ts

@@ -0,0 +1,334 @@
+import type { IndyEndpointAttrib } from './didSovUtil'
+import type { IndyVdrPool } from '../pool'
+import type {
+  AgentContext,
+  DidRegistrar,
+  DidCreateOptions,
+  DidCreateResult,
+  DidDeactivateResult,
+  DidUpdateResult,
+  DidDocumentService,
+} from '@aries-framework/core'
+
+import {
+  IndyAgentService,
+  DidCommV1Service,
+  DidCommV2Service,
+  Hasher,
+  TypedArrayEncoder,
+  Key,
+  KeyType,
+  DidDocumentRole,
+  DidRecord,
+  DidRepository,
+} from '@aries-framework/core'
+import { AttribRequest, NymRequest } from '@hyperledger/indy-vdr-shared'
+
+import { IndyVdrError } from '../error'
+import { IndyVdrPoolService } from '../pool/IndyVdrPoolService'
+
+import {
+  createKeyAgreementKey,
+  didDocDiff,
+  indyDidDocumentFromDid,
+  parseIndyDid,
+  isSelfCertifiedIndyDid,
+} from './didIndyUtil'
+import { endpointsAttribFromServices } from './didSovUtil'
+
+export class IndyVdrIndyDidRegistrar implements DidRegistrar {
+  public readonly supportedMethods = ['indy']
+
+  public async create(agentContext: AgentContext, options: IndyVdrDidCreateOptions): Promise<DidCreateResult> {
+    const seed = options.secret?.seed
+    if (seed && (typeof seed !== 'string' || seed.length !== 32)) {
+      return {
+        didDocumentMetadata: {},
+        didRegistrationMetadata: {},
+        didState: {
+          state: 'failed',
+          reason: 'Invalid seed provided',
+        },
+      }
+    }
+
+    const { alias, role, submitterDid, submitterVerkey, services, useEndpointAttrib } = options.options
+    let verkey = options.options.verkey
+    let did = options.did
+    let id
+
+    if (seed && did) {
+      return {
+        didDocumentMetadata: {},
+        didRegistrationMetadata: {},
+        didState: {
+          state: 'failed',
+          reason: `Only one of 'seed' and 'did' must be provided`,
+        },
+      }
+    }
+
+    try {
+      const { namespace, id: submitterId } = parseIndyDid(submitterDid)
+
+      if (did) {
+        id = parseIndyDid(did).id
+        if (!verkey) {
+          return {
+            didDocumentMetadata: {},
+            didRegistrationMetadata: {},
+            didState: {
+              state: 'failed',
+              reason: 'If a did is defined, a matching verkey must be provided',
+            },
+          }
+        }
+        if (!isSelfCertifiedIndyDid(did, verkey)) {
+          throw new Error(`Initial verkey ${verkey} does not match did ˇ${did}`)
+        }
+      } else {
+        // Create a new key and calculate did according to the rules for indy did method
+        const key = await agentContext.wallet.createKey({ seed, keyType: KeyType.Ed25519 })
+        const buffer = Hasher.hash(key.publicKey, 'sha2-256')
+
+        id = TypedArrayEncoder.toBase58(buffer.slice(0, 16))
+        verkey = key.publicKeyBase58
+        did = `did:indy:${namespace}:${id}`
+      }
+
+      // Create base did document
+      const didDocumentBuilder = indyDidDocumentFromDid(did, verkey)
+      let diddocContent
+
+      // Add services if object was passed
+      if (services) {
+        services.forEach((item) => didDocumentBuilder.addService(item))
+
+        const commTypes = [IndyAgentService.type, DidCommV1Service.type, DidCommV2Service.type]
+        const serviceTypes = new Set(services.map((item) => item.type))
+
+        const keyAgreementId = `${did}#key-agreement-1`
+
+        // If there is at least a communication service, add the key agreement key
+        if (commTypes.some((type) => serviceTypes.has(type))) {
+          didDocumentBuilder
+            .addVerificationMethod({
+              controller: did,
+              id: keyAgreementId,
+              publicKeyBase58: createKeyAgreementKey(verkey),
+              type: 'X25519KeyAgreementKey2019',
+            })
+            .addKeyAgreement(keyAgreementId)
+        }
+
+        // If there is a DIDComm V2 service, add context
+        if (serviceTypes.has(DidCommV2Service.type)) {
+          didDocumentBuilder.addContext('https://didcomm.org/messaging/contexts/v2')
+        }
+
+        if (!useEndpointAttrib) {
+          // create diddocContent parameter based on the diff between the base and the resulting DID Document
+          diddocContent = didDocDiff(
+            didDocumentBuilder.build().toJSON(),
+            indyDidDocumentFromDid(did, verkey).build().toJSON()
+          )
+        }
+      }
+
+      // Build did document
+      const didDocument = didDocumentBuilder.build()
+
+      const pool = agentContext.dependencyManager.resolve(IndyVdrPoolService).getPoolForNamespace(namespace)
+
+      // If there are services and we are using legacy indy endpoint attrib, make sure they are suitable before registering the DID
+      if (services && useEndpointAttrib) {
+        const endpoints = endpointsAttribFromServices(services)
+        await this.registerPublicDid(agentContext, pool, submitterId, submitterVerkey, id, verkey, alias, role)
+        await this.setEndpointsForDid(agentContext, pool, verkey, id, endpoints)
+      } else {
+        await this.registerPublicDid(
+          agentContext,
+          pool,
+          submitterId,
+          submitterVerkey,
+          id,
+          verkey,
+          alias,
+          role,
+          diddocContent
+        )
+      }
+
+      // Save the did so we know we created it and can issue with it
+      const didRecord = new DidRecord({
+        did,
+        role: DidDocumentRole.Created,
+        tags: {
+          recipientKeyFingerprints: didDocument.recipientKeys.map((key: Key) => key.fingerprint),
+          qualifiedIndyDid: did,
+        },
+      })
+
+      const didRepository = agentContext.dependencyManager.resolve(DidRepository)
+      await didRepository.save(agentContext, didRecord)
+
+      return {
+        didDocumentMetadata: {},
+        didRegistrationMetadata: {
+          didIndyNamespace: namespace,
+        },
+        didState: {
+          state: 'finished',
+          did,
+          didDocument,
+          secret: {
+            // FIXME: the uni-registrar creates the seed in the registrar method
+            // if it doesn't exist so the seed can always be returned. Currently
+            // we can only return it if the seed was passed in by the user. Once
+            // we have a secure method for generating seeds we should use the same
+            // approach
+            seed: options.secret?.seed,
+          },
+        },
+      }
+    } catch (error) {
+      return {
+        didDocumentMetadata: {},
+        didRegistrationMetadata: {},
+        didState: {
+          state: 'failed',
+          reason: `unknownError: ${error.message}`,
+        },
+      }
+    }
+  }
+
+  public async update(): Promise<DidUpdateResult> {
+    return {
+      didDocumentMetadata: {},
+      didRegistrationMetadata: {},
+      didState: {
+        state: 'failed',
+        reason: `notImplemented: updating did:indy not implemented yet`,
+      },
+    }
+  }
+
+  public async deactivate(): Promise<DidDeactivateResult> {
+    return {
+      didDocumentMetadata: {},
+      didRegistrationMetadata: {},
+      didState: {
+        state: 'failed',
+        reason: `notImplemented: deactivating did:indy not implemented yet`,
+      },
+    }
+  }
+
+  private async registerPublicDid(
+    agentContext: AgentContext,
+    pool: IndyVdrPool,
+    submitterDid: string,
+    submitterVerkey: string,
+    targetDid: string,
+    verkey: string,
+    alias?: string,
+    role?: string,
+    diddocContent?: Record<string, unknown>
+  ) {
+    try {
+      agentContext.config.logger.debug(`Register public did '${targetDid}' on ledger '${pool}'`)
+
+      // FIXME: Add diddocContent when supported by indy-vdr
+      if (diddocContent) {
+        throw new IndyVdrError('diddocContent is not yet supported')
+      }
+
+      const request = new NymRequest({ submitterDid, dest: targetDid, verkey, alias })
+
+      const signingKey = Key.fromPublicKeyBase58(submitterVerkey, KeyType.Ed25519)
+
+      const response = await pool.submitWriteRequest(agentContext, request, signingKey)
+
+      agentContext.config.logger.debug(`Registered public did '${targetDid}' on ledger '${pool.indyNamespace}'`, {
+        response,
+      })
+
+      return targetDid
+    } catch (error) {
+      agentContext.config.logger.error(
+        `Error registering public did '${targetDid}' on ledger '${pool.indyNamespace}'`,
+        {
+          error,
+          submitterDid,
+          targetDid,
+          verkey,
+          alias,
+          role,
+          pool: pool.indyNamespace,
+        }
+      )
+
+      throw error
+    }
+  }
+
+  private async setEndpointsForDid(
+    agentContext: AgentContext,
+    pool: IndyVdrPool,
+    submitterVerkey: string,
+    did: string,
+    endpoints: IndyEndpointAttrib
+  ): Promise<void> {
+    try {
+      agentContext.config.logger.debug(`Set endpoints for did '${did}' on ledger '${pool.indyNamespace}'`, endpoints)
+
+      const request = new AttribRequest({
+        submitterDid: did,
+        targetDid: did,
+        raw: JSON.stringify({ endpoint: endpoints }),
+      })
+
+      const signingKey = Key.fromPublicKeyBase58(submitterVerkey, KeyType.Ed25519)
+
+      const response = await pool.submitWriteRequest(agentContext, request, signingKey)
+      agentContext.config.logger.debug(
+        `Successfully set endpoints for did '${did}' on ledger '${pool.indyNamespace}'`,
+        {
+          response,
+          endpoints,
+        }
+      )
+    } catch (error) {
+      agentContext.config.logger.error(`Error setting endpoints for did '${did}' on ledger '${pool.indyNamespace}'`, {
+        error,
+        did,
+        endpoints,
+      })
+
+      throw new IndyVdrError(error)
+    }
+  }
+}
+
+export interface IndyVdrDidCreateOptions extends DidCreateOptions {
+  method: 'indy'
+  did?: string
+  didDocument?: never // Not yet supported
+  options: {
+    alias?: string
+    role?: string
+    services?: DidDocumentService[]
+    useEndpointAttrib?: boolean
+    submitterDid: string
+    submitterVerkey: string
+    verkey?: string
+  }
+  secret?: {
+    seed?: string
+  }
+}
+
+// TODO: Add Update and Deactivate
+export type IndyVdrIndyDidUpdateOptions = never
+export type IndyVdrIndyDidDeactivateOptions = never