fix: verify issuer id matches (#5)

Signed-off-by: Timo Glastra <timo@animo.id>

src/anoncreds/DidWebAnonCredsRegistry.ts

@@ -59,7 +59,7 @@ export class DidWebAnonCredsRegistry implements AnonCredsRegistry {
       }
     }
     try {
-      const { response, resourceId } = await this.parseIdAndFetchResource(agentContext, schemaId)
+      const { response, resourceId, did } = await this.parseIdAndFetchResource(agentContext, schemaId)
 
       if (response.status === 200) {
         const result = (await response.json()) as AnonCredsResourceResolutionResult
@@ -69,6 +69,10 @@ export class DidWebAnonCredsRegistry implements AnonCredsRegistry {
           throw new Error('Wrong resource Id')
         }
 
+        if (did !== schema.issuerId) {
+          throw new Error(`issuerId in schema (${schema.issuerId}) does not match the did (${did})`)
+        }
+
         if (this.cacheSettings.allowCaching) {
           const cache = agentContext.dependencyManager.resolve(CacheModuleConfig).cache
           await cache.set(
@@ -147,7 +151,7 @@ export class DidWebAnonCredsRegistry implements AnonCredsRegistry {
     }
 
     try {
-      const { response, resourceId } = await this.parseIdAndFetchResource(agentContext, credentialDefinitionId)
+      const { response, resourceId, did } = await this.parseIdAndFetchResource(agentContext, credentialDefinitionId)
       if (response.status === 200) {
         const result = (await response.json()) as AnonCredsResourceResolutionResult
         const credentialDefinition = result.resource as unknown as AnonCredsCredentialDefinition
@@ -157,6 +161,12 @@ export class DidWebAnonCredsRegistry implements AnonCredsRegistry {
           throw new Error('Wrong resource Id')
         }
 
+        if (did !== credentialDefinition.issuerId) {
+          throw new Error(
+            `issuerId in credential definition (${credentialDefinition.issuerId}) does not match the did (${did})`
+          )
+        }
+
         if (this.cacheSettings.allowCaching) {
           const cache = agentContext.dependencyManager.resolve(CacheModuleConfig).cache
           await cache.set(
@@ -242,7 +252,10 @@ export class DidWebAnonCredsRegistry implements AnonCredsRegistry {
     }
 
     try {
-      const { response, resourceId } = await this.parseIdAndFetchResource(agentContext, revocationRegistryDefinitionId)
+      const { response, resourceId, did } = await this.parseIdAndFetchResource(
+        agentContext,
+        revocationRegistryDefinitionId
+      )
       if (response.status === 200) {
         const result = (await response.json()) as AnonCredsResourceResolutionResult
         const revocationRegistryDefinition = result.resource as unknown as AnonCredsRevocationRegistryDefinition
@@ -252,6 +265,12 @@ export class DidWebAnonCredsRegistry implements AnonCredsRegistry {
           throw new Error('Wrong resource Id')
         }
 
+        if (did !== revocationRegistryDefinition.issuerId) {
+          throw new Error(
+            `issuerId in revocation registry definition (${revocationRegistryDefinition.issuerId}) does not match the did (${did})`
+          )
+        }
+
         if (this.cacheSettings.allowCaching) {
           const cache = agentContext.dependencyManager.resolve(CacheModuleConfig).cache
           await cache.set(
@@ -320,6 +339,11 @@ export class DidWebAnonCredsRegistry implements AnonCredsRegistry {
     try {
       // TODO: use cache to get Revocation Registry Definition data without fetching it again
       const revRegDefResult = await this.getRevocationRegistryDefinition(agentContext, revocationRegistryId)
+      if (!revRegDefResult.revocationRegistryDefinition) {
+        throw new Error(
+          `Error resolving revocation registry definition with id ${revocationRegistryId}. ${revRegDefResult.resolutionMetadata.error} ${revRegDefResult.resolutionMetadata.message}`
+        )
+      }
 
       const baseEndpoint = revRegDefResult.revocationRegistryDefinitionMetadata.statusListEndpoint
 
@@ -336,6 +360,12 @@ export class DidWebAnonCredsRegistry implements AnonCredsRegistry {
         const revocationStatusList = result.resource as unknown as AnonCredsRevocationStatusList
         const revocationStatusListMetadata = result.resourceMetadata
 
+        if (revocationStatusList.issuerId !== revRegDefResult.revocationRegistryDefinition.issuerId) {
+          throw new Error(
+            `issuerId in revocation status list (${revocationStatusList.issuerId}) does not match the issuer in the revocation registry definition (${revRegDefResult.revocationRegistryDefinition.issuerId})`
+          )
+        }
+
         return {
           revocationStatusList,
           revocationStatusListMetadata,
@@ -427,6 +457,7 @@ export class DidWebAnonCredsRegistry implements AnonCredsRegistry {
     return {
       response: await agentContext.config.agentDependencies.fetch(fetchResourceUrl, { method: 'GET' }),
       resourceId,
+      did: parsedDid.did,
     }
   }
 }

test/__fixtures__/schema1.json

@@ -1,5 +1,5 @@
 {
-  "issuerId": "did:web:api.anoncreds.idlab.app:acme",
+  "issuerId": "did:web:ca.dev.2060.io",
   "name": "idlab_demo",
   "version": "0.0.1",
   "attrNames": ["id", "name"]

test/credentialDefinition.test.ts

@@ -29,12 +29,12 @@ describe('Credential Definition', () => {
 
     const registry = new DidWebAnonCredsRegistry()
 
-    const schemaResponse = await registry.getCredentialDefinition(
+    const credentialDefinitionResponse = await registry.getCredentialDefinition(
       agent.context,
       `did:web:ca.dev.2060.io?service=anoncreds&relativeRef=/credential-definition/${resourceId}`
     )
 
-    expect(schemaResponse).toEqual({
+    expect(credentialDefinitionResponse).toEqual({
       resolutionMetadata: {},
       credentialDefinition: credentialDefinition1,
       credentialDefinitionId: `did:web:ca.dev.2060.io?service=anoncreds&relativeRef=/credential-definition/${resourceId}`,
@@ -68,4 +68,37 @@ describe('Credential Definition', () => {
       credentialDefinitionMetadata: {},
     })
   })
+
+  test('throws error when issuerId does not match with did', async () => {
+    const credentialDefinition = {
+      ...credentialDefinition1,
+      issuerId: 'random',
+    }
+    const resourceId = calculateResourceId(credentialDefinition)
+
+    // did document
+    nock('https://ca.dev.2060.io').get('/.well-known/did.json').reply(200, didDocument1)
+
+    // Get schema
+    nock('https://anoncreds.ca.dev.2060.io').get(`/v1/credential-definition/${resourceId}`).reply(200, {
+      resource: credentialDefinition,
+      resourceMetadata: {},
+    })
+
+    const registry = new DidWebAnonCredsRegistry()
+
+    const credentialDefinitionResponse = await registry.getCredentialDefinition(
+      agent.context,
+      `did:web:ca.dev.2060.io?service=anoncreds&relativeRef=/credential-definition/${resourceId}`
+    )
+
+    expect(credentialDefinitionResponse).toEqual({
+      resolutionMetadata: {
+        error: 'invalid',
+        message: 'issuerId in credential definition (random) does not match the did (did:web:ca.dev.2060.io)',
+      },
+      credentialDefinitionId: `did:web:ca.dev.2060.io?service=anoncreds&relativeRef=/credential-definition/${resourceId}`,
+      credentialDefinitionMetadata: {},
+    })
+  })
 })

test/revocationRegistryDefinition.test.ts

@@ -74,4 +74,37 @@ describe('Revocation Registry Definition', () => {
       revocationRegistryDefinitionMetadata: {},
     })
   })
+
+  test('throws error when revocation registry definition resourceId does not match', async () => {
+    const revocationRegistryDefinition = {
+      ...revocationRegistryDefinition1,
+      issuerId: 'random2',
+    }
+
+    const resourceId = calculateResourceId(revocationRegistryDefinition)
+    // did document
+    nock('https://ca.dev.2060.io').get('/.well-known/did.json').reply(200, didDocument1)
+
+    // Get schema
+    nock('https://anoncreds.ca.dev.2060.io').get(`/v1/revocation-registry/${resourceId}`).reply(200, {
+      resource: revocationRegistryDefinition,
+      resourceMetadata: {},
+    })
+
+    const registry = new DidWebAnonCredsRegistry()
+
+    const revocationRegistryDefinitionResponse = await registry.getRevocationRegistryDefinition(
+      agent.context,
+      `did:web:ca.dev.2060.io?service=anoncreds&relativeRef=/revocation-registry/${resourceId}`
+    )
+
+    expect(revocationRegistryDefinitionResponse).toEqual({
+      resolutionMetadata: {
+        error: 'invalid',
+        message: 'issuerId in revocation registry definition (random2) does not match the did (did:web:ca.dev.2060.io)',
+      },
+      revocationRegistryDefinitionId: `did:web:ca.dev.2060.io?service=anoncreds&relativeRef=/revocation-registry/${resourceId}`,
+      revocationRegistryDefinitionMetadata: {},
+    })
+  })
 })

test/schema.test.ts

@@ -71,7 +71,40 @@ describe('Schema', () => {
     })
   })
 
-  test('register and resole did document with nested path', async () => {
+  test('throws error when issuerId does not match with did', async () => {
+    const schema = {
+      ...schema1,
+      issuerId: 'random',
+    }
+    const resourceId = calculateResourceId(schema)
+
+    // did document
+    nock('https://ca.dev.2060.io').get('/.well-known/did.json').reply(200, didDocument1)
+
+    // Get schema
+    nock('https://anoncreds.ca.dev.2060.io').get(`/v1/schema/${resourceId}`).reply(200, {
+      resource: schema,
+      resourceMetadata: {},
+    })
+
+    const registry = new DidWebAnonCredsRegistry()
+
+    const schemaResponse = await registry.getSchema(
+      agent.context,
+      `did:web:ca.dev.2060.io?service=anoncreds&relativeRef=/schema/${resourceId}`
+    )
+
+    expect(schemaResponse).toEqual({
+      resolutionMetadata: {
+        error: 'invalid',
+        message: 'issuerId in schema (random) does not match the did (did:web:ca.dev.2060.io)',
+      },
+      schemaId: `did:web:ca.dev.2060.io?service=anoncreds&relativeRef=/schema/${resourceId}`,
+      schemaMetadata: {},
+    })
+  })
+
+  test('register and resolve did document with nested path', async () => {
     const registry = new DidWebAnonCredsRegistry()
 
     const result = await registry.registerSchema(agent.context, {