test local verification

src/dkg.ts

@@ -89,21 +89,6 @@ export class DkgRitual {
   }
 }
 
-// TODO: Without Validator public key in Coordinator, we cannot verify the
-//    transcript. We need to add it to the Coordinator (nucypher-contracts #77).
-const participantPublicKeys: Record<string, FerveoPublicKey> = {
-  '0x210eeAC07542F815ebB6FD6689637D8cA2689392': FerveoPublicKey.fromBytes(
-    fromHexString(
-      '6000000000000000ace9d7567b26dafc512b2303cfdaa872850c62b100078ddeaabf8408c7308b3a43dfeb88375c21ef63230fb4008ce7e908764463c6765e556f9b03009eb1757d179eaa26bf875332807cc070d62a385ed2e66e09f4f4766451da12779a09036e'
-    )
-  ),
-  '0xb15d5A4e2be34f4bE154A1b08a94Ab920FfD8A41': FerveoPublicKey.fromBytes(
-    fromHexString(
-      '60000000000000008b373fdb6b43e9dca028bd603c2bf90f0e008ec83ff217a8d7bc006b585570e6ab1ce761bad0e21c1aed1363286145f61134ed0ab53f4ebaa05036396c57f6e587f33d49667c1003cd03b71ad651b09dd4791bc631eaef93f1b313bbee7bd63a'
-    )
-  ),
-};
-
 export class DkgClient {
   // TODO: Update API: Replace with getExistingRitual and support ritualId in Strategy
   public static async initializeRitual(
@@ -149,12 +134,35 @@ export class DkgClient {
       const validatorAddress = EthereumAddress.fromString(p.provider);
       // TODO: Replace with real keys
       // const publicKey = FerveoPublicKey.fromBytes(fromHexString(p.???));
-      const publicKey = participantPublicKeys[p.provider];
+      const publicKey = DkgClient.getParticipantPublicKey(p.provider);
       const validator = new Validator(validatorAddress, publicKey);
       return new ValidatorMessage(validator, p.transcript);
     });
     const aggregate = new AggregatedTranscript(validatorMessages);
 
     return aggregate.verify(ritual.dkgSize, validatorMessages);
   }
+
+  public static getParticipantPublicKey = (address: string) => {
+    // TODO: Without Validator public key in Coordinator, we cannot verify the
+    //    transcript. We need to add it to the Coordinator (nucypher-contracts #77).
+    const participantPublicKeys: Record<string, FerveoPublicKey> = {
+      '0x210eeAC07542F815ebB6FD6689637D8cA2689392': FerveoPublicKey.fromBytes(
+        fromHexString(
+          '6000000000000000ace9d7567b26dafc512b2303cfdaa872850c62b100078ddeaabf8408c7308b3a43dfeb88375c21ef63230fb4008ce7e908764463c6765e556f9b03009eb1757d179eaa26bf875332807cc070d62a385ed2e66e09f4f4766451da12779a09036e'
+        )
+      ),
+      '0xb15d5A4e2be34f4bE154A1b08a94Ab920FfD8A41': FerveoPublicKey.fromBytes(
+        fromHexString(
+          '60000000000000008b373fdb6b43e9dca028bd603c2bf90f0e008ec83ff217a8d7bc006b585570e6ab1ce761bad0e21c1aed1363286145f61134ed0ab53f4ebaa05036396c57f6e587f33d49667c1003cd03b71ad651b09dd4791bc631eaef93f1b313bbee7bd63a'
+        )
+      ),
+    };
+
+    const publicKey = participantPublicKeys[address];
+    if (!publicKey) {
+      throw new Error(`No public key for participant: ${address}`);
+    }
+    return publicKey;
+  };
 }

test/integration/dkg-client.test.ts

@@ -1,18 +1,22 @@
 import { SecretKey } from '@nucypher/nucypher-core';
 
 import { DkgCoordinatorAgent } from '../../src/agents/coordinator';
+import { DkgClient } from '../../src/dkg';
 import {
   fakeCoordinatorRitual,
   fakeDkgParticipants,
   fakeRitualId,
   fakeWeb3Provider,
+  mockGetParticipantPublicKey,
   mockGetParticipants,
+  mockVerifyRitual,
 } from '../utils';
 
 jest.mock('../../src/agents/coordinator', () => ({
   DkgCoordinatorAgent: {
     getRitual: () => Promise.resolve(fakeCoordinatorRitual(fakeRitualId)),
-    getParticipants: () => Promise.resolve(fakeDkgParticipants(fakeRitualId)),
+    getParticipants: () =>
+      Promise.resolve(fakeDkgParticipants(fakeRitualId).participants),
   },
 }));
 
@@ -42,13 +46,39 @@ describe('DkgCoordinatorAgent', () => {
   });
 });
 
-// TODO: Fix this test after the DkgClient.verifyRitual() method is implemented
-// describe('DkgClient', () => {
-//   it('verifies the dkg ritual', async () => {
-//     const provider = fakeWeb3Provider(SecretKey.random().toBEBytes());
-//
-//     const dkgClient = new DkgClient(provider);
-//     const isValid = await dkgClient.verifyRitual(fakeRitualId);
-//     expect(isValid).toBeTruthy();
-//   });
-// });
+describe('DkgClient', () => {
+  afterEach(() => {
+    jest.restoreAllMocks();
+  });
+
+  it('verifies the dkg ritual', async () => {
+    const provider = fakeWeb3Provider(SecretKey.random().toBEBytes());
+    const verifyRitualSpy = mockVerifyRitual();
+
+    const isValid = await DkgClient.verifyRitual(provider, fakeRitualId);
+    expect(isValid).toBeTruthy();
+    expect(verifyRitualSpy).toHaveBeenCalled();
+  });
+
+  it('rejects on missing participant pk', async () => {
+    const provider = fakeWeb3Provider(SecretKey.random().toBEBytes());
+
+    await expect(async () =>
+      DkgClient.verifyRitual(provider, fakeRitualId)
+    ).rejects.toThrow(
+      'No public key for participant: 0x0000000000000000000000000000000000000000'
+    );
+  });
+
+  it('rejects on bad participant pk', async () => {
+    const provider = fakeWeb3Provider(SecretKey.random().toBEBytes());
+    const getParticipantPublicKeysSpy = mockGetParticipantPublicKey();
+
+    await expect(async () =>
+      DkgClient.verifyRitual(provider, fakeRitualId)
+    ).rejects.toThrow(
+      "Transcript aggregate doesn't match the received PVSS instances"
+    );
+    expect(getParticipantPublicKeysSpy).toHaveBeenCalled();
+  });
+});

test/utils.ts

@@ -8,6 +8,7 @@ import {
   EncryptedThresholdDecryptionResponse,
   EncryptedTreasureMap,
   ferveoEncrypt,
+  FerveoPublicKey,
   PublicKey,
   reencrypt,
   SecretKey,
@@ -540,3 +541,14 @@ export const mockVerifyRitual = (isValid = true) => {
     (_provider, _ritualId) => Promise.resolve(isValid)
   );
 };
+
+export const mockGetParticipantPublicKey = (pk = fakeFerveoPublicKey()) => {
+  return jest.spyOn(DkgClient, 'getParticipantPublicKey').mockImplementation(
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    (_address) => pk
+  );
+};
+
+export const fakeFerveoPublicKey = (): FerveoPublicKey => {
+  return Keypair.random().publicKey;
+};