feat(wallet)!: createKey from private key (#1301)

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

packages/askar/src/wallet/AskarWallet.ts

@@ -346,21 +346,30 @@ export class AskarWallet implements Wallet {
    * Create a key with an optional seed and keyType.
    * The keypair is also automatically stored in the wallet afterwards
    *
-   * @param seed string The seed for creating a key
+   * @param privateKey Buffer Optional privateKey for creating a key
+   * @param seed string Optional seed for creating a key
    * @param keyType KeyType the type of key that should be created
    *
    * @returns a Key instance with a publicKeyBase58
    *
    * @throws {WalletError} When an unsupported keytype is requested
    * @throws {WalletError} When the key could not be created
    */
-  public async createKey({ seed, keyType }: WalletCreateKeyOptions): Promise<Key> {
+  public async createKey({ seed, privateKey, keyType }: WalletCreateKeyOptions): Promise<Key> {
     try {
+      if (seed && privateKey) {
+        throw new AriesFrameworkError('Only one of seed and privateKey can be set')
+      }
+
       if (keyTypeSupportedByAskar(keyType)) {
         const algorithm = keyAlgFromString(keyType)
 
-        // Create key from seed
-        const key = seed ? AskarKey.fromSeed({ seed: Buffer.from(seed), algorithm }) : AskarKey.generate(algorithm)
+        // Create key
+        const key = privateKey
+          ? AskarKey.fromSecretBytes({ secretKey: privateKey, algorithm })
+          : seed
+          ? AskarKey.fromSeed({ seed, algorithm })
+          : AskarKey.generate(algorithm)
 
         // Store key
         await this.session.insertKey({ key, name: TypedArrayEncoder.toBase58(key.publicBytes) })
@@ -370,7 +379,7 @@ export class AskarWallet implements Wallet {
         if (this.signingKeyProviderRegistry.hasProviderForKeyType(keyType)) {
           const signingKeyProvider = this.signingKeyProviderRegistry.getProviderForKeyType(keyType)
 
-          const keyPair = await signingKeyProvider.createKeyPair({ seed })
+          const keyPair = await signingKeyProvider.createKeyPair({ seed, privateKey })
           await this.storeKeyPair(keyPair)
           return Key.fromPublicKeyBase58(keyPair.publicKeyBase58, keyType)
         }
@@ -398,7 +407,6 @@ export class AskarWallet implements Wallet {
         if (!TypedArrayEncoder.isTypedArray(data)) {
           throw new WalletError(`Currently not supporting signing of multiple messages`)
         }
-
         const keyEntry = await this.session.fetchKey({ name: key.publicKeyBase58 })
 
         if (!keyEntry) {

packages/askar/src/wallet/__tests__/AskarWallet.test.ts

@@ -36,7 +36,8 @@ const walletConfig: WalletConfig = {
 describe('AskarWallet basic operations', () => {
   let askarWallet: AskarWallet
 
-  const seed = 'sample-seed'
+  const seed = TypedArrayEncoder.fromString('sample-seed')
+  const privateKey = TypedArrayEncoder.fromString('2103de41b4ae37e8e28586d84a342b67')
   const message = TypedArrayEncoder.fromString('sample-message')
 
   beforeEach(async () => {
@@ -62,12 +63,36 @@ describe('AskarWallet basic operations', () => {
     expect(nonce).toMatch(/[0-9]+/)
   })
 
-  test('Create ed25519 keypair', async () => {
-    await expect(
-      askarWallet.createKey({ seed: '2103de41b4ae37e8e28586d84a342b67', keyType: KeyType.Ed25519 })
-    ).resolves.toMatchObject({
+  test('Create ed25519 keypair from seed', async () => {
+    const key = await askarWallet.createKey({
+      seed,
+      keyType: KeyType.Ed25519,
+    })
+
+    expect(key).toMatchObject({
+      keyType: KeyType.Ed25519,
+    })
+  })
+
+  test('Create ed25519 keypair from private key', async () => {
+    const key = await askarWallet.createKey({
+      privateKey,
       keyType: KeyType.Ed25519,
     })
+
+    expect(key).toMatchObject({
+      keyType: KeyType.Ed25519,
+    })
+  })
+
+  test('Attempt to create ed25519 keypair from both seed and private key', async () => {
+    await expect(
+      askarWallet.createKey({
+        privateKey,
+        seed,
+        keyType: KeyType.Ed25519,
+      })
+    ).rejects.toThrowError()
   })
 
   test('Create x25519 keypair', async () => {
@@ -109,15 +134,15 @@ describe.skip('Currently, all KeyTypes are supported by Askar natively', () => {
   describe('AskarWallet with custom signing provider', () => {
     let askarWallet: AskarWallet
 
-    const seed = 'sample-seed'
+    const seed = TypedArrayEncoder.fromString('sample-seed')
     const message = TypedArrayEncoder.fromString('sample-message')
 
     class DummySigningProvider implements SigningProvider {
       public keyType: KeyType = KeyType.Bls12381g1g2
 
       public async createKeyPair(options: CreateKeyPairOptions): Promise<KeyPair> {
         return {
-          publicKeyBase58: encodeToBase58(Buffer.from(options.seed || 'publicKeyBase58')),
+          publicKeyBase58: encodeToBase58(Buffer.from(options.seed || TypedArrayEncoder.fromString('publicKeyBase58'))),
           privateKeyBase58: 'privateKeyBase58',
           keyType: KeyType.Bls12381g1g2,
         }
@@ -175,11 +200,11 @@ describe.skip('Currently, all KeyTypes are supported by Askar natively', () => {
     })
 
     test('Attempt to create the same custom keypair twice', async () => {
-      await askarWallet.createKey({ seed: 'keybase58', keyType: KeyType.Bls12381g1g2 })
+      await askarWallet.createKey({ seed: TypedArrayEncoder.fromString('keybase58'), keyType: KeyType.Bls12381g1g2 })
 
-      await expect(askarWallet.createKey({ seed: 'keybase58', keyType: KeyType.Bls12381g1g2 })).rejects.toThrow(
-        WalletError
-      )
+      await expect(
+        askarWallet.createKey({ seed: TypedArrayEncoder.fromString('keybase58'), keyType: KeyType.Bls12381g1g2 })
+      ).rejects.toThrow(WalletError)
     })
   })
 })

packages/bbs-signatures/src/Bls12381g2SigningProvider.ts

@@ -15,11 +15,12 @@ export class Bls12381g2SigningProvider implements SigningProvider {
    *
    * @throws {SigningProviderError} When a key could not be created
    */
-  public async createKeyPair({ seed }: CreateKeyPairOptions): Promise<KeyPair> {
-    // Generate bytes from the seed as required by the bbs-signatures libraries
-    const seedBytes = seed ? TypedArrayEncoder.fromString(seed) : undefined
+  public async createKeyPair({ seed, privateKey }: CreateKeyPairOptions): Promise<KeyPair> {
+    if (privateKey) {
+      throw new SigningProviderError('Cannot create keypair from private key')
+    }
 
-    const blsKeyPair = await generateBls12381G2KeyPair(seedBytes)
+    const blsKeyPair = await generateBls12381G2KeyPair(seed)
 
     return {
       keyType: KeyType.Bls12381g2,

packages/bbs-signatures/tests/bbs-signatures.e2e.test.ts

@@ -19,6 +19,7 @@ import {
   W3cVerifiablePresentation,
   IndyWallet,
   Ed25519Signature2018,
+  TypedArrayEncoder,
 } from '@aries-framework/core'
 
 import { SignatureSuiteRegistry } from '../../core/src/modules/vc/SignatureSuiteRegistry'
@@ -62,7 +63,8 @@ describeSkipNode17And18('BBS W3cCredentialService', () => {
   let wallet: IndyWallet
   let agentContext: AgentContext
   let w3cCredentialService: W3cCredentialService
-  const seed = 'testseed000000000000000000000001'
+  const seed = TypedArrayEncoder.fromString('testseed000000000000000000000001')
+  const privateKey = TypedArrayEncoder.fromString('testseed000000000000000000000001')
 
   beforeAll(async () => {
     wallet = new IndyWallet(agentConfig.agentDependencies, agentConfig.logger, signingProviderRegistry)
@@ -219,7 +221,10 @@ describeSkipNode17And18('BBS W3cCredentialService', () => {
 
     describe('signPresentation', () => {
       it('should sign the presentation successfully', async () => {
-        const signingKey = await wallet.createKey({ seed, keyType: KeyType.Ed25519 })
+        const signingKey = await wallet.createKey({
+          privateKey,
+          keyType: KeyType.Ed25519,
+        })
         const signingDidKey = new DidKey(signingKey)
         const verificationMethod = `${signingDidKey.did}#${signingDidKey.key.fingerprint}`
         const presentation = JsonTransformer.fromJSON(BbsBlsSignature2020Fixtures.TEST_VP_DOCUMENT, W3cPresentation)

packages/bbs-signatures/tests/bbs-signing-provider.e2e.test.ts

@@ -26,7 +26,7 @@ const walletConfig: WalletConfig = {
 
 describeSkipNode17And18('BBS Signing Provider', () => {
   let indyWallet: IndyWallet
-  const seed = 'sample-seed'
+  const seed = TypedArrayEncoder.fromString('sample-seed')
   const message = TypedArrayEncoder.fromString('sample-message')
 
   beforeEach(async () => {

packages/bbs-signatures/tests/v2.ldproof.credentials.propose-offerBbs.test.ts

@@ -3,6 +3,8 @@ import type { JsonCredential, JsonLdCredentialDetailFormat } from '../../core/sr
 import type { Wallet } from '../../core/src/wallet'
 import type { CredentialTestsAgent } from '../../core/tests/helpers'
 
+import { TypedArrayEncoder } from '@aries-framework/core'
+
 import { InjectionSymbols } from '../../core/src/constants'
 import { KeyType } from '../../core/src/crypto'
 import { CredentialState } from '../../core/src/modules/credentials/models'
@@ -29,14 +31,14 @@ describeSkipNode17And18('credentials, BBS+ signature', () => {
   let issuerDidKey: DidKey
   let didCommMessageRepository: DidCommMessageRepository
   let signCredentialOptions: JsonLdCredentialDetailFormat
-  const seed = 'testseed000000000000000000000001'
+  const seed = TypedArrayEncoder.fromString('testseed000000000000000000000001')
   beforeAll(async () => {
     ;({ faberAgent, aliceAgent, aliceConnection } = await setupCredentialTests(
       'Faber Agent Credentials LD BBS+',
       'Alice Agent Credentials LD BBS+'
     ))
     wallet = faberAgent.dependencyManager.resolve<Wallet>(InjectionSymbols.Wallet)
-    await wallet.createKey({ keyType: KeyType.Ed25519, seed })
+    await wallet.createKey({ keyType: KeyType.Ed25519, privateKey: seed })
     const key = await wallet.createKey({ keyType: KeyType.Bls12381g2, seed })
 
     issuerDidKey = new DidKey(key)

packages/core/src/crypto/__tests__/JwsService.test.ts

@@ -3,7 +3,7 @@ import type { Key, Wallet } from '@aries-framework/core'
 
 import { getAgentConfig, getAgentContext } from '../../../tests/helpers'
 import { DidKey } from '../../modules/dids'
-import { Buffer, JsonEncoder } from '../../utils'
+import { Buffer, JsonEncoder, TypedArrayEncoder } from '../../utils'
 import { IndyWallet } from '../../wallet/IndyWallet'
 import { JwsService } from '../JwsService'
 import { KeyType } from '../KeyType'
@@ -28,8 +28,14 @@ describe('JwsService', () => {
     await wallet.createAndOpen(config.walletConfig!)
 
     jwsService = new JwsService()
-    didJwsz6MkfKey = await wallet.createKey({ seed: didJwsz6Mkf.SEED, keyType: KeyType.Ed25519 })
-    didJwsz6MkvKey = await wallet.createKey({ seed: didJwsz6Mkv.SEED, keyType: KeyType.Ed25519 })
+    didJwsz6MkfKey = await wallet.createKey({
+      privateKey: TypedArrayEncoder.fromString(didJwsz6Mkf.SEED),
+      keyType: KeyType.Ed25519,
+    })
+    didJwsz6MkvKey = await wallet.createKey({
+      privateKey: TypedArrayEncoder.fromString(didJwsz6Mkv.SEED),
+      keyType: KeyType.Ed25519,
+    })
   })
 
   afterAll(async () => {

packages/core/src/crypto/signing-provider/SigningProvider.ts

@@ -20,7 +20,8 @@ export interface VerifyOptions {
 }
 
 export interface CreateKeyPairOptions {
-  seed?: string
+  seed?: Buffer
+  privateKey?: Buffer
 }
 
 export interface SigningProvider {

packages/core/src/decorators/signature/SignatureDecoratorUtils.test.ts

@@ -1,6 +1,7 @@
 import { getAgentConfig } from '../../../tests/helpers'
 import { KeyType } from '../../crypto'
 import { SigningProviderRegistry } from '../../crypto/signing-provider'
+import { TypedArrayEncoder } from '../../utils'
 import { IndyWallet } from '../../wallet/IndyWallet'
 
 import { SignatureDecorator } from './SignatureDecorator'
@@ -53,8 +54,8 @@ describe('Decorators | Signature | SignatureDecoratorUtils', () => {
   })
 
   test('signData signs json object and returns SignatureDecorator', async () => {
-    const seed1 = '00000000000000000000000000000My1'
-    const key = await wallet.createKey({ seed: seed1, keyType: KeyType.Ed25519 })
+    const privateKey = TypedArrayEncoder.fromString('00000000000000000000000000000My1')
+    const key = await wallet.createKey({ privateKey, keyType: KeyType.Ed25519 })
 
     const result = await signData(data, wallet, key.publicKeyBase58)
 

packages/core/src/modules/credentials/protocol/v2/__tests__/v2.ldproof.connectionless-credentials.test.ts

@@ -13,6 +13,7 @@ import testLogger from '../../../../../../tests/logger'
 import { Agent } from '../../../../../agent/Agent'
 import { InjectionSymbols } from '../../../../../constants'
 import { KeyType } from '../../../../../crypto'
+import { TypedArrayEncoder } from '../../../../../utils'
 import { JsonEncoder } from '../../../../../utils/JsonEncoder'
 import { W3cVcModule } from '../../../../vc'
 import { customDocumentLoader } from '../../../../vc/__tests__/documentLoader'
@@ -62,7 +63,7 @@ describe('credentials', () => {
   let aliceAgent: Agent<(typeof aliceAgentOptions)['modules']>
   let faberReplay: ReplaySubject<CredentialStateChangedEvent>
   let aliceReplay: ReplaySubject<CredentialStateChangedEvent>
-  const seed = 'testseed000000000000000000000001'
+  const privateKey = TypedArrayEncoder.fromString('testseed000000000000000000000001')
   const TEST_LD_DOCUMENT: JsonCredential = {
     '@context': [CREDENTIALS_CONTEXT_V1_URL, 'https://www.w3.org/2018/credentials/examples/v1'],
     type: ['VerifiableCredential', 'UniversityDegreeCredential'],
@@ -106,7 +107,7 @@ describe('credentials', () => {
       .subscribe(aliceReplay)
     wallet = faberAgent.dependencyManager.resolve<Wallet>(InjectionSymbols.Wallet)
 
-    await wallet.createKey({ seed, keyType: KeyType.Ed25519 })
+    await wallet.createKey({ privateKey, keyType: KeyType.Ed25519 })
 
     signCredentialOptions = {
       credential: TEST_LD_DOCUMENT,

packages/core/src/modules/credentials/protocol/v2/__tests__/v2.ldproof.credentials-auto-accept.test.ts

@@ -8,6 +8,7 @@ import testLogger from '../../../../../../tests/logger'
 import { InjectionSymbols } from '../../../../../constants'
 import { KeyType } from '../../../../../crypto'
 import { AriesFrameworkError } from '../../../../../error/AriesFrameworkError'
+import { TypedArrayEncoder } from '../../../../../utils'
 import { CREDENTIALS_CONTEXT_V1_URL } from '../../../../vc/constants'
 import { AutoAcceptCredential, CredentialState } from '../../../models'
 import { CredentialExchangeRecord } from '../../../repository/CredentialExchangeRecord'
@@ -33,7 +34,7 @@ describe('credentials', () => {
   let aliceCredentialRecord: CredentialExchangeRecord
   let signCredentialOptions: JsonLdCredentialDetailFormat
   let wallet
-  const seed = 'testseed000000000000000000000001'
+  const privateKey = TypedArrayEncoder.fromString('testseed000000000000000000000001')
 
   describe('Auto accept on `always`', () => {
     beforeAll(async () => {
@@ -44,7 +45,7 @@ describe('credentials', () => {
       ))
 
       wallet = faberAgent.dependencyManager.resolve<Wallet>(InjectionSymbols.Wallet)
-      await wallet.createKey({ seed, keyType: KeyType.Ed25519 })
+      await wallet.createKey({ privateKey, keyType: KeyType.Ed25519 })
       signCredentialOptions = {
         credential: TEST_LD_DOCUMENT,
         options: {
@@ -143,7 +144,7 @@ describe('credentials', () => {
         AutoAcceptCredential.ContentApproved
       ))
       wallet = faberAgent.dependencyManager.resolve<Wallet>(InjectionSymbols.Wallet)
-      await wallet.createKey({ seed, keyType: KeyType.Ed25519 })
+      await wallet.createKey({ privateKey, keyType: KeyType.Ed25519 })
       signCredentialOptions = {
         credential: TEST_LD_DOCUMENT,
         options: {

packages/core/src/modules/credentials/protocol/v2/__tests__/v2.ldproof.credentials.propose-offerED25519.test.ts

@@ -8,6 +8,7 @@ import testLogger from '../../../../../../tests/logger'
 import { InjectionSymbols } from '../../../../../constants'
 import { KeyType } from '../../../../../crypto'
 import { DidCommMessageRepository } from '../../../../../storage'
+import { TypedArrayEncoder } from '../../../../../utils'
 import { JsonTransformer } from '../../../../../utils/JsonTransformer'
 import { CredentialState } from '../../../models'
 import { CredentialExchangeRecord } from '../../../repository/CredentialExchangeRecord'
@@ -57,7 +58,7 @@ describe('credentials', () => {
   let signCredentialOptions: JsonLdCredentialDetailFormat
 
   let wallet
-  const seed = 'testseed000000000000000000000001'
+  const privateKey = TypedArrayEncoder.fromString('testseed000000000000000000000001')
   let credDefId: string
 
   beforeAll(async () => {
@@ -66,7 +67,7 @@ describe('credentials', () => {
       'Alice Agent Credentials LD'
     ))
     wallet = faberAgent.dependencyManager.resolve<Wallet>(InjectionSymbols.Wallet)
-    await wallet.createKey({ seed, keyType: KeyType.Ed25519 })
+    await wallet.createKey({ privateKey, keyType: KeyType.Ed25519 })
     signCredentialOptions = {
       credential: inputDocAsJson,
       options: {