feat: add eddsa MPCv2 SMC utils

modules/abstract-lightning/package.json

@@ -39,7 +39,7 @@
     ]
   },
   "dependencies": {
-    "@bitgo/public-types": "6.17.0",
+    "@bitgo/public-types": "6.21.0",
     "@bitgo/sdk-core": "^37.3.0",
     "@bitgo/statics": "^58.43.0",
     "@bitgo/utxo-lib": "^11.22.1",

modules/bitgo/package.json

@@ -140,7 +140,7 @@
     "superagent": "^9.0.1"
   },
   "devDependencies": {
-    "@bitgo/public-types": "6.17.0",
+    "@bitgo/public-types": "6.21.0",
     "@bitgo/sdk-opensslbytes": "^2.1.0",
     "@bitgo/sdk-test": "^9.1.46",
     "@openpgp/web-stream-tools": "0.0.14",

modules/express/package.json

@@ -60,7 +60,7 @@
     "superagent": "^9.0.1"
   },
   "devDependencies": {
-    "@bitgo/public-types": "6.17.0",
+    "@bitgo/public-types": "6.21.0",
     "@bitgo/sdk-lib-mpc": "^10.14.0",
     "@bitgo/sdk-test": "^9.1.46",
     "@types/argparse": "^1.0.36",

modules/sdk-coin-flrp/package.json

@@ -47,7 +47,7 @@
     "@bitgo/sdk-test": "^9.1.46"
   },
   "dependencies": {
-    "@bitgo/public-types": "6.17.0",
+    "@bitgo/public-types": "6.21.0",
     "@bitgo/sdk-core": "^37.3.0",
     "@bitgo/secp256k1": "^1.11.0",
     "@bitgo/statics": "^58.43.0",

modules/sdk-coin-sol/package.json

@@ -57,7 +57,7 @@
   },
   "dependencies": {
     "@bitgo/logger": "^1.4.0",
-    "@bitgo/public-types": "6.17.0",
+    "@bitgo/public-types": "6.21.0",
     "@bitgo/sdk-core": "^37.3.0",
     "@bitgo/sdk-lib-mpc": "^10.14.0",
     "@bitgo/statics": "^58.43.0",

modules/sdk-core/package.json

@@ -40,7 +40,7 @@
     ]
   },
   "dependencies": {
-    "@bitgo/public-types": "6.17.0",
+    "@bitgo/public-types": "6.21.0",
     "@bitgo/sdk-lib-mpc": "^10.14.0",
     "@bitgo/secp256k1": "^1.11.0",
     "@bitgo/sjcl": "^1.1.0",

modules/sdk-core/src/bitgo/utils/tss/eddsa/SMC/utils.ts

@@ -0,0 +1,163 @@
+import assert from 'assert';
+import {
+  EddsaBitgoToOVC1Round1Response,
+  EddsaBitgoToOVC1Round2Response,
+  EddsaKeyCreationMPCv2StateEnum,
+  EddsaMPCv2KeyGenRound1Response,
+  EddsaMPCv2KeyGenRound2Response,
+  EddsaOVC1ToBitgoRound1Payload,
+  EddsaOVC2ToBitgoRound2Payload,
+  OVCIndexEnum,
+} from '@bitgo/public-types';
+import { IBaseCoin } from '../../../../baseCoin';
+import { BitGoBase } from '../../../../bitgoBase';
+import { decodeOrElse, Keychain } from '../../../..';
+import { EddsaMPCv2Utils } from '../eddsaMPCv2';
+import { EddsaMPCv2KeyGenSendFn, KeyGenSenderForEnterprise } from '../eddsaMPCv2KeyGenSender';
+
+export class MPCv2SMCUtils {
+  private MPCv2Utils: EddsaMPCv2Utils;
+
+  constructor(private bitgo: BitGoBase, private baseCoin: IBaseCoin) {
+    this.MPCv2Utils = new EddsaMPCv2Utils(bitgo, baseCoin);
+  }
+
+  public async keyGenRound1(
+    enterprise: string,
+    payload: EddsaOVC1ToBitgoRound1Payload
+  ): Promise<EddsaBitgoToOVC1Round1Response> {
+    return this.keyGenRound1BySender(KeyGenSenderForEnterprise(this.bitgo, enterprise), payload);
+  }
+
+  public async keyGenRound2(
+    enterprise: string,
+    payload: EddsaOVC2ToBitgoRound2Payload
+  ): Promise<EddsaBitgoToOVC1Round2Response> {
+    return this.keyGenRound2BySender(KeyGenSenderForEnterprise(this.bitgo, enterprise), payload);
+  }
+
+  public async keyGenRound1BySender(
+    senderFn: EddsaMPCv2KeyGenSendFn<EddsaMPCv2KeyGenRound1Response>,
+    payload: EddsaOVC1ToBitgoRound1Payload
+  ): Promise<EddsaBitgoToOVC1Round1Response> {
+    assert(
+      payload.state === EddsaKeyCreationMPCv2StateEnum.WaitingForBitgoRound1Data,
+      `Invalid state for round 1, expected: ${EddsaKeyCreationMPCv2StateEnum.WaitingForBitgoRound1Data}, got: ${payload.state}`
+    );
+    decodeOrElse(EddsaOVC1ToBitgoRound1Payload.name, EddsaOVC1ToBitgoRound1Payload, payload, (errors) => {
+      throw new Error(`error(s) parsing payload: ${errors}`);
+    });
+
+    const ovc1 = payload.ovc[OVCIndexEnum.ONE];
+    const ovc2 = payload.ovc[OVCIndexEnum.TWO];
+    const result = await this.MPCv2Utils.sendKeyGenerationRound1BySender(senderFn, {
+      userGpgPublicKey: ovc1.gpgPubKey,
+      backupGpgPublicKey: ovc2.gpgPubKey,
+      userMsg1: ovc1.ovcMsg1,
+      backupMsg1: ovc2.ovcMsg1,
+    });
+
+    const response = {
+      state: EddsaKeyCreationMPCv2StateEnum.WaitingForOVC1Round2Data,
+      tssVersion: payload.tssVersion,
+      walletType: payload.walletType,
+      coin: payload.coin,
+      ovc: payload.ovc,
+      platform: {
+        sessionId: result.sessionId,
+        bitgoMsg1: result.bitgoMsg1,
+      },
+    };
+
+    return decodeOrElse(EddsaBitgoToOVC1Round1Response.name, EddsaBitgoToOVC1Round1Response, response, (errors) => {
+      throw new Error(`error(s) parsing response: ${errors}`);
+    });
+  }
+
+  public async keyGenRound2BySender(
+    senderFn: EddsaMPCv2KeyGenSendFn<EddsaMPCv2KeyGenRound2Response>,
+    payload: EddsaOVC2ToBitgoRound2Payload
+  ): Promise<EddsaBitgoToOVC1Round2Response> {
+    assert(
+      payload.state === EddsaKeyCreationMPCv2StateEnum.WaitingForBitgoRound2Data,
+      `Invalid state for round 2, expected: ${EddsaKeyCreationMPCv2StateEnum.WaitingForBitgoRound2Data}, got: ${payload.state}`
+    );
+    decodeOrElse(EddsaOVC2ToBitgoRound2Payload.name, EddsaOVC2ToBitgoRound2Payload, payload, (errors) => {
+      throw new Error(`error(s) parsing payload: ${errors}`);
+    });
+
+    const ovc1 = payload.ovc[OVCIndexEnum.ONE];
+    const ovc2 = payload.ovc[OVCIndexEnum.TWO];
+    const sessionId = payload.platform.sessionId;
+    const result = await this.MPCv2Utils.sendKeyGenerationRound2BySender(senderFn, {
+      sessionId,
+      userMsg2: ovc1.ovcMsg2,
+      backupMsg2: ovc2.ovcMsg2,
+    });
+
+    assert.equal(sessionId, result.sessionId, 'Round 1 and round 2 session IDs do not match');
+
+    const keychains = this.baseCoin.keychains();
+    const bitgoKeychain = await keychains.add({
+      source: 'bitgo',
+      keyType: 'tss',
+      commonKeychain: result.commonPublicKeychain,
+      isMPCv2: true,
+    });
+
+    const response = {
+      state: EddsaKeyCreationMPCv2StateEnum.WaitingForOVC1GenerateKey,
+      bitGoKeyId: bitgoKeychain.id,
+      tssVersion: payload.tssVersion,
+      walletType: payload.walletType,
+      coin: payload.coin,
+      ovc: payload.ovc,
+      platform: {
+        // sessionId carried over from payload.platform; safe because the assert above
+        // guarantees it equals result.sessionId.
+        ...payload.platform,
+        commonPublicKeychain: result.commonPublicKeychain,
+        bitgoMsg2: result.bitgoMsg2,
+      },
+    };
+
+    return decodeOrElse(EddsaBitgoToOVC1Round2Response.name, EddsaBitgoToOVC1Round2Response, response, (errors) => {
+      throw new Error(`error(s) parsing response: ${errors}`);
+    });
+  }
+
+  public async uploadClientKeys(
+    bitgoKeyId: string,
+    userCommonKeychain: string,
+    backupCommonKeychain: string
+  ): Promise<{ userKeychain: Keychain; backupKeychain: Keychain; bitgoKeychain: Keychain }> {
+    assert(
+      userCommonKeychain === backupCommonKeychain,
+      'Common keychain mismatch between the user and backup keychains'
+    );
+
+    const keychains = this.baseCoin.keychains();
+    const bitgoKeychain = await keychains.get({ id: bitgoKeyId });
+    assert(bitgoKeychain, 'Keychain not found');
+    assert(bitgoKeychain.source === 'bitgo', 'The keychain is not a BitGo keychain');
+    assert(bitgoKeychain.type === 'tss', 'BitGo keychain is not a TSS keychain');
+    assert(bitgoKeychain.commonKeychain, 'BitGo keychain does not have a common keychain');
+    assert(bitgoKeychain.commonKeychain === userCommonKeychain, 'Common keychain mismatch between the OVCs and BitGo');
+
+    const userKeychainPromise = keychains.add({
+      source: 'user',
+      keyType: 'tss',
+      commonKeychain: userCommonKeychain,
+      isMPCv2: true,
+    });
+    const backupKeychainPromise = keychains.add({
+      source: 'backup',
+      keyType: 'tss',
+      commonKeychain: backupCommonKeychain,
+      isMPCv2: true,
+    });
+
+    const [userKeychain, backupKeychain] = await Promise.all([userKeychainPromise, backupKeychainPromise]);
+    return { userKeychain, backupKeychain, bitgoKeychain };
+  }
+}

modules/sdk-core/src/bitgo/utils/tss/eddsa/index.ts

@@ -17,3 +17,4 @@ export {
 export * from './eddsaMPCv2';
 export * from './eddsaMPCv2KeyGenSender';
 export * from './typesEddsaMPCv2';
+export * from './SMC/utils';