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• .. (вверх)
• [DIR] ..
• [DIR] SMC
• [FILE] base.ts
• [FILE] ecdsa.ts
• [FILE] ecdsaMPCv2.ts
• [FILE] ecdsaMPCv2KeyGenSender.ts
• [FILE] index.ts
• [FILE] types.ts
• [FILE] typesMPCv2.ts

Просмотр файла: base.ts

import { secp256k1 } from '@noble/curves/secp256k1';

import { IBaseCoin } from '../../../baseCoin';
import baseTSSUtils from '../baseTSSUtils';
import { KeyShare } from './types';
import { BackupGpgKey } from '../baseTypes';
import { generateGPGKeyPair } from '../../opengpgUtils';
import { BitGoBase } from '../../../bitgoBase';
import { IWallet } from '../../../wallet';

/** @inheritdoc */
export class BaseEcdsaUtils extends baseTSSUtils<KeyShare> {
  // We do not have full support for 3-party verification (w/ external source) of key shares and signature shares. There is no 3rd party key service support with this release.

  constructor(bitgo: BitGoBase, baseCoin: IBaseCoin, wallet?: IWallet) {
    super(bitgo, baseCoin, wallet);
    this.setBitgoGpgPubKey(bitgo);
  }

  /**
   * Gets backup pub gpg key string
   */
  async getBackupGpgPubKey(): Promise<BackupGpgKey> {
    return generateGPGKeyPair('secp256k1');
  }

  /**
   * util function that checks that a commonKeychain is valid and can ultimately resolve to a valid public key
   * @param commonKeychain - a user uploaded commonKeychain string
   * @throws if the commonKeychain is invalid length or invalid format
   */

  static validateCommonKeychainPublicKey(commonKeychain: string) {
    const pub = BaseEcdsaUtils.getPublicKeyFromCommonKeychain(commonKeychain);
    try {
      const point = secp256k1.ProjectivePoint.fromHex(pub);
      return point.toHex(false).slice(2);
    } catch (e) {
      throw new Error('Invalid commonKeychain, error: ' + e.message);
    }
  }

  /**
   * Gets the common public key from commonKeychain.
   *
   * @param {String} commonKeychain common key chain between n parties
   * @returns {string} encoded public key
   */
  static getPublicKeyFromCommonKeychain(commonKeychain: string): string {
    if (commonKeychain.length !== 130) {
      throw new Error(`Invalid commonKeychain length, expected 130, got ${commonKeychain.length}`);
    }
    const commonPubHexStr = commonKeychain.slice(0, 66);
    return commonPubHexStr;
  }
}

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