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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/@near-js/crypto/lib/esm

Просмотр файла: key_pair_ed25519.js

import { baseEncode, baseDecode } from "@near-js/utils";
import { ed25519 } from "@noble/curves/ed25519";
import randombytes from "randombytes";
import { KeySize, KeyType } from "./constants.js";
import { KeyPairBase } from "./key_pair_base.js";
import { PublicKey } from "./public_key.js";
class KeyPairEd25519 extends KeyPairBase {
  publicKey;
  secretKey;
  extendedSecretKey;
  /**
   * Construct an instance of key pair given a secret key.
   * It's generally assumed that these are encoded in base58.
   * @param extendedSecretKey
   */
  constructor(extendedSecretKey) {
    super();
    const decoded = baseDecode(extendedSecretKey);
    const secretKey = new Uint8Array(decoded.slice(0, KeySize.SECRET_KEY));
    const publicKey = ed25519.getPublicKey(new Uint8Array(secretKey));
    this.publicKey = new PublicKey({ keyType: KeyType.ED25519, data: publicKey });
    this.secretKey = baseEncode(secretKey);
    this.extendedSecretKey = extendedSecretKey;
  }
  /**
   * Generate a new random keypair.
   * @example
   * const keyRandom = KeyPair.fromRandom();
   * keyRandom.publicKey
   * // returns [PUBLIC_KEY]
   *
   * keyRandom.secretKey
   * // returns [SECRET_KEY]
   */
  static fromRandom() {
    const secretKey = randombytes(KeySize.SECRET_KEY);
    const publicKey = ed25519.getPublicKey(new Uint8Array(secretKey));
    const extendedSecretKey = new Uint8Array([...secretKey, ...publicKey]);
    return new KeyPairEd25519(baseEncode(extendedSecretKey));
  }
  /**
   * Signs a message using the key pair's secret key.
   * @param message The message to be signed.
   * @returns {Signature} The signature object containing the signature and the public key.
   */
  sign(message) {
    const signature = ed25519.sign(message, baseDecode(this.secretKey));
    return { signature, publicKey: this.publicKey };
  }
  /**
   * Verifies the signature of a message using the key pair's public key.
   * @param message The message to be verified.
   * @param signature The signature to be verified.
   * @returns {boolean} `true` if the signature is valid, otherwise `false`.
   */
  verify(message, signature) {
    return this.publicKey.verify(message, signature);
  }
  /**
   * Returns a string representation of the key pair in the format 'ed25519:[extendedSecretKey]'.
   * @returns {string} The string representation of the key pair.
   */
  toString() {
    return `ed25519:${this.extendedSecretKey}`;
  }
  /**
   * Retrieves the public key associated with the key pair.
   * @returns {PublicKey} The public key.
   */
  getPublicKey() {
    return this.publicKey;
  }
}
export {
  KeyPairEd25519
};

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