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Текущая директория: /opt/BitGoJS/modules/sdk-core/dist/src/bitgo/trading/network
Просмотр файла: decrypt-aes-gcm.js
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports._decryptAesGcm = _decryptAesGcm;
const crypto_1 = __importDefault(require("crypto"));
const utils_1 = require("./utils");
/**
* Decrypts a string using AES-GCM
* @param {string | Buffer} secret The secret to use for decryption
* @param {string} encryptedText The text to decrypt
* @returns {string} The decrypted text
*/
async function _decryptAesGcm(secret, encryptedText) {
const data = Buffer.from(encryptedText, 'base64');
const version = data.slice(0, 1);
if (version.readInt8() !== 1) {
throw new Error('Unknown encryption version');
}
const salt = data.slice(1, 17);
const iv = data.slice(17, 29);
const authTag = data.slice(-16);
const encrypted = data.slice(29, -16);
const key = await (0, utils_1.computeKey)(secret, salt);
const decipher = crypto_1.default.createDecipheriv('aes-256-gcm', key, iv);
decipher.setAuthTag(authTag);
const decrypted = Buffer.concat([decipher.update(encrypted), decipher.final()]);
return decrypted.toString('utf8');
}
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