@airgap/coinlib-core
Version:
The @airgap/coinlib-core is a protocol agnostic library to prepare, sign and broadcast cryptocurrency transactions.
107 lines • 6.46 kB
JavaScript
;
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
if (typeof b !== "function" && b !== null)
throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
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return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
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if (y = 0, t) op = [op[0] & 2, t.value];
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};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Ed25519CryptoClient = void 0;
var bytes_1 = require("@stablelib/bytes");
var blake2b_1 = require("@stablelib/blake2b");
var ed25519_1 = require("@stablelib/ed25519");
var nacl_1 = require("@stablelib/nacl");
var utf8_1 = require("@stablelib/utf8");
var hex_1 = require("../utils/hex");
var CryptoClient_1 = require("./CryptoClient");
function toHex(value) {
return Buffer.from(value).toString('hex');
}
var Ed25519CryptoClient = /** @class */ (function (_super) {
__extends(Ed25519CryptoClient, _super);
function Ed25519CryptoClient() {
return _super !== null && _super.apply(this, arguments) || this;
}
Ed25519CryptoClient.prototype.encryptAsymmetric = function (payload, publicKey) {
return __awaiter(this, void 0, void 0, function () {
var kxOtherPublicKey, keypair, state, nonce, encryptedMessage;
return __generator(this, function (_a) {
kxOtherPublicKey = (0, ed25519_1.convertPublicKeyToX25519)(Buffer.from(publicKey, 'hex'));
keypair = (0, nacl_1.generateKeyPair)();
state = new blake2b_1.BLAKE2b(24);
nonce = state.update(keypair.publicKey, 32).update(kxOtherPublicKey, 32).digest();
encryptedMessage = (0, nacl_1.box)(kxOtherPublicKey, keypair.secretKey, nonce, (0, hex_1.isHex)(payload) ? Buffer.from(payload, 'hex') : (0, utf8_1.encode)(payload));
return [2 /*return*/, toHex((0, bytes_1.concat)(keypair.publicKey, encryptedMessage))];
});
});
};
Ed25519CryptoClient.prototype.decryptAsymmetric = function (encryptedPayload, keypair) {
return __awaiter(this, void 0, void 0, function () {
var kxSelfPrivateKey, kxSelfPublicKey, encryptedPayloadBytes, kxOtherPublicKey, ciphertext, state, nonce, decryptedMessage;
return __generator(this, function (_a) {
kxSelfPrivateKey = (0, ed25519_1.convertSecretKeyToX25519)(Buffer.from(keypair.privateKey, 'hex')) // Secret bytes to scalar bytes
;
kxSelfPublicKey = (0, ed25519_1.convertPublicKeyToX25519)(Buffer.from(keypair.publicKey, 'hex')) // Secret bytes to scalar bytes
;
encryptedPayloadBytes = Buffer.from(encryptedPayload, (0, hex_1.isHex)(encryptedPayload) ? 'hex' : 'utf-8');
kxOtherPublicKey = encryptedPayloadBytes.slice(0, 32);
ciphertext = encryptedPayloadBytes.slice(32);
state = new blake2b_1.BLAKE2b(24);
nonce = state.update(kxOtherPublicKey, 32).update(kxSelfPublicKey, 32).digest();
decryptedMessage = (0, nacl_1.openBox)(kxOtherPublicKey, kxSelfPrivateKey, nonce, ciphertext);
if (decryptedMessage === null) {
throw new Error('Ed25519 decryption failed.');
}
return [2 /*return*/, Buffer.from(decryptedMessage).toString()];
});
});
};
return Ed25519CryptoClient;
}(CryptoClient_1.CryptoClient));
exports.Ed25519CryptoClient = Ed25519CryptoClient;
//# sourceMappingURL=Ed25519CryptoClient.js.map