@airgap/aeternity/v1/protocol/AeternityCryptoClient.js

The @airgap/aeternity is an Aeternity implementation of the ICoinProtocol interface from @airgap/coinlib-core.

"use strict";
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        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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})();
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Object.defineProperty(exports, "__esModule", { value: true });
exports.AeternityCryptoClient = void 0;
var errors_1 = require("@airgap/coinlib-core/errors");
var coinlib_error_1 = require("@airgap/coinlib-core/errors/coinlib-error");
var Ed25519CryptoClient_1 = require("@airgap/coinlib-core/protocols/Ed25519CryptoClient");
var ed25519_1 = require("@stablelib/ed25519");
var personalMessageToBinary = function (message) {
    var prefix = Buffer.from('‎Æternity Signed Message:\n', 'utf8');
    var messageBuffer = Buffer.from(message, 'utf8');
    if (messageBuffer.length >= 0xfd) {
        throw new errors_1.InvalidValueError(coinlib_error_1.Domain.AETERNITY, 'message too long');
    }
    return Buffer.concat([Buffer.from([prefix.length]), prefix, Buffer.from([messageBuffer.length]), messageBuffer]);
};
var AeternityCryptoClient = /** @class */ (function (_super) {
    __extends(AeternityCryptoClient, _super);
    function AeternityCryptoClient() {
        return _super.call(this) || this;
    }
    AeternityCryptoClient.prototype.signMessage = function (message, keypair) {
        return __awaiter(this, void 0, void 0, function () {
            var messageBuffer, rawSignature;
            return __generator(this, function (_a) {
                messageBuffer = personalMessageToBinary(message);
                rawSignature = (0, ed25519_1.sign)(Buffer.from(keypair.privateKey, 'hex'), messageBuffer);
                return [2 /*return*/, Buffer.from(rawSignature).toString('hex')];
            });
        });
    };
    AeternityCryptoClient.prototype.verifyMessage = function (message, signature, publicKey) {
        return __awaiter(this, void 0, void 0, function () {
            var rawSignature, messageBuffer;
            return __generator(this, function (_a) {
                rawSignature = Buffer.from(signature, 'hex');
                messageBuffer = personalMessageToBinary(message);
                return [2 /*return*/, (0, ed25519_1.verify)(Buffer.from(publicKey, 'hex'), messageBuffer, rawSignature)];
            });
        });
    };
    return AeternityCryptoClient;
}(Ed25519CryptoClient_1.Ed25519CryptoClient));
exports.AeternityCryptoClient = AeternityCryptoClient;
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