@mercury-labs/hashing
Version:
Mercury framework hashing library
78 lines • 3.31 kB
JavaScript
;
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.HashTextService = void 0;
const common_1 = require("@nestjs/common");
const crypto_1 = __importDefault(require("crypto"));
let HashTextService = class HashTextService {
constructor(_options) {
var _a;
this._options = _options;
this._algorithm = 'aes-256-ctr';
if (!((_a = this._options) === null || _a === void 0 ? void 0 : _a.secretKey) || this._options.secretKey.length !== 32) {
throw new common_1.BadRequestException('INVALID_HASHING_SECRET_KEY', 'Secret key is required and should be 32 characters');
}
}
encode(text) {
if (!text || !this._options.enabled || !this._options.secretKey) {
return '';
}
const iv = crypto_1.default.randomBytes(16);
const cipher = crypto_1.default.createCipheriv(this._algorithm, this._options.secretKey, iv);
const encrypted = Buffer.concat([cipher.update(text), cipher.final()]);
return Buffer.from(JSON.stringify({
iv: iv.toString('hex'),
content: encrypted.toString('hex'),
})).toString('base64');
}
decode(hashedText) {
if (!hashedText || !this._options.enabled || !this._options.secretKey) {
return '';
}
try {
const hash = JSON.parse(Buffer.from(hashedText, 'base64').toString('utf-8'));
const decipher = crypto_1.default.createDecipheriv(this._algorithm, this._options.secretKey, Buffer.from(hash.iv, 'hex'));
return Buffer.concat([
decipher.update(Buffer.from(hash.content, 'hex')),
decipher.final(),
]).toString();
}
catch {
return undefined;
}
}
encodeJSON(obj) {
try {
return this.encode(JSON.stringify(obj));
}
catch {
return undefined;
}
}
decodeJSON(hashedObj) {
try {
const decodedText = this.decode(hashedObj);
return decodedText ? JSON.parse(decodedText) : undefined;
}
catch {
return undefined;
}
}
};
HashTextService = __decorate([
(0, common_1.Injectable)(),
__metadata("design:paramtypes", [Object])
], HashTextService);
exports.HashTextService = HashTextService;
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