zcatalyst-cli/lib/internal/crypt.js

Command Line Tool for CATALYST

'use strict';
Object.defineProperty(exports, "__esModule", { value: true });
const crypto_1 = require("crypto");
class Crypt {
    constructor(password) {
        this.encryptionKey = password;
        this.cryptAlgo = 'aes-256-cbc';
    }
    decrypt(value) {
        let data = Buffer.from(value, 'hex');
        if (data.slice(16, 17).toString() !== ':') {
            return value;
        }
        const initializationVector = data.slice(0, 16);
        const password = (0, crypto_1.pbkdf2Sync)(this.encryptionKey, initializationVector.toString(), 1000, 32, 'sha512');
        const decipher = (0, crypto_1.createDecipheriv)(this.cryptAlgo, password, initializationVector);
        data = Buffer.concat([decipher.update(data.slice(17)), decipher.final()]);
        return this._deserialize(data.toString());
    }
    encrypt(value) {
        const data = this._serialize(value);
        const initializationVector = (0, crypto_1.randomBytes)(16);
        const password = (0, crypto_1.pbkdf2Sync)(this.encryptionKey, initializationVector.toString(), 1000, 32, 'sha512');
        const cipher = (0, crypto_1.createCipheriv)(this.cryptAlgo, password, initializationVector);
        const dataBuff = Buffer.concat([
            initializationVector,
            Buffer.from(':'),
            cipher.update(Buffer.from(data)),
            cipher.final()
        ]);
        return dataBuff.toString('hex');
    }
    isEncrypted(value) {
        try {
            const data = Buffer.from(value, 'hex');
            if (data.slice(16, 17).toString() === ':') {
                return true;
            }
        }
        catch (err) {
            return false;
        }
        return false;
    }
    _serialize(value) {
        return JSON.stringify(value, null, '');
    }
    _deserialize(value) {
        return JSON.parse(value);
    }
}
exports.default = Crypt;