@appveen/json-utils/lib/crypt.utils.js

Flatten object, unflatten object and find n level value and much more

const crypto = require('crypto');

const e = {};

e.encrypt = (data, secret) => {
    if (typeof data === 'object') {
        data = JSON.stringify(data);
    }
    const digestHash = crypto.createHash('sha256').update(secret).digest('hex');
    const allocatedKey = Buffer.alloc(32, digestHash);
    const iv = crypto.randomBytes(IV_LENGTH);
    const cipher = crypto.createCipheriv('aes-256-cbc', allocatedKey, iv);
    let cipherText = cipher.update(data, 'utf-8', 'hex');
    cipherText += cipher.final('hex');
    cipherText = iv.toString('hex') + cipherText;
    return cipherText;
};

e.decrypt = (data, secret) => {
    const digestHash = crypto.createHash('sha256').update(secret).digest('hex');
    const allocatedKey = Buffer.alloc(32, digestHash);
    const bufferData = Buffer.from(data, 'hex');
    const iv = bufferData.slice(0, IV_LENGTH);
    const textData = bufferData.slice(IV_LENGTH);
    const decipher = crypto.createDecipheriv('aes-256-cbc', allocatedKey, iv);
    let decipherText = decipher.update(textData, 'hex', 'utf-8');
    decipherText += decipher.final('utf-8');
    let returnValue;
    try {
        returnValue = JSON.parse(decipherText);
    } catch (e) {
        returnValue = decipherText;
    }
    return returnValue;
};

module.exports = e;