process.stdin.resume();
process.stdin.setEncoding('utf8');
'use strict';
 
const crypto = require('crypto');
 
const ENCRYPTION_KEY = process.env.ENCRYPTION_KEY; // Must be 256 bits (32 characters)
const IV_LENGTH = 16; // For AES, this is always 16
 
function encrypt(text) {
 let iv = crypto.randomBytes(IV_LENGTH);
 let cipher = crypto.createCipheriv('aes-256-cbc', Buffer.from(ENCRYPTION_KEY), iv);
 let encrypted = cipher.update(text);
 
 encrypted = Buffer.concat([encrypted, cipher.final()]);
 
 return iv.toString('hex') + ':' + encrypted.toString('hex');
}
 
function decrypt(text) {
 let textParts = text.split(':');
 let iv = Buffer.from(textParts.shift(), 'hex');
 let encryptedText = Buffer.from(textParts.join(':'), 'hex');
 let decipher = crypto.createDecipheriv('aes-256-cbc', Buffer.from(ENCRYPTION_KEY), iv);
 let decrypted = decipher.update(encryptedText);
 
 decrypted = Buffer.concat([decrypted, decipher.final()]);
 
 return decrypted.toString();
}
 
module.exports = { decrypt, encrypt };

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