tiny-essentials
Version:
Collection of small, essential scripts designed to be used across various projects. These simple utilities are crafted for speed, ease of use, and versatility.
48 lines (47 loc) • 2.22 kB
JavaScript
// Module
import { createCipheriv, randomBytes } from 'crypto';
/**
* Encrypts a given string using the specified algorithm, key, and string encoding.
*
* @private
* @param {Object} tinyCrypto - The crypto configuration object.
* @param {number} tinyCrypto.IV_LENGTH - The byte length of the initialization vector (e.g., 16).
* @param {string} tinyCrypto.algorithm - The encryption algorithm (e.g., 'aes-256-cbc').
* @param {BufferEncoding} tinyCrypto.stringType - The encoding to use when converting buffers to strings (e.g., 'hex', 'base64').
* @param {string} key - The encryption key.
* @param {string} text - The plain text to encrypt.
* @returns {string} The encrypted string in the format `iv:encryptedData`.
*/
const cryptoAction = function (tinyCrypto, key, text) {
let iv = randomBytes(tinyCrypto.IV_LENGTH);
let cipher = createCipheriv(tinyCrypto.algorithm, Buffer.from(key), iv);
let encrypted = cipher.update(text);
encrypted = Buffer.concat([encrypted, cipher.final()]);
return iv.toString(tinyCrypto.stringType) + ':' + encrypted.toString(tinyCrypto.stringType);
};
/**
* Encrypts a string using one or more keys from the provided crypto configuration.
*
* If `tinyCrypto.key` is an array, the encryption is applied sequentially (layered encryption).
*
* @param {Object} tinyCrypto - The crypto configuration object.
* @param {string|string[]} tinyCrypto.key - A single encryption key or an array of keys to apply in sequence.
* @param {number} tinyCrypto.IV_LENGTH - The byte length of the initialization vector.
* @param {string} tinyCrypto.algorithm - The encryption algorithm to use.
* @param {BufferEncoding} tinyCrypto.stringType - The encoding type used for output (e.g., 'hex', 'base64').
* @param {string} text - The plain text string to encrypt.
* @returns {string} The final encrypted string.
* @deprecated
*/
export function encrypt(tinyCrypto, text) {
// Prepare Result
let result = text;
if (!Array.isArray(tinyCrypto.key)) {
tinyCrypto.key = [tinyCrypto.key];
}
for (const item in tinyCrypto.key) {
result = cryptoAction(tinyCrypto, tinyCrypto.key[item], result);
}
// Complete
return result;
}