@li0ard/des
DES cipher implementation in pure TypeScript
docs

---

Installation

# from NPM
npm i @li0ard/des

# from JSR
bunx jsr i @li0ard/des

Supported algorithms

• Classic DES
• 3DES-EDE

Supported modes

• Electronic Codebook (ECB)
• Cipher Block Chaining (CBC)
• Cipher Feedback (CFB)
• Counter (CTR)
• Output Feedback (OFB)
• Retail MAC (ISO/IEC 9797-1 Algorithm 3)

Features

• Provides simple and modern API
• Most of the APIs are strictly typed
• Fully complies with FIPS 46-3 standard
• Supports Bun, Node.js, Deno, Browsers

Examples

ECB mode

import { decryptECB, encryptECB } from "@li0ard/des";

const key = Buffer.from("1122334455667788", "hex");
const plaintext = Buffer.from("11223344556677881122334455667788", "hex");
const encrypted = encryptECB(key, plaintext);
console.log(encrypted); // Uint8Array [ ... ]

const decrypted = decryptECB(key, encrypted);
console.log(decrypted); // Uint8Array [ ... ]

ECB mode (3DES-EDE)

import { decryptECB, encryptECB } from "@li0ard/des";

const key = Buffer.from("1122334455667788...1122334455667788", "hex");
const plaintext = Buffer.from("11223344556677881122334455667788", "hex");
const encrypted = encryptECB(key, plaintext, true);
console.log(encrypted); // Uint8Array [ ... ]

const decrypted = decryptECB(key, encrypted, true);
console.log(decrypted); // Uint8Array [ ... ]