DES Encryption/Decryption Tool

DES (Data Encryption Standard) is a symmetric-key algorithm for encrypting and decrypting data. This tool allows you to encrypt plaintext or decrypt ciphertext using DES encryption with ECB or CBC modes.

Encrypt
The key must be exactly 8 bytes (64 bits).
Decrypt
The key must be exactly 8 bytes (64 bits).
What is DES?

DES (Data Encryption Standard) is a symmetric-key block cipher algorithm that was adopted as a standard by the U.S. government in 1977. It encrypts data in 64-bit blocks using a 56-bit key (with 8 parity bits, making it 64 bits total).

While DES was widely used for decades, it is now considered insecure for most applications due to its short key length, which makes it vulnerable to brute-force attacks. For modern applications, AES (Advanced Encryption Standard) is recommended instead.

Key Features
  • Block size: 64 bits (8 bytes)
  • Key size: 56 bits effective (64 bits with parity)
  • Supports ECB (Electronic Codebook) and CBC (Cipher Block Chaining) modes
  • Uses 16 rounds of Feistel network structure
Security Notice

DES is considered cryptographically weak by modern standards. The 56-bit key length makes it vulnerable to brute-force attacks using modern computing power.

For production systems, use more secure alternatives like AES-256, which offers significantly stronger security.

Privacy & Security

All encryption and decryption operations are performed locally in your browser using CryptoJS library. No data is sent to our servers, ensuring your information remains completely private and secure.