DES Encrypt / Decrypt

About DES:

1. DES (Data Encryption Standard) is a symmetric-key algorithm developed by IBM.
2. It encrypts 64-bit blocks using a 56-bit effective key.
3. One parity bit per byte makes 64 bits total, with 56 bits effective.
4. DES is considered weak today due to short key length and other issues.

How to Use

What this tool does

Encrypt and decrypt text with DES for legacy compatibility testing. All operations run locally.

Steps

Click Generate Key to create a random 56‑bit effective key.
Enter plaintext and click Encrypt to get Base64 ciphertext.
Paste ciphertext and click Decrypt with the same key.

Examples

Key: 7 bytes random → Encrypt: "test" → Base64 ciphertext.

Notes

DES is deprecated and not secure for new systems; use AES instead.
Keep the key safe; you need it to decrypt.
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