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🔐 Triple DES Encryption / Decryption
3DES applies DES cipher three times to each block. Stronger than DES but deprecated — provided for legacy compatibility.
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Triple DES was deprecated by NIST in 2023. It is still more secure than single DES but significantly slower and weaker than AES. Use only for legacy system compatibility. For new projects, use AES-256.
Settings
3DES
3DES uses 3 × 8-byte DES keys concatenated (24 bytes total). Shorter keys will be padded.
Must match IV used during encryption for decryption to work
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3DES key variants: Keying option 1 (3 independent keys, 168-bit) is most secure. Keying option 2 (K1=K3≠K2, 112-bit) is common. Keying option 3 (K1=K2=K3) equals single DES.
Input
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Output
Encrypted / decrypted result will appear here…
DES vs 3DES vs AES Comparison
| Algorithm | Key Size | Security | Status |
|---|---|---|---|
| DES | 56-bit | Broken | Withdrawn 2005 |
| 3DES | 112 / 168-bit | Weak | Deprecated 2023 |
| AES-256 | 256-bit | Strong | ✓ Current Standard |