AES Online Encryptor/Decryptor

This tool performs local AES encryption and decryption with multiple cipher modes, paddings, key sizes, and both text/file workflows.

Key Features

• CBC, ECB, CTR, CFB, and OFB modes
• 128/192/256-bit key sizes
• Text and file encryption/decryption
• Key/IV generation, copy, and format switching

Steps

1. Choose encrypt or decrypt mode.
2. Configure cipher mode, padding, and key size.
3. Enter key and IV (IV required except ECB).
4. Input text or upload file, then process.

Notes

• IV and padding requirements depend on selected mode.
• Keep key and IV safe; plaintext cannot be recovered without them.
• Prefer safer block modes such as CBC/CTR for practical usage.