AES Encryption / Decryption

Algorithm: AES-CBC (Cipher Block Chaining)
Key Sizes: 128-bit (16 bytes), 192-bit (24 bytes), or 256-bit (32 bytes)
IV Size: 128-bit (16 bytes)
Output: Base64 encoded cipher text
Compatible with: .NET Aes.Create(), Java AES/CBC/PKCS7Padding, OpenSSL

Encrypt and decrypt text using AES-256-CBC with your key and IV. Works entirely in your browser.

Secret Key (AES-128/192/256)

Initialization Vector (IV) - 16 bytes

Plain Text

All encryption and decryption happens entirely in your browser using the Web Crypto API. No data is sent to any server.

Keep your key and IV safe! Without them, you cannot decrypt your data. Use a new random IV for each encryption for maximum security.