AES Encrypt/Decrypt

What it calculates

Encrypts or decrypts byte data with AES.

Inputs and methods

128/192/256-bit HEX keys; ECB, CBC, CFB, OFB or GCM. IV, padding and authentication fields depend on mode.

Worked example

AES-128, ECB, no padding. Key and plaintext are each 16 zero bytes.

66E94BD4EF8A2C3B884CFA59CA342B2E

Specification and limits

This fixed input is a test vector. GCM requires correct nonce and tag handling; ECB does not authenticate data.