AEAD

RFC 9180 aead_id

The length in bytes of a key for this algorithm.

The length in bytes of a nonce for this algorithm.

The length in bytes of the authentication tag for this algorithm.

Decrypt ciphertext and tag ct using associated data aad with symmetric key key and nonce nonce, returning plaintext message pt. This function can raise an OpenError or MessageLimitReachedError upon failure.

Encrypt and authenticate plaintext pt with associated data aad using symmetric key key and nonce nonce, yielding ciphertext and tag ct. This function can raise a MessageLimitReachedError upon failure.