Struct GmacVt 

pub struct GmacVt<C> { /* private fields */ }

Variable-time Galois Message Authentication Code (GMAC) reference path.

This keeps the historical variable-time GHASH backend for comparison. Use Gmac for the constant-time default.

Implementations

impl<C> GmacVt<C>

pub fn new(cipher: C) -> Self

Wrap a 128-bit block cipher in variable-time SP 800-38D GMAC mode.

pub fn cipher(&self) -> &C

Borrow the wrapped block cipher.

impl<C: BlockCipher> GmacVt<C>

pub fn compute(&self, nonce: &[u8], aad: &[u8]) -> [u8; 16]

Compute a GMAC tag over associated data only.

pub fn verify(&self, nonce: &[u8], aad: &[u8], tag: &[u8]) -> bool

Verify a GMAC tag in constant time.