Expand description
Generic implementation of Parallelizable Message Authentication Code (PMAC), otherwise known as OMAC1.
Examples
We will use AES-128 block cipher from the aes crate.
To get authentication code:
use aes::Aes128;
use pmac::{Pmac, Mac};
// Create `Mac` trait implementation, namely PMAC-AES128
let mut mac = Pmac::<Aes128>::new_from_slice(b"very secret key.").unwrap();
mac.update(b"input message");
// `result` has type `Output` which is a thin wrapper around array of
// bytes for providing constant time equality check
let result = mac.finalize();
// To get underlying array use `into_bytes` method, but be careful, since
// incorrect use of the tag value may permit timing attacks which defeat
// the security provided by the `Output` wrapper
let tag_bytes = result.into_bytes();To verify the message:
let mut mac = Pmac::<Aes128>::new_from_slice(b"very secret key.").unwrap();
mac.update(b"input message");
// `verify` will return `Ok(())` if tag is correct, `Err(MacError)` otherwise
mac.verify(&tag_bytes).unwrap();Re-exports
pub use digest;Structs
Generic PMAC instance
Traits
Convinience wrapper trait covering functionality of Message Authentication algorithms.
Type Definitions
Generic CMAC instance.