Struct Eax

pub struct Eax<Cipher, M = U16>
where
    Cipher: BlockCipher<BlockSize = U16> + BlockEncrypt + Clone + KeyInit,
    M: TagSize,
{ /* private fields */ }

EAX: generic over an underlying block cipher implementation.

This type is generic to support substituting alternative cipher implementations.

If in doubt, use the built-in [Aes128Eax] and [Aes256Eax] type aliases.

Type parameters:

• Cipher: block cipher.
• M: size of MAC tag, valid values: up to U16.

Trait Implementations

impl<Cipher, M> AeadCore for Eax<Cipher, M>

where Cipher: BlockCipher<BlockSize = U16> + BlockEncrypt + Clone + KeyInit, M: TagSize,

type NonceSize = <Cipher as BlockSizeUser>::BlockSize

The length of a nonce.

type TagSize = M

The maximum length of the nonce.

type CiphertextOverhead = UTerm

The upper bound amount of additional space required to support a ciphertext vs. a plaintext.

fn generate_nonce( rng: impl CryptoRng + RngCore, ) -> GenericArray<u8, Self::NonceSize>

where GenericArray<u8, Self::NonceSize>: Default,

Generate a random nonce for this AEAD algorithm.

impl<Cipher, M> AeadInPlace for Eax<Cipher, M>

where Cipher: BlockCipher<BlockSize = U16> + BlockEncrypt + Clone + KeyInit, M: TagSize,

fn encrypt_in_place_detached( &self, nonce: &Nonce<Self::NonceSize>, associated_data: &[u8], buffer: &mut [u8], ) -> Result<Tag<M>, Error>

Encrypt the data in-place, returning the authentication tag

fn decrypt_in_place_detached( &self, nonce: &Nonce<Self::NonceSize>, associated_data: &[u8], buffer: &mut [u8], tag: &Tag<M>, ) -> Result<(), Error>

Decrypt the message in-place, returning an error in the event the provided authentication tag does not match the given ciphertext (i.e. ciphertext is modified/unauthentic)

fn encrypt_in_place( &self, nonce: &GenericArray<u8, Self::NonceSize>, associated_data: &[u8], buffer: &mut dyn Buffer, ) -> Result<(), Error>

Encrypt the given buffer containing a plaintext message in-place.

fn decrypt_in_place( &self, nonce: &GenericArray<u8, Self::NonceSize>, associated_data: &[u8], buffer: &mut dyn Buffer, ) -> Result<(), Error>

Decrypt the message in-place, returning an error in the event the provided authentication tag does not match the given ciphertext.

impl<Cipher, M> Clone for Eax<Cipher, M>

where Cipher: BlockCipher<BlockSize = U16> + BlockEncrypt + Clone + KeyInit + Clone, M: TagSize + Clone,

fn clone(&self) -> Eax<Cipher, M>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<Cipher, M> KeyInit for Eax<Cipher, M>

where Cipher: BlockCipher<BlockSize = U16> + BlockEncrypt + Clone + KeyInit, M: TagSize,

fn new(key: &Key<Cipher>) -> Self

Create new value from fixed size key.

fn new_from_slice(key: &[u8]) -> Result<Self, InvalidLength>

Create new value from variable size key.

fn generate_key( rng: impl CryptoRng + RngCore, ) -> GenericArray<u8, Self::KeySize>

Generate random key using the provided CryptoRng.

impl<Cipher, M> KeySizeUser for Eax<Cipher, M>

where Cipher: BlockCipher<BlockSize = U16> + BlockEncrypt + Clone + KeyInit, M: TagSize,

type KeySize = <Cipher as KeySizeUser>::KeySize

Key size in bytes.

fn key_size() -> usize

Return key size in bytes.