Struct serpent::Serpent

pub struct Serpent { /* fields omitted */ }

The Serpent cipher instance

Implements both a friendly u128 encryption interface as well as the common Rust crypto block_cipher_trait::BlockCipher trait for easy use in stream cipher algorithms.

Methods

impl Serpent

pub fn with_binary_key(key: &[u8]) -> Option<Serpent>

Constructs an instance from a little-endian binary key, only takes keys whose length are a multiple of eight bits.

pub fn with_text_key(key: &str) -> Option<Serpent>

Constructs an instance from a big-endian text representation of a hexadecimal key, e.g. "abcdef0123456". Key length is assumed to be a multiple of four bits.

pub fn encrypt_block(&self, block: u128) -> u128

Easy encryption of a block stored in a 128-bit little-endian integer

pub fn decrypt_block(&self, block: u128) -> u128

Easy decryption of a block stored in a 128-bit little-endian integer

Trait Implementations

impl BlockCipher for Serpent

Implements BlockCipher with 256-bit keys as the favoured fixed key length. Other variable key lengths are not yet implemented.

type KeySize = U32

Key size in bytes with which cipher guaranteed to be initialized

type BlockSize = U16

Size of the block in bytes

type ParBlocks = U1

Number of blocks which can be processed in parallel by cipher implementation

fn new(key: &GenericArray<u8, U32>) -> Self

Create new block cipher instance from key with fixed size.

fn encrypt_block(&self, block: &mut GenericArray<u8, Self::BlockSize>)

Encrypt block in-place

fn decrypt_block(&self, block: &mut GenericArray<u8, Self::BlockSize>)

Decrypt block in-place

fn new_varkey(key: &[u8]) -> Result<Self, InvalidKeyLength>

Create new block cipher instance from key with variable size.

fn encrypt_blocks(
    &self,
    blocks: &mut GenericArray<GenericArray<u8, Self::BlockSize>, Self::ParBlocks>
)

Encrypt several blocks in parallel using instruction level parallelism if possible.

fn decrypt_blocks(
    &self,
    blocks: &mut GenericArray<GenericArray<u8, Self::BlockSize>, Self::ParBlocks>
)

Decrypt several blocks in parallel using instruction level parallelism if possible.