Trait magma::BlockCipher [−] [src]

pub trait BlockCipher {
    type KeySize: ArrayLength<u8>;
    type BlockSize: ArrayLength<u8>;
    type ParBlocks: ArrayLength<GenericArray<u8, Self::BlockSize>>;
    fn new(key: &GenericArray<u8, Self::KeySize>) -> Self;

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

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

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

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

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

The trait which defines in-place encryption and decryption over single block or several blocks in parallel.

Associated Types

Key size in bytes with which cipher guaranteed to be initialized

Size of the block in bytes

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

Required Methods

Create new block cipher instance from key with fixed size.

Encrypt block in-place

Decrypt block in-place

Provided Methods

Create new block cipher instance from key with variable size.

Default implementation will accept only keys with length equal to KeySize, but some ciphers can accept range of key lengths.

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

If ParBlocks equals to 1 it's equivalent to encrypt_block.

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

If ParBlocks equals to 1 it's equivalent to decrypt_block.

Implementors