• Eric Biggers's avatar
    crypto: skcipher - remove the "blkcipher" algorithm type · c65058b7
    Eric Biggers authored
    Now that all "blkcipher" algorithms have been converted to "skcipher",
    remove the blkcipher algorithm type.
    
    The skcipher (symmetric key cipher) algorithm type was introduced a few
    years ago to replace both blkcipher and ablkcipher (synchronous and
    asynchronous block cipher).  The advantages of skcipher include:
    
      - A much less confusing name, since none of these algorithm types have
        ever actually been for raw block ciphers, but rather for all
        length-preserving encryption modes including block cipher modes of
        operation, stream ciphers, and other length-preserving modes.
    
      - It unified blkcipher and ablkcipher into a single algorithm type
        which supports both synchronous and asynchronous implementations.
        Note, blkcipher already operated only on scatterlists, so the fact
        that skcipher does too isn't a regression in functionality.
    
      - Better type safety by using struct skcipher_alg, struct
        crypto_skcipher, etc. instead of crypto_alg, crypto_tfm, etc.
    
      - It sometimes simplifies the implementations of algorithms.
    
    Also, the blkcipher API was no longer being tested.
    Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
    Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
    c65058b7
api-skcipher.rst 2.1 KB