• Herbert Xu's avatar
    [CRYPTO] cipher: Added block cipher type · 5cde0af2
    Herbert Xu authored
    
    
    This patch adds the new type of block ciphers.  Unlike current cipher
    algorithms which operate on a single block at a time, block ciphers
    operate on an arbitrarily long linear area of data.  As it is block-based,
    it will skip any data remaining at the end which cannot form a block.
    
    The block cipher has one major difference when compared to the existing
    block cipher implementation.  The sg walking is now performed by the
    algorithm rather than the cipher mid-layer.  This is needed for drivers
    that directly support sg lists.  It also improves performance for all
    algorithms as it reduces the total number of indirect calls by one.
    
    In future the existing cipher algorithm will be converted to only have
    a single-block interface.  This will be done after all existing users
    have switched over to the new block cipher type.
    
    Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
    5cde0af2