• Herbert Xu's avatar
    crypto: hash - Add shash interface · 7b5a080b
    Herbert Xu authored
    The shash interface replaces the current synchronous hash interface.
    It improves over hash in two ways.  Firstly shash is reentrant,
    meaning that the same tfm may be used by two threads simultaneously
    as all hashing state is stored in a local descriptor.
    
    The other enhancement is that shash no longer takes scatter list
    entries.  This is because shash is specifically designed for
    synchronous algorithms and as such scatter lists are unnecessary.
    
    All existing hash users will be converted to shash once the
    algorithms have been completely converted.
    
    There is also a new finup function that combines update with final.
    This will be extended to ahash once the algorithm conversion is
    done.
    
    This is also the first time that an algorithm type has their own
    registration function.  Existing algorithm types will be converted
    to this way in due course.
    Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
    7b5a080b
shash.c 6.76 KB