path: root/drivers
diff options
authorHerbert Xu <herbert@gondor.apana.org.au>2006-08-22 00:07:53 +1000
committerHerbert Xu <herbert@gondor.apana.org.au>2006-09-21 11:41:52 +1000
commit5cde0af2a9825dd1edaca233bd9590566579ef21 (patch)
treee396297e3a2436d4a6ac77de63f95f2328c7a0fe /drivers
parent[CRYPTO] scatterwalk: Prepare for block ciphers (diff)
[CRYPTO] cipher: Added block cipher type
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: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers')
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