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authorHerbert Xu <herbert@gondor.apana.org.au>2009-07-11 14:16:16 +0400
committerHerbert Xu <herbert@gondor.apana.org.au>2009-07-14 08:58:02 +0400
commitbbbee4679afd7c29a58087f133ffe241597f3144 (patch)
treeb49da1e7b303948fc1d39580df375071c1703494 /crypto/hmac.c
parent113adefc73c291f93f875fe515a46d8f76252fff (diff)
downloadlinux-bbbee4679afd7c29a58087f133ffe241597f3144.tar.xz
crypto: padlock - Switch sha to shash
This patch converts the padlock-sha implementation to shash. In doing so the existing mechanism of storing the data until final is no longer viable as we do not have a way of allocating data in crypto_shash_init and then reliably freeing it. This is just as well because a better way of handling the problem is to hash everything but the last chunk using normal sha code and then provide the intermediate result to the padlock device. This is good enough because the primary application of padlock-sha is IPsec and there the data is laid out in the form of an hmac header followed by the rest of the packet. In essence we can provide all the data to the padlock as the hmac header only needs to be hashed once. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/hmac.c')
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