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authorStephan Mueller <smueller@chronox.de>2016-03-28 17:47:55 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2016-04-05 15:35:53 +0300
commit4218ebe8cab421c72f134cca1374e0985303f34a (patch)
tree813c3ec09204f4cd35998aaca752c22ae88beecd /drivers/memory
parentbdb6cf9f6fe6d9af905ea34b7c4bb78ea601329e (diff)
downloadlinux-4218ebe8cab421c72f134cca1374e0985303f34a.tar.xz
crypto: drbg - set HMAC key only when altered
The HMAC implementation allows setting the HMAC key independently from the hashing operation. Therefore, the key only needs to be set when a new key is generated. This patch increases the speed of the HMAC DRBG by at least 35% depending on the use case. The patch is fully CAVS tested. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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