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crypto: ccp - Move HMAC calculation down to ccp ops file

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Move the support to perform an HMAC calculation into
the CCP operations file.  This eliminates the need to
perform a synchronous SHA operation used to calculate
the HMAC.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tom Lendacky 2014-01-24 16:18:02 -06:00 • committed by Herbert Xu
parent d81ed6534f
commit c11baa02c5
4 changed files with 139 additions and 110 deletions
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7
include/linux/ccp.h
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@ -232,6 +232,9 @@ enum ccp_sha_type {
* @ctx_len: length in bytes of hash value
* @src: data to be used for this operation
* @src_len: length in bytes of data used for this operation
* @opad: data to be used for final HMAC operation
* @opad_len: length in bytes of data used for final HMAC operation
* @first: indicates first SHA operation
* @final: indicates final SHA operation
* @msg_bits: total length of the message in bits used in final SHA operation
*
@ -251,6 +254,10 @@ struct ccp_sha_engine {
struct scatterlist *src;
u64 src_len; /* In bytes */
struct scatterlist *opad;
u32 opad_len; /* In bytes */
u32 first; /* Indicates first sha cmd */
u32 final; /* Indicates final sha cmd */
u64 msg_bits; /* Message length in bits required for
* final sha cmd */