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powerpc: Add a powerpc implementation of SHA-1

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This patch adds a crypto driver which provides a powerpc accelerated
implementation of SHA-1, accelerated in that it is written in asm.

Original patch by Paul, minor fixups for upstream by moi.

Lightly tested on 64-bit with the test program here:

 http://michael.ellerman.id.au/files/junkcode/sha1test.c

Seems to work, and is "not slower" than the generic version.

Needs testing on 32-bit.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Ellerman
2012-09-13 23:00:49 +00:00
committed by Benjamin Herrenschmidt
parent 5c49985c21
commit 323a6bf1d6
5 changed files with 353 additions and 0 deletions
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7
crypto/Kconfig
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@ -479,6 +479,13 @@ config CRYPTO_SHA1_ARM
SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
using optimized ARM assembler.
config CRYPTO_SHA1_PPC
tristate "SHA1 digest algorithm (powerpc)"
depends on PPC
help
This is the powerpc hardware accelerated implementation of the
SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
config CRYPTO_SHA256
tristate "SHA224 and SHA256 digest algorithm"
select CRYPTO_HASH