From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue, 20 Nov 2007 09:26:06 +0000 (+0800)
Subject: [CRYPTO] api: Add crypto_inc and crypto_xor
X-Git-Tag: v2.6.25-rc1~1242^2~92
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7613636def82092a5c7b6322078a2af832410417;p=pandora-kernel.git

[CRYPTO] api: Add crypto_inc and crypto_xor

With the addition of more stream ciphers we need to curb the proliferation
of ad-hoc xor functions.  This patch creates a generic pair of functions,
crypto_inc and crypto_xor which does big-endian increment and exclusive or,
respectively.

For optimum performance, they both use u32 operations so alignment must be
as that of u32 even though the arguments are of type u8 *.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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