From f592682f9fca18d336ac068a1abc8507b4a1d936 Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Wed, 22 Jul 2009 12:37:06 +0800
Subject: [PATCH] crypto: shash - Require all algorithms to support
 export/import

This patch provides a default export/import function for all
shash algorithms.  It simply copies the descriptor context as
is done by sha1_generic.

This in essence means that all existing shash algorithms now
support export/import.  This is something that will be depended
upon in implementations such as hmac.  Therefore all new shash
and ahash implementations must support export/import.

For those that cannot obtain a partial result, padlock-sha's
fallback model should be used so that a partial result is always
available.

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