From bbbee4679afd7c29a58087f133ffe241597f3144 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Sat, 11 Jul 2009 18:16:16 +0800 Subject: crypto: padlock - Switch sha to shash This patch converts the padlock-sha implementation to shash. In doing so the existing mechanism of storing the data until final is no longer viable as we do not have a way of allocating data in crypto_shash_init and then reliably freeing it. This is just as well because a better way of handling the problem is to hash everything but the last chunk using normal sha code and then provide the intermediate result to the padlock device. This is good enough because the primary application of padlock-sha is IPsec and there the data is laid out in the form of an hmac header followed by the rest of the packet. In essence we can provide all the data to the padlock as the hmac header only needs to be hashed once. Signed-off-by: Herbert Xu --- drivers/crypto/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/crypto/Kconfig') diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig index 5b27692..1bb4b7fe 100644 --- a/drivers/crypto/Kconfig +++ b/drivers/crypto/Kconfig @@ -13,7 +13,6 @@ if CRYPTO_HW config CRYPTO_DEV_PADLOCK tristate "Support for VIA PadLock ACE" depends on X86 && !UML - select CRYPTO_ALGAPI help Some VIA processors come with an integrated crypto engine (so called VIA PadLock ACE, Advanced Cryptography Engine) @@ -39,6 +38,7 @@ config CRYPTO_DEV_PADLOCK_AES config CRYPTO_DEV_PADLOCK_SHA tristate "PadLock driver for SHA1 and SHA256 algorithms" depends on CRYPTO_DEV_PADLOCK + select CRYPTO_HASH select CRYPTO_SHA1 select CRYPTO_SHA256 help -- cgit v1.1