From 7c390170b49337477985be7a624015160ffeb056 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Thu, 4 Aug 2011 20:19:24 +0200 Subject: crypto: sha1 - export sha1_update for reuse Export the update function as crypto_sha1_update() to not have the need to reimplement the same algorithm for each SHA-1 implementation. This way the generic SHA-1 implementation can be used as fallback for other implementations that fail to run under certain circumstances, like the need for an FPU context while executing in IRQ context. Signed-off-by: Mathias Krause Signed-off-by: Herbert Xu --- crypto/sha1_generic.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'crypto') diff --git a/crypto/sha1_generic.c b/crypto/sha1_generic.c index 00ae60eb925..42794803c48 100644 --- a/crypto/sha1_generic.c +++ b/crypto/sha1_generic.c @@ -36,7 +36,7 @@ static int sha1_init(struct shash_desc *desc) return 0; } -static int sha1_update(struct shash_desc *desc, const u8 *data, +int crypto_sha1_update(struct shash_desc *desc, const u8 *data, unsigned int len) { struct sha1_state *sctx = shash_desc_ctx(desc); @@ -71,6 +71,7 @@ static int sha1_update(struct shash_desc *desc, const u8 *data, return 0; } +EXPORT_SYMBOL(crypto_sha1_update); /* Add padding and return the message digest. */ @@ -87,10 +88,10 @@ static int sha1_final(struct shash_desc *desc, u8 *out) /* Pad out to 56 mod 64 */ index = sctx->count & 0x3f; padlen = (index < 56) ? (56 - index) : ((64+56) - index); - sha1_update(desc, padding, padlen); + crypto_sha1_update(desc, padding, padlen); /* Append length */ - sha1_update(desc, (const u8 *)&bits, sizeof(bits)); + crypto_sha1_update(desc, (const u8 *)&bits, sizeof(bits)); /* Store state in digest */ for (i = 0; i < 5; i++) @@ -121,7 +122,7 @@ static int sha1_import(struct shash_desc *desc, const void *in) static struct shash_alg alg = { .digestsize = SHA1_DIGEST_SIZE, .init = sha1_init, - .update = sha1_update, + .update = crypto_sha1_update, .final = sha1_final, .export = sha1_export, .import = sha1_import, -- cgit v1.2.3-70-g09d2