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Commit 35d2c9d0 authored by Tim Chen's avatar Tim Chen Committed by Herbert Xu
Browse files

crypto: sha256 - Expose SHA256 generic routine to be callable externally.



Other SHA256 routine may need to use the generic routine when
FPU is not available.

Signed-off-by: default avatarTim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 873b9caf
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+6 −5
Original line number Diff line number Diff line
@@ -246,7 +246,7 @@ static int sha256_init(struct shash_desc *desc)
	return 0;
}

static int sha256_update(struct shash_desc *desc, const u8 *data,
int crypto_sha256_update(struct shash_desc *desc, const u8 *data,
			  unsigned int len)
{
	struct sha256_state *sctx = shash_desc_ctx(desc);
@@ -277,6 +277,7 @@ static int sha256_update(struct shash_desc *desc, const u8 *data,

	return 0;
}
EXPORT_SYMBOL(crypto_sha256_update);

static int sha256_final(struct shash_desc *desc, u8 *out)
{
@@ -293,10 +294,10 @@ static int sha256_final(struct shash_desc *desc, u8 *out)
	/* Pad out to 56 mod 64. */
	index = sctx->count & 0x3f;
	pad_len = (index < 56) ? (56 - index) : ((64+56) - index);
	sha256_update(desc, padding, pad_len);
	crypto_sha256_update(desc, padding, pad_len);

	/* Append length (before padding) */
	sha256_update(desc, (const u8 *)&bits, sizeof(bits));
	crypto_sha256_update(desc, (const u8 *)&bits, sizeof(bits));

	/* Store state in digest */
	for (i = 0; i < 8; i++)
@@ -339,7 +340,7 @@ static int sha256_import(struct shash_desc *desc, const void *in)
static struct shash_alg sha256_algs[2] = { {
	.digestsize	=	SHA256_DIGEST_SIZE,
	.init		=	sha256_init,
	.update		=	sha256_update,
	.update		=	crypto_sha256_update,
	.final		=	sha256_final,
	.export		=	sha256_export,
	.import		=	sha256_import,
@@ -355,7 +356,7 @@ static struct shash_alg sha256_algs[2] = { {
}, {
	.digestsize	=	SHA224_DIGEST_SIZE,
	.init		=	sha224_init,
	.update		=	sha256_update,
	.update		=	crypto_sha256_update,
	.final		=	sha224_final,
	.descsize	=	sizeof(struct sha256_state),
	.base		=	{
+2 −0
Original line number Diff line number Diff line
@@ -87,4 +87,6 @@ struct shash_desc;
extern int crypto_sha1_update(struct shash_desc *desc, const u8 *data,
			      unsigned int len);

extern int crypto_sha256_update(struct shash_desc *desc, const u8 *data,
			      unsigned int len);
#endif