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crypto: sha256 - Remove sha256/224_init code duplication 

lib/crypto/sha256.c and include/crypto/sha256_base.h define
99% identical functions to init a sha256_state struct for sha224 or
sha256 use.

This commit moves the functions from lib/crypto/sha256.c to
include/crypto/sha.h (making them static inline) and makes the
sha224/256_base_init static inline functions from
include/crypto/sha256_base.h wrappers around the now also
static inline include/crypto/sha.h functions.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Hans de Goede 2019-09-01 22:35:32 +02:00 committed by Herbert Xu
parent 34d6245fbc
commit c75c66bbaa
3 changed files with 30 additions and 56 deletions
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30
include/crypto/sha.h
View File

@ -123,12 +123,38 @@ extern int crypto_sha512_finup(struct shash_desc *desc, const u8 *data,
* For details see lib/crypto/sha256.c * For details see lib/crypto/sha256.c
*/ */
extern int sha256_init(struct sha256_state *sctx); static inline int sha256_init(struct sha256_state *sctx)
{
sctx->state[0] = SHA256_H0;
sctx->state[1] = SHA256_H1;
sctx->state[2] = SHA256_H2;
sctx->state[3] = SHA256_H3;
sctx->state[4] = SHA256_H4;
sctx->state[5] = SHA256_H5;
sctx->state[6] = SHA256_H6;
sctx->state[7] = SHA256_H7;
sctx->count = 0;
return 0;
}
extern int sha256_update(struct sha256_state *sctx, const u8 *input, extern int sha256_update(struct sha256_state *sctx, const u8 *input,
unsigned int length); unsigned int length);
extern int sha256_final(struct sha256_state *sctx, u8 *hash); extern int sha256_final(struct sha256_state *sctx, u8 *hash);
extern int sha224_init(struct sha256_state *sctx); static inline int sha224_init(struct sha256_state *sctx)
{
sctx->state[0] = SHA224_H0;
sctx->state[1] = SHA224_H1;
sctx->state[2] = SHA224_H2;
sctx->state[3] = SHA224_H3;
sctx->state[4] = SHA224_H4;
sctx->state[5] = SHA224_H5;
sctx->state[6] = SHA224_H6;
sctx->state[7] = SHA224_H7;
sctx->count = 0;
return 0;
}
extern int sha224_update(struct sha256_state *sctx, const u8 *input, extern int sha224_update(struct sha256_state *sctx, const u8 *input,
unsigned int length); unsigned int length);
extern int sha224_final(struct sha256_state *sctx, u8 *hash); extern int sha224_final(struct sha256_state *sctx, u8 *hash);

24
include/crypto/sha256_base.h
View File

@ -22,34 +22,14 @@ static inline int sha224_base_init(struct shash_desc *desc)
{ {
struct sha256_state *sctx = shash_desc_ctx(desc); struct sha256_state *sctx = shash_desc_ctx(desc);
sctx->state[0] = SHA224_H0; return sha224_init(sctx);
sctx->state[1] = SHA224_H1;
sctx->state[2] = SHA224_H2;
sctx->state[3] = SHA224_H3;
sctx->state[4] = SHA224_H4;
sctx->state[5] = SHA224_H5;
sctx->state[6] = SHA224_H6;
sctx->state[7] = SHA224_H7;
sctx->count = 0;
return 0;
} }
static inline int sha256_base_init(struct shash_desc *desc) static inline int sha256_base_init(struct shash_desc *desc)
{ {
struct sha256_state *sctx = shash_desc_ctx(desc); struct sha256_state *sctx = shash_desc_ctx(desc);
sctx->state[0] = SHA256_H0; return sha256_init(sctx);
sctx->state[1] = SHA256_H1;
sctx->state[2] = SHA256_H2;
sctx->state[3] = SHA256_H3;
sctx->state[4] = SHA256_H4;
sctx->state[5] = SHA256_H5;
sctx->state[6] = SHA256_H6;
sctx->state[7] = SHA256_H7;
sctx->count = 0;
return 0;
} }
static inline int sha256_base_do_update(struct shash_desc *desc, static inline int sha256_base_do_update(struct shash_desc *desc,

32
lib/crypto/sha256.c
View File

@ -206,38 +206,6 @@ static void sha256_transform(u32 *state, const u8 *input)
memzero_explicit(W, 64 * sizeof(u32)); memzero_explicit(W, 64 * sizeof(u32));
} }
int sha256_init(struct sha256_state *sctx)
{
sctx->state[0] = SHA256_H0;
sctx->state[1] = SHA256_H1;
sctx->state[2] = SHA256_H2;
sctx->state[3] = SHA256_H3;
sctx->state[4] = SHA256_H4;
sctx->state[5] = SHA256_H5;
sctx->state[6] = SHA256_H6;
sctx->state[7] = SHA256_H7;
sctx->count = 0;
return 0;
}
EXPORT_SYMBOL(sha256_init);
int sha224_init(struct sha256_state *sctx)
{
sctx->state[0] = SHA224_H0;
sctx->state[1] = SHA224_H1;
sctx->state[2] = SHA224_H2;
sctx->state[3] = SHA224_H3;
sctx->state[4] = SHA224_H4;
sctx->state[5] = SHA224_H5;
sctx->state[6] = SHA224_H6;
sctx->state[7] = SHA224_H7;
sctx->count = 0;
return 0;
}
EXPORT_SYMBOL(sha224_init);
int sha256_update(struct sha256_state *sctx, const u8 *data, unsigned int len) int sha256_update(struct sha256_state *sctx, const u8 *data, unsigned int len)
{ {
unsigned int partial, done; unsigned int partial, done;