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crypto: sm3 - export crypto_sm3_final function

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Both crypto_sm3_update and crypto_sm3_finup have been
exported, exporting crypto_sm3_final, to avoid having to
use crypto_sm3_finup(desc, NULL, 0, dgst) to calculate
the hash in some cases.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Tested-by: Xufeng Zhang <yunbo.xufeng@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tianjia Zhang 2020-09-21 00:20:54 +08:00 committed by Herbert Xu
parent d8e8876617
commit f49282870f
2 changed files with 6 additions and 3 deletions
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7
crypto/sm3_generic.c
View File

@ -149,17 +149,18 @@ int crypto_sm3_update(struct shash_desc *desc, const u8 *data,
} }
EXPORT_SYMBOL(crypto_sm3_update); EXPORT_SYMBOL(crypto_sm3_update);
static int sm3_final(struct shash_desc *desc, u8 *out) int crypto_sm3_final(struct shash_desc *desc, u8 *out)
{ {
sm3_base_do_finalize(desc, sm3_generic_block_fn); sm3_base_do_finalize(desc, sm3_generic_block_fn);
return sm3_base_finish(desc, out); return sm3_base_finish(desc, out);
} }
EXPORT_SYMBOL(crypto_sm3_final);
int crypto_sm3_finup(struct shash_desc *desc, const u8 *data, int crypto_sm3_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *hash) unsigned int len, u8 *hash)
{ {
sm3_base_do_update(desc, data, len, sm3_generic_block_fn); sm3_base_do_update(desc, data, len, sm3_generic_block_fn);
return sm3_final(desc, hash); return crypto_sm3_final(desc, hash);
} }
EXPORT_SYMBOL(crypto_sm3_finup); EXPORT_SYMBOL(crypto_sm3_finup);
@ -167,7 +168,7 @@ static struct shash_alg sm3_alg = {
.digestsize = SM3_DIGEST_SIZE, .digestsize = SM3_DIGEST_SIZE,
.init = sm3_base_init, .init = sm3_base_init,
.update = crypto_sm3_update, .update = crypto_sm3_update,
.final = sm3_final, .final = crypto_sm3_final,
.finup = crypto_sm3_finup, .finup = crypto_sm3_finup,
.descsize = sizeof(struct sm3_state), .descsize = sizeof(struct sm3_state),
.base = { .base = {

2
include/crypto/sm3.h
View File

@ -35,6 +35,8 @@ struct shash_desc;
extern int crypto_sm3_update(struct shash_desc *desc, const u8 *data, extern int crypto_sm3_update(struct shash_desc *desc, const u8 *data,
unsigned int len); unsigned int len);
extern int crypto_sm3_final(struct shash_desc *desc, u8 *out);
extern int crypto_sm3_finup(struct shash_desc *desc, const u8 *data, extern int crypto_sm3_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *hash); unsigned int len, u8 *hash);
#endif #endif