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crypto: sha256-generic - Use API partial block handling 

Use the Crypto API partial block handling.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
pull/1250/head
Herbert Xu 2025-04-18 10:59:48 +08:00
parent e6c5597bad
commit 9adeea13ed
2 changed files with 21 additions and 35 deletions
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50
crypto/sha256_generic.c
View File

@ -8,14 +8,10 @@
* SHA224 Support Copyright 2007 Intel Corporation <jonathan.lynch@intel.com> * SHA224 Support Copyright 2007 Intel Corporation <jonathan.lynch@intel.com>
*/ */
#include <crypto/internal/hash.h> #include <crypto/internal/hash.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/types.h>
#include <crypto/sha2.h> #include <crypto/sha2.h>
#include <crypto/sha256_base.h> #include <crypto/sha256_base.h>
#include <asm/byteorder.h> #include <linux/kernel.h>
#include <linux/unaligned.h> #include <linux/module.h>
const u8 sha224_zero_message_hash[SHA224_DIGEST_SIZE] = { const u8 sha224_zero_message_hash[SHA224_DIGEST_SIZE] = {
0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x2b, 0xc9, 0x47, 0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x2b, 0xc9, 0x47,
@ -33,42 +29,37 @@ const u8 sha256_zero_message_hash[SHA256_DIGEST_SIZE] = {
}; };
EXPORT_SYMBOL_GPL(sha256_zero_message_hash); EXPORT_SYMBOL_GPL(sha256_zero_message_hash);
int crypto_sha256_update(struct shash_desc *desc, const u8 *data, static void sha256_block(struct crypto_sha256_state *sctx, const u8 *input,
unsigned int len) int blocks)
{ {
sha256_update(shash_desc_ctx(desc), data, len); sha256_transform_blocks(sctx, input, blocks);
return 0;
}
EXPORT_SYMBOL(crypto_sha256_update);
static int crypto_sha256_final(struct shash_desc *desc, u8 *out)
{
if (crypto_shash_digestsize(desc->tfm) == SHA224_DIGEST_SIZE)
sha224_final(shash_desc_ctx(desc), out);
else
sha256_final(shash_desc_ctx(desc), out);
return 0;
} }
int crypto_sha256_finup(struct shash_desc *desc, const u8 *data, static int crypto_sha256_update(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *hash) unsigned int len)
{ {
sha256_update(shash_desc_ctx(desc), data, len); return sha256_base_do_update_blocks(desc, data, len, sha256_block);
return crypto_sha256_final(desc, hash); }
static int crypto_sha256_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *hash)
{
sha256_base_do_finup(desc, data, len, sha256_block);
return sha256_base_finish(desc, hash);
} }
EXPORT_SYMBOL(crypto_sha256_finup);
static struct shash_alg sha256_algs[2] = { { static struct shash_alg sha256_algs[2] = { {
.digestsize = SHA256_DIGEST_SIZE, .digestsize = SHA256_DIGEST_SIZE,
.init = sha256_base_init, .init = sha256_base_init,
.update = crypto_sha256_update, .update = crypto_sha256_update,
.final = crypto_sha256_final,
.finup = crypto_sha256_finup, .finup = crypto_sha256_finup,
.descsize = sizeof(struct sha256_state), .descsize = sizeof(struct crypto_sha256_state),
.base = { .base = {
.cra_name = "sha256", .cra_name = "sha256",
.cra_driver_name= "sha256-generic", .cra_driver_name= "sha256-generic",
.cra_priority = 100, .cra_priority = 100,
.cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY |
CRYPTO_AHASH_ALG_FINUP_MAX,
.cra_blocksize = SHA256_BLOCK_SIZE, .cra_blocksize = SHA256_BLOCK_SIZE,
.cra_module = THIS_MODULE, .cra_module = THIS_MODULE,
} }
@ -76,13 +67,14 @@ static struct shash_alg sha256_algs[2] = { {
.digestsize = SHA224_DIGEST_SIZE, .digestsize = SHA224_DIGEST_SIZE,
.init = sha224_base_init, .init = sha224_base_init,
.update = crypto_sha256_update, .update = crypto_sha256_update,
.final = crypto_sha256_final,
.finup = crypto_sha256_finup, .finup = crypto_sha256_finup,
.descsize = sizeof(struct sha256_state), .descsize = sizeof(struct crypto_sha256_state),
.base = { .base = {
.cra_name = "sha224", .cra_name = "sha224",
.cra_driver_name= "sha224-generic", .cra_driver_name= "sha224-generic",
.cra_priority = 100, .cra_priority = 100,
.cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY |
CRYPTO_AHASH_ALG_FINUP_MAX,
.cra_blocksize = SHA224_BLOCK_SIZE, .cra_blocksize = SHA224_BLOCK_SIZE,
.cra_module = THIS_MODULE, .cra_module = THIS_MODULE,
} }

6
include/crypto/sha2.h
View File

@ -83,12 +83,6 @@ struct sha512_state {
struct shash_desc; struct shash_desc;
extern int crypto_sha256_update(struct shash_desc *desc, const u8 *data,
unsigned int len);
extern int crypto_sha256_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *hash);
extern int crypto_sha512_update(struct shash_desc *desc, const u8 *data, extern int crypto_sha512_update(struct shash_desc *desc, const u8 *data,
unsigned int len); unsigned int len);