crypto: sha256 - Switch to shash
This patch changes sha256 and sha224 to the new shash interface.
Signed-off-by: Adrian-Ken Rueegsegger <ken@codelabs.ch>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 989304c..3d04fa8 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -357,7 +357,7 @@
config CRYPTO_SHA256
tristate "SHA224 and SHA256 digest algorithm"
- select CRYPTO_ALGAPI
+ select CRYPTO_HASH
help
SHA256 secure hash standard (DFIPS 180-2).
diff --git a/crypto/sha256_generic.c b/crypto/sha256_generic.c
index 5a8dd47..caa3542 100644
--- a/crypto/sha256_generic.c
+++ b/crypto/sha256_generic.c
@@ -17,10 +17,10 @@
* any later version.
*
*/
+#include <crypto/internal/hash.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
-#include <linux/crypto.h>
#include <linux/types.h>
#include <crypto/sha.h>
#include <asm/byteorder.h>
@@ -69,7 +69,7 @@
/* now blend */
for (i = 16; i < 64; i++)
BLEND_OP(i, W);
-
+
/* load the state into our registers */
a=state[0]; b=state[1]; c=state[2]; d=state[3];
e=state[4]; f=state[5]; g=state[6]; h=state[7];
@@ -220,9 +220,9 @@
}
-static void sha224_init(struct crypto_tfm *tfm)
+static int sha224_init(struct shash_desc *desc)
{
- struct sha256_ctx *sctx = crypto_tfm_ctx(tfm);
+ struct sha256_ctx *sctx = shash_desc_ctx(desc);
sctx->state[0] = SHA224_H0;
sctx->state[1] = SHA224_H1;
sctx->state[2] = SHA224_H2;
@@ -233,11 +233,13 @@
sctx->state[7] = SHA224_H7;
sctx->count[0] = 0;
sctx->count[1] = 0;
+
+ return 0;
}
-static void sha256_init(struct crypto_tfm *tfm)
+static int sha256_init(struct shash_desc *desc)
{
- struct sha256_ctx *sctx = crypto_tfm_ctx(tfm);
+ struct sha256_ctx *sctx = shash_desc_ctx(desc);
sctx->state[0] = SHA256_H0;
sctx->state[1] = SHA256_H1;
sctx->state[2] = SHA256_H2;
@@ -247,12 +249,14 @@
sctx->state[6] = SHA256_H6;
sctx->state[7] = SHA256_H7;
sctx->count[0] = sctx->count[1] = 0;
+
+ return 0;
}
-static void sha256_update(struct crypto_tfm *tfm, const u8 *data,
+static int sha256_update(struct shash_desc *desc, const u8 *data,
unsigned int len)
{
- struct sha256_ctx *sctx = crypto_tfm_ctx(tfm);
+ struct sha256_ctx *sctx = shash_desc_ctx(desc);
unsigned int i, index, part_len;
/* Compute number of bytes mod 128 */
@@ -277,14 +281,16 @@
} else {
i = 0;
}
-
+
/* Buffer remaining input */
memcpy(&sctx->buf[index], &data[i], len-i);
+
+ return 0;
}
-static void sha256_final(struct crypto_tfm *tfm, u8 *out)
+static int sha256_final(struct shash_desc *desc, u8 *out)
{
- struct sha256_ctx *sctx = crypto_tfm_ctx(tfm);
+ struct sha256_ctx *sctx = shash_desc_ctx(desc);
__be32 *dst = (__be32 *)out;
__be32 bits[2];
unsigned int index, pad_len;
@@ -298,10 +304,10 @@
/* Pad out to 56 mod 64. */
index = (sctx->count[0] >> 3) & 0x3f;
pad_len = (index < 56) ? (56 - index) : ((64+56) - index);
- sha256_update(tfm, padding, pad_len);
+ sha256_update(desc, padding, pad_len);
/* Append length (before padding) */
- sha256_update(tfm, (const u8 *)bits, sizeof(bits));
+ sha256_update(desc, (const u8 *)bits, sizeof(bits));
/* Store state in digest */
for (i = 0; i < 8; i++)
@@ -309,71 +315,73 @@
/* Zeroize sensitive information. */
memset(sctx, 0, sizeof(*sctx));
+
+ return 0;
}
-static void sha224_final(struct crypto_tfm *tfm, u8 *hash)
+static int sha224_final(struct shash_desc *desc, u8 *hash)
{
u8 D[SHA256_DIGEST_SIZE];
- sha256_final(tfm, D);
+ sha256_final(desc, D);
memcpy(hash, D, SHA224_DIGEST_SIZE);
memset(D, 0, SHA256_DIGEST_SIZE);
+
+ return 0;
}
-static struct crypto_alg sha256 = {
- .cra_name = "sha256",
- .cra_driver_name= "sha256-generic",
- .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
- .cra_blocksize = SHA256_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct sha256_ctx),
- .cra_module = THIS_MODULE,
- .cra_alignmask = 3,
- .cra_list = LIST_HEAD_INIT(sha256.cra_list),
- .cra_u = { .digest = {
- .dia_digestsize = SHA256_DIGEST_SIZE,
- .dia_init = sha256_init,
- .dia_update = sha256_update,
- .dia_final = sha256_final } }
+static struct shash_alg sha256 = {
+ .digestsize = SHA256_DIGEST_SIZE,
+ .init = sha256_init,
+ .update = sha256_update,
+ .final = sha256_final,
+ .descsize = sizeof(struct sha256_ctx),
+ .base = {
+ .cra_name = "sha256",
+ .cra_driver_name= "sha256-generic",
+ .cra_flags = CRYPTO_ALG_TYPE_SHASH,
+ .cra_blocksize = SHA256_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
};
-static struct crypto_alg sha224 = {
- .cra_name = "sha224",
- .cra_driver_name = "sha224-generic",
- .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
- .cra_blocksize = SHA224_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct sha256_ctx),
- .cra_module = THIS_MODULE,
- .cra_alignmask = 3,
- .cra_list = LIST_HEAD_INIT(sha224.cra_list),
- .cra_u = { .digest = {
- .dia_digestsize = SHA224_DIGEST_SIZE,
- .dia_init = sha224_init,
- .dia_update = sha256_update,
- .dia_final = sha224_final } }
+static struct shash_alg sha224 = {
+ .digestsize = SHA224_DIGEST_SIZE,
+ .init = sha224_init,
+ .update = sha256_update,
+ .final = sha224_final,
+ .descsize = sizeof(struct sha256_ctx),
+ .base = {
+ .cra_name = "sha224",
+ .cra_driver_name= "sha224-generic",
+ .cra_flags = CRYPTO_ALG_TYPE_SHASH,
+ .cra_blocksize = SHA224_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
};
static int __init sha256_generic_mod_init(void)
{
int ret = 0;
- ret = crypto_register_alg(&sha224);
+ ret = crypto_register_shash(&sha224);
if (ret < 0)
return ret;
- ret = crypto_register_alg(&sha256);
+ ret = crypto_register_shash(&sha256);
if (ret < 0)
- crypto_unregister_alg(&sha224);
+ crypto_unregister_shash(&sha224);
return ret;
}
static void __exit sha256_generic_mod_fini(void)
{
- crypto_unregister_alg(&sha224);
- crypto_unregister_alg(&sha256);
+ crypto_unregister_shash(&sha224);
+ crypto_unregister_shash(&sha256);
}
module_init(sha256_generic_mod_init);