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-rw-r--r--crypto/sha512_generic.c127
1 files changed, 67 insertions, 60 deletions
diff --git a/crypto/sha512_generic.c b/crypto/sha512_generic.c
index bc3686138aeb..3bea38d12242 100644
--- a/crypto/sha512_generic.c
+++ b/crypto/sha512_generic.c
@@ -10,7 +10,7 @@
* later version.
*
*/
-
+#include <crypto/internal/hash.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mm.h>
@@ -18,16 +18,17 @@
#include <linux/crypto.h>
#include <linux/types.h>
#include <crypto/sha.h>
-
+#include <linux/percpu.h>
#include <asm/byteorder.h>
struct sha512_ctx {
u64 state[8];
u32 count[4];
u8 buf[128];
- u64 W[80];
};
+static DEFINE_PER_CPU(u64[80], msg_schedule);
+
static inline u64 Ch(u64 x, u64 y, u64 z)
{
return z ^ (x & (y ^ z));
@@ -89,11 +90,12 @@ static inline void BLEND_OP(int I, u64 *W)
}
static void
-sha512_transform(u64 *state, u64 *W, const u8 *input)
+sha512_transform(u64 *state, const u8 *input)
{
u64 a, b, c, d, e, f, g, h, t1, t2;
int i;
+ u64 *W = get_cpu_var(msg_schedule);
/* load the input */
for (i = 0; i < 16; i++)
@@ -132,12 +134,14 @@ sha512_transform(u64 *state, u64 *W, const u8 *input)
/* erase our data */
a = b = c = d = e = f = g = h = t1 = t2 = 0;
+ memset(W, 0, sizeof(__get_cpu_var(msg_schedule)));
+ put_cpu_var(msg_schedule);
}
-static void
-sha512_init(struct crypto_tfm *tfm)
+static int
+sha512_init(struct shash_desc *desc)
{
- struct sha512_ctx *sctx = crypto_tfm_ctx(tfm);
+ struct sha512_ctx *sctx = shash_desc_ctx(desc);
sctx->state[0] = SHA512_H0;
sctx->state[1] = SHA512_H1;
sctx->state[2] = SHA512_H2;
@@ -147,12 +151,14 @@ sha512_init(struct crypto_tfm *tfm)
sctx->state[6] = SHA512_H6;
sctx->state[7] = SHA512_H7;
sctx->count[0] = sctx->count[1] = sctx->count[2] = sctx->count[3] = 0;
+
+ return 0;
}
-static void
-sha384_init(struct crypto_tfm *tfm)
+static int
+sha384_init(struct shash_desc *desc)
{
- struct sha512_ctx *sctx = crypto_tfm_ctx(tfm);
+ struct sha512_ctx *sctx = shash_desc_ctx(desc);
sctx->state[0] = SHA384_H0;
sctx->state[1] = SHA384_H1;
sctx->state[2] = SHA384_H2;
@@ -162,12 +168,14 @@ sha384_init(struct crypto_tfm *tfm)
sctx->state[6] = SHA384_H6;
sctx->state[7] = SHA384_H7;
sctx->count[0] = sctx->count[1] = sctx->count[2] = sctx->count[3] = 0;
+
+ return 0;
}
-static void
-sha512_update(struct crypto_tfm *tfm, const u8 *data, unsigned int len)
+static int
+sha512_update(struct shash_desc *desc, const u8 *data, unsigned int len)
{
- struct sha512_ctx *sctx = crypto_tfm_ctx(tfm);
+ struct sha512_ctx *sctx = shash_desc_ctx(desc);
unsigned int i, index, part_len;
@@ -187,10 +195,10 @@ sha512_update(struct crypto_tfm *tfm, const u8 *data, unsigned int len)
/* Transform as many times as possible. */
if (len >= part_len) {
memcpy(&sctx->buf[index], data, part_len);
- sha512_transform(sctx->state, sctx->W, sctx->buf);
+ sha512_transform(sctx->state, sctx->buf);
for (i = part_len; i + 127 < len; i+=128)
- sha512_transform(sctx->state, sctx->W, &data[i]);
+ sha512_transform(sctx->state, &data[i]);
index = 0;
} else {
@@ -200,14 +208,13 @@ sha512_update(struct crypto_tfm *tfm, const u8 *data, unsigned int len)
/* Buffer remaining input */
memcpy(&sctx->buf[index], &data[i], len - i);
- /* erase our data */
- memset(sctx->W, 0, sizeof(sctx->W));
+ return 0;
}
-static void
-sha512_final(struct crypto_tfm *tfm, u8 *hash)
+static int
+sha512_final(struct shash_desc *desc, u8 *hash)
{
- struct sha512_ctx *sctx = crypto_tfm_ctx(tfm);
+ struct sha512_ctx *sctx = shash_desc_ctx(desc);
static u8 padding[128] = { 0x80, };
__be64 *dst = (__be64 *)hash;
__be32 bits[4];
@@ -223,10 +230,10 @@ sha512_final(struct crypto_tfm *tfm, u8 *hash)
/* Pad out to 112 mod 128. */
index = (sctx->count[0] >> 3) & 0x7f;
pad_len = (index < 112) ? (112 - index) : ((128+112) - index);
- sha512_update(tfm, padding, pad_len);
+ sha512_update(desc, padding, pad_len);
/* Append length (before padding) */
- sha512_update(tfm, (const u8 *)bits, sizeof(bits));
+ sha512_update(desc, (const u8 *)bits, sizeof(bits));
/* Store state in digest */
for (i = 0; i < 8; i++)
@@ -234,66 +241,66 @@ sha512_final(struct crypto_tfm *tfm, u8 *hash)
/* Zeroize sensitive information. */
memset(sctx, 0, sizeof(struct sha512_ctx));
+
+ return 0;
}
-static void sha384_final(struct crypto_tfm *tfm, u8 *hash)
+static int sha384_final(struct shash_desc *desc, u8 *hash)
{
- u8 D[64];
+ u8 D[64];
+
+ sha512_final(desc, D);
- sha512_final(tfm, D);
+ memcpy(hash, D, 48);
+ memset(D, 0, 64);
- memcpy(hash, D, 48);
- memset(D, 0, 64);
+ return 0;
}
-static struct crypto_alg sha512 = {
- .cra_name = "sha512",
- .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
- .cra_blocksize = SHA512_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct sha512_ctx),
- .cra_module = THIS_MODULE,
- .cra_alignmask = 3,
- .cra_list = LIST_HEAD_INIT(sha512.cra_list),
- .cra_u = { .digest = {
- .dia_digestsize = SHA512_DIGEST_SIZE,
- .dia_init = sha512_init,
- .dia_update = sha512_update,
- .dia_final = sha512_final }
- }
+static struct shash_alg sha512 = {
+ .digestsize = SHA512_DIGEST_SIZE,
+ .init = sha512_init,
+ .update = sha512_update,
+ .final = sha512_final,
+ .descsize = sizeof(struct sha512_ctx),
+ .base = {
+ .cra_name = "sha512",
+ .cra_flags = CRYPTO_ALG_TYPE_SHASH,
+ .cra_blocksize = SHA512_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
};
-static struct crypto_alg sha384 = {
- .cra_name = "sha384",
- .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
- .cra_blocksize = SHA384_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct sha512_ctx),
- .cra_alignmask = 3,
- .cra_module = THIS_MODULE,
- .cra_list = LIST_HEAD_INIT(sha384.cra_list),
- .cra_u = { .digest = {
- .dia_digestsize = SHA384_DIGEST_SIZE,
- .dia_init = sha384_init,
- .dia_update = sha512_update,
- .dia_final = sha384_final }
- }
+static struct shash_alg sha384 = {
+ .digestsize = SHA384_DIGEST_SIZE,
+ .init = sha384_init,
+ .update = sha512_update,
+ .final = sha384_final,
+ .descsize = sizeof(struct sha512_ctx),
+ .base = {
+ .cra_name = "sha384",
+ .cra_flags = CRYPTO_ALG_TYPE_SHASH,
+ .cra_blocksize = SHA384_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
};
static int __init sha512_generic_mod_init(void)
{
int ret = 0;
- if ((ret = crypto_register_alg(&sha384)) < 0)
+ if ((ret = crypto_register_shash(&sha384)) < 0)
goto out;
- if ((ret = crypto_register_alg(&sha512)) < 0)
- crypto_unregister_alg(&sha384);
+ if ((ret = crypto_register_shash(&sha512)) < 0)
+ crypto_unregister_shash(&sha384);
out:
return ret;
}
static void __exit sha512_generic_mod_fini(void)
{
- crypto_unregister_alg(&sha384);
- crypto_unregister_alg(&sha512);
+ crypto_unregister_shash(&sha384);
+ crypto_unregister_shash(&sha512);
}
module_init(sha512_generic_mod_init);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 06:59:42 +0000