@@ -14,15 +14,12 @@
* SHA224 Support Copyright 2007 Intel Corporation <jonathan.lynch@intel.com>
*/
-#include <linux/mm.h>
-#include <crypto/sha2.h>
-#include <crypto/sha256_base.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/module.h>
-#include <asm/byteorder.h>
#include <asm/octeon/octeon.h>
#include <crypto/internal/hash.h>
+#include <crypto/sha2.h>
+#include <crypto/sha256_base.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
#include "octeon-crypto.h"
@@ -30,7 +27,7 @@
* We pass everything as 64-bit. OCTEON can handle misaligned data.
*/
-static void octeon_sha256_store_hash(struct sha256_state *sctx)
+static void octeon_sha256_store_hash(struct crypto_sha256_state *sctx)
{
u64 *hash = (u64 *)sctx->state;
@@ -40,7 +37,7 @@ static void octeon_sha256_store_hash(struct sha256_state *sctx)
write_octeon_64bit_hash_dword(hash[3], 3);
}
-static void octeon_sha256_read_hash(struct sha256_state *sctx)
+static void octeon_sha256_read_hash(struct crypto_sha256_state *sctx)
{
u64 *hash = (u64 *)sctx->state;
@@ -50,158 +47,72 @@ static void octeon_sha256_read_hash(struct sha256_state *sctx)
hash[3] = read_octeon_64bit_hash_dword(3);
}
-static void octeon_sha256_transform(const void *_block)
+static void octeon_sha256_transform(struct crypto_sha256_state *sctx,
+ const u8 *src, int blocks)
{
- const u64 *block = _block;
+ do {
+ const u64 *block = (const u64 *)src;
- write_octeon_64bit_block_dword(block[0], 0);
- write_octeon_64bit_block_dword(block[1], 1);
- write_octeon_64bit_block_dword(block[2], 2);
- write_octeon_64bit_block_dword(block[3], 3);
- write_octeon_64bit_block_dword(block[4], 4);
- write_octeon_64bit_block_dword(block[5], 5);
- write_octeon_64bit_block_dword(block[6], 6);
- octeon_sha256_start(block[7]);
-}
+ write_octeon_64bit_block_dword(block[0], 0);
+ write_octeon_64bit_block_dword(block[1], 1);
+ write_octeon_64bit_block_dword(block[2], 2);
+ write_octeon_64bit_block_dword(block[3], 3);
+ write_octeon_64bit_block_dword(block[4], 4);
+ write_octeon_64bit_block_dword(block[5], 5);
+ write_octeon_64bit_block_dword(block[6], 6);
+ octeon_sha256_start(block[7]);
-static void __octeon_sha256_update(struct sha256_state *sctx, const u8 *data,
- unsigned int len)
-{
- unsigned int partial;
- unsigned int done;
- const u8 *src;
-
- partial = sctx->count % SHA256_BLOCK_SIZE;
- sctx->count += len;
- done = 0;
- src = data;
-
- if ((partial + len) >= SHA256_BLOCK_SIZE) {
- if (partial) {
- done = -partial;
- memcpy(sctx->buf + partial, data,
- done + SHA256_BLOCK_SIZE);
- src = sctx->buf;
- }
-
- do {
- octeon_sha256_transform(src);
- done += SHA256_BLOCK_SIZE;
- src = data + done;
- } while (done + SHA256_BLOCK_SIZE <= len);
-
- partial = 0;
- }
- memcpy(sctx->buf + partial, src, len - done);
+ src += SHA256_BLOCK_SIZE;
+ } while (--blocks);
}
static int octeon_sha256_update(struct shash_desc *desc, const u8 *data,
unsigned int len)
{
- struct sha256_state *sctx = shash_desc_ctx(desc);
+ struct crypto_sha256_state *sctx = shash_desc_ctx(desc);
struct octeon_cop2_state state;
unsigned long flags;
-
- /*
- * Small updates never reach the crypto engine, so the generic sha256 is
- * faster because of the heavyweight octeon_crypto_enable() /
- * octeon_crypto_disable().
- */
- if ((sctx->count % SHA256_BLOCK_SIZE) + len < SHA256_BLOCK_SIZE)
- return crypto_sha256_update(desc, data, len);
+ int remain;
flags = octeon_crypto_enable(&state);
octeon_sha256_store_hash(sctx);
- __octeon_sha256_update(sctx, data, len);
+ remain = sha256_base_do_update_blocks(desc, data, len,
+ octeon_sha256_transform);
octeon_sha256_read_hash(sctx);
octeon_crypto_disable(&state, flags);
-
- return 0;
+ return remain;
}
-static int octeon_sha256_final(struct shash_desc *desc, u8 *out)
+static int octeon_sha256_finup(struct shash_desc *desc, const u8 *src,
+ unsigned int len, u8 *out)
{
- struct sha256_state *sctx = shash_desc_ctx(desc);
- static const u8 padding[64] = { 0x80, };
+ struct crypto_sha256_state *sctx = shash_desc_ctx(desc);
struct octeon_cop2_state state;
- __be32 *dst = (__be32 *)out;
- unsigned int pad_len;
unsigned long flags;
- unsigned int index;
- __be64 bits;
- int i;
-
- /* Save number of bits. */
- bits = cpu_to_be64(sctx->count << 3);
-
- /* Pad out to 56 mod 64. */
- index = sctx->count & 0x3f;
- pad_len = (index < 56) ? (56 - index) : ((64+56) - index);
flags = octeon_crypto_enable(&state);
octeon_sha256_store_hash(sctx);
- __octeon_sha256_update(sctx, padding, pad_len);
-
- /* Append length (before padding). */
- __octeon_sha256_update(sctx, (const u8 *)&bits, sizeof(bits));
+ sha256_base_do_finup(desc, src, len, octeon_sha256_transform);
octeon_sha256_read_hash(sctx);
octeon_crypto_disable(&state, flags);
-
- /* Store state in digest */
- for (i = 0; i < 8; i++)
- dst[i] = cpu_to_be32(sctx->state[i]);
-
- /* Zeroize sensitive information. */
- memset(sctx, 0, sizeof(*sctx));
-
- return 0;
-}
-
-static int octeon_sha224_final(struct shash_desc *desc, u8 *hash)
-{
- u8 D[SHA256_DIGEST_SIZE];
-
- octeon_sha256_final(desc, D);
-
- memcpy(hash, D, SHA224_DIGEST_SIZE);
- memzero_explicit(D, SHA256_DIGEST_SIZE);
-
- return 0;
-}
-
-static int octeon_sha256_export(struct shash_desc *desc, void *out)
-{
- struct sha256_state *sctx = shash_desc_ctx(desc);
-
- memcpy(out, sctx, sizeof(*sctx));
- return 0;
-}
-
-static int octeon_sha256_import(struct shash_desc *desc, const void *in)
-{
- struct sha256_state *sctx = shash_desc_ctx(desc);
-
- memcpy(sctx, in, sizeof(*sctx));
- return 0;
+ return sha256_base_finish(desc, out);
}
static struct shash_alg octeon_sha256_algs[2] = { {
.digestsize = SHA256_DIGEST_SIZE,
.init = sha256_base_init,
.update = octeon_sha256_update,
- .final = octeon_sha256_final,
- .export = octeon_sha256_export,
- .import = octeon_sha256_import,
- .descsize = sizeof(struct sha256_state),
- .statesize = sizeof(struct sha256_state),
+ .finup = octeon_sha256_finup,
+ .descsize = sizeof(struct crypto_sha256_state),
.base = {
.cra_name = "sha256",
.cra_driver_name= "octeon-sha256",
.cra_priority = OCTEON_CR_OPCODE_PRIORITY,
+ .cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY,
.cra_blocksize = SHA256_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
@@ -209,11 +120,13 @@ static struct shash_alg octeon_sha256_algs[2] = { {
.digestsize = SHA224_DIGEST_SIZE,
.init = sha224_base_init,
.update = octeon_sha256_update,
- .final = octeon_sha224_final,
- .descsize = sizeof(struct sha256_state),
+ .finup = octeon_sha256_finup,
+ .descsize = sizeof(struct crypto_sha256_state),
.base = {
.cra_name = "sha224",
.cra_driver_name= "octeon-sha224",
+ .cra_priority = OCTEON_CR_OPCODE_PRIORITY,
+ .cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY,
.cra_blocksize = SHA224_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
Use the Crypto API partial block handling. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> --- .../mips/cavium-octeon/crypto/octeon-sha256.c | 161 ++++-------------- 1 file changed, 37 insertions(+), 124 deletions(-)