* 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/cryptohash.h>
#include <linux/types.h>
#include <asm/byteorder.h>
struct rmd160_ctx {
u64 byte_count;
u32 state[5];
- u32 buffer[16];
+ __le32 buffer[16];
};
#define K1 RMD_K1
#define F5(x, y, z) (x ^ (y | ~z))
#define ROUND(a, b, c, d, e, f, k, x, s) { \
- (a) += f((b), (c), (d)) + (x) + (k); \
+ (a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k); \
(a) = rol32((a), (s)) + (e); \
(c) = rol32((c), 10); \
}
-static void rmd160_transform(u32 *state, u32 const *in)
+static void rmd160_transform(u32 *state, const __le32 *in)
{
u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee;
return;
}
-static inline void le32_to_cpu_array(u32 *buf, unsigned int words)
+static int rmd160_init(struct shash_desc *desc)
{
- while (words--) {
- le32_to_cpus(buf);
- buf++;
- }
-}
-
-static inline void cpu_to_le32_array(u32 *buf, unsigned int words)
-{
- while (words--) {
- cpu_to_le32s(buf);
- buf++;
- }
-}
-
-static inline void rmd160_transform_helper(struct rmd160_ctx *ctx)
-{
- le32_to_cpu_array(ctx->buffer, sizeof(ctx->buffer) / sizeof(u32));
- rmd160_transform(ctx->state, ctx->buffer);
-}
-
-static void rmd160_init(struct crypto_tfm *tfm)
-{
- struct rmd160_ctx *rctx = crypto_tfm_ctx(tfm);
+ struct rmd160_ctx *rctx = shash_desc_ctx(desc);
rctx->byte_count = 0;
rctx->state[4] = RMD_H4;
memset(rctx->buffer, 0, sizeof(rctx->buffer));
+
+ return 0;
}
-static void rmd160_update(struct crypto_tfm *tfm, const u8 *data,
- unsigned int len)
+static int rmd160_update(struct shash_desc *desc, const u8 *data,
+ unsigned int len)
{
- struct rmd160_ctx *rctx = crypto_tfm_ctx(tfm);
+ struct rmd160_ctx *rctx = shash_desc_ctx(desc);
const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f);
rctx->byte_count += len;
if (avail > len) {
memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
data, len);
- return;
+ goto out;
}
memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
data, avail);
- rmd160_transform_helper(rctx);
+ rmd160_transform(rctx->state, rctx->buffer);
data += avail;
len -= avail;
while (len >= sizeof(rctx->buffer)) {
memcpy(rctx->buffer, data, sizeof(rctx->buffer));
- rmd160_transform_helper(rctx);
+ rmd160_transform(rctx->state, rctx->buffer);
data += sizeof(rctx->buffer);
len -= sizeof(rctx->buffer);
}
memcpy(rctx->buffer, data, len);
+
+out:
+ return 0;
}
/* Add padding and return the message digest. */
-static void rmd160_final(struct crypto_tfm *tfm, u8 *out)
+static int rmd160_final(struct shash_desc *desc, u8 *out)
{
- struct rmd160_ctx *rctx = crypto_tfm_ctx(tfm);
- u32 index, padlen;
- u64 bits;
+ struct rmd160_ctx *rctx = shash_desc_ctx(desc);
+ u32 i, index, padlen;
+ __le64 bits;
+ __le32 *dst = (__le32 *)out;
static const u8 padding[64] = { 0x80, };
- bits = rctx->byte_count << 3;
+
+ bits = cpu_to_le64(rctx->byte_count << 3);
/* Pad out to 56 mod 64 */
index = rctx->byte_count & 0x3f;
padlen = (index < 56) ? (56 - index) : ((64+56) - index);
- rmd160_update(tfm, padding, padlen);
+ rmd160_update(desc, padding, padlen);
/* Append length */
- rmd160_update(tfm, (const u8 *)&bits, sizeof(bits));
+ rmd160_update(desc, (const u8 *)&bits, sizeof(bits));
/* Store state in digest */
- memcpy(out, rctx->state, sizeof(rctx->state));
+ for (i = 0; i < 5; i++)
+ dst[i] = cpu_to_le32p(&rctx->state[i]);
/* Wipe context */
memset(rctx, 0, sizeof(*rctx));
+
+ return 0;
}
-static struct crypto_alg alg = {
- .cra_name = "rmd160",
- .cra_driver_name = "rmd160",
- .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
- .cra_blocksize = RMD160_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct rmd160_ctx),
- .cra_module = THIS_MODULE,
- .cra_list = LIST_HEAD_INIT(alg.cra_list),
- .cra_u = { .digest = {
- .dia_digestsize = RMD160_DIGEST_SIZE,
- .dia_init = rmd160_init,
- .dia_update = rmd160_update,
- .dia_final = rmd160_final } }
+static struct shash_alg alg = {
+ .digestsize = RMD160_DIGEST_SIZE,
+ .init = rmd160_init,
+ .update = rmd160_update,
+ .final = rmd160_final,
+ .descsize = sizeof(struct rmd160_ctx),
+ .base = {
+ .cra_name = "rmd160",
+ .cra_flags = CRYPTO_ALG_TYPE_SHASH,
+ .cra_blocksize = RMD160_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
};
static int __init rmd160_mod_init(void)
{
- return crypto_register_alg(&alg);
+ return crypto_register_shash(&alg);
}
static void __exit rmd160_mod_fini(void)
{
- crypto_unregister_alg(&alg);
+ crypto_unregister_shash(&alg);
}
module_init(rmd160_mod_init);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("RIPEMD-160 Message Digest");
-
-MODULE_ALIAS("rmd160");