* any later version.
*
*/
+#include <crypto/internal/hash.h>
+#include <crypto/md5.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/string.h>
-#include <linux/crypto.h>
+#include <linux/types.h>
#include <asm/byteorder.h>
-#define MD5_DIGEST_SIZE 16
-#define MD5_HMAC_BLOCK_SIZE 64
-#define MD5_BLOCK_WORDS 16
-#define MD5_HASH_WORDS 4
-
#define F1(x, y, z) (z ^ (x & (y ^ z)))
#define F2(x, y, z) F1(z, x, y)
#define F3(x, y, z) (x ^ y ^ z)
#define MD5STEP(f, w, x, y, z, in, s) \
(w += f(x, y, z) + in, w = (w<<s | w>>(32-s)) + x)
-struct md5_ctx {
- u32 hash[MD5_HASH_WORDS];
- u32 block[MD5_BLOCK_WORDS];
- u64 byte_count;
-};
-
static void md5_transform(u32 *hash, u32 const *in)
{
u32 a, b, c, d;
}
}
-static inline void md5_transform_helper(struct md5_ctx *ctx)
+static inline void md5_transform_helper(struct md5_state *ctx)
{
le32_to_cpu_array(ctx->block, sizeof(ctx->block) / sizeof(u32));
md5_transform(ctx->hash, ctx->block);
}
-static void md5_init(void *ctx)
+static int md5_init(struct shash_desc *desc)
{
- struct md5_ctx *mctx = ctx;
+ struct md5_state *mctx = shash_desc_ctx(desc);
mctx->hash[0] = 0x67452301;
mctx->hash[1] = 0xefcdab89;
mctx->hash[2] = 0x98badcfe;
mctx->hash[3] = 0x10325476;
mctx->byte_count = 0;
+
+ return 0;
}
-static void md5_update(void *ctx, const u8 *data, unsigned int len)
+static int md5_update(struct shash_desc *desc, const u8 *data, unsigned int len)
{
- struct md5_ctx *mctx = ctx;
+ struct md5_state *mctx = shash_desc_ctx(desc);
const u32 avail = sizeof(mctx->block) - (mctx->byte_count & 0x3f);
mctx->byte_count += len;
if (avail > len) {
memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
data, len);
- return;
+ return 0;
}
memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
}
memcpy(mctx->block, data, len);
+
+ return 0;
}
-static void md5_final(void *ctx, u8 *out)
+static int md5_final(struct shash_desc *desc, u8 *out)
{
- struct md5_ctx *mctx = ctx;
+ struct md5_state *mctx = shash_desc_ctx(desc);
const unsigned int offset = mctx->byte_count & 0x3f;
char *p = (char *)mctx->block + offset;
int padding = 56 - (offset + 1);
cpu_to_le32_array(mctx->hash, sizeof(mctx->hash) / sizeof(u32));
memcpy(out, mctx->hash, sizeof(mctx->hash));
memset(mctx, 0, sizeof(*mctx));
+
+ return 0;
}
-static struct crypto_alg alg = {
- .cra_name = "md5",
- .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
- .cra_blocksize = MD5_HMAC_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct md5_ctx),
- .cra_module = THIS_MODULE,
- .cra_list = LIST_HEAD_INIT(alg.cra_list),
- .cra_u = { .digest = {
- .dia_digestsize = MD5_DIGEST_SIZE,
- .dia_init = md5_init,
- .dia_update = md5_update,
- .dia_final = md5_final } }
+static int md5_export(struct shash_desc *desc, void *out)
+{
+ struct md5_state *ctx = shash_desc_ctx(desc);
+
+ memcpy(out, ctx, sizeof(*ctx));
+ return 0;
+}
+
+static int md5_import(struct shash_desc *desc, const void *in)
+{
+ struct md5_state *ctx = shash_desc_ctx(desc);
+
+ memcpy(ctx, in, sizeof(*ctx));
+ return 0;
+}
+
+static struct shash_alg alg = {
+ .digestsize = MD5_DIGEST_SIZE,
+ .init = md5_init,
+ .update = md5_update,
+ .final = md5_final,
+ .export = md5_export,
+ .import = md5_import,
+ .descsize = sizeof(struct md5_state),
+ .statesize = sizeof(struct md5_state),
+ .base = {
+ .cra_name = "md5",
+ .cra_flags = CRYPTO_ALG_TYPE_SHASH,
+ .cra_blocksize = MD5_HMAC_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
};
-static int __init init(void)
+static int __init md5_mod_init(void)
{
- return crypto_register_alg(&alg);
+ return crypto_register_shash(&alg);
}
-static void __exit fini(void)
+static void __exit md5_mod_fini(void)
{
- crypto_unregister_alg(&alg);
+ crypto_unregister_shash(&alg);
}
-module_init(init);
-module_exit(fini);
+module_init(md5_mod_init);
+module_exit(md5_mod_fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("MD5 Message Digest Algorithm");