X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=crypto%2Fhash.c;h=cb86b19fd105c320e8b75e1d63d388242b0d716c;hb=3ddf1e7f57237ac7c5d5bfb7058f1ea4f970b661;hp=12c4514f3478df49786e7fe36009bb1e4fa95fd6;hpb=27d2a3300755387d2fec231d37944907ff992ce8;p=safe%2Fjmp%2Flinux-2.6

diff --git a/crypto/hash.c b/crypto/hash.c
index 12c4514..cb86b19 100644
--- a/crypto/hash.c
+++ b/crypto/hash.c
@@ -9,9 +9,11 @@
  * any later version.
  */
 
+#include <crypto/internal/hash.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/seq_file.h>
 
 #include "internal.h"
@@ -22,26 +24,145 @@ static unsigned int crypto_hash_ctxsize(struct crypto_alg *alg, u32 type,
 	return alg->cra_ctxsize;
 }
 
-static int crypto_init_hash_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
+static int hash_setkey_unaligned(struct crypto_hash *crt, const u8 *key,
+		                 unsigned int keylen)
 {
-	struct hash_tfm *crt = &tfm->crt_hash;
+	struct crypto_tfm *tfm = crypto_hash_tfm(crt);
 	struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+	unsigned long alignmask = crypto_hash_alignmask(crt);
+	int ret;
+	u8 *buffer, *alignbuffer;
+	unsigned long absize;
 
-	if (alg->digestsize > crypto_tfm_alg_blocksize(tfm))
-		return -EINVAL;
+	absize = keylen + alignmask;
+	buffer = kmalloc(absize, GFP_ATOMIC);
+	if (!buffer)
+		return -ENOMEM;
+
+	alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
+	memcpy(alignbuffer, key, keylen);
+	ret = alg->setkey(crt, alignbuffer, keylen);
+	memset(alignbuffer, 0, keylen);
+	kfree(buffer);
+	return ret;
+}
+
+static int hash_setkey(struct crypto_hash *crt, const u8 *key,
+		       unsigned int keylen)
+{
+	struct crypto_tfm *tfm = crypto_hash_tfm(crt);
+	struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+	unsigned long alignmask = crypto_hash_alignmask(crt);
+
+	if ((unsigned long)key & alignmask)
+		return hash_setkey_unaligned(crt, key, keylen);
+
+	return alg->setkey(crt, key, keylen);
+}
+
+static int hash_async_setkey(struct crypto_ahash *tfm_async, const u8 *key,
+			unsigned int keylen)
+{
+	struct crypto_tfm  *tfm      = crypto_ahash_tfm(tfm_async);
+	struct crypto_hash *tfm_hash = __crypto_hash_cast(tfm);
+	struct hash_alg    *alg      = &tfm->__crt_alg->cra_hash;
+
+	return alg->setkey(tfm_hash, key, keylen);
+}
+
+static int hash_async_init(struct ahash_request *req)
+{
+	struct crypto_tfm *tfm = req->base.tfm;
+	struct hash_alg   *alg = &tfm->__crt_alg->cra_hash;
+	struct hash_desc  desc = {
+		.tfm = __crypto_hash_cast(tfm),
+		.flags = req->base.flags,
+	};
+
+	return alg->init(&desc);
+}
+
+static int hash_async_update(struct ahash_request *req)
+{
+	struct crypto_tfm *tfm = req->base.tfm;
+	struct hash_alg   *alg = &tfm->__crt_alg->cra_hash;
+	struct hash_desc  desc = {
+		.tfm = __crypto_hash_cast(tfm),
+		.flags = req->base.flags,
+	};
+
+	return alg->update(&desc, req->src, req->nbytes);
+}
+
+static int hash_async_final(struct ahash_request *req)
+{
+	struct crypto_tfm *tfm = req->base.tfm;
+	struct hash_alg   *alg = &tfm->__crt_alg->cra_hash;
+	struct hash_desc  desc = {
+		.tfm = __crypto_hash_cast(tfm),
+		.flags = req->base.flags,
+	};
 
-	crt->init = alg->init;
-	crt->update = alg->update;
-	crt->final = alg->final;
-	crt->digest = alg->digest;
-	crt->setkey = alg->setkey;
+	return alg->final(&desc, req->result);
+}
+
+static int hash_async_digest(struct ahash_request *req)
+{
+	struct crypto_tfm *tfm = req->base.tfm;
+	struct hash_alg   *alg = &tfm->__crt_alg->cra_hash;
+	struct hash_desc  desc = {
+		.tfm = __crypto_hash_cast(tfm),
+		.flags = req->base.flags,
+	};
+
+	return alg->digest(&desc, req->src, req->nbytes, req->result);
+}
+
+static int crypto_init_hash_ops_async(struct crypto_tfm *tfm)
+{
+	struct ahash_tfm *crt = &tfm->crt_ahash;
+	struct hash_alg  *alg = &tfm->__crt_alg->cra_hash;
+
+	crt->init       = hash_async_init;
+	crt->update     = hash_async_update;
+	crt->final      = hash_async_final;
+	crt->digest     = hash_async_digest;
+	crt->setkey     = hash_async_setkey;
 	crt->digestsize = alg->digestsize;
 
 	return 0;
 }
 
+static int crypto_init_hash_ops_sync(struct crypto_tfm *tfm)
+{
+	struct hash_tfm *crt = &tfm->crt_hash;
+	struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+
+	crt->init       = alg->init;
+	crt->update     = alg->update;
+	crt->final      = alg->final;
+	crt->digest     = alg->digest;
+	crt->setkey     = hash_setkey;
+	crt->digestsize = alg->digestsize;
+
+	return 0;
+}
+
+static int crypto_init_hash_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
+{
+	struct hash_alg *alg = &tfm->__crt_alg->cra_hash;
+
+	if (alg->digestsize > PAGE_SIZE / 8)
+		return -EINVAL;
+
+	if ((mask & CRYPTO_ALG_TYPE_HASH_MASK) != CRYPTO_ALG_TYPE_HASH_MASK)
+		return crypto_init_hash_ops_async(tfm);
+	else
+		return crypto_init_hash_ops_sync(tfm);
+}
+
 static void crypto_hash_show(struct seq_file *m, struct crypto_alg *alg)
-	__attribute_used__;
+	__attribute__ ((unused));
 static void crypto_hash_show(struct seq_file *m, struct crypto_alg *alg)
 {
 	seq_printf(m, "type         : hash\n");