X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=crypto%2Fhmac.c;h=b521bcd2b2c6036f155bc23641d41df877baca18;hb=600812ecead0da2e7b6f9e5f5aad68b1ad8ae581;hp=eac77e2947407082dd8da78946296c1895403ea5;hpb=0796ae061e6da5de7cfc1af57dfd42a73908b1bf;p=safe%2Fjmp%2Flinux-2.6

diff --git a/crypto/hmac.c b/crypto/hmac.c
index eac77e2..b521bcd 100644
--- a/crypto/hmac.c
+++ b/crypto/hmac.c
@@ -29,107 +29,6 @@ struct hmac_ctx {
 	struct crypto_hash *child;
 };
 
-static void hash_key(struct crypto_tfm *tfm, u8 *key, unsigned int keylen)
-{
-	struct scatterlist tmp;
-	
-	sg_set_buf(&tmp, key, keylen);
-	crypto_digest_digest(tfm, &tmp, 1, key);
-}
-
-int crypto_alloc_hmac_block(struct crypto_tfm *tfm)
-{
-	int ret = 0;
-
-	BUG_ON(!crypto_tfm_alg_blocksize(tfm));
-	
-	tfm->crt_hash.hmac_block = kmalloc(crypto_tfm_alg_blocksize(tfm),
-					   GFP_KERNEL);
-	if (tfm->crt_hash.hmac_block == NULL)
-		ret = -ENOMEM;
-
-	return ret;
-		
-}
-
-void crypto_free_hmac_block(struct crypto_tfm *tfm)
-{
-	kfree(tfm->crt_hash.hmac_block);
-}
-
-void crypto_hmac_init(struct crypto_tfm *tfm, u8 *key, unsigned int *keylen)
-{
-	unsigned int i;
-	struct scatterlist tmp;
-	char *ipad = tfm->crt_hash.hmac_block;
-	
-	if (*keylen > crypto_tfm_alg_blocksize(tfm)) {
-		hash_key(tfm, key, *keylen);
-		*keylen = crypto_tfm_alg_digestsize(tfm);
-	}
-
-	memset(ipad, 0, crypto_tfm_alg_blocksize(tfm));
-	memcpy(ipad, key, *keylen);
-
-	for (i = 0; i < crypto_tfm_alg_blocksize(tfm); i++)
-		ipad[i] ^= 0x36;
-
-	sg_set_buf(&tmp, ipad, crypto_tfm_alg_blocksize(tfm));
-	
-	crypto_digest_init(tfm);
-	crypto_digest_update(tfm, &tmp, 1);
-}
-
-void crypto_hmac_update(struct crypto_tfm *tfm,
-                        struct scatterlist *sg, unsigned int nsg)
-{
-	crypto_digest_update(tfm, sg, nsg);
-}
-
-void crypto_hmac_final(struct crypto_tfm *tfm, u8 *key,
-                       unsigned int *keylen, u8 *out)
-{
-	unsigned int i;
-	struct scatterlist tmp;
-	char *opad = tfm->crt_hash.hmac_block;
-	
-	if (*keylen > crypto_tfm_alg_blocksize(tfm)) {
-		hash_key(tfm, key, *keylen);
-		*keylen = crypto_tfm_alg_digestsize(tfm);
-	}
-
-	crypto_digest_final(tfm, out);
-
-	memset(opad, 0, crypto_tfm_alg_blocksize(tfm));
-	memcpy(opad, key, *keylen);
-		
-	for (i = 0; i < crypto_tfm_alg_blocksize(tfm); i++)
-		opad[i] ^= 0x5c;
-
-	sg_set_buf(&tmp, opad, crypto_tfm_alg_blocksize(tfm));
-
-	crypto_digest_init(tfm);
-	crypto_digest_update(tfm, &tmp, 1);
-	
-	sg_set_buf(&tmp, out, crypto_tfm_alg_digestsize(tfm));
-	
-	crypto_digest_update(tfm, &tmp, 1);
-	crypto_digest_final(tfm, out);
-}
-
-void crypto_hmac(struct crypto_tfm *tfm, u8 *key, unsigned int *keylen,
-                 struct scatterlist *sg, unsigned int nsg, u8 *out)
-{
-	crypto_hmac_init(tfm, key, keylen);
-	crypto_hmac_update(tfm, sg, nsg);
-	crypto_hmac_final(tfm, key, keylen, out);
-}
-
-EXPORT_SYMBOL_GPL(crypto_hmac_init);
-EXPORT_SYMBOL_GPL(crypto_hmac_update);
-EXPORT_SYMBOL_GPL(crypto_hmac_final);
-EXPORT_SYMBOL_GPL(crypto_hmac);
-
 static inline void *align_ptr(void *p, unsigned int align)
 {
 	return (void *)ALIGN((unsigned long)p, align);
@@ -193,13 +92,17 @@ static int hmac_init(struct hash_desc *pdesc)
 	struct hmac_ctx *ctx = align_ptr(ipad + bs * 2 + ds, sizeof(void *));
 	struct hash_desc desc;
 	struct scatterlist tmp;
+	int err;
 
 	desc.tfm = ctx->child;
 	desc.flags = pdesc->flags & CRYPTO_TFM_REQ_MAY_SLEEP;
 	sg_set_buf(&tmp, ipad, bs);
 
-	return unlikely(crypto_hash_init(&desc)) ?:
-	       crypto_hash_update(&desc, &tmp, 1);
+	err = crypto_hash_init(&desc);
+	if (unlikely(err))
+		return err;
+
+	return crypto_hash_update(&desc, &tmp, bs);
 }
 
 static int hmac_update(struct hash_desc *pdesc,
@@ -224,13 +127,17 @@ static int hmac_final(struct hash_desc *pdesc, u8 *out)
 	struct hmac_ctx *ctx = align_ptr(digest + ds, sizeof(void *));
 	struct hash_desc desc;
 	struct scatterlist tmp;
+	int err;
 
 	desc.tfm = ctx->child;
 	desc.flags = pdesc->flags & CRYPTO_TFM_REQ_MAY_SLEEP;
 	sg_set_buf(&tmp, opad, bs + ds);
 
-	return unlikely(crypto_hash_final(&desc, digest)) ?:
-	       crypto_hash_digest(&desc, &tmp, bs + ds, out);
+	err = crypto_hash_final(&desc, digest);
+	if (unlikely(err))
+		return err;
+
+	return crypto_hash_digest(&desc, &tmp, bs + ds, out);
 }
 
 static int hmac_digest(struct hash_desc *pdesc, struct scatterlist *sg,
@@ -246,6 +153,7 @@ static int hmac_digest(struct hash_desc *pdesc, struct scatterlist *sg,
 	struct hash_desc desc;
 	struct scatterlist sg1[2];
 	struct scatterlist sg2[1];
+	int err;
 
 	desc.tfm = ctx->child;
 	desc.flags = pdesc->flags & CRYPTO_TFM_REQ_MAY_SLEEP;
@@ -255,8 +163,11 @@ static int hmac_digest(struct hash_desc *pdesc, struct scatterlist *sg,
 	sg1[1].length = 0;
 	sg_set_buf(sg2, opad, bs + ds);
 
-	return unlikely(crypto_hash_digest(&desc, sg1, nbytes + bs, digest)) ?:
-	       crypto_hash_digest(&desc, sg2, bs + ds, out);
+	err = crypto_hash_digest(&desc, sg1, nbytes + bs, digest);
+	if (unlikely(err))
+		return err;
+
+	return crypto_hash_digest(&desc, sg2, bs + ds, out);
 }
 
 static int hmac_init_tfm(struct crypto_tfm *tfm)