[CRYPTO] digest: Remove old HMAC implementation
This patch removes the old HMAC implementation now that nobody uses it
anymore.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/crypto/Kconfig b/crypto/Kconfig
index f07d923..1e2f39c 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -33,7 +33,7 @@
cbc(aes).
config CRYPTO_HMAC
- bool "HMAC support"
+ tristate "HMAC support"
select CRYPTO_HASH
help
HMAC: Keyed-Hashing for Message Authentication (RFC2104).
diff --git a/crypto/digest.c b/crypto/digest.c
index 5873063..0155a94 100644
--- a/crypto/digest.c
+++ b/crypto/digest.c
@@ -191,10 +191,9 @@
ops->setkey = dalg->dia_setkey ? setkey : nosetkey;
ops->digestsize = dalg->dia_digestsize;
- return crypto_alloc_hmac_block(tfm);
+ return 0;
}
void crypto_exit_digest_ops(struct crypto_tfm *tfm)
{
- crypto_free_hmac_block(tfm);
}
diff --git a/crypto/hmac.c b/crypto/hmac.c
index eac77e2..f403b69 100644
--- a/crypto/hmac.c
+++ b/crypto/hmac.c
@@ -29,107 +29,6 @@
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);
diff --git a/crypto/internal.h b/crypto/internal.h
index 93d9b10..2da6ad4 100644
--- a/crypto/internal.h
+++ b/crypto/internal.h
@@ -73,19 +73,6 @@
cond_resched();
}
-#ifdef CONFIG_CRYPTO_HMAC
-int crypto_alloc_hmac_block(struct crypto_tfm *tfm);
-void crypto_free_hmac_block(struct crypto_tfm *tfm);
-#else
-static inline int crypto_alloc_hmac_block(struct crypto_tfm *tfm)
-{
- return 0;
-}
-
-static inline void crypto_free_hmac_block(struct crypto_tfm *tfm)
-{ }
-#endif
-
#ifdef CONFIG_PROC_FS
void __init crypto_init_proc(void);
void __exit crypto_exit_proc(void);