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authorHerbert Xu <herbert@gondor.apana.org.au>2007-12-17 21:34:32 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2008-01-11 08:16:41 +1100
commit5311f248b7764ba8b59e6d477355f766e5609686 (patch)
tree228910c68fc3d29a6bfe82cccfdc042e4003ebd2 /crypto/gcm.c
parent653ebd9c8510a7d647ed23e66e1338f848ebdbab (diff)
downloadlinux-5311f248b7764ba8b59e6d477355f766e5609686.tar.gz
[CRYPTO] ctr: Refactor into ctr and rfc3686
As discussed previously, this patch moves the basic CTR functionality into a chainable algorithm called ctr. The IPsec-specific variant of it is now placed on top with the name rfc3686. So ctr(aes) gives a chainable cipher with IV size 16 while the IPsec variant will be called rfc3686(ctr(aes)). This patch also adjusts gcm accordingly. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/gcm.c')
-rw-r--r--crypto/gcm.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/crypto/gcm.c b/crypto/gcm.c
index 08183171913c..c54d478948a0 100644
--- a/crypto/gcm.c
+++ b/crypto/gcm.c
@@ -160,7 +160,7 @@ static void crypto_gcm_ghash_final_xor(struct crypto_gcm_ghash_ctx *ctx,
static inline void crypto_gcm_set_counter(u8 *counterblock, u32 value)
{
- *((u32 *)&counterblock[12]) = cpu_to_be32(value);
+ *((u32 *)&counterblock[12]) = cpu_to_be32(value + 1);
}
static int crypto_gcm_encrypt_counter(struct crypto_aead *aead, u8 *block,
@@ -400,9 +400,8 @@ static struct crypto_instance *crypto_gcm_alloc(struct rtattr **tb)
return inst;
inst = ERR_PTR(ENAMETOOLONG);
- if (snprintf(
- ctr_name, CRYPTO_MAX_ALG_NAME,
- "ctr(%s,0,16,4)", cipher->cra_name) >= CRYPTO_MAX_ALG_NAME)
+ if (snprintf(ctr_name, CRYPTO_MAX_ALG_NAME, "ctr(%s)",
+ cipher->cra_name) >= CRYPTO_MAX_ALG_NAME)
return inst;
ctr = crypto_alg_mod_lookup(ctr_name, CRYPTO_ALG_TYPE_BLKCIPHER,