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| author | Sebastian Siewior <sebastian@breakpoint.cc> | 2007-11-30 16:36:57 +1100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2008-01-11 08:16:26 +1100 |
| commit | d2456c66236c15d6462f1ac751cdbd48a34e9704 (patch) | |
| tree | 0d221b08d0c1d4942881ad138c142c4163d19717 /drivers/crypto | |
| parent | 9617d6ef6278edd04070ae404c871f65a466c6d2 (diff) | |
| download | linux-stable-d2456c66236c15d6462f1ac751cdbd48a34e9704.tar.gz linux-stable-d2456c66236c15d6462f1ac751cdbd48a34e9704.tar.bz2 linux-stable-d2456c66236c15d6462f1ac751cdbd48a34e9704.zip | |
[CRYPTO] geode: do not copy the IV too often
There is no reason to keep the IV in the private structre. Instead keep
just a pointer to make the patch smaller :)
This also remove a few memcpy()s
Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/geode-aes.c | 6 | ||||
| -rw-r--r-- | drivers/crypto/geode-aes.h | 2 |
2 files changed, 3 insertions, 5 deletions
diff --git a/drivers/crypto/geode-aes.c b/drivers/crypto/geode-aes.c index 0ca92d414667..68be7d08aeb3 100644 --- a/drivers/crypto/geode-aes.c +++ b/drivers/crypto/geode-aes.c @@ -315,7 +315,7 @@ geode_cbc_decrypt(struct blkcipher_desc *desc, blkcipher_walk_init(&walk, dst, src, nbytes); err = blkcipher_walk_virt(desc, &walk); - memcpy(op->iv, walk.iv, AES_IV_LENGTH); + op->iv = walk.iv; while((nbytes = walk.nbytes)) { op->src = walk.src.virt.addr, @@ -330,7 +330,6 @@ geode_cbc_decrypt(struct blkcipher_desc *desc, err = blkcipher_walk_done(desc, &walk, nbytes); } - memcpy(walk.iv, op->iv, AES_IV_LENGTH); return err; } @@ -348,7 +347,7 @@ geode_cbc_encrypt(struct blkcipher_desc *desc, blkcipher_walk_init(&walk, dst, src, nbytes); err = blkcipher_walk_virt(desc, &walk); - memcpy(op->iv, walk.iv, AES_IV_LENGTH); + op->iv = walk.iv; while((nbytes = walk.nbytes)) { op->src = walk.src.virt.addr, @@ -362,7 +361,6 @@ geode_cbc_encrypt(struct blkcipher_desc *desc, err = blkcipher_walk_done(desc, &walk, nbytes); } - memcpy(walk.iv, op->iv, AES_IV_LENGTH); return err; } diff --git a/drivers/crypto/geode-aes.h b/drivers/crypto/geode-aes.h index 14cc763da1e4..f1855b50da48 100644 --- a/drivers/crypto/geode-aes.h +++ b/drivers/crypto/geode-aes.h @@ -65,7 +65,7 @@ struct geode_aes_op { int len; u8 key[AES_KEY_LENGTH]; - u8 iv[AES_IV_LENGTH]; + u8 *iv; union { struct crypto_blkcipher *blk; |