Add size optimized cipher block copy and xor functions

* cipher/bufhelp.h (buf_get_he32, buf_put_he32, buf_get_he64)
(buf_put_he64): New.
* cipher/cipher-internal.h (cipher_block_cpy, cipher_block_xor)
(cipher_block_xor_1, cipher_block_xor_2dst, cipher_block_xor_n_copy_2)
(cipher_block_xor_n_copy): New.
* cipher/cipher-gcm-intel-pclmul.c
(_gcry_ghash_setup_intel_pclmul): Use assembly for swapping endianness
instead of buf_get_be64 and buf_cpy.
* cipher/blowfish.c: Use new cipher_block_* functions for cipher block
sized buf_cpy/xor* operations.
* cipher/camellia-glue.c: Ditto.
* cipher/cast5.c: Ditto.
* cipher/cipher-aeswrap.c: Ditto.
* cipher/cipher-cbc.c: Ditto.
* cipher/cipher-ccm.c: Ditto.
* cipher/cipher-cfb.c: Ditto.
* cipher/cipher-cmac.c: Ditto.
* cipher/cipher-ctr.c: Ditto.
* cipher/cipher-eax.c: Ditto.
* cipher/cipher-gcm.c: Ditto.
* cipher/cipher-ocb.c: Ditto.
* cipher/cipher-ofb.c: Ditto.
* cipher/cipher-xts.c: Ditto.
* cipher/des.c: Ditto.
* cipher/rijndael.c: Ditto.
* cipher/serpent.c: Ditto.
* cipher/twofish.c: Ditto.
--

This commit adds size-optimized functions for copying and xoring
cipher block sized buffers. These functions also allow GCC to use
inline auto-vectorization for block cipher copying and xoring on
higher optimization levels.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>

1 files changed, 3 insertions, 3 deletions

diff --git a/cipher/twofish.c b/cipher/twofish.c
index 0d187bda..51982c53 100644
--- a/cipher/twofish.c
+++ b/cipher/twofish.c
@@ -1161,7 +1161,7 @@ _gcry_twofish_ctr_enc(void *context, unsigned char *ctr, void *outbuf_arg,
         burn_stack_depth = burn;
 
       /* XOR the input with the encrypted counter and store in output.  */
-      buf_xor(outbuf, tmpbuf, inbuf, TWOFISH_BLOCKSIZE);
+      cipher_block_xor(outbuf, tmpbuf, inbuf, TWOFISH_BLOCKSIZE);
       outbuf += TWOFISH_BLOCKSIZE;
       inbuf  += TWOFISH_BLOCKSIZE;
       /* Increment the counter.  */
@@ -1243,7 +1243,7 @@ _gcry_twofish_cbc_dec(void *context, unsigned char *iv, void *outbuf_arg,
       if (burn > burn_stack_depth)
         burn_stack_depth = burn;
 
-      buf_xor_n_copy_2(outbuf, savebuf, iv, inbuf, TWOFISH_BLOCKSIZE);
+      cipher_block_xor_n_copy_2(outbuf, savebuf, iv, inbuf, TWOFISH_BLOCKSIZE);
       inbuf += TWOFISH_BLOCKSIZE;
       outbuf += TWOFISH_BLOCKSIZE;
     }
@@ -1315,7 +1315,7 @@ _gcry_twofish_cfb_dec(void *context, unsigned char *iv, void *outbuf_arg,
       if (burn > burn_stack_depth)
         burn_stack_depth = burn;
 
-      buf_xor_n_copy(outbuf, iv, inbuf, TWOFISH_BLOCKSIZE);
+      cipher_block_xor_n_copy(outbuf, iv, inbuf, TWOFISH_BLOCKSIZE);
       outbuf += TWOFISH_BLOCKSIZE;
       inbuf += TWOFISH_BLOCKSIZE;
     }