Optimize and cleanup 32-bit and 64-bit endianess transforms
authorJussi Kivilinna <jussi.kivilinna@iki.fi>
Sat, 21 Sep 2013 10:54:38 +0000 (13:54 +0300)
committerJussi Kivilinna <jussi.kivilinna@iki.fi>
Sat, 21 Sep 2013 11:08:24 +0000 (14:08 +0300)
commit9337e03824a5bdd3bbbcb8382cabefe6d6c32e1e
treecf6f796989327c58327d3178f312d2876f268483
parent7409de7bc28ff8847c9d71d8c3e35e1968d59d60
Optimize and cleanup 32-bit and 64-bit endianess transforms

* cipher/bithelp.h (bswap32, bswap64, le_bswap32, be_bswap32)
(le_bswap64, be_bswap64): New.
* cipher/bufhelp.h (buf_get_be32, buf_get_le32, buf_put_le32)
(buf_put_be32, buf_get_be64, buf_get_le64, buf_put_be64)
(buf_put_le64): New.
* cipher/blowfish.c (do_encrypt_block, do_decrypt_block): Use new
endian conversion helpers.
(do_bf_setkey): Turn endian specific code to generic.
* cipher/camellia.c (GETU32, PUTU32): Use new endian conversion
helpers.
* cipher/cast5.c (rol): Remove, use rol from bithelp.
(F1, F2, F3): Fix to use rol from bithelp.
(do_encrypt_block, do_decrypt_block, do_cast_setkey): Use new endian
conversion helpers.
* cipher/des.c (READ_64BIT_DATA, WRITE_64BIT_DATA): Ditto.
* cipher/md4.c (transform, md4_final): Ditto.
* cipher/md5.c (transform, md5_final): Ditto.
* cipher/rmd160.c (transform, rmd160_final): Ditto.
* cipher/salsa20.c (LE_SWAP32, LE_READ_UINT32): Ditto.
* cipher/scrypt.c (READ_UINT64, LE_READ_UINT64, LE_SWAP32): Ditto.
* cipher/seed.c (GETU32, PUTU32): Ditto.
* cipher/serpent.c (byte_swap_32): Remove.
(serpent_key_prepare, serpent_encrypt_internal)
(serpent_decrypt_internal): Use new endian conversion helpers.
* cipher/sha1.c (transform, sha1_final): Ditto.
* cipher/sha256.c (transform, sha256_final): Ditto.
* cipher/sha512.c (__transform, sha512_final): Ditto.
* cipher/stribog.c (transform, stribog_final): Ditto.
* cipher/tiger.c (transform, tiger_final): Ditto.
* cipher/twofish.c (INPACK, OUTUNPACK): Ditto.
* cipher/whirlpool.c (buffer_to_block, block_to_buffer): Ditto.
* configure.ac (gcry_cv_have_builtin_bswap32): Check for compiler
provided __builtin_bswap32.
(gcry_cv_have_builtin_bswap64): Check for compiler provided
__builtin_bswap64.
--

Patch add helper functions that provide conversions to/from integers and
buffers of different endianess. Benefits are code cleanup and optimization
for architectures that have byte-swaping instructions and/or can do fast
unaligned memory accesses.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
21 files changed:
cipher/bithelp.h
cipher/blowfish.c
cipher/bufhelp.h
cipher/camellia.c
cipher/cast5.c
cipher/des.c
cipher/md4.c
cipher/md5.c
cipher/rmd160.c
cipher/salsa20.c
cipher/scrypt.c
cipher/seed.c
cipher/serpent.c
cipher/sha1.c
cipher/sha256.c
cipher/sha512.c
cipher/stribog.c
cipher/tiger.c
cipher/twofish.c
cipher/whirlpool.c
configure.ac