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| author | Jussi Kivilinna <jussi.kivilinna@mbnet.fi> | 2012-10-20 16:06:36 +0400 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2012-10-24 17:10:54 +0400 |
| commit | 58990986f1cba40c23c0c10592ace08616de3ffa (patch) | |
| tree | 84466698a28860d1457c804b857b2e97d1995fcb /arch/x86/crypto/serpent_avx_glue.c | |
| parent | e080b17a8cec92ef42343989ae65c73c25529346 (diff) | |
| download | linux-58990986f1cba40c23c0c10592ace08616de3ffa.tar.xz | |
crypto: x86/glue_helper - use le128 instead of u128 for CTR mode
'u128' currently used for CTR mode is on little-endian 'long long' swapped
and would require extra swap operations by SSE/AVX code. Use of le128
instead of u128 allows IV calculations to be done with vector registers
easier.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86/crypto/serpent_avx_glue.c')
| -rw-r--r-- | arch/x86/crypto/serpent_avx_glue.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/x86/crypto/serpent_avx_glue.c b/arch/x86/crypto/serpent_avx_glue.c index 3f543a04cf1e..2aa31ade1e68 100644 --- a/arch/x86/crypto/serpent_avx_glue.c +++ b/arch/x86/crypto/serpent_avx_glue.c @@ -56,19 +56,19 @@ static void serpent_decrypt_cbc_xway(void *ctx, u128 *dst, const u128 *src) u128_xor(dst + (j + 1), dst + (j + 1), ivs + j); } -static void serpent_crypt_ctr(void *ctx, u128 *dst, const u128 *src, u128 *iv) +static void serpent_crypt_ctr(void *ctx, u128 *dst, const u128 *src, le128 *iv) { be128 ctrblk; - u128_to_be128(&ctrblk, iv); - u128_inc(iv); + le128_to_be128(&ctrblk, iv); + le128_inc(iv); __serpent_encrypt(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk); u128_xor(dst, src, (u128 *)&ctrblk); } static void serpent_crypt_ctr_xway(void *ctx, u128 *dst, const u128 *src, - u128 *iv) + le128 *iv) { be128 ctrblks[SERPENT_PARALLEL_BLOCKS]; unsigned int i; @@ -77,8 +77,8 @@ static void serpent_crypt_ctr_xway(void *ctx, u128 *dst, const u128 *src, if (dst != src) dst[i] = src[i]; - u128_to_be128(&ctrblks[i], iv); - u128_inc(iv); + le128_to_be128(&ctrblks[i], iv); + le128_inc(iv); } serpent_enc_blk_xway_xor(ctx, (u8 *)dst, (u8 *)ctrblks); |