diff options
Diffstat (limited to 'src/crypto/mac/ghash/pclmulqdq')
| -rw-r--r-- | src/crypto/mac/ghash/pclmulqdq/ghash_pclmulqdq_impl.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/src/crypto/mac/ghash/pclmulqdq/ghash_pclmulqdq_impl.c b/src/crypto/mac/ghash/pclmulqdq/ghash_pclmulqdq_impl.c index e797d3c..7b162ba 100644 --- a/src/crypto/mac/ghash/pclmulqdq/ghash_pclmulqdq_impl.c +++ b/src/crypto/mac/ghash/pclmulqdq/ghash_pclmulqdq_impl.c @@ -60,14 +60,16 @@ fastd_mac_state_t* fastd_ghash_pclmulqdq_init_state(fastd_context_t *ctx UNUSED, static inline v2di gmul(v2di v, v2di h) { /* multiply */ - v2di tmp00, tmp10, tmp01, tmp11; - tmp00.vll = __builtin_ia32_pclmulqdq128(v.vll, h.vll, 0x00); - tmp01.vll = __builtin_ia32_pclmulqdq128(v.vll, h.vll, 0x01); - tmp10.vll = __builtin_ia32_pclmulqdq128(v.vll, h.vll, 0x10); - tmp11.vll = __builtin_ia32_pclmulqdq128(v.vll, h.vll, 0x11); - - v2di pl = {{tmp11.e[0] ^ tmp01.e[1] ^ tmp10.e[1], tmp11.e[1]}}; - v2di ph = {{tmp00.e[0], tmp00.e[1] ^ tmp01.e[0] ^ tmp10.e[0]}}; + v2di z0, z1, z2; + z0.vll = __builtin_ia32_pclmulqdq128(v.vll, h.vll, 0x11); + z2.vll = __builtin_ia32_pclmulqdq128(v.vll, h.vll, 0x00); + + v2di tmp = {{v.e[0] ^ v.e[1], h.e[0] ^ h.e[1]}}; + z1.vll = __builtin_ia32_pclmulqdq128(tmp.vll, tmp.vll, 0x01); + z1.v ^= z0.v ^ z2.v; + + v2di pl = {{z0.e[0] ^ z1.e[1], z0.e[1]}}; + v2di ph = {{z2.e[0], z2.e[1] ^ z1.e[0]}}; pl = shl(pl, 1); pl.e[0] |= ph.e[1] >> 63; |