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Fold shuffles after loads for SHACAL2

pull/461/head
Jeffrey Walton 2017-08-16 09:07:01 -04:00
parent 2090d0b0a6
commit 429a49859a
No known key found for this signature in database
GPG Key ID: B36AB348921B1838
1 changed files with 12 additions and 17 deletions
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23
shacal2-simd.cpp
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@ -51,15 +51,13 @@ void SHACAL2_Enc_ProcessAndXorBlock_SHANI(const word32* subKeys, const byte *inB
CRYPTOPP_ASSERT(inBlock); CRYPTOPP_ASSERT(inBlock);
CRYPTOPP_ASSERT(outBlock); CRYPTOPP_ASSERT(outBlock);
__m128i B0 = _mm_loadu_si128(CONST_M128_CAST(inBlock + 0)); // MASK1 produces the CDAB arrangement
__m128i B1 = _mm_loadu_si128(CONST_M128_CAST(inBlock + 16)); const __m128i MASK1 = _mm_set_epi8(8,9,10,11, 12,13,14,15, 0,1,2,3, 4,5,6,7);
__m128i MASK = _mm_set_epi64x(0x0C0D0E0F08090A0B, 0x0405060700010203); __m128i B0 = _mm_shuffle_epi8(_mm_loadu_si128(CONST_M128_CAST(inBlock + 0)), MASK1);
B0 = _mm_shuffle_epi8(B0, MASK); // MASK2 produces the EFGH arrangement
B1 = _mm_shuffle_epi8(B1, MASK); const __m128i MASK2 = _mm_set_epi8(0,1,2,3, 4,5,6,7, 8,9,10,11, 12,13,14,15);
__m128i B1 = _mm_shuffle_epi8(_mm_loadu_si128(CONST_M128_CAST(inBlock + 16)), MASK2);
B0 = _mm_shuffle_epi32(B0, 0xB1); // CDAB
B1 = _mm_shuffle_epi32(B1, 0x1B); // EFGH
__m128i TMP = _mm_alignr_epi8(B0, B1, 8); // ABEF __m128i TMP = _mm_alignr_epi8(B0, B1, 8); // ABEF
B1 = _mm_blend_epi16(B1, B0, 0xF0); // CDGH B1 = _mm_blend_epi16(B1, B0, 0xF0); // CDGH
@ -78,12 +76,9 @@ void SHACAL2_Enc_ProcessAndXorBlock_SHANI(const word32* subKeys, const byte *inB
B0 = _mm_blend_epi16(TMP, B1, 0xF0); // DCBA B0 = _mm_blend_epi16(TMP, B1, 0xF0); // DCBA
B1 = _mm_alignr_epi8(B1, TMP, 8); // ABEF B1 = _mm_alignr_epi8(B1, TMP, 8); // ABEF
B0 = _mm_shuffle_epi8(B0, MASK); const __m128i MASK3 = _mm_set_epi8(12,13,14,15, 8,9,10,11, 4,5,6,7, 0,1,2,3);
B1 = _mm_shuffle_epi8(B1, MASK); B0 = _mm_shuffle_epi8(B0, MASK3);
B1 = _mm_shuffle_epi8(B1, MASK3);
// Save state
//_mm_storeu_si128(M128_CAST(outBlock + 0), B0);
//_mm_storeu_si128(M128_CAST(outBlock + 16), B1);
if (xorBlock) if (xorBlock)
{ {