Add SIMECK-64 SSSE3 implementation (GH #675)

1 files changed, 323 insertions, 0 deletions

diff --git a/simeck-simd.cpp b/simeck-simd.cpp
new file mode 100644
index 00000000..1994a911
--- /dev/null
+++ b/simeck-simd.cpp
@@ -0,0 +1,323 @@
+// simeck-simd.cpp - written and placed in the public domain by Jeffrey Walton

+//

+//    This source file uses intrinsics and built-ins to gain access to

+//    SSSE3, ARM NEON and ARMv8a, and Power7 Altivec instructions. A separate

+//    source file is needed because additional CXXFLAGS are required to enable

+//    the appropriate instructions sets in some build configurations.

+

+#include "pch.h"

+#include "config.h"

+

+#include "simeck.h"

+#include "misc.h"

+#include "adv-simd.h"

+

+// Uncomment for benchmarking C++ against SSE or NEON.

+// Do so in both simon.cpp and simon-simd.cpp.

+// #undef CRYPTOPP_SSSE3_AVAILABLE

+// #undef CRYPTOPP_ARM_NEON_AVAILABLE

+

+#if (CRYPTOPP_SSSE3_AVAILABLE)

+# include <pmmintrin.h>

+# include <tmmintrin.h>

+#endif

+

+#if defined(__AVX512F__) && defined(__AVX512VL__)

+# define CRYPTOPP_AVX512_ROTATE 1

+# include <immintrin.h>

+#endif

+

+ANONYMOUS_NAMESPACE_BEGIN

+

+using CryptoPP::word16;

+using CryptoPP::word32;

+

+#if (CRYPTOPP_SSSE3_AVAILABLE)

+

+//////////////////////////////////////////////////////////////////////////

+

+template <unsigned int R>

+inline __m128i RotateLeft32(const __m128i& val)

+{

+#if defined(CRYPTOPP_AVX512_ROTATE)

+    return _mm_rol_epi32(val, R);

+#else

+    return _mm_or_si128(

+        _mm_slli_epi32(val, R), _mm_srli_epi32(val, 32-R));

+#endif

+}

+

+template <unsigned int R>

+inline __m128i RotateRight32(const __m128i& val)

+{

+#if defined(CRYPTOPP_AVX512_ROTATE)

+    return _mm_ror_epi32(val, R);

+#else

+    return _mm_or_si128(

+        _mm_slli_epi32(val, 32-R), _mm_srli_epi32(val, R));

+#endif

+}

+

+// Faster than two Shifts and an Or. Thanks to Louis Wingers and Bryan Weeks.

+template <>

+inline __m128i RotateLeft32<8>(const __m128i& val)

+{

+    const __m128i mask = _mm_set_epi8(14,13,12,15, 10,9,8,11, 6,5,4,7, 2,1,0,3);

+    return _mm_shuffle_epi8(val, mask);

+}

+

+// Faster than two Shifts and an Or. Thanks to Louis Wingers and Bryan Weeks.

+template <>

+inline __m128i RotateRight32<8>(const __m128i& val)

+{

+    const __m128i mask = _mm_set_epi8(12,15,14,13, 8,11,10,9, 4,7,6,5, 0,3,2,1);

+    return _mm_shuffle_epi8(val, mask);

+}

+

+template <unsigned int IDX>

+inline __m128i UnpackXMM(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d)

+{

+    // Should not be instantiated

+    CRYPTOPP_ASSERT(0);;

+    return _mm_setzero_si128();

+}

+

+template <>

+inline __m128i UnpackXMM<0>(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d)

+{

+    // The shuffle converts to and from little-endian for SSE. A specialized

+    // SIMECK implementation can avoid the shuffle by framing the data for

+    // encryption, decryption and benchmarks. The library cannot take the

+    // speed-up because of the byte oriented API.

+    const __m128i r1 = _mm_unpacklo_epi32(a, b);

+    const __m128i r2 = _mm_unpacklo_epi32(c, d);

+    return _mm_shuffle_epi8(_mm_unpacklo_epi64(r1, r2),

+        _mm_set_epi8(12,13,14,15, 8,9,10,11, 4,5,6,7, 0,1,2,3));

+}

+

+template <>

+inline __m128i UnpackXMM<1>(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d)

+{

+    // The shuffle converts to and from little-endian for SSE. A specialized

+    // SIMECK implementation can avoid the shuffle by framing the data for

+    // encryption, decryption and benchmarks. The library cannot take the

+    // speed-up because of the byte oriented API.

+    const __m128i r1 = _mm_unpacklo_epi32(a, b);

+    const __m128i r2 = _mm_unpacklo_epi32(c, d);

+    return _mm_shuffle_epi8(_mm_unpackhi_epi64(r1, r2),

+        _mm_set_epi8(12,13,14,15, 8,9,10,11, 4,5,6,7, 0,1,2,3));

+}

+

+template <>

+inline __m128i UnpackXMM<2>(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d)

+{

+    // The shuffle converts to and from little-endian for SSE. A specialized

+    // SIMECK implementation can avoid the shuffle by framing the data for

+    // encryption, decryption and benchmarks. The library cannot take the

+    // speed-up because of the byte oriented API.

+    const __m128i r1 = _mm_unpackhi_epi32(a, b);

+    const __m128i r2 = _mm_unpackhi_epi32(c, d);

+    return _mm_shuffle_epi8(_mm_unpacklo_epi64(r1, r2),

+        _mm_set_epi8(12,13,14,15, 8,9,10,11, 4,5,6,7, 0,1,2,3));

+}

+

+template <>

+inline __m128i UnpackXMM<3>(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d)

+{

+    // The shuffle converts to and from little-endian for SSE. A specialized

+    // SIMECK implementation can avoid the shuffle by framing the data for

+    // encryption, decryption and benchmarks. The library cannot take the

+    // speed-up because of the byte oriented API.

+    const __m128i r1 = _mm_unpackhi_epi32(a, b);

+    const __m128i r2 = _mm_unpackhi_epi32(c, d);

+    return _mm_shuffle_epi8(_mm_unpackhi_epi64(r1, r2),

+        _mm_set_epi8(12,13,14,15, 8,9,10,11, 4,5,6,7, 0,1,2,3));

+}

+

+template <unsigned int IDX>

+inline __m128i UnpackXMM(const __m128i& v)

+{

+    // Should not be instantiated

+    CRYPTOPP_ASSERT(0);;

+    return _mm_setzero_si128();

+}

+

+template <>

+inline __m128i UnpackXMM<0>(const __m128i& v)

+{

+    return _mm_shuffle_epi8(v, _mm_set_epi8(0,1,2,3, 0,1,2,3, 0,1,2,3, 0,1,2,3));

+}

+

+template <>

+inline __m128i UnpackXMM<1>(const __m128i& v)

+{

+    return _mm_shuffle_epi8(v, _mm_set_epi8(4,5,6,7, 4,5,6,7, 4,5,6,7, 4,5,6,7));

+}

+

+template <>

+inline __m128i UnpackXMM<2>(const __m128i& v)

+{

+    return _mm_shuffle_epi8(v, _mm_set_epi8(8,9,10,11, 8,9,10,11, 8,9,10,11, 8,9,10,11));

+}

+

+template <>

+inline __m128i UnpackXMM<3>(const __m128i& v)

+{

+    return _mm_shuffle_epi8(v, _mm_set_epi8(12,13,14,15, 12,13,14,15, 12,13,14,15, 12,13,14,15));

+}

+

+template <unsigned int IDX>

+inline __m128i RepackXMM(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d)

+{

+    return UnpackXMM<IDX>(a, b, c, d);

+}

+

+template <unsigned int IDX>

+inline __m128i RepackXMM(const __m128i& v)

+{

+    return UnpackXMM<IDX>(v);

+}

+

+inline void SIMECK64_Encrypt(__m128i &a, __m128i &b,

+    __m128i &c, __m128i &d, const __m128i key)

+{

+    //temp = left

+    //left = (left & rotlConstant<5>(left)) ^ rotlConstant<1>(left) ^ right ^ key;

+    //right = left

+

+    const __m128i s = a, t = c;

+    a = _mm_xor_si128(_mm_and_si128(a, RotateLeft32<5>(a)), RotateLeft32<1>(a));

+    c = _mm_xor_si128(_mm_and_si128(c, RotateLeft32<5>(c)), RotateLeft32<1>(c));

+    a = _mm_xor_si128(a, _mm_xor_si128(b, key));

+    c = _mm_xor_si128(c, _mm_xor_si128(d, key));

+    b = s; d = t;

+}

+

+inline __m128i SIMECK64_LoadKey(const word32* subkey)

+{

+    float f[2];

+    std::memcpy(f, subkey, 4);

+    return _mm_castps_si128(_mm_load_ps1(f));

+}

+

+inline void SIMECK64_Enc_Block(__m128i &block0,

+    const word32 *subkeys, unsigned int rounds)

+{

+    // Rearrange the data for vectorization. UnpackXMM includes a

+    // little-endian swap for SSE. Thanks to Peter Cordes for help

+    // with packing and unpacking.

+    // [A1 A2 A3 A4][B1 B2 B3 B4] ... => [A1 B1 C1 D1][A2 B2 C2 D2] ...

+    __m128i a = UnpackXMM<0>(block0);

+    __m128i b = UnpackXMM<1>(block0);

+    __m128i c = UnpackXMM<2>(block0);

+    __m128i d = UnpackXMM<3>(block0);

+

+    for (int i=0; i<static_cast<int>(rounds); ++i)

+        SIMECK64_Encrypt(a, b, c, d, SIMECK64_LoadKey(subkeys + i));

+

+    // [A1 B1 C1 D1][A2 B2 C2 D2] ... => [A1 A2 A3 A4][B1 B2 B3 B4] ...

+    block0 = RepackXMM<0>(a,b,c,d);

+}

+

+inline void SIMECK64_Dec_Block(__m128i &block0,

+    const word32 *subkeys, unsigned int rounds)

+{

+    // SIMECK requires a word swap on the decryption side

+    __m128i w = _mm_shuffle_epi32(block0, _MM_SHUFFLE(2, 3, 0, 1));

+

+    // Rearrange the data for vectorization. UnpackXMM includes a

+    // little-endian swap for SSE. Thanks to Peter Cordes for help

+    // with packing and unpacking.

+    // [A1 A2 A3 A4][B1 B2 B3 B4] ... => [A1 B1 C1 D1][A2 B2 C2 D2] ...

+    __m128i a = UnpackXMM<0>(w);

+    __m128i b = UnpackXMM<1>(w);

+    __m128i c = UnpackXMM<2>(w);

+    __m128i d = UnpackXMM<3>(w);

+

+    for (int i = static_cast<int>(rounds)-1; i >= 0; --i)

+        SIMECK64_Encrypt(a, b, c, d, SIMECK64_LoadKey(subkeys + i));

+

+    // [A1 B1 C1 D1][A2 B2 C2 D2] ... => [A1 A2 A3 A4][B1 B2 B3 B4] ...

+    w = RepackXMM<0>(a,b,c,d);

+

+    block0 = _mm_shuffle_epi32(w, _MM_SHUFFLE(2, 3, 0, 1));

+}

+

+inline void SIMECK64_Enc_4_Blocks(__m128i &block0, __m128i &block1,

+    __m128i &block2, __m128i &block3, const word32 *subkeys, unsigned int rounds)

+{

+    // Rearrange the data for vectorization. UnpackXMM includes a

+    // little-endian swap for SSE. Thanks to Peter Cordes for help

+    // with packing and unpacking.

+    // [A1 A2 A3 A4][B1 B2 B3 B4] ... => [A1 B1 C1 D1][A2 B2 C2 D2] ...

+    __m128i a = UnpackXMM<0>(block0, block1, block2, block3);

+    __m128i b = UnpackXMM<1>(block0, block1, block2, block3);

+    __m128i c = UnpackXMM<2>(block0, block1, block2, block3);

+    __m128i d = UnpackXMM<3>(block0, block1, block2, block3);

+

+    for (int i=0; i<static_cast<int>(rounds); ++i)

+        SIMECK64_Encrypt(a, b, c, d, SIMECK64_LoadKey(subkeys + i));

+

+    // [A1 B1 C1 D1][A2 B2 C2 D2] ... => [A1 A2 A3 A4][B1 B2 B3 B4] ...

+    block0 = RepackXMM<0>(a, b, c, d);

+    block1 = RepackXMM<1>(a, b, c, d);

+    block2 = RepackXMM<2>(a, b, c, d);

+    block3 = RepackXMM<3>(a, b, c, d);

+}

+

+inline void SIMECK64_Dec_4_Blocks(__m128i &block0, __m128i &block1,

+    __m128i &block2, __m128i &block3, const word32 *subkeys, unsigned int rounds)

+{

+    // SIMECK requires a word swap on the decryption side

+    __m128i w = _mm_shuffle_epi32(block0, _MM_SHUFFLE(2, 3, 0, 1));

+    __m128i x = _mm_shuffle_epi32(block1, _MM_SHUFFLE(2, 3, 0, 1));

+    __m128i y = _mm_shuffle_epi32(block2, _MM_SHUFFLE(2, 3, 0, 1));

+    __m128i z = _mm_shuffle_epi32(block3, _MM_SHUFFLE(2, 3, 0, 1));

+

+    // Rearrange the data for vectorization. UnpackXMM includes a

+    // little-endian swap for SSE. Thanks to Peter Cordes for help

+    // with packing and unpacking.

+    // [A1 A2 A3 A4][B1 B2 B3 B4] ... => [A1 B1 C1 D1][A2 B2 C2 D2] ...

+    __m128i a = UnpackXMM<0>(w, x, y, z);

+    __m128i b = UnpackXMM<1>(w, x, y, z);

+    __m128i c = UnpackXMM<2>(w, x, y, z);

+    __m128i d = UnpackXMM<3>(w, x, y, z);

+

+    for (int i = static_cast<int>(rounds)-1; i >= 0; --i)

+        SIMECK64_Encrypt(a, b, c, d, SIMECK64_LoadKey(subkeys + i));

+

+    // [A1 B1 C1 D1][A2 B2 C2 D2] ... => [A1 A2 A3 A4][B1 B2 B3 B4] ...

+    w = RepackXMM<0>(a, b, c, d);

+    x = RepackXMM<1>(a, b, c, d);

+    y = RepackXMM<2>(a, b, c, d);

+    z = RepackXMM<3>(a, b, c, d);

+

+    block0 = _mm_shuffle_epi32(w, _MM_SHUFFLE(2, 3, 0, 1));

+    block1 = _mm_shuffle_epi32(x, _MM_SHUFFLE(2, 3, 0, 1));

+    block2 = _mm_shuffle_epi32(y, _MM_SHUFFLE(2, 3, 0, 1));

+    block3 = _mm_shuffle_epi32(z, _MM_SHUFFLE(2, 3, 0, 1));

+}

+

+#endif  // CRYPTOPP_SSSE3_AVAILABLE

+

+ANONYMOUS_NAMESPACE_END

+

+NAMESPACE_BEGIN(CryptoPP)

+

+#if defined(CRYPTOPP_SSSE3_AVAILABLE)

+size_t SIMECK64_Enc_AdvancedProcessBlocks_SSSE3(const word32* subKeys, size_t rounds,

+    const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags)

+{

+    return AdvancedProcessBlocks64_4x1_SSE(SIMECK64_Enc_Block, SIMECK64_Enc_4_Blocks,

+        subKeys, rounds, inBlocks, xorBlocks, outBlocks, length, flags);

+}

+

+size_t SIMECK64_Dec_AdvancedProcessBlocks_SSSE3(const word32* subKeys, size_t rounds,

+    const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags)

+{

+    return AdvancedProcessBlocks64_4x1_SSE(SIMECK64_Dec_Block, SIMECK64_Dec_4_Blocks,

+        subKeys, rounds, inBlocks, xorBlocks, outBlocks, length, flags);

+}

+#endif // CRYPTOPP_SSSE3_AVAILABLE

+

+NAMESPACE_END