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| author | Jeffrey Walton <noloader@gmail.com> | 2018-11-10 08:00:14 -0500 |
|---|---|---|
| committer | Jeffrey Walton <noloader@gmail.com> | 2018-11-10 08:00:14 -0500 |
| commit | 896225069db7f34e752dd7b7bb401052c6b7cb17 (patch) | |
| tree | 8d4eabb2bd304b6fe9168aac8fdc28618f3212f8 /cham_simd.cpp | |
| parent | 776a2195bd78c80130b1809b22a5e4d3aecb5b95 (diff) | |
| download | cryptopp-git-896225069db7f34e752dd7b7bb401052c6b7cb17.tar.gz | |
Rename files with dashes to underscores (GH #736)
Also see https://groups.google.com/forum/#!topic/cryptopp-users/HBz-6gZZFOA on the mailing list
Diffstat (limited to 'cham_simd.cpp')
| -rw-r--r-- | cham_simd.cpp | 1092 |
1 files changed, 1092 insertions, 0 deletions
diff --git a/cham_simd.cpp b/cham_simd.cpp new file mode 100644 index 00000000..b56e6d76 --- /dev/null +++ b/cham_simd.cpp @@ -0,0 +1,1092 @@ +// cham_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 "cham.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 defined(CRYPTOPP_SSE2_AVAILABLE)
+# define CRYPTOPP_AVX512_ROTATE 1
+# include <xmmintrin.h>
+# include <emmintrin.h>
+#endif
+
+#if (CRYPTOPP_SSSE3_AVAILABLE)
+# include <pmmintrin.h>
+# include <tmmintrin.h>
+#endif
+
+#if defined(__XOP__)
+# include <ammintrin.h>
+#endif
+
+// Squash MS LNK4221 and libtool warnings
+extern const char CHAM_SIMD_FNAME[] = __FILE__;
+
+ANONYMOUS_NAMESPACE_BEGIN
+
+using CryptoPP::word16;
+using CryptoPP::word32;
+
+#if (CRYPTOPP_SSSE3_AVAILABLE)
+
+//////////////////////////////////////////////////////////////////////////
+
+NAMESPACE_BEGIN(W16) // CHAM64, 16-bit word size
+
+template <unsigned int R>
+inline __m128i RotateLeft16(const __m128i& val)
+{
+#if defined(__XOP__)
+ return _mm_roti_epi16(val, R);
+#else
+ return _mm_or_si128(
+ _mm_slli_epi16(val, R), _mm_srli_epi16(val, 16-R));
+#endif
+}
+
+template <unsigned int R>
+inline __m128i RotateRight16(const __m128i& val)
+{
+#if defined(__XOP__)
+ return _mm_roti_epi16(val, 16-R);
+#else
+ return _mm_or_si128(
+ _mm_slli_epi16(val, 16-R), _mm_srli_epi16(val, R));
+#endif
+}
+
+// Faster than two Shifts and an Or. Thanks to Louis Wingers and Bryan Weeks.
+template <>
+inline __m128i RotateLeft16<8>(const __m128i& val)
+{
+#if defined(__XOP__)
+ return _mm_roti_epi16(val, 8);
+#else
+ const __m128i mask = _mm_set_epi8(14,15, 12,13, 10,11, 8,9, 6,7, 4,5, 2,3, 0,1);
+ return _mm_shuffle_epi8(val, mask);
+#endif
+}
+
+// Faster than two Shifts and an Or. Thanks to Louis Wingers and Bryan Weeks.
+template <>
+inline __m128i RotateRight16<8>(const __m128i& val)
+{
+#if defined(__XOP__)
+ return _mm_roti_epi16(val, 16-8);
+#else
+ const __m128i mask = _mm_set_epi8(14,15, 12,13, 10,11, 8,9, 6,7, 4,5, 2,3, 0,1);
+ return _mm_shuffle_epi8(val, mask);
+#endif
+}
+
+template <unsigned int IDX>
+inline __m128i UnpackXMM(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d,
+ const __m128i& e, const __m128i& f, const __m128i& g, const __m128i& h)
+{
+ // Should not be instantiated
+ CRYPTOPP_UNUSED(a); CRYPTOPP_UNUSED(b);
+ CRYPTOPP_UNUSED(c); CRYPTOPP_UNUSED(d);
+ CRYPTOPP_UNUSED(e); CRYPTOPP_UNUSED(f);
+ CRYPTOPP_UNUSED(g); CRYPTOPP_UNUSED(h);
+ CRYPTOPP_ASSERT(0);
+ return _mm_setzero_si128();
+}
+
+template <>
+inline __m128i UnpackXMM<0>(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d,
+ const __m128i& e, const __m128i& f, const __m128i& g, const __m128i& h)
+{
+ // The shuffle converts to and from little-endian for SSE. A specialized
+ // CHAM 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_epi16(a, b);
+ const __m128i r2 = _mm_unpacklo_epi16(c, d);
+ const __m128i r3 = _mm_unpacklo_epi16(e, f);
+ const __m128i r4 = _mm_unpacklo_epi16(g, h);
+
+ const __m128i r5 = _mm_unpacklo_epi32(r1, r2);
+ const __m128i r6 = _mm_unpacklo_epi32(r3, r4);
+ return _mm_shuffle_epi8(_mm_unpacklo_epi64(r5, r6),
+ _mm_set_epi8(14,15,12,13, 10,11,8,9, 6,7,4,5, 2,3,0,1));
+}
+
+template <>
+inline __m128i UnpackXMM<1>(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d,
+ const __m128i& e, const __m128i& f, const __m128i& g, const __m128i& h)
+{
+ // The shuffle converts to and from little-endian for SSE. A specialized
+ // CHAM 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_epi16(a, b);
+ const __m128i r2 = _mm_unpacklo_epi16(c, d);
+ const __m128i r3 = _mm_unpacklo_epi16(e, f);
+ const __m128i r4 = _mm_unpacklo_epi16(g, h);
+
+ const __m128i r5 = _mm_unpacklo_epi32(r1, r2);
+ const __m128i r6 = _mm_unpacklo_epi32(r3, r4);
+ return _mm_shuffle_epi8(_mm_unpackhi_epi64(r5, r6),
+ _mm_set_epi8(14,15,12,13, 10,11,8,9, 6,7,4,5, 2,3,0,1));
+}
+
+template <>
+inline __m128i UnpackXMM<2>(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d,
+ const __m128i& e, const __m128i& f, const __m128i& g, const __m128i& h)
+{
+ // The shuffle converts to and from little-endian for SSE. A specialized
+ // CHAM 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_epi16(a, b);
+ const __m128i r2 = _mm_unpacklo_epi16(c, d);
+ const __m128i r3 = _mm_unpacklo_epi16(e, f);
+ const __m128i r4 = _mm_unpacklo_epi16(g, h);
+
+ const __m128i r5 = _mm_unpackhi_epi32(r1, r2);
+ const __m128i r6 = _mm_unpackhi_epi32(r3, r4);
+ return _mm_shuffle_epi8(_mm_unpacklo_epi64(r5, r6),
+ _mm_set_epi8(14,15,12,13, 10,11,8,9, 6,7,4,5, 2,3,0,1));
+}
+
+template <>
+inline __m128i UnpackXMM<3>(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d,
+ const __m128i& e, const __m128i& f, const __m128i& g, const __m128i& h)
+{
+ // The shuffle converts to and from little-endian for SSE. A specialized
+ // CHAM 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_epi16(a, b);
+ const __m128i r2 = _mm_unpacklo_epi16(c, d);
+ const __m128i r3 = _mm_unpacklo_epi16(e, f);
+ const __m128i r4 = _mm_unpacklo_epi16(g, h);
+
+ const __m128i r5 = _mm_unpackhi_epi32(r1, r2);
+ const __m128i r6 = _mm_unpackhi_epi32(r3, r4);
+ return _mm_shuffle_epi8(_mm_unpackhi_epi64(r5, r6),
+ _mm_set_epi8(14,15,12,13, 10,11,8,9, 6,7,4,5, 2,3,0,1));
+}
+
+template <>
+inline __m128i UnpackXMM<4>(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d,
+ const __m128i& e, const __m128i& f, const __m128i& g, const __m128i& h)
+{
+ // The shuffle converts to and from little-endian for SSE. A specialized
+ // CHAM 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_epi16(a, b);
+ const __m128i r2 = _mm_unpackhi_epi16(c, d);
+ const __m128i r3 = _mm_unpackhi_epi16(e, f);
+ const __m128i r4 = _mm_unpackhi_epi16(g, h);
+
+ const __m128i r5 = _mm_unpacklo_epi32(r1, r2);
+ const __m128i r6 = _mm_unpacklo_epi32(r3, r4);
+ return _mm_shuffle_epi8(_mm_unpacklo_epi64(r5, r6),
+ _mm_set_epi8(14,15,12,13, 10,11,8,9, 6,7,4,5, 2,3,0,1));
+}
+
+template <>
+inline __m128i UnpackXMM<5>(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d,
+ const __m128i& e, const __m128i& f, const __m128i& g, const __m128i& h)
+{
+ // The shuffle converts to and from little-endian for SSE. A specialized
+ // CHAM 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_epi16(a, b);
+ const __m128i r2 = _mm_unpackhi_epi16(c, d);
+ const __m128i r3 = _mm_unpackhi_epi16(e, f);
+ const __m128i r4 = _mm_unpackhi_epi16(g, h);
+
+ const __m128i r5 = _mm_unpacklo_epi32(r1, r2);
+ const __m128i r6 = _mm_unpacklo_epi32(r3, r4);
+ return _mm_shuffle_epi8(_mm_unpackhi_epi64(r5, r6),
+ _mm_set_epi8(14,15,12,13, 10,11,8,9, 6,7,4,5, 2,3,0,1));
+}
+
+template <>
+inline __m128i UnpackXMM<6>(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d,
+ const __m128i& e, const __m128i& f, const __m128i& g, const __m128i& h)
+{
+ // The shuffle converts to and from little-endian for SSE. A specialized
+ // CHAM 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_epi16(a, b);
+ const __m128i r2 = _mm_unpackhi_epi16(c, d);
+ const __m128i r3 = _mm_unpackhi_epi16(e, f);
+ const __m128i r4 = _mm_unpackhi_epi16(g, h);
+
+ const __m128i r5 = _mm_unpackhi_epi32(r1, r2);
+ const __m128i r6 = _mm_unpackhi_epi32(r3, r4);
+ return _mm_shuffle_epi8(_mm_unpacklo_epi64(r5, r6),
+ _mm_set_epi8(14,15,12,13, 10,11,8,9, 6,7,4,5, 2,3,0,1));
+}
+
+template <>
+inline __m128i UnpackXMM<7>(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d,
+ const __m128i& e, const __m128i& f, const __m128i& g, const __m128i& h)
+{
+ // The shuffle converts to and from little-endian for SSE. A specialized
+ // CHAM 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_epi16(a, b);
+ const __m128i r2 = _mm_unpackhi_epi16(c, d);
+ const __m128i r3 = _mm_unpackhi_epi16(e, f);
+ const __m128i r4 = _mm_unpackhi_epi16(g, h);
+
+ const __m128i r5 = _mm_unpackhi_epi32(r1, r2);
+ const __m128i r6 = _mm_unpackhi_epi32(r3, r4);
+ return _mm_shuffle_epi8(_mm_unpackhi_epi64(r5, r6),
+ _mm_set_epi8(14,15,12,13, 10,11,8,9, 6,7,4,5, 2,3,0,1));
+}
+
+template <unsigned int IDX>
+inline __m128i UnpackXMM(const __m128i& v)
+{
+ // Should not be instantiated
+ CRYPTOPP_UNUSED(v); 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, 0,1, 0,1, 0,1, 0,1, 0,1, 0,1, 0,1));
+}
+
+template <>
+inline __m128i UnpackXMM<1>(const __m128i& v)
+{
+ return _mm_shuffle_epi8(v, _mm_set_epi8(2,3, 2,3, 2,3, 2,3, 2,3, 2,3, 2,3, 2,3));
+}
+
+template <>
+inline __m128i UnpackXMM<2>(const __m128i& v)
+{
+ return _mm_shuffle_epi8(v, _mm_set_epi8(4,5, 4,5, 4,5, 4,5, 4,5, 4,5, 4,5, 4,5));
+}
+
+template <>
+inline __m128i UnpackXMM<3>(const __m128i& v)
+{
+ return _mm_shuffle_epi8(v, _mm_set_epi8(6,7, 6,7, 6,7, 6,7, 6,7, 6,7, 6,7, 6,7));
+}
+
+template <>
+inline __m128i UnpackXMM<4>(const __m128i& v)
+{
+ return _mm_shuffle_epi8(v, _mm_set_epi8(8,9, 8,9, 8,9, 8,9, 8,9, 8,9, 8,9, 8,9));
+}
+
+template <>
+inline __m128i UnpackXMM<5>(const __m128i& v)
+{
+ return _mm_shuffle_epi8(v, _mm_set_epi8(10,11, 10,11, 10,11, 10,11, 10,11, 10,11, 10,11, 10,11));
+}
+
+template <>
+inline __m128i UnpackXMM<6>(const __m128i& v)
+{
+ return _mm_shuffle_epi8(v, _mm_set_epi8(12,13, 12,13, 12,13, 12,13, 12,13, 12,13, 12,13, 12,13));
+}
+
+template <>
+inline __m128i UnpackXMM<7>(const __m128i& v)
+{
+ return _mm_shuffle_epi8(v, _mm_set_epi8(14,15, 14,15, 14,15, 14,15, 14,15, 14,15, 14,15, 14,15));
+}
+
+template <unsigned int IDX>
+inline __m128i UnpackXMM(const __m128i& a, const __m128i& b)
+{
+ const __m128i& z = _mm_setzero_si128();
+ return UnpackXMM<IDX>(a, b, z, z, z, z, z, z);
+}
+
+template <unsigned int IDX>
+inline __m128i RepackXMM(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d,
+ const __m128i& e, const __m128i& f, const __m128i& g, const __m128i& h)
+{
+ return UnpackXMM<IDX>(a, b, c, d, e, f, g, h);
+}
+
+template <unsigned int IDX>
+inline __m128i RepackXMM(const __m128i& v)
+{
+ return UnpackXMM<IDX>(v);
+}
+
+inline void CHAM64_Enc_Block(__m128i &block0,
+ const word16 *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 .. A6 A7][B1 B2 .. B6 B7] ... => [A1 B1 .. G1 H1][A2 B2 .. G2 H2] ...
+ __m128i a = UnpackXMM<0>(block0);
+ __m128i b = UnpackXMM<1>(block0);
+ __m128i c = UnpackXMM<2>(block0);
+ __m128i d = UnpackXMM<3>(block0);
+ __m128i e = UnpackXMM<4>(block0);
+ __m128i f = UnpackXMM<5>(block0);
+ __m128i g = UnpackXMM<6>(block0);
+ __m128i h = UnpackXMM<7>(block0);
+
+ const unsigned int rounds = 80;
+ __m128i counter = _mm_set_epi16(0,0,0,0,0,0,0,0);
+ __m128i increment = _mm_set_epi16(1,1,1,1,1,1,1,1);
+
+ const unsigned int MASK = 15;
+ for (int i=0; i<static_cast<int>(rounds); i+=4)
+ {
+ __m128i k, kr, t1, t2, t3, t4;
+ k = _mm_castpd_si128(_mm_load_sd((const double*)(&subkeys[(i+0) & MASK])));
+
+ // Shuffle out key
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(1,0,1,0, 1,0,1,0, 1,0,1,0, 1,0,1,0));
+
+ t1 = _mm_xor_si128(a, counter);
+ t3 = _mm_xor_si128(e, counter);
+ t2 = _mm_xor_si128(RotateLeft16<1>(b), kr);
+ t4 = _mm_xor_si128(RotateLeft16<1>(f), kr);
+ a = RotateLeft16<8>(_mm_add_epi16(t1, t2));
+ e = RotateLeft16<8>(_mm_add_epi16(t3, t4));
+
+ counter = _mm_add_epi16(counter, increment);
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(3,2,3,2, 3,2,3,2, 3,2,3,2, 3,2,3,2));
+
+ t1 = _mm_xor_si128(b, counter);
+ t3 = _mm_xor_si128(f, counter);
+ t2 = _mm_xor_si128(RotateLeft16<8>(c), kr);
+ t4 = _mm_xor_si128(RotateLeft16<8>(g), kr);
+ b = RotateLeft16<1>(_mm_add_epi16(t1, t2));
+ f = RotateLeft16<1>(_mm_add_epi16(t3, t4));
+
+ counter = _mm_add_epi16(counter, increment);
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(5,4,5,4, 5,4,5,4, 5,4,5,4, 5,4,5,4));
+
+ t1 = _mm_xor_si128(c, counter);
+ t3 = _mm_xor_si128(g, counter);
+ t2 = _mm_xor_si128(RotateLeft16<1>(d), kr);
+ t4 = _mm_xor_si128(RotateLeft16<1>(h), kr);
+ c = RotateLeft16<8>(_mm_add_epi16(t1, t2));
+ g = RotateLeft16<8>(_mm_add_epi16(t3, t4));
+
+ counter = _mm_add_epi16(counter, increment);
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(7,6,7,6, 7,6,7,6, 7,6,7,6, 7,6,7,6));
+
+ t1 = _mm_xor_si128(d, counter);
+ t3 = _mm_xor_si128(h, counter);
+ t2 = _mm_xor_si128(RotateLeft16<8>(a), kr);
+ t4 = _mm_xor_si128(RotateLeft16<8>(e), kr);
+ d = RotateLeft16<1>(_mm_add_epi16(t1, t2));
+ h = RotateLeft16<1>(_mm_add_epi16(t3, t4));
+
+ counter = _mm_add_epi16(counter, increment);
+ }
+
+ // [A1 B1 .. G1 H1][A2 B2 .. G2 H2] ... => [A1 A2 .. A6 A7][B1 B2 .. B6 B7] ...
+ block0 = RepackXMM<0>(a,b,c,d,e,f,g,h);
+}
+
+inline void CHAM64_Dec_Block(__m128i &block0,
+ const word16 *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 .. A6 A7][B1 B2 .. B6 B7] ... => [A1 B1 .. G1 H1][A2 B2 .. G2 H2] ...
+ __m128i a = UnpackXMM<0>(block0);
+ __m128i b = UnpackXMM<1>(block0);
+ __m128i c = UnpackXMM<2>(block0);
+ __m128i d = UnpackXMM<3>(block0);
+ __m128i e = UnpackXMM<4>(block0);
+ __m128i f = UnpackXMM<5>(block0);
+ __m128i g = UnpackXMM<6>(block0);
+ __m128i h = UnpackXMM<7>(block0);
+
+ const unsigned int rounds = 80;
+ __m128i counter = _mm_set_epi16(rounds-1,rounds-1,rounds-1,rounds-1, rounds-1,rounds-1,rounds-1,rounds-1);
+ __m128i decrement = _mm_set_epi16(1,1,1,1,1,1,1,1);
+
+ const unsigned int MASK = 15;
+ for (int i = static_cast<int>(rounds)-1; i >= 0; i-=4)
+ {
+ __m128i k, kr, t1, t2, t3, t4;
+ k = _mm_castpd_si128(_mm_load_sd((const double*)(&subkeys[(i-3) & MASK])));
+
+ // Shuffle out key
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(7,6,7,6, 7,6,7,6, 7,6,7,6, 7,6,7,6));
+
+ // Odd round
+ t1 = RotateRight16<1>(d);
+ t3 = RotateRight16<1>(h);
+ t2 = _mm_xor_si128(RotateLeft16<8>(a), kr);
+ t4 = _mm_xor_si128(RotateLeft16<8>(e), kr);
+ d = _mm_xor_si128(_mm_sub_epi16(t1, t2), counter);
+ h = _mm_xor_si128(_mm_sub_epi16(t3, t4), counter);
+
+ counter = _mm_sub_epi16(counter, decrement);
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(5,4,5,4, 5,4,5,4, 5,4,5,4, 5,4,5,4));
+
+ // Even round
+ t1 = RotateRight16<8>(c);
+ t3 = RotateRight16<8>(g);
+ t2 = _mm_xor_si128(RotateLeft16<1>(d), kr);
+ t4 = _mm_xor_si128(RotateLeft16<1>(h), kr);
+ c = _mm_xor_si128(_mm_sub_epi16(t1, t2), counter);
+ g = _mm_xor_si128(_mm_sub_epi16(t3, t4), counter);
+
+ counter = _mm_sub_epi16(counter, decrement);
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(3,2,3,2, 3,2,3,2, 3,2,3,2, 3,2,3,2));
+
+ // Odd round
+ t1 = RotateRight16<1>(b);
+ t3 = RotateRight16<1>(f);
+ t2 = _mm_xor_si128(RotateLeft16<8>(c), kr);
+ t4 = _mm_xor_si128(RotateLeft16<8>(g), kr);
+ b = _mm_xor_si128(_mm_sub_epi16(t1, t2), counter);
+ f = _mm_xor_si128(_mm_sub_epi16(t3, t4), counter);
+
+ counter = _mm_sub_epi16(counter, decrement);
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(1,0,1,0, 1,0,1,0, 1,0,1,0, 1,0,1,0));
+
+ // Even round
+ t1 = RotateRight16<8>(a);
+ t3 = RotateRight16<8>(e);
+ t2 = _mm_xor_si128(RotateLeft16<1>(b), kr);
+ t4 = _mm_xor_si128(RotateLeft16<1>(f), kr);
+ a = _mm_xor_si128(_mm_sub_epi16(t1, t2), counter);
+ e = _mm_xor_si128(_mm_sub_epi16(t3, t4), counter);
+
+ counter = _mm_sub_epi16(counter, decrement);
+ }
+
+ // [A1 B1 .. G1 H1][A2 B2 .. G2 H2] ... => [A1 A2 .. A6 A7][B1 B2 .. B6 B7] ...
+ block0 = RepackXMM<0>(a,b,c,d,e,f,g,h);
+}
+
+inline void CHAM64_Enc_2_Blocks(__m128i &block0,
+ __m128i &block1, const word16 *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 .. A6 A7][B1 B2 .. B6 B7] ... => [A1 B1 .. G1 H1][A2 B2 .. G2 H2] ...
+ __m128i a = UnpackXMM<0>(block0, block1);
+ __m128i b = UnpackXMM<1>(block0, block1);
+ __m128i c = UnpackXMM<2>(block0, block1);
+ __m128i d = UnpackXMM<3>(block0, block1);
+ __m128i e = UnpackXMM<4>(block0, block1);
+ __m128i f = UnpackXMM<5>(block0, block1);
+ __m128i g = UnpackXMM<6>(block0, block1);
+ __m128i h = UnpackXMM<7>(block0, block1);
+
+ const unsigned int rounds = 80;
+ __m128i counter = _mm_set_epi16(0,0,0,0,0,0,0,0);
+ __m128i increment = _mm_set_epi16(1,1,1,1,1,1,1,1);
+
+ const unsigned int MASK = 15;
+ for (int i=0; i<static_cast<int>(rounds); i+=4)
+ {
+ __m128i k, kr, t1, t2, t3, t4;
+ k = _mm_castpd_si128(_mm_load_sd((const double*)(&subkeys[i & MASK])));
+
+ // Shuffle out key
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(1,0,1,0, 1,0,1,0, 1,0,1,0, 1,0,1,0));
+
+ t1 = _mm_xor_si128(a, counter);
+ t3 = _mm_xor_si128(e, counter);
+ t2 = _mm_xor_si128(RotateLeft16<1>(b), kr);
+ t4 = _mm_xor_si128(RotateLeft16<1>(f), kr);
+ a = RotateLeft16<8>(_mm_add_epi16(t1, t2));
+ e = RotateLeft16<8>(_mm_add_epi16(t3, t4));
+
+ counter = _mm_add_epi16(counter, increment);
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(3,2,3,2, 3,2,3,2, 3,2,3,2, 3,2,3,2));
+
+ t1 = _mm_xor_si128(b, counter);
+ t3 = _mm_xor_si128(f, counter);
+ t2 = _mm_xor_si128(RotateLeft16<8>(c), kr);
+ t4 = _mm_xor_si128(RotateLeft16<8>(g), kr);
+ b = RotateLeft16<1>(_mm_add_epi16(t1, t2));
+ f = RotateLeft16<1>(_mm_add_epi16(t3, t4));
+
+ counter = _mm_add_epi16(counter, increment);
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(5,4,5,4, 5,4,5,4, 5,4,5,4, 5,4,5,4));
+
+ t1 = _mm_xor_si128(c, counter);
+ t3 = _mm_xor_si128(g, counter);
+ t2 = _mm_xor_si128(RotateLeft16<1>(d), kr);
+ t4 = _mm_xor_si128(RotateLeft16<1>(h), kr);
+ c = RotateLeft16<8>(_mm_add_epi16(t1, t2));
+ g = RotateLeft16<8>(_mm_add_epi16(t3, t4));
+
+ counter = _mm_add_epi16(counter, increment);
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(7,6,7,6, 7,6,7,6, 7,6,7,6, 7,6,7,6));
+
+ t1 = _mm_xor_si128(d, counter);
+ t3 = _mm_xor_si128(h, counter);
+ t2 = _mm_xor_si128(RotateLeft16<8>(a), kr);
+ t4 = _mm_xor_si128(RotateLeft16<8>(e), kr);
+ d = RotateLeft16<1>(_mm_add_epi16(t1, t2));
+ h = RotateLeft16<1>(_mm_add_epi16(t3, t4));
+
+ counter = _mm_add_epi16(counter, increment);
+ }
+
+ // [A1 B1 .. G1 H1][A2 B2 .. G2 H2] ... => [A1 A2 .. A6 A7][B1 B2 .. B6 B7] ...
+ block0 = RepackXMM<0>(a,b,c,d,e,f,g,h);
+ block1 = RepackXMM<1>(a,b,c,d,e,f,g,h);
+}
+
+inline void CHAM64_Dec_2_Blocks(__m128i &block0,
+ __m128i &block1, const word16 *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 .. A6 A7][B1 B2 .. B6 B7] ... => [A1 B1 .. G1 H1][A2 B2 .. G2 H2] ...
+ __m128i a = UnpackXMM<0>(block0, block1);
+ __m128i b = UnpackXMM<1>(block0, block1);
+ __m128i c = UnpackXMM<2>(block0, block1);
+ __m128i d = UnpackXMM<3>(block0, block1);
+ __m128i e = UnpackXMM<4>(block0, block1);
+ __m128i f = UnpackXMM<5>(block0, block1);
+ __m128i g = UnpackXMM<6>(block0, block1);
+ __m128i h = UnpackXMM<7>(block0, block1);
+
+ const unsigned int rounds = 80;
+ __m128i counter = _mm_set_epi16(rounds-1,rounds-1,rounds-1,rounds-1, rounds-1,rounds-1,rounds-1,rounds-1);
+ __m128i decrement = _mm_set_epi16(1,1,1,1,1,1,1,1);
+
+ const unsigned int MASK = 15;
+ for (int i = static_cast<int>(rounds)-1; i >= 0; i-=4)
+ {
+ __m128i k, kr, t1, t2, t3, t4;
+ k = _mm_castpd_si128(_mm_load_sd((const double*)(&subkeys[(i-3) & MASK])));
+
+ // Shuffle out key
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(7,6,7,6, 7,6,7,6, 7,6,7,6, 7,6,7,6));
+
+ // Odd round
+ t1 = RotateRight16<1>(d);
+ t3 = RotateRight16<1>(h);
+ t2 = _mm_xor_si128(RotateLeft16<8>(a), kr);
+ t4 = _mm_xor_si128(RotateLeft16<8>(e), kr);
+ d = _mm_xor_si128(_mm_sub_epi16(t1, t2), counter);
+ h = _mm_xor_si128(_mm_sub_epi16(t3, t4), counter);
+
+ counter = _mm_sub_epi16(counter, decrement);
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(5,4,5,4, 5,4,5,4, 5,4,5,4, 5,4,5,4));
+
+ // Even round
+ t1 = RotateRight16<8>(c);
+ t3 = RotateRight16<8>(g);
+ t2 = _mm_xor_si128(RotateLeft16<1>(d), kr);
+ t4 = _mm_xor_si128(RotateLeft16<1>(h), kr);
+ c = _mm_xor_si128(_mm_sub_epi16(t1, t2), counter);
+ g = _mm_xor_si128(_mm_sub_epi16(t3, t4), counter);
+
+ counter = _mm_sub_epi16(counter, decrement);
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(3,2,3,2, 3,2,3,2, 3,2,3,2, 3,2,3,2));
+
+ // Odd round
+ t1 = RotateRight16<1>(b);
+ t3 = RotateRight16<1>(f);
+ t2 = _mm_xor_si128(RotateLeft16<8>(c), kr);
+ t4 = _mm_xor_si128(RotateLeft16<8>(g), kr);
+ b = _mm_xor_si128(_mm_sub_epi16(t1, t2), counter);
+ f = _mm_xor_si128(_mm_sub_epi16(t3, t4), counter);
+
+ counter = _mm_sub_epi16(counter, decrement);
+ kr = _mm_shuffle_epi8(k, _mm_set_epi8(1,0,1,0, 1,0,1,0, 1,0,1,0, 1,0,1,0));
+
+ // Even round
+ t1 = RotateRight16<8>(a);
+ t3 = RotateRight16<8>(e);
+ t2 = _mm_xor_si128(RotateLeft16<1>(b), kr);
+ t4 = _mm_xor_si128(RotateLeft16<1>(f), kr);
+ a = _mm_xor_si128(_mm_sub_epi16(t1, t2), counter);
+ e = _mm_xor_si128(_mm_sub_epi16(t3, t4), counter);
+
+ counter = _mm_sub_epi16(counter, decrement);
+ }
+
+ // [A1 B1 .. G1 H1][A2 B2 .. G2 H2] ... => [A1 A2 .. A6 A7][B1 B2 .. B6 B7] ...
+ block0 = RepackXMM<0>(a,b,c,d,e,f,g,h);
+ block1 = RepackXMM<1>(a,b,c,d,e,f,g,h);
+}
+
+NAMESPACE_END // W16
+
+//////////////////////////////////////////////////////////////////////////
+
+NAMESPACE_BEGIN(W32) // CHAM128, 32-bit word size
+
+template <unsigned int R>
+inline __m128i RotateLeft32(const __m128i& val)
+{
+#if defined(CRYPTOPP_AVX512_ROTATE)
+ return _mm_rol_epi32(val, R);
+#elif defined(__XOP__)
+ return _mm_roti_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);
+#elif defined(__XOP__)
+ return _mm_roti_epi32(val, 32-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)
+{
+#if defined(__XOP__)
+ return _mm_roti_epi32(val, 8);
+#else
+ 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);
+#endif
+}
+
+// Faster than two Shifts and an Or. Thanks to Louis Wingers and Bryan Weeks.
+template <>
+inline __m128i RotateRight32<8>(const __m128i& val)
+{
+#if defined(__XOP__)
+ return _mm_roti_epi32(val, 32-8);
+#else
+ 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);
+#endif
+}
+
+template <unsigned int IDX>
+inline __m128i UnpackXMM(const __m128i& a, const __m128i& b, const __m128i& c, const __m128i& d)
+{
+ // Should not be instantiated
+ CRYPTOPP_UNUSED(a); CRYPTOPP_UNUSED(b);
+ CRYPTOPP_UNUSED(c); CRYPTOPP_UNUSED(d);
+ 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
+ // CHAM 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
+ // CHAM 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
+ // CHAM 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
+ // CHAM 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_UNUSED(v); 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 CHAM128_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);
+
+ __m128i counter = _mm_set_epi32(0,0,0,0);
+ __m128i increment = _mm_set_epi32(1,1,1,1);
+
+ const unsigned int MASK = (rounds == 80 ? 7 : 15);
+ for (int i=0; i<static_cast<int>(rounds); i+=4)
+ {
+ __m128i k, k1, k2, t1, t2;
+ k = _mm_castpd_si128(_mm_load_sd((const double*)(&subkeys[(i+0) & MASK])));
+
+ // Shuffle out two subkeys
+ k1 = _mm_shuffle_epi8(k, _mm_set_epi8(3,2,1,0, 3,2,1,0, 3,2,1,0, 3,2,1,0));
+ k2 = _mm_shuffle_epi8(k, _mm_set_epi8(7,6,5,4, 7,6,5,4, 7,6,5,4, 7,6,5,4));
+
+ t1 = _mm_xor_si128(a, counter);
+ t2 = _mm_xor_si128(RotateLeft32<1>(b), k1);
+ a = RotateLeft32<8>(_mm_add_epi32(t1, t2));
+
+ counter = _mm_add_epi32(counter, increment);
+
+ t1 = _mm_xor_si128(b, counter);
+ t2 = _mm_xor_si128(RotateLeft32<8>(c), k2);
+ b = RotateLeft32<1>(_mm_add_epi32(t1, t2));
+
+ counter = _mm_add_epi32(counter, increment);
+
+ k = _mm_castpd_si128(_mm_load_sd((const double*)(&subkeys[(i+2) & MASK])));
+
+ // Shuffle out two subkeys
+ k1 = _mm_shuffle_epi8(k, _mm_set_epi8(3,2,1,0, 3,2,1,0, 3,2,1,0, 3,2,1,0));
+ k2 = _mm_shuffle_epi8(k, _mm_set_epi8(7,6,5,4, 7,6,5,4, 7,6,5,4, 7,6,5,4));
+
+ t1 = _mm_xor_si128(c, counter);
+ t2 = _mm_xor_si128(RotateLeft32<1>(d), k1);
+ c = RotateLeft32<8>(_mm_add_epi32(t1, t2));
+
+ counter = _mm_add_epi32(counter, increment);
+
+ t1 = _mm_xor_si128(d, counter);
+ t2 = _mm_xor_si128(RotateLeft32<8>(a), k2);
+ d = RotateLeft32<1>(_mm_add_epi32(t1, t2));
+
+ counter = _mm_add_epi32(counter, increment);
+ }
+
+ // [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 CHAM128_Dec_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);
+
+ __m128i counter = _mm_set_epi32(rounds-1,rounds-1,rounds-1,rounds-1);
+ __m128i decrement = _mm_set_epi32(1,1,1,1);
+
+ const unsigned int MASK = (rounds == 80 ? 7 : 15);
+ for (int i = static_cast<int>(rounds)-1; i >= 0; i-=4)
+ {
+ __m128i k, k1, k2, t1, t2;
+ k = _mm_castpd_si128(_mm_load_sd((const double*)(&subkeys[(i-1) & MASK])));
+
+ // Shuffle out two subkeys
+ k1 = _mm_shuffle_epi8(k, _mm_set_epi8(7,6,5,4, 7,6,5,4, 7,6,5,4, 7,6,5,4));
+ k2 = _mm_shuffle_epi8(k, _mm_set_epi8(3,2,1,0, 3,2,1,0, 3,2,1,0, 3,2,1,0));
+
+ // Odd round
+ t1 = RotateRight32<1>(d);
+ t2 = _mm_xor_si128(RotateLeft32<8>(a), k1);
+ d = _mm_xor_si128(_mm_sub_epi32(t1, t2), counter);
+
+ counter = _mm_sub_epi32(counter, decrement);
+
+ // Even round
+ t1 = RotateRight32<8>(c);
+ t2 = _mm_xor_si128(RotateLeft32<1>(d), k2);
+ c = _mm_xor_si128(_mm_sub_epi32(t1, t2), counter);
+
+ counter = _mm_sub_epi32(counter, decrement);
+ k = _mm_castpd_si128(_mm_load_sd((const double*)(&subkeys[(i-3) & MASK])));
+
+ // Shuffle out two subkeys
+ k1 = _mm_shuffle_epi8(k, _mm_set_epi8(7,6,5,4, 7,6,5,4, 7,6,5,4, 7,6,5,4));
+ k2 = _mm_shuffle_epi8(k, _mm_set_epi8(3,2,1,0, 3,2,1,0, 3,2,1,0, 3,2,1,0));
+
+ // Odd round
+ t1 = RotateRight32<1>(b);
+ t2 = _mm_xor_si128(RotateLeft32<8>(c), k1);
+ b = _mm_xor_si128(_mm_sub_epi32(t1, t2), counter);
+
+ counter = _mm_sub_epi32(counter, decrement);
+
+ // Even round
+ t1 = RotateRight32<8>(a);
+ t2 = _mm_xor_si128(RotateLeft32<1>(b), k2);
+ a = _mm_xor_si128(_mm_sub_epi32(t1, t2), counter);
+
+ counter = _mm_sub_epi32(counter, decrement);
+ }
+
+ // [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 CHAM128_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);
+
+ __m128i counter = _mm_set_epi32(0,0,0,0);
+ __m128i increment = _mm_set_epi32(1,1,1,1);
+
+ const unsigned int MASK = (rounds == 80 ? 7 : 15);
+ for (int i=0; i<static_cast<int>(rounds); i+=4)
+ {
+ __m128i k, k1, k2, t1, t2;
+ k = _mm_castpd_si128(_mm_load_sd((const double*)(&subkeys[(i+0) & MASK])));
+
+ // Shuffle out two subkeys
+ k1 = _mm_shuffle_epi8(k, _mm_set_epi8(3,2,1,0, 3,2,1,0, 3,2,1,0, 3,2,1,0));
+ k2 = _mm_shuffle_epi8(k, _mm_set_epi8(7,6,5,4, 7,6,5,4, 7,6,5,4, 7,6,5,4));
+
+ t1 = _mm_xor_si128(a, counter);
+ t2 = _mm_xor_si128(RotateLeft32<1>(b), k1);
+ a = RotateLeft32<8>(_mm_add_epi32(t1, t2));
+
+ counter = _mm_add_epi32(counter, increment);
+
+ t1 = _mm_xor_si128(b, counter);
+ t2 = _mm_xor_si128(RotateLeft32<8>(c), k2);
+ b = RotateLeft32<1>(_mm_add_epi32(t1, t2));
+
+ counter = _mm_add_epi32(counter, increment);
+ k = _mm_castpd_si128(_mm_load_sd((const double*)(&subkeys[(i+2) & MASK])));
+
+ // Shuffle out two subkeys
+ k1 = _mm_shuffle_epi8(k, _mm_set_epi8(3,2,1,0, 3,2,1,0, 3,2,1,0, 3,2,1,0));
+ k2 = _mm_shuffle_epi8(k, _mm_set_epi8(7,6,5,4, 7,6,5,4, 7,6,5,4, 7,6,5,4));
+
+ t1 = _mm_xor_si128(c, counter);
+ t2 = _mm_xor_si128(RotateLeft32<1>(d), k1);
+ c = RotateLeft32<8>(_mm_add_epi32(t1, t2));
+
+ counter = _mm_add_epi32(counter, increment);
+
+ t1 = _mm_xor_si128(d, counter);
+ t2 = _mm_xor_si128(RotateLeft32<8>(a), k2);
+ d = RotateLeft32<1>(_mm_add_epi32(t1, t2));
+
+ counter = _mm_add_epi32(counter, increment);
+ }
+
+ // [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 CHAM128_Dec_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);
+
+ __m128i counter = _mm_set_epi32(rounds-1,rounds-1,rounds-1,rounds-1);
+ __m128i decrement = _mm_set_epi32(1,1,1,1);
+
+ const unsigned int MASK = (rounds == 80 ? 7 : 15);
+ for (int i = static_cast<int>(rounds)-1; i >= 0; i-=4)
+ {
+ __m128i k, k1, k2, t1, t2;
+ k = _mm_castpd_si128(_mm_load_sd((const double*)(&subkeys[(i-1) & MASK])));
+
+ // Shuffle out two subkeys
+ k1 = _mm_shuffle_epi8(k, _mm_set_epi8(7,6,5,4, 7,6,5,4, 7,6,5,4, 7,6,5,4));
+ k2 = _mm_shuffle_epi8(k, _mm_set_epi8(3,2,1,0, 3,2,1,0, 3,2,1,0, 3,2,1,0));
+
+ // Odd round
+ t1 = RotateRight32<1>(d);
+ t2 = _mm_xor_si128(RotateLeft32<8>(a), k1);
+ d = _mm_xor_si128(_mm_sub_epi32(t1, t2), counter);
+
+ counter = _mm_sub_epi32(counter, decrement);
+
+ // Even round
+ t1 = RotateRight32<8>(c);
+ t2 = _mm_xor_si128(RotateLeft32<1>(d), k2);
+ c = _mm_xor_si128(_mm_sub_epi32(t1, t2), counter);
+
+ counter = _mm_sub_epi32(counter, decrement);
+ k = _mm_castpd_si128(_mm_load_sd((const double*)(&subkeys[(i-3) & MASK])));
+
+ // Shuffle out two subkeys
+ k1 = _mm_shuffle_epi8(k, _mm_set_epi8(7,6,5,4, 7,6,5,4, 7,6,5,4, 7,6,5,4));
+ k2 = _mm_shuffle_epi8(k, _mm_set_epi8(3,2,1,0, 3,2,1,0, 3,2,1,0, 3,2,1,0));
+
+ // Odd round
+ t1 = RotateRight32<1>(b);
+ t2 = _mm_xor_si128(RotateLeft32<8>(c), k1);
+ b = _mm_xor_si128(_mm_sub_epi32(t1, t2), counter);
+
+ counter = _mm_sub_epi32(counter, decrement);
+
+ // Even round
+ t1 = RotateRight32<8>(a);
+ t2 = _mm_xor_si128(RotateLeft32<1>(b), k2);
+ a = _mm_xor_si128(_mm_sub_epi32(t1, t2), counter);
+
+ counter = _mm_sub_epi32(counter, decrement);
+ }
+
+ // [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);
+}
+
+//////////////////////////////////////////////////////////////////////////
+
+NAMESPACE_END // W32
+
+#endif // CRYPTOPP_SSSE3_AVAILABLE
+
+ANONYMOUS_NAMESPACE_END
+
+NAMESPACE_BEGIN(CryptoPP)
+
+#if defined(CRYPTOPP_SSSE3_AVAILABLE)
+size_t CHAM64_Enc_AdvancedProcessBlocks_SSSE3(const word16* subKeys, size_t rounds,
+ const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags)
+{
+ return AdvancedProcessBlocks64_2x1_SSE(W16::CHAM64_Enc_Block, W16::CHAM64_Enc_2_Blocks,
+ subKeys, rounds, inBlocks, xorBlocks, outBlocks, length, flags);
+}
+
+size_t CHAM64_Dec_AdvancedProcessBlocks_SSSE3(const word16* subKeys, size_t rounds,
+ const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags)
+{
+ return AdvancedProcessBlocks64_2x1_SSE(W16::CHAM64_Dec_Block, W16::CHAM64_Dec_2_Blocks,
+ subKeys, rounds, inBlocks, xorBlocks, outBlocks, length, flags);
+}
+
+size_t CHAM128_Enc_AdvancedProcessBlocks_SSSE3(const word32* subKeys, size_t rounds,
+ const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags)
+{
+ return AdvancedProcessBlocks128_4x1_SSE(W32::CHAM128_Enc_Block, W32::CHAM128_Enc_4_Blocks,
+ subKeys, rounds, inBlocks, xorBlocks, outBlocks, length, flags);
+}
+
+size_t CHAM128_Dec_AdvancedProcessBlocks_SSSE3(const word32* subKeys, size_t rounds,
+ const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags)
+{
+ return AdvancedProcessBlocks128_4x1_SSE(W32::CHAM128_Dec_Block, W32::CHAM128_Dec_4_Blocks,
+ subKeys, rounds, inBlocks, xorBlocks, outBlocks, length, flags);
+}
+#endif // CRYPTOPP_SSSE3_AVAILABLE
+
+NAMESPACE_END
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