diff options
Diffstat (limited to 'src/Crypto/SerpentFast_simd.cpp')
| -rw-r--r-- | src/Crypto/SerpentFast_simd.cpp | 338 |
1 files changed, 338 insertions, 0 deletions
diff --git a/src/Crypto/SerpentFast_simd.cpp b/src/Crypto/SerpentFast_simd.cpp new file mode 100644 index 00000000..d5d5d65b --- /dev/null +++ b/src/Crypto/SerpentFast_simd.cpp @@ -0,0 +1,338 @@ +/* +* Serpent (SIMD) +* (C) 2009,2013 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#include "SerpentFast.h" +#include "SerpentFast_sbox.h" +#if !defined(_UEFI) +#include <memory.h> +#include <stdlib.h> +#endif +#include "cpu.h" +#include "misc.h" + +#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE + +/** +* This class is not a general purpose SIMD type, and only offers +* instructions needed for evaluation of specific crypto primitives. +* For example it does not currently have equality operators of any +* kind. +*/ +class SIMD_4x32 +{ +public: + + SIMD_4x32() // zero initialized + { + ::memset(&m_reg, 0, sizeof(m_reg)); + } + + explicit SIMD_4x32(const unsigned __int32 B[4]) + { + m_reg = _mm_loadu_si128(reinterpret_cast<const __m128i*>(B)); + } + + SIMD_4x32(unsigned __int32 B0, unsigned __int32 B1, unsigned __int32 B2, unsigned __int32 B3) + { + m_reg = _mm_set_epi32(B0, B1, B2, B3); + } + + explicit SIMD_4x32(unsigned __int32 B) + { + m_reg = _mm_set1_epi32(B); + } + + static SIMD_4x32 load_le(const void* in) + { + return SIMD_4x32(_mm_loadu_si128(reinterpret_cast<const __m128i*>(in))); + } + + static SIMD_4x32 load_be(const void* in) + { + return load_le(in).bswap(); + } + + void store_le(unsigned __int8 out[]) const + { + _mm_storeu_si128(reinterpret_cast<__m128i*>(out), m_reg); + } + + void store_be(unsigned __int8 out[]) const + { + bswap().store_le(out); + } + + void rotate_left(size_t rot) + { + m_reg = _mm_or_si128(_mm_slli_epi32(m_reg, static_cast<int>(rot)), + _mm_srli_epi32(m_reg, static_cast<int>(32-rot))); + + } + + void rotate_right(size_t rot) + { + rotate_left(32 - rot); + } + + void operator+=(const SIMD_4x32& other) + { + m_reg = _mm_add_epi32(m_reg, other.m_reg); + } + + SIMD_4x32 operator+(const SIMD_4x32& other) const + { + return SIMD_4x32(_mm_add_epi32(m_reg, other.m_reg)); + } + + void operator-=(const SIMD_4x32& other) + { + m_reg = _mm_sub_epi32(m_reg, other.m_reg); + } + + SIMD_4x32 operator-(const SIMD_4x32& other) const + { + return SIMD_4x32(_mm_sub_epi32(m_reg, other.m_reg)); + } + + void operator^=(const SIMD_4x32& other) + { + m_reg = _mm_xor_si128(m_reg, other.m_reg); + } + + SIMD_4x32 operator^(const SIMD_4x32& other) const + { + return SIMD_4x32(_mm_xor_si128(m_reg, other.m_reg)); + } + + void operator|=(const SIMD_4x32& other) + { + m_reg = _mm_or_si128(m_reg, other.m_reg); + } + + SIMD_4x32 operator&(const SIMD_4x32& other) + { + return SIMD_4x32(_mm_and_si128(m_reg, other.m_reg)); + } + + void operator&=(const SIMD_4x32& other) + { + m_reg = _mm_and_si128(m_reg, other.m_reg); + } + + SIMD_4x32 operator<<(size_t shift) const + { + return SIMD_4x32(_mm_slli_epi32(m_reg, static_cast<int>(shift))); + } + + SIMD_4x32 operator>>(size_t shift) const + { + return SIMD_4x32(_mm_srli_epi32(m_reg, static_cast<int>(shift))); + } + + SIMD_4x32 operator~() const + { + return SIMD_4x32(_mm_xor_si128(m_reg, _mm_set1_epi32(0xFFFFFFFF))); + } + + // (~reg) & other + SIMD_4x32 andc(const SIMD_4x32& other) + { + return SIMD_4x32(_mm_andnot_si128(m_reg, other.m_reg)); + } + + SIMD_4x32 bswap() const + { + __m128i T = m_reg; + + T = _mm_shufflehi_epi16(T, _MM_SHUFFLE(2, 3, 0, 1)); + T = _mm_shufflelo_epi16(T, _MM_SHUFFLE(2, 3, 0, 1)); + + return SIMD_4x32(_mm_or_si128(_mm_srli_epi16(T, 8), + _mm_slli_epi16(T, 8))); + } + + static void transpose(SIMD_4x32& B0, SIMD_4x32& B1, + SIMD_4x32& B2, SIMD_4x32& B3) + { + __m128i T0 = _mm_unpacklo_epi32(B0.m_reg, B1.m_reg); + __m128i T1 = _mm_unpacklo_epi32(B2.m_reg, B3.m_reg); + __m128i T2 = _mm_unpackhi_epi32(B0.m_reg, B1.m_reg); + __m128i T3 = _mm_unpackhi_epi32(B2.m_reg, B3.m_reg); + B0.m_reg = _mm_unpacklo_epi64(T0, T1); + B1.m_reg = _mm_unpackhi_epi64(T0, T1); + B2.m_reg = _mm_unpacklo_epi64(T2, T3); + B3.m_reg = _mm_unpackhi_epi64(T2, T3); + } + +private: + + explicit SIMD_4x32(__m128i in) { m_reg = in; } + + __m128i m_reg; + +}; + +typedef SIMD_4x32 SIMD_32; + +#define key_xor(round, B0, B1, B2, B3) \ + do { \ + B0 ^= SIMD_32(round_key[4*round ]); \ + B1 ^= SIMD_32(round_key[4*round+1]); \ + B2 ^= SIMD_32(round_key[4*round+2]); \ + B3 ^= SIMD_32(round_key[4*round+3]); \ + } while(0); + +/* +* Serpent's linear transformations +*/ +#define transform(B0, B1, B2, B3) \ + do { \ + B0.rotate_left(13); \ + B2.rotate_left(3); \ + B1 ^= B0 ^ B2; \ + B3 ^= B2 ^ (B0 << 3); \ + B1.rotate_left(1); \ + B3.rotate_left(7); \ + B0 ^= B1 ^ B3; \ + B2 ^= B3 ^ (B1 << 7); \ + B0.rotate_left(5); \ + B2.rotate_left(22); \ + } while(0); + +#define i_transform(B0, B1, B2, B3) \ + do { \ + B2.rotate_right(22); \ + B0.rotate_right(5); \ + B2 ^= B3 ^ (B1 << 7); \ + B0 ^= B1 ^ B3; \ + B3.rotate_right(7); \ + B1.rotate_right(1); \ + B3 ^= B2 ^ (B0 << 3); \ + B1 ^= B0 ^ B2; \ + B2.rotate_right(3); \ + B0.rotate_right(13); \ + } while(0); + + + +/* +* SIMD Serpent Encryption of 4 blocks in parallel +*/ +extern "C" void serpent_simd_encrypt_blocks_4(const unsigned __int8 in[], unsigned __int8 out[], unsigned __int32* round_key) +{ + SIMD_32 B0 = SIMD_32::load_le(in); + SIMD_32 B1 = SIMD_32::load_le(in + 16); + SIMD_32 B2 = SIMD_32::load_le(in + 32); + SIMD_32 B3 = SIMD_32::load_le(in + 48); + + SIMD_32::transpose(B0, B1, B2, B3); + + key_xor( 0,B0,B1,B2,B3); SBoxE1(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor( 1,B0,B1,B2,B3); SBoxE2(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor( 2,B0,B1,B2,B3); SBoxE3(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor( 3,B0,B1,B2,B3); SBoxE4(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor( 4,B0,B1,B2,B3); SBoxE5(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor( 5,B0,B1,B2,B3); SBoxE6(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor( 6,B0,B1,B2,B3); SBoxE7(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor( 7,B0,B1,B2,B3); SBoxE8(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + + key_xor( 8,B0,B1,B2,B3); SBoxE1(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor( 9,B0,B1,B2,B3); SBoxE2(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(10,B0,B1,B2,B3); SBoxE3(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(11,B0,B1,B2,B3); SBoxE4(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(12,B0,B1,B2,B3); SBoxE5(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(13,B0,B1,B2,B3); SBoxE6(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(14,B0,B1,B2,B3); SBoxE7(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(15,B0,B1,B2,B3); SBoxE8(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + + key_xor(16,B0,B1,B2,B3); SBoxE1(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(17,B0,B1,B2,B3); SBoxE2(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(18,B0,B1,B2,B3); SBoxE3(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(19,B0,B1,B2,B3); SBoxE4(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(20,B0,B1,B2,B3); SBoxE5(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(21,B0,B1,B2,B3); SBoxE6(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(22,B0,B1,B2,B3); SBoxE7(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(23,B0,B1,B2,B3); SBoxE8(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + + key_xor(24,B0,B1,B2,B3); SBoxE1(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(25,B0,B1,B2,B3); SBoxE2(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(26,B0,B1,B2,B3); SBoxE3(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(27,B0,B1,B2,B3); SBoxE4(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(28,B0,B1,B2,B3); SBoxE5(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(29,B0,B1,B2,B3); SBoxE6(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(30,B0,B1,B2,B3); SBoxE7(SIMD_32,B0,B1,B2,B3); transform(B0,B1,B2,B3); + key_xor(31,B0,B1,B2,B3); SBoxE8(SIMD_32,B0,B1,B2,B3); key_xor(32,B0,B1,B2,B3); + + SIMD_32::transpose(B0, B1, B2, B3); + + B0.store_le(out); + B1.store_le(out + 16); + B2.store_le(out + 32); + B3.store_le(out + 48); +} + +/* +* SIMD Serpent Decryption of 4 blocks in parallel +*/ +extern "C" void serpent_simd_decrypt_blocks_4(const unsigned __int8 in[], unsigned __int8 out[], unsigned __int32* round_key) +{ + SIMD_32 B0 = SIMD_32::load_le(in); + SIMD_32 B1 = SIMD_32::load_le(in + 16); + SIMD_32 B2 = SIMD_32::load_le(in + 32); + SIMD_32 B3 = SIMD_32::load_le(in + 48); + + SIMD_32::transpose(B0, B1, B2, B3); + + key_xor(32,B0,B1,B2,B3); SBoxD8(SIMD_32,B0,B1,B2,B3); key_xor(31,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD7(SIMD_32,B0,B1,B2,B3); key_xor(30,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD6(SIMD_32,B0,B1,B2,B3); key_xor(29,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD5(SIMD_32,B0,B1,B2,B3); key_xor(28,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD4(SIMD_32,B0,B1,B2,B3); key_xor(27,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD3(SIMD_32,B0,B1,B2,B3); key_xor(26,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD2(SIMD_32,B0,B1,B2,B3); key_xor(25,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD1(SIMD_32,B0,B1,B2,B3); key_xor(24,B0,B1,B2,B3); + + i_transform(B0,B1,B2,B3); SBoxD8(SIMD_32,B0,B1,B2,B3); key_xor(23,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD7(SIMD_32,B0,B1,B2,B3); key_xor(22,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD6(SIMD_32,B0,B1,B2,B3); key_xor(21,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD5(SIMD_32,B0,B1,B2,B3); key_xor(20,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD4(SIMD_32,B0,B1,B2,B3); key_xor(19,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD3(SIMD_32,B0,B1,B2,B3); key_xor(18,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD2(SIMD_32,B0,B1,B2,B3); key_xor(17,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD1(SIMD_32,B0,B1,B2,B3); key_xor(16,B0,B1,B2,B3); + + i_transform(B0,B1,B2,B3); SBoxD8(SIMD_32,B0,B1,B2,B3); key_xor(15,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD7(SIMD_32,B0,B1,B2,B3); key_xor(14,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD6(SIMD_32,B0,B1,B2,B3); key_xor(13,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD5(SIMD_32,B0,B1,B2,B3); key_xor(12,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD4(SIMD_32,B0,B1,B2,B3); key_xor(11,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD3(SIMD_32,B0,B1,B2,B3); key_xor(10,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD2(SIMD_32,B0,B1,B2,B3); key_xor( 9,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD1(SIMD_32,B0,B1,B2,B3); key_xor( 8,B0,B1,B2,B3); + + i_transform(B0,B1,B2,B3); SBoxD8(SIMD_32,B0,B1,B2,B3); key_xor( 7,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD7(SIMD_32,B0,B1,B2,B3); key_xor( 6,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD6(SIMD_32,B0,B1,B2,B3); key_xor( 5,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD5(SIMD_32,B0,B1,B2,B3); key_xor( 4,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD4(SIMD_32,B0,B1,B2,B3); key_xor( 3,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD3(SIMD_32,B0,B1,B2,B3); key_xor( 2,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD2(SIMD_32,B0,B1,B2,B3); key_xor( 1,B0,B1,B2,B3); + i_transform(B0,B1,B2,B3); SBoxD1(SIMD_32,B0,B1,B2,B3); key_xor( 0,B0,B1,B2,B3); + + SIMD_32::transpose(B0, B1, B2, B3); + + B0.store_le(out); + B1.store_le(out + 16); + B2.store_le(out + 32); + B3.store_le(out + 48); +} + +#undef key_xor +#undef transform +#undef i_transform + +#endif |