/* * 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); #if (!defined (DEBUG) || !defined (TC_WINDOWS_DRIVER)) /* * 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); } #endif #undef key_xor #undef transform #undef i_transform #endif