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/*
* 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
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