Crypto++  8.0
Free C++ class library of cryptographic schemes
aria_simd.cpp
1 // aria_simd.cpp - written and placed in the public domain by
2 // Jeffrey Walton, Uri Blumenthal and Marcel Raad.
3 //
4 // This source file uses intrinsics to gain access to ARMv7a and
5 // ARMv8a NEON instructions. A separate source file is needed
6 // because additional CXXFLAGS are required to enable the
7 // appropriate instructions sets in some build configurations.
8 
9 #include "pch.h"
10 #include "config.h"
11 #include "misc.h"
12 
13 #if (CRYPTOPP_SSSE3_AVAILABLE)
14 # include <tmmintrin.h>
15 #endif
16 
17 #if (CRYPTOPP_ARM_NEON_AVAILABLE)
18 # include <arm_neon.h>
19 #endif
20 
21 // Can't use CRYPTOPP_ARM_XXX_AVAILABLE because too many
22 // compilers don't follow ACLE conventions for the include.
23 #if (CRYPTOPP_ARM_ACLE_AVAILABLE)
24 # include <stdint.h>
25 # include <arm_acle.h>
26 #endif
27 
28 // Clang __m128i casts, http://bugs.llvm.org/show_bug.cgi?id=20670
29 #define M128_CAST(x) ((__m128i *)(void *)(x))
30 #define CONST_M128_CAST(x) ((const __m128i *)(const void *)(x))
31 
32 NAMESPACE_BEGIN(CryptoPP)
33 NAMESPACE_BEGIN(ARIATab)
34 
35 extern const word32 S1[256];
36 extern const word32 S2[256];
37 extern const word32 X1[256];
38 extern const word32 X2[256];
39 extern const word32 KRK[3][4];
40 
41 NAMESPACE_END
42 NAMESPACE_END
43 
44 ANONYMOUS_NAMESPACE_BEGIN
45 
46 using CryptoPP::byte;
47 using CryptoPP::word32;
48 
49 inline byte ARIA_BRF(const word32 x, const int y) {
50  return GETBYTE(x, y);
51 }
52 
53 ANONYMOUS_NAMESPACE_END
54 
55 NAMESPACE_BEGIN(CryptoPP)
56 
57 using CryptoPP::ARIATab::S1;
58 using CryptoPP::ARIATab::S2;
59 using CryptoPP::ARIATab::X1;
60 using CryptoPP::ARIATab::X2;
61 using CryptoPP::ARIATab::KRK;
62 
63 #if (CRYPTOPP_ARM_NEON_AVAILABLE)
64 
65 template <unsigned int N>
66 inline void ARIA_GSRK_NEON(const uint32x4_t X, const uint32x4_t Y, byte RK[16])
67 {
68  enum { Q1 = (4-(N/32)) % 4,
69  Q2 = (3-(N/32)) % 4,
70  R = N % 32
71  };
72 
73  vst1q_u8(RK, vreinterpretq_u8_u32(
74  veorq_u32(X, veorq_u32(
75  vshrq_n_u32(vextq_u32(Y, Y, Q1), R),
76  vshlq_n_u32(vextq_u32(Y, Y, Q2), 32-R)))));
77 }
78 
79 void ARIA_UncheckedSetKey_Schedule_NEON(byte* rk, word32* ws, unsigned int keylen)
80 {
81  const uint32x4_t w0 = vld1q_u32(ws+ 0);
82  const uint32x4_t w1 = vld1q_u32(ws+ 8);
83  const uint32x4_t w2 = vld1q_u32(ws+12);
84  const uint32x4_t w3 = vld1q_u32(ws+16);
85 
86  ARIA_GSRK_NEON<19>(w0, w1, rk + 0);
87  ARIA_GSRK_NEON<19>(w1, w2, rk + 16);
88  ARIA_GSRK_NEON<19>(w2, w3, rk + 32);
89  ARIA_GSRK_NEON<19>(w3, w0, rk + 48);
90  ARIA_GSRK_NEON<31>(w0, w1, rk + 64);
91  ARIA_GSRK_NEON<31>(w1, w2, rk + 80);
92  ARIA_GSRK_NEON<31>(w2, w3, rk + 96);
93  ARIA_GSRK_NEON<31>(w3, w0, rk + 112);
94  ARIA_GSRK_NEON<67>(w0, w1, rk + 128);
95  ARIA_GSRK_NEON<67>(w1, w2, rk + 144);
96  ARIA_GSRK_NEON<67>(w2, w3, rk + 160);
97  ARIA_GSRK_NEON<67>(w3, w0, rk + 176);
98  ARIA_GSRK_NEON<97>(w0, w1, rk + 192);
99 
100  if (keylen > 16)
101  {
102  ARIA_GSRK_NEON<97>(w1, w2, rk + 208);
103  ARIA_GSRK_NEON<97>(w2, w3, rk + 224);
104 
105  if (keylen > 24)
106  {
107  ARIA_GSRK_NEON< 97>(w3, w0, rk + 240);
108  ARIA_GSRK_NEON<109>(w0, w1, rk + 256);
109  }
110  }
111 }
112 
113 void ARIA_ProcessAndXorBlock_NEON(const byte* xorBlock, byte* outBlock, const byte *rk, word32 *t)
114 {
115  outBlock[ 0] = (byte)(X1[ARIA_BRF(t[0],3)] );
116  outBlock[ 1] = (byte)(X2[ARIA_BRF(t[0],2)]>>8);
117  outBlock[ 2] = (byte)(S1[ARIA_BRF(t[0],1)] );
118  outBlock[ 3] = (byte)(S2[ARIA_BRF(t[0],0)] );
119  outBlock[ 4] = (byte)(X1[ARIA_BRF(t[1],3)] );
120  outBlock[ 5] = (byte)(X2[ARIA_BRF(t[1],2)]>>8);
121  outBlock[ 6] = (byte)(S1[ARIA_BRF(t[1],1)] );
122  outBlock[ 7] = (byte)(S2[ARIA_BRF(t[1],0)] );
123  outBlock[ 8] = (byte)(X1[ARIA_BRF(t[2],3)] );
124  outBlock[ 9] = (byte)(X2[ARIA_BRF(t[2],2)]>>8);
125  outBlock[10] = (byte)(S1[ARIA_BRF(t[2],1)] );
126  outBlock[11] = (byte)(S2[ARIA_BRF(t[2],0)] );
127  outBlock[12] = (byte)(X1[ARIA_BRF(t[3],3)] );
128  outBlock[13] = (byte)(X2[ARIA_BRF(t[3],2)]>>8);
129  outBlock[14] = (byte)(S1[ARIA_BRF(t[3],1)] );
130  outBlock[15] = (byte)(S2[ARIA_BRF(t[3],0)] );
131 
132  // 'outBlock' and 'xorBlock' may be unaligned.
133  if (xorBlock != NULLPTR)
134  {
135  vst1q_u8(outBlock,
136  veorq_u8(
137  vld1q_u8(xorBlock),
138  veorq_u8(
139  vld1q_u8(outBlock),
140  vrev32q_u8(vld1q_u8((rk))))));
141  }
142  else
143  {
144  vst1q_u8(outBlock,
145  veorq_u8(
146  vld1q_u8(outBlock),
147  vrev32q_u8(vld1q_u8(rk))));
148  }
149 }
150 
151 #endif // CRYPTOPP_ARM_NEON_AVAILABLE
152 
153 #if (CRYPTOPP_SSSE3_AVAILABLE)
154 
155 void ARIA_ProcessAndXorBlock_SSSE3(const byte* xorBlock, byte* outBlock, const byte *rk, word32 *t)
156 {
157  const __m128i MASK = _mm_set_epi8(12,13,14,15, 8,9,10,11, 4,5,6,7, 0,1,2,3);
158 
159  outBlock[ 0] = (byte)(X1[ARIA_BRF(t[0],3)] );
160  outBlock[ 1] = (byte)(X2[ARIA_BRF(t[0],2)]>>8);
161  outBlock[ 2] = (byte)(S1[ARIA_BRF(t[0],1)] );
162  outBlock[ 3] = (byte)(S2[ARIA_BRF(t[0],0)] );
163  outBlock[ 4] = (byte)(X1[ARIA_BRF(t[1],3)] );
164  outBlock[ 5] = (byte)(X2[ARIA_BRF(t[1],2)]>>8);
165  outBlock[ 6] = (byte)(S1[ARIA_BRF(t[1],1)] );
166  outBlock[ 7] = (byte)(S2[ARIA_BRF(t[1],0)] );
167  outBlock[ 8] = (byte)(X1[ARIA_BRF(t[2],3)] );
168  outBlock[ 9] = (byte)(X2[ARIA_BRF(t[2],2)]>>8);
169  outBlock[10] = (byte)(S1[ARIA_BRF(t[2],1)] );
170  outBlock[11] = (byte)(S2[ARIA_BRF(t[2],0)] );
171  outBlock[12] = (byte)(X1[ARIA_BRF(t[3],3)] );
172  outBlock[13] = (byte)(X2[ARIA_BRF(t[3],2)]>>8);
173  outBlock[14] = (byte)(S1[ARIA_BRF(t[3],1)] );
174  outBlock[15] = (byte)(S2[ARIA_BRF(t[3],0)] );
175 
176  // 'outBlock' and 'xorBlock' may be unaligned.
177  if (xorBlock != NULLPTR)
178  {
179  _mm_storeu_si128(M128_CAST(outBlock),
180  _mm_xor_si128(
181  _mm_loadu_si128(CONST_M128_CAST(xorBlock)),
182  _mm_xor_si128(
183  _mm_loadu_si128(CONST_M128_CAST(outBlock)),
184  _mm_shuffle_epi8(_mm_load_si128(CONST_M128_CAST(rk)), MASK)))
185  );
186  }
187  else
188  {
189  _mm_storeu_si128(M128_CAST(outBlock),
190  _mm_xor_si128(_mm_loadu_si128(CONST_M128_CAST(outBlock)),
191  _mm_shuffle_epi8(_mm_load_si128(CONST_M128_CAST(rk)), MASK)));
192  }
193 }
194 
195 #endif // CRYPTOPP_SSSE3_AVAILABLE
196 
197 NAMESPACE_END
Utility functions for the Crypto++ library.
Library configuration file.
Precompiled header file.
Crypto++ library namespace.