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23e3fea5 | 1 | |
2 | #include "aes.h" | |
3 | ||
4 | ||
5 | ||
6 | ||
7 | ||
8 | ||
9 | ||
10 | // The lookup-tables are marked const so they can be placed in read-only storage instead of RAM | |
11 | // The numbers below can be computed dynamically trading ROM for RAM - | |
12 | // This can be useful in (embedded) bootloader applications, where ROM is often limited. | |
13 | static const uint8_t sbox[256] = { | |
14 | //0 1 2 3 4 5 6 7 8 9 A B C D E F | |
15 | 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, | |
16 | 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, | |
17 | 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, | |
18 | 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, | |
19 | 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, | |
20 | 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, | |
21 | 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, | |
22 | 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, | |
23 | 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, | |
24 | 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, | |
25 | 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, | |
26 | 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, | |
27 | 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, | |
28 | 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, | |
29 | 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, | |
30 | 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 }; | |
31 | ||
32 | #define getSBoxValue(num) (sbox[(num)]) | |
33 | ||
34 | ||
35 | extern __m512i aes2(__m512i s,__m512i key) | |
36 | { | |
37 | alignas(64) uint8_t state[4][4][4]; | |
38 | _mm512_store_epi32(state[0][0],s); | |
39 | alignas(64) uint8_t a[4][4][4]; | |
40 | ||
41 | const uint8_t U8_INV_FISRT_BIT_MASK[64] = {[0 ... 63] = 0xFE };//mask2 | |
afb82921 | 42 | const uint32_t COEFF[16] = {[0 ... 15] = 0x1b };//mul |
23e3fea5 | 43 | const uint8_t U8_FISRT_BIT_MASK[64] = {[0 ... 63] = 0x01 };//mask |
44 | const uint32_t U32_FISRT_BYTE_MASK[16] = {[0 ... 15] = 0x000000FF };//mask3 | |
45 | const uint32_t left1[16] = {0x00,0x18,0x10,0x08,0x00,0x18,0x10,0x08,0x00,0x18,0x10,0x08,0x00,0x18,0x10,0x08};//left | |
46 | const uint32_t right1[16] = {0x00,0x08,0x10,0x18,0x00,0x08,0x10,0x18,0x00,0x08,0x10,0x18,0x00,0x08,0x10,0x18};//right | |
47 | __m512i mask2 = _mm512_load_epi32 (U8_INV_FISRT_BIT_MASK); | |
48 | __m512i mul = _mm512_load_epi32 (COEFF); | |
49 | __m512i mask = _mm512_load_epi32 (U8_FISRT_BIT_MASK); | |
50 | __m512i mask3 = _mm512_load_epi32 (U32_FISRT_BYTE_MASK); | |
51 | __m512i left = _mm512_load_epi32 (left1); | |
52 | __m512i right = _mm512_load_epi32 (right1); | |
53 | ||
54 | ||
55 | for (uint8_t t = 0; t < 4; ++t) | |
56 | for (uint8_t i = 0; i < 4; ++i) | |
57 | for (uint8_t j = 0; j < 4; ++j) | |
58 | a[t][i][j] = getSBoxValue(state[t][j][i]); // substitute and swap columbs and rows | |
59 | ||
60 | ||
61 | __m512i in1 = _mm512_load_epi32 (a[0][0]); | |
62 | __m512i mix_left = _mm512_sllv_epi32(in1,left); | |
63 | __m512i mix_right = _mm512_srlv_epi32(in1,right); | |
64 | __m512i rotated = _mm512_or_si512(mix_right,mix_left); | |
65 | _mm512_store_epi32(a[0][0],rotated); | |
66 | ||
67 | ||
68 | for (uint8_t t = 0; t < 4; ++t) | |
69 | for(int x = 0; x < 4;x++) | |
70 | for(int y = 0; y < 4;y++) | |
71 | state[t][y][x] = a[t][x][y]; // unswap colimbs and rows | |
72 | ||
73 | ||
74 | __m512i in = _mm512_load_epi32 (state[0][0]); | |
75 | __m512i in_shiftR_8 = _mm512_srli_epi32(in,8); | |
76 | __m512i xor2 = _mm512_xor_si512(in_shiftR_8,in); | |
77 | __m512i in_shiftR_16 = _mm512_srli_epi32(in,16); | |
78 | __m512i xor1 = _mm512_xor_si512(in_shiftR_16,xor2); | |
79 | __m512i in_shiftR_24 = _mm512_srli_epi32(in,24); | |
80 | __m512i xor = _mm512_xor_si512(xor1,in_shiftR_24); | |
81 | ||
82 | __m512i xor_byte = _mm512_and_si512(xor,mask3); // make byte | |
83 | __m512i xor_byte_coeff = _mm512_mullo_epi32(xor_byte,mask); | |
84 | ||
85 | __m512i in_shiftL_24 = _mm512_slli_epi32(in,24); | |
86 | __m512i in_rotL_8 = _mm512_or_si512(in_shiftR_8,in_shiftL_24); | |
87 | ||
88 | __m512i Tm = _mm512_xor_si512(in_rotL_8,in); | |
89 | ||
90 | ||
91 | ||
92 | __m512i in_shiftR_7 = _mm512_srli_epi32(Tm,7); | |
93 | __m512i in_shiftR_7_BYTE = _mm512_and_si512(in_shiftR_7,mask); | |
afb82921 | 94 | __m512i mul_1b = _mm512_mullo_epi32(in_shiftR_7_BYTE,mul); |
23e3fea5 | 95 | |
96 | __m512i in_shiftL_1 = _mm512_slli_epi32(Tm,1); | |
97 | __m512i in_shiftL_1_BYTE = _mm512_and_si512(in_shiftL_1,mask2); | |
98 | ||
99 | __m512i xtime = _mm512_xor_si512(mul_1b,in_shiftL_1_BYTE); | |
100 | __m512i tmp = _mm512_xor_si512(xor_byte_coeff,xtime); | |
101 | __m512i matrix_multiply = _mm512_xor_si512(tmp,in); | |
102 | return _mm512_xor_si512(key,matrix_multiply); | |
103 | } | |
104 | ||
105 | ||
106 | ||
107 | extern void aes(_512_state* state,_512_key *k) | |
108 | { | |
109 | __m512i key = _mm512_load_epi32 (k); | |
110 | alignas(64) uint8_t a[4][4][4]; | |
111 | ||
112 | const uint8_t U8_INV_FISRT_BIT_MASK[64] = {[0 ... 63] = 0xFE };//mask2 | |
afb82921 | 113 | const uint32_t COEFF[16] = {[0 ... 15] = 0x1b };//mul |
23e3fea5 | 114 | const uint8_t U8_FISRT_BIT_MASK[64] = {[0 ... 63] = 0x01 };//mask |
115 | const uint32_t U32_FISRT_BYTE_MASK[16] = {[0 ... 15] = 0x000000FF };//mask3 | |
116 | const uint32_t left1[16] = {0x00,0x18,0x10,0x08,0x00,0x18,0x10,0x08,0x00,0x18,0x10,0x08,0x00,0x18,0x10,0x08};//left | |
117 | const uint32_t right1[16] = {0x00,0x08,0x10,0x18,0x00,0x08,0x10,0x18,0x00,0x08,0x10,0x18,0x00,0x08,0x10,0x18};//right | |
118 | __m512i mask2 = _mm512_load_epi32 (U8_INV_FISRT_BIT_MASK); | |
119 | __m512i mul = _mm512_load_epi32 (COEFF); | |
120 | __m512i mask = _mm512_load_epi32 (U8_FISRT_BIT_MASK); | |
121 | __m512i mask3 = _mm512_load_epi32 (U32_FISRT_BYTE_MASK); | |
122 | __m512i left = _mm512_load_epi32 (left1); | |
123 | __m512i right = _mm512_load_epi32 (right1); | |
124 | ||
125 | ||
126 | for (uint8_t t = 0; t < 4; ++t) | |
127 | for (uint8_t i = 0; i < 4; ++i) | |
128 | for (uint8_t j = 0; j < 4; ++j) | |
129 | a[t][i][j] = getSBoxValue((*state)[t][j][i]); // substitute and swap columbs and rows | |
130 | ||
131 | ||
132 | __m512i in1 = _mm512_load_epi32 (a[0][0]); | |
133 | __m512i mix_left = _mm512_sllv_epi32(in1,left); | |
134 | __m512i mix_right = _mm512_srlv_epi32(in1,right); | |
135 | __m512i rotated = _mm512_or_si512(mix_right,mix_left); | |
136 | _mm512_store_epi32(a[0][0],rotated); | |
137 | ||
138 | ||
139 | for (uint8_t t = 0; t < 4; ++t) | |
140 | for(int x = 0; x < 4;x++) | |
141 | for(int y = 0; y < 4;y++) | |
142 | (*state)[t][y][x] = a[t][x][y]; // unswap colimbs and rows | |
143 | ||
144 | ||
145 | __m512i in = _mm512_load_epi32 ((*state)[0][0]); | |
146 | __m512i in_shiftR_8 = _mm512_srli_epi32(in,8); | |
147 | __m512i xor2 = _mm512_xor_si512(in_shiftR_8,in); | |
148 | __m512i in_shiftR_16 = _mm512_srli_epi32(in,16); | |
149 | __m512i xor1 = _mm512_xor_si512(in_shiftR_16,xor2); | |
150 | __m512i in_shiftR_24 = _mm512_srli_epi32(in,24); | |
151 | __m512i xor = _mm512_xor_si512(xor1,in_shiftR_24); | |
152 | ||
153 | __m512i xor_byte = _mm512_and_si512(xor,mask3); // make byte | |
154 | __m512i xor_byte_coeff = _mm512_mullo_epi32(xor_byte,mask); | |
155 | ||
156 | __m512i in_shiftL_24 = _mm512_slli_epi32(in,24); | |
157 | __m512i in_rotL_8 = _mm512_or_si512(in_shiftR_8,in_shiftL_24); | |
158 | ||
159 | __m512i Tm = _mm512_xor_si512(in_rotL_8,in); | |
160 | ||
161 | ||
162 | ||
163 | __m512i in_shiftR_7 = _mm512_srli_epi32(Tm,7); | |
164 | __m512i in_shiftR_7_BYTE = _mm512_and_si512(in_shiftR_7,mask); | |
afb82921 | 165 | __m512i mul_1b = _mm512_mullo_epi32(in_shiftR_7_BYTE,mul); |
23e3fea5 | 166 | |
167 | __m512i in_shiftL_1 = _mm512_slli_epi32(Tm,1); | |
168 | __m512i in_shiftL_1_BYTE = _mm512_and_si512(in_shiftL_1,mask2); | |
169 | ||
170 | __m512i xtime = _mm512_xor_si512(mul_1b,in_shiftL_1_BYTE); | |
171 | __m512i tmp = _mm512_xor_si512(xor_byte_coeff,xtime); | |
172 | __m512i matrix_multiply = _mm512_xor_si512(tmp,in); | |
173 | __m512i ret = _mm512_xor_si512(key,matrix_multiply); | |
174 | _mm512_store_epi32((*state)[0][0],ret); | |
175 | } | |
176 | ||
177 |