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sm4.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/sm4/sm4.c
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1/*-
2 * Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.-
3 * Copyright 2017 Ribose Inc. All Rights Reserved.-
4 * Ported from Ribose contributions from Botan.-
5 *-
6 * Licensed under the OpenSSL license (the "License"). You may not use-
7 * this file except in compliance with the License. You can obtain a copy-
8 * in the file LICENSE in the source distribution or at-
9 * https://www.openssl.org/source/license.html-
10 */-
11-
12#include <openssl/e_os2.h>-
13#include "internal/sm4.h"-
14-
15static const uint8_t SM4_S[256] = {-
16 0xD6, 0x90, 0xE9, 0xFE, 0xCC, 0xE1, 0x3D, 0xB7, 0x16, 0xB6, 0x14, 0xC2,-
17 0x28, 0xFB, 0x2C, 0x05, 0x2B, 0x67, 0x9A, 0x76, 0x2A, 0xBE, 0x04, 0xC3,-
18 0xAA, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99, 0x9C, 0x42, 0x50, 0xF4,-
19 0x91, 0xEF, 0x98, 0x7A, 0x33, 0x54, 0x0B, 0x43, 0xED, 0xCF, 0xAC, 0x62,-
20 0xE4, 0xB3, 0x1C, 0xA9, 0xC9, 0x08, 0xE8, 0x95, 0x80, 0xDF, 0x94, 0xFA,-
21 0x75, 0x8F, 0x3F, 0xA6, 0x47, 0x07, 0xA7, 0xFC, 0xF3, 0x73, 0x17, 0xBA,-
22 0x83, 0x59, 0x3C, 0x19, 0xE6, 0x85, 0x4F, 0xA8, 0x68, 0x6B, 0x81, 0xB2,-
23 0x71, 0x64, 0xDA, 0x8B, 0xF8, 0xEB, 0x0F, 0x4B, 0x70, 0x56, 0x9D, 0x35,-
24 0x1E, 0x24, 0x0E, 0x5E, 0x63, 0x58, 0xD1, 0xA2, 0x25, 0x22, 0x7C, 0x3B,-
25 0x01, 0x21, 0x78, 0x87, 0xD4, 0x00, 0x46, 0x57, 0x9F, 0xD3, 0x27, 0x52,-
26 0x4C, 0x36, 0x02, 0xE7, 0xA0, 0xC4, 0xC8, 0x9E, 0xEA, 0xBF, 0x8A, 0xD2,-
27 0x40, 0xC7, 0x38, 0xB5, 0xA3, 0xF7, 0xF2, 0xCE, 0xF9, 0x61, 0x15, 0xA1,-
28 0xE0, 0xAE, 0x5D, 0xA4, 0x9B, 0x34, 0x1A, 0x55, 0xAD, 0x93, 0x32, 0x30,-
29 0xF5, 0x8C, 0xB1, 0xE3, 0x1D, 0xF6, 0xE2, 0x2E, 0x82, 0x66, 0xCA, 0x60,-
30 0xC0, 0x29, 0x23, 0xAB, 0x0D, 0x53, 0x4E, 0x6F, 0xD5, 0xDB, 0x37, 0x45,-
31 0xDE, 0xFD, 0x8E, 0x2F, 0x03, 0xFF, 0x6A, 0x72, 0x6D, 0x6C, 0x5B, 0x51,-
32 0x8D, 0x1B, 0xAF, 0x92, 0xBB, 0xDD, 0xBC, 0x7F, 0x11, 0xD9, 0x5C, 0x41,-
33 0x1F, 0x10, 0x5A, 0xD8, 0x0A, 0xC1, 0x31, 0x88, 0xA5, 0xCD, 0x7B, 0xBD,-
34 0x2D, 0x74, 0xD0, 0x12, 0xB8, 0xE5, 0xB4, 0xB0, 0x89, 0x69, 0x97, 0x4A,-
35 0x0C, 0x96, 0x77, 0x7E, 0x65, 0xB9, 0xF1, 0x09, 0xC5, 0x6E, 0xC6, 0x84,-
36 0x18, 0xF0, 0x7D, 0xEC, 0x3A, 0xDC, 0x4D, 0x20, 0x79, 0xEE, 0x5F, 0x3E,-
37 0xD7, 0xCB, 0x39, 0x48-
38};-
39-
40/*-
41 * SM4_SBOX_T[j] == L(SM4_SBOX[j]).-
42 */-
43static const uint32_t SM4_SBOX_T[256] = {-
44 0x8ED55B5B, 0xD0924242, 0x4DEAA7A7, 0x06FDFBFB, 0xFCCF3333, 0x65E28787,-
45 0xC93DF4F4, 0x6BB5DEDE, 0x4E165858, 0x6EB4DADA, 0x44145050, 0xCAC10B0B,-
46 0x8828A0A0, 0x17F8EFEF, 0x9C2CB0B0, 0x11051414, 0x872BACAC, 0xFB669D9D,-
47 0xF2986A6A, 0xAE77D9D9, 0x822AA8A8, 0x46BCFAFA, 0x14041010, 0xCFC00F0F,-
48 0x02A8AAAA, 0x54451111, 0x5F134C4C, 0xBE269898, 0x6D482525, 0x9E841A1A,-
49 0x1E061818, 0xFD9B6666, 0xEC9E7272, 0x4A430909, 0x10514141, 0x24F7D3D3,-
50 0xD5934646, 0x53ECBFBF, 0xF89A6262, 0x927BE9E9, 0xFF33CCCC, 0x04555151,-
51 0x270B2C2C, 0x4F420D0D, 0x59EEB7B7, 0xF3CC3F3F, 0x1CAEB2B2, 0xEA638989,-
52 0x74E79393, 0x7FB1CECE, 0x6C1C7070, 0x0DABA6A6, 0xEDCA2727, 0x28082020,-
53 0x48EBA3A3, 0xC1975656, 0x80820202, 0xA3DC7F7F, 0xC4965252, 0x12F9EBEB,-
54 0xA174D5D5, 0xB38D3E3E, 0xC33FFCFC, 0x3EA49A9A, 0x5B461D1D, 0x1B071C1C,-
55 0x3BA59E9E, 0x0CFFF3F3, 0x3FF0CFCF, 0xBF72CDCD, 0x4B175C5C, 0x52B8EAEA,-
56 0x8F810E0E, 0x3D586565, 0xCC3CF0F0, 0x7D196464, 0x7EE59B9B, 0x91871616,-
57 0x734E3D3D, 0x08AAA2A2, 0xC869A1A1, 0xC76AADAD, 0x85830606, 0x7AB0CACA,-
58 0xB570C5C5, 0xF4659191, 0xB2D96B6B, 0xA7892E2E, 0x18FBE3E3, 0x47E8AFAF,-
59 0x330F3C3C, 0x674A2D2D, 0xB071C1C1, 0x0E575959, 0xE99F7676, 0xE135D4D4,-
60 0x661E7878, 0xB4249090, 0x360E3838, 0x265F7979, 0xEF628D8D, 0x38596161,-
61 0x95D24747, 0x2AA08A8A, 0xB1259494, 0xAA228888, 0x8C7DF1F1, 0xD73BECEC,-
62 0x05010404, 0xA5218484, 0x9879E1E1, 0x9B851E1E, 0x84D75353, 0x00000000,-
63 0x5E471919, 0x0B565D5D, 0xE39D7E7E, 0x9FD04F4F, 0xBB279C9C, 0x1A534949,-
64 0x7C4D3131, 0xEE36D8D8, 0x0A020808, 0x7BE49F9F, 0x20A28282, 0xD4C71313,-
65 0xE8CB2323, 0xE69C7A7A, 0x42E9ABAB, 0x43BDFEFE, 0xA2882A2A, 0x9AD14B4B,-
66 0x40410101, 0xDBC41F1F, 0xD838E0E0, 0x61B7D6D6, 0x2FA18E8E, 0x2BF4DFDF,-
67 0x3AF1CBCB, 0xF6CD3B3B, 0x1DFAE7E7, 0xE5608585, 0x41155454, 0x25A38686,-
68 0x60E38383, 0x16ACBABA, 0x295C7575, 0x34A69292, 0xF7996E6E, 0xE434D0D0,-
69 0x721A6868, 0x01545555, 0x19AFB6B6, 0xDF914E4E, 0xFA32C8C8, 0xF030C0C0,-
70 0x21F6D7D7, 0xBC8E3232, 0x75B3C6C6, 0x6FE08F8F, 0x691D7474, 0x2EF5DBDB,-
71 0x6AE18B8B, 0x962EB8B8, 0x8A800A0A, 0xFE679999, 0xE2C92B2B, 0xE0618181,-
72 0xC0C30303, 0x8D29A4A4, 0xAF238C8C, 0x07A9AEAE, 0x390D3434, 0x1F524D4D,-
73 0x764F3939, 0xD36EBDBD, 0x81D65757, 0xB7D86F6F, 0xEB37DCDC, 0x51441515,-
74 0xA6DD7B7B, 0x09FEF7F7, 0xB68C3A3A, 0x932FBCBC, 0x0F030C0C, 0x03FCFFFF,-
75 0xC26BA9A9, 0xBA73C9C9, 0xD96CB5B5, 0xDC6DB1B1, 0x375A6D6D, 0x15504545,-
76 0xB98F3636, 0x771B6C6C, 0x13ADBEBE, 0xDA904A4A, 0x57B9EEEE, 0xA9DE7777,-
77 0x4CBEF2F2, 0x837EFDFD, 0x55114444, 0xBDDA6767, 0x2C5D7171, 0x45400505,-
78 0x631F7C7C, 0x50104040, 0x325B6969, 0xB8DB6363, 0x220A2828, 0xC5C20707,-
79 0xF531C4C4, 0xA88A2222, 0x31A79696, 0xF9CE3737, 0x977AEDED, 0x49BFF6F6,-
80 0x992DB4B4, 0xA475D1D1, 0x90D34343, 0x5A124848, 0x58BAE2E2, 0x71E69797,-
81 0x64B6D2D2, 0x70B2C2C2, 0xAD8B2626, 0xCD68A5A5, 0xCB955E5E, 0x624B2929,-
82 0x3C0C3030, 0xCE945A5A, 0xAB76DDDD, 0x867FF9F9, 0xF1649595, 0x5DBBE6E6,-
83 0x35F2C7C7, 0x2D092424, 0xD1C61717, 0xD66FB9B9, 0xDEC51B1B, 0x94861212,-
84 0x78186060, 0x30F3C3C3, 0x897CF5F5, 0x5CEFB3B3, 0xD23AE8E8, 0xACDF7373,-
85 0x794C3535, 0xA0208080, 0x9D78E5E5, 0x56EDBBBB, 0x235E7D7D, 0xC63EF8F8,-
86 0x8BD45F5F, 0xE7C82F2F, 0xDD39E4E4, 0x68492121 };-
87-
88static ossl_inline uint32_t rotl(uint32_t a, uint8_t n)-
89{-
90 return (a << n) | (a >> (32 - n));
executed 208471552 times by 2 tests: return (a << n) | (a >> (32 - n));
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
208471552
91}-
92-
93static ossl_inline uint32_t load_u32_be(const uint8_t *b, uint32_t n)-
94{-
95 return ((uint32_t)b[4 * n] << 24) |
executed 8018372 times by 2 tests: return ((uint32_t)b[4 * n] << 24) | ((uint32_t)b[4 * n + 1] << 16) | ((uint32_t)b[4 * n + 2] << 8) | ((uint32_t)b[4 * n + 3]);
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
8018372
96 ((uint32_t)b[4 * n + 1] << 16) |
executed 8018372 times by 2 tests: return ((uint32_t)b[4 * n] << 24) | ((uint32_t)b[4 * n + 1] << 16) | ((uint32_t)b[4 * n + 2] << 8) | ((uint32_t)b[4 * n + 3]);
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
8018372
97 ((uint32_t)b[4 * n + 2] << 8) |
executed 8018372 times by 2 tests: return ((uint32_t)b[4 * n] << 24) | ((uint32_t)b[4 * n + 1] << 16) | ((uint32_t)b[4 * n + 2] << 8) | ((uint32_t)b[4 * n + 3]);
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
8018372
98 ((uint32_t)b[4 * n + 3]);
executed 8018372 times by 2 tests: return ((uint32_t)b[4 * n] << 24) | ((uint32_t)b[4 * n + 1] << 16) | ((uint32_t)b[4 * n + 2] << 8) | ((uint32_t)b[4 * n + 3]);
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
8018372
99}-
100-
101static ossl_inline void store_u32_be(uint32_t v, uint8_t *b)-
102{-
103 b[0] = (uint8_t)(v >> 24);-
104 b[1] = (uint8_t)(v >> 16);-
105 b[2] = (uint8_t)(v >> 8);-
106 b[3] = (uint8_t)(v);-
107}
executed 8017760 times by 2 tests: end of block
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
8017760
108-
109static ossl_inline uint32_t SM4_T_slow(uint32_t X)-
110{-
111 uint32_t t = 0;-
112-
113 t |= ((uint32_t)SM4_S[(uint8_t)(X >> 24)]) << 24;-
114 t |= ((uint32_t)SM4_S[(uint8_t)(X >> 16)]) << 16;-
115 t |= ((uint32_t)SM4_S[(uint8_t)(X >> 8)]) << 8;-
116 t |= SM4_S[(uint8_t)X];-
117-
118 /*-
119 * L linear transform-
120 */-
121 return t ^ rotl(t, 2) ^ rotl(t, 10) ^ rotl(t, 18) ^ rotl(t, 24);
executed 16035520 times by 2 tests: return t ^ rotl(t, 2) ^ rotl(t, 10) ^ rotl(t, 18) ^ rotl(t, 24);
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
16035520
122}-
123-
124static ossl_inline uint32_t SM4_T(uint32_t X)-
125{-
126 return SM4_SBOX_T[(uint8_t)(X >> 24)] ^
executed 48106560 times by 2 tests: return SM4_SBOX_T[(uint8_t)(X >> 24)] ^ rotl(SM4_SBOX_T[(uint8_t)(X >> 16)], 24) ^ rotl(SM4_SBOX_T[(uint8_t)(X >> 8)], 16) ^ rotl(SM4_SBOX_T[(uint8_t)X], 8);
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
48106560
127 rotl(SM4_SBOX_T[(uint8_t)(X >> 16)], 24) ^
executed 48106560 times by 2 tests: return SM4_SBOX_T[(uint8_t)(X >> 24)] ^ rotl(SM4_SBOX_T[(uint8_t)(X >> 16)], 24) ^ rotl(SM4_SBOX_T[(uint8_t)(X >> 8)], 16) ^ rotl(SM4_SBOX_T[(uint8_t)X], 8);
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
48106560
128 rotl(SM4_SBOX_T[(uint8_t)(X >> 8)], 16) ^
executed 48106560 times by 2 tests: return SM4_SBOX_T[(uint8_t)(X >> 24)] ^ rotl(SM4_SBOX_T[(uint8_t)(X >> 16)], 24) ^ rotl(SM4_SBOX_T[(uint8_t)(X >> 8)], 16) ^ rotl(SM4_SBOX_T[(uint8_t)X], 8);
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
48106560
129 rotl(SM4_SBOX_T[(uint8_t)X], 8);
executed 48106560 times by 2 tests: return SM4_SBOX_T[(uint8_t)(X >> 24)] ^ rotl(SM4_SBOX_T[(uint8_t)(X >> 16)], 24) ^ rotl(SM4_SBOX_T[(uint8_t)(X >> 8)], 16) ^ rotl(SM4_SBOX_T[(uint8_t)X], 8);
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
48106560
130}-
131-
132int SM4_set_key(const uint8_t *key, SM4_KEY *ks)-
133{-
134 /*-
135 * Family Key-
136 */-
137 static const uint32_t FK[4] =-
138 { 0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc };-
139-
140 /*-
141 * Constant Key-
142 */-
143 static const uint32_t CK[32] = {-
144 0x00070E15, 0x1C232A31, 0x383F464D, 0x545B6269,-
145 0x70777E85, 0x8C939AA1, 0xA8AFB6BD, 0xC4CBD2D9,-
146 0xE0E7EEF5, 0xFC030A11, 0x181F262D, 0x343B4249,-
147 0x50575E65, 0x6C737A81, 0x888F969D, 0xA4ABB2B9,-
148 0xC0C7CED5, 0xDCE3EAF1, 0xF8FF060D, 0x141B2229,-
149 0x30373E45, 0x4C535A61, 0x686F767D, 0x848B9299,-
150 0xA0A7AEB5, 0xBCC3CAD1, 0xD8DFE6ED, 0xF4FB0209,-
151 0x10171E25, 0x2C333A41, 0x484F565D, 0x646B7279-
152 };-
153-
154 uint32_t K[4];-
155 int i;-
156-
157 K[0] = load_u32_be(key, 0) ^ FK[0];-
158 K[1] = load_u32_be(key, 1) ^ FK[1];-
159 K[2] = load_u32_be(key, 2) ^ FK[2];-
160 K[3] = load_u32_be(key, 3) ^ FK[3];-
161-
162 for (i = 0; i != SM4_KEY_SCHEDULE; ++i) {
i != 32Description
TRUEevaluated 4896 times by 2 tests
Evaluated by:
  • libcrypto.so.1.1
  • sm4_internal_test
FALSEevaluated 153 times by 2 tests
Evaluated by:
  • libcrypto.so.1.1
  • sm4_internal_test
153-4896
163 uint32_t X = K[(i + 1) % 4] ^ K[(i + 2) % 4] ^ K[(i + 3) % 4] ^ CK[i];-
164 uint32_t t = 0;-
165-
166 t |= ((uint32_t)SM4_S[(uint8_t)(X >> 24)]) << 24;-
167 t |= ((uint32_t)SM4_S[(uint8_t)(X >> 16)]) << 16;-
168 t |= ((uint32_t)SM4_S[(uint8_t)(X >> 8)]) << 8;-
169 t |= SM4_S[(uint8_t)X];-
170-
171 t = t ^ rotl(t, 13) ^ rotl(t, 23);-
172 K[i % 4] ^= t;-
173 ks->rk[i] = K[i % 4];-
174 }
executed 4896 times by 2 tests: end of block
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
4896
175-
176 return 1;
executed 153 times by 2 tests: return 1;
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
153
177}-
178-
179#define SM4_RNDS(k0, k1, k2, k3, F) \-
180 do { \-
181 B0 ^= F(B1 ^ B2 ^ B3 ^ ks->rk[k0]); \-
182 B1 ^= F(B0 ^ B2 ^ B3 ^ ks->rk[k1]); \-
183 B2 ^= F(B0 ^ B1 ^ B3 ^ ks->rk[k2]); \-
184 B3 ^= F(B0 ^ B1 ^ B2 ^ ks->rk[k3]); \-
185 } while(0)-
186-
187void SM4_encrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *ks)-
188{-
189 uint32_t B0 = load_u32_be(in, 0);-
190 uint32_t B1 = load_u32_be(in, 1);-
191 uint32_t B2 = load_u32_be(in, 2);-
192 uint32_t B3 = load_u32_be(in, 3);-
193-
194 /*-
195 * Uses byte-wise sbox in the first and last rounds to provide some-
196 * protection from cache based side channels.-
197 */-
198 SM4_RNDS( 0, 1, 2, 3, SM4_T_slow);-
199 SM4_RNDS( 4, 5, 6, 7, SM4_T);-
200 SM4_RNDS( 8, 9, 10, 11, SM4_T);-
201 SM4_RNDS(12, 13, 14, 15, SM4_T);-
202 SM4_RNDS(16, 17, 18, 19, SM4_T);-
203 SM4_RNDS(20, 21, 22, 23, SM4_T);-
204 SM4_RNDS(24, 25, 26, 27, SM4_T);-
205 SM4_RNDS(28, 29, 30, 31, SM4_T_slow);-
206-
207 store_u32_be(B3, out);-
208 store_u32_be(B2, out + 4);-
209 store_u32_be(B1, out + 8);-
210 store_u32_be(B0, out + 12);-
211}
executed 1003495 times by 2 tests: end of block
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
1003495
212-
213void SM4_decrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *ks)-
214{-
215 uint32_t B0 = load_u32_be(in, 0);-
216 uint32_t B1 = load_u32_be(in, 1);-
217 uint32_t B2 = load_u32_be(in, 2);-
218 uint32_t B3 = load_u32_be(in, 3);-
219-
220 SM4_RNDS(31, 30, 29, 28, SM4_T_slow);-
221 SM4_RNDS(27, 26, 25, 24, SM4_T);-
222 SM4_RNDS(23, 22, 21, 20, SM4_T);-
223 SM4_RNDS(19, 18, 17, 16, SM4_T);-
224 SM4_RNDS(15, 14, 13, 12, SM4_T);-
225 SM4_RNDS(11, 10, 9, 8, SM4_T);-
226 SM4_RNDS( 7, 6, 5, 4, SM4_T);-
227 SM4_RNDS( 3, 2, 1, 0, SM4_T_slow);-
228-
229 store_u32_be(B3, out);-
230 store_u32_be(B2, out + 4);-
231 store_u32_be(B1, out + 8);-
232 store_u32_be(B0, out + 12);-
233}
executed 1000945 times by 2 tests: end of block
Executed by:
  • libcrypto.so.1.1
  • sm4_internal_test
1000945
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