3DES加解密 C语言
2018-06-18 04:19:19来源：未知 阅读 ()
3DES（或称为Triple DES），它相当于是对每个数据块应用三次DES加密算法。3*8字节密钥。
设Ek()和Dk()代表DES算法的加密和解密过程，K代表DES算法使用的密钥，P代表明文，C代表密文；
3DES加密过程为：C=Ek3(Dk2(Ek1(P)))
3DES解密过程为：P=Dk1((EK2(Dk3(C)))
补齐方式PKCS7
k=8,l=数据长度
01 -- if l mod k = k-1
02 02 -- if l mod k = k-2
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k k ... k k -- if l mod k = 0
想在数据库中直接对数据进行加密，考虑使用udf函数对数据加密，考虑效率使用c语言更好一些，创建c语言的udf。
将openssl源码中的3DES加解密的源代码摘出来，在linux下编译测试。测试成功，然后按照udf的规则重新组织就可以使用了。
$gcc -Wall -O2 -o des3_func des3_func.c
1 #include <stdio.h> 2 #include <string.h> 3 #include <stdlib.h> 4 5 #define DES_LONG unsigned long 6 #define LEN_OF_KEY 24 7 8 #define ITERATIONS 16 9 10 #define c2l(c,l) (l =((DES_LONG)(*((c)++))) , \ 11 l|=((DES_LONG)(*((c)++)))<< 8L, \ 12 l|=((DES_LONG)(*((c)++)))<<16L, \ 13 l|=((DES_LONG)(*((c)++)))<<24L) 14 15 16 #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ 17 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ 18 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ 19 *((c)++)=(unsigned char)(((l)>>24L)&0xff)) 20 21 #define ROTATE(a,n) (((a)>>(n))+((a)<<(32-(n)))) 22 23 #define LOAD_DATA_tmp(a,b,c,d,e,f) LOAD_DATA(a,b,c,d,e,f,g) 24 #define LOAD_DATA(R,S,u,t,E0,E1,tmp) \ 25 u=R^s[S ]; \ 26 t=R^s[S+1] 27 28 #define D_ENCRYPT(LL,R,S) {\ 29 LOAD_DATA_tmp(R,S,u,t,E0,E1); \ 30 t=ROTATE(t,4); \ 31 LL^=\ 32 DES_SPtrans[0][(u>> 2L)&0x3f]^ \ 33 DES_SPtrans[2][(u>>10L)&0x3f]^ \ 34 DES_SPtrans[4][(u>>18L)&0x3f]^ \ 35 DES_SPtrans[6][(u>>26L)&0x3f]^ \ 36 DES_SPtrans[1][(t>> 2L)&0x3f]^ \ 37 DES_SPtrans[3][(t>>10L)&0x3f]^ \ 38 DES_SPtrans[5][(t>>18L)&0x3f]^ \ 39 DES_SPtrans[7][(t>>26L)&0x3f]; } 40 41 #define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\ 42 (b)^=(t),\ 43 (a)^=((t)<<(n))) 44 45 #define IP(l,r) \ 46 { \ 47 register DES_LONG tt; \ 48 PERM_OP(r,l,tt, 4,0x0f0f0f0fL); \ 49 PERM_OP(l,r,tt,16,0x0000ffffL); \ 50 PERM_OP(r,l,tt, 2,0x33333333L); \ 51 PERM_OP(l,r,tt, 8,0x00ff00ffL); \ 52 PERM_OP(r,l,tt, 1,0x55555555L); \ 53 } 54 55 #define FP(l,r) \ 56 { \ 57 register DES_LONG tt; \ 58 PERM_OP(l,r,tt, 1,0x55555555L); \ 59 PERM_OP(r,l,tt, 8,0x00ff00ffL); \ 60 PERM_OP(l,r,tt, 2,0x33333333L); \ 61 PERM_OP(r,l,tt,16,0x0000ffffL); \ 62 PERM_OP(l,r,tt, 4,0x0f0f0f0fL); \ 63 } 64 65 extern const DES_LONG DES_SPtrans[8][64]; 66 67 68 #define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\ 69 (a)=(a)^(t)^(t>>(16-(n)))) 70 71 static const DES_LONG des_skb[8][64] = { 72 { 73 /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ 74 0x00000000L, 0x00000010L, 0x20000000L, 0x20000010L, 75 0x00010000L, 0x00010010L, 0x20010000L, 0x20010010L, 76 0x00000800L, 0x00000810L, 0x20000800L, 0x20000810L, 77 0x00010800L, 0x00010810L, 0x20010800L, 0x20010810L, 78 0x00000020L, 0x00000030L, 0x20000020L, 0x20000030L, 79 0x00010020L, 0x00010030L, 0x20010020L, 0x20010030L, 80 0x00000820L, 0x00000830L, 0x20000820L, 0x20000830L, 81 0x00010820L, 0x00010830L, 0x20010820L, 0x20010830L, 82 0x00080000L, 0x00080010L, 0x20080000L, 0x20080010L, 83 0x00090000L, 0x00090010L, 0x20090000L, 0x20090010L, 84 0x00080800L, 0x00080810L, 0x20080800L, 0x20080810L, 85 0x00090800L, 0x00090810L, 0x20090800L, 0x20090810L, 86 0x00080020L, 0x00080030L, 0x20080020L, 0x20080030L, 87 0x00090020L, 0x00090030L, 0x20090020L, 0x20090030L, 88 0x00080820L, 0x00080830L, 0x20080820L, 0x20080830L, 89 0x00090820L, 0x00090830L, 0x20090820L, 0x20090830L, 90 }, 91 { 92 /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */ 93 0x00000000L, 0x02000000L, 0x00002000L, 0x02002000L, 94 0x00200000L, 0x02200000L, 0x00202000L, 0x02202000L, 95 0x00000004L, 0x02000004L, 0x00002004L, 0x02002004L, 96 0x00200004L, 0x02200004L, 0x00202004L, 0x02202004L, 97 0x00000400L, 0x02000400L, 0x00002400L, 0x02002400L, 98 0x00200400L, 0x02200400L, 0x00202400L, 0x02202400L, 99 0x00000404L, 0x02000404L, 0x00002404L, 0x02002404L, 100 0x00200404L, 0x02200404L, 0x00202404L, 0x02202404L, 101 0x10000000L, 0x12000000L, 0x10002000L, 0x12002000L, 102 0x10200000L, 0x12200000L, 0x10202000L, 0x12202000L, 103 0x10000004L, 0x12000004L, 0x10002004L, 0x12002004L, 104 0x10200004L, 0x12200004L, 0x10202004L, 0x12202004L, 105 0x10000400L, 0x12000400L, 0x10002400L, 0x12002400L, 106 0x10200400L, 0x12200400L, 0x10202400L, 0x12202400L, 107 0x10000404L, 0x12000404L, 0x10002404L, 0x12002404L, 108 0x10200404L, 0x12200404L, 0x10202404L, 0x12202404L, 109 }, 110 { 111 /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */ 112 0x00000000L, 0x00000001L, 0x00040000L, 0x00040001L, 113 0x01000000L, 0x01000001L, 0x01040000L, 0x01040001L, 114 0x00000002L, 0x00000003L, 0x00040002L, 0x00040003L, 115 0x01000002L, 0x01000003L, 0x01040002L, 0x01040003L, 116 0x00000200L, 0x00000201L, 0x00040200L, 0x00040201L, 117 0x01000200L, 0x01000201L, 0x01040200L, 0x01040201L, 118 0x00000202L, 0x00000203L, 0x00040202L, 0x00040203L, 119 0x01000202L, 0x01000203L, 0x01040202L, 0x01040203L, 120 0x08000000L, 0x08000001L, 0x08040000L, 0x08040001L, 121 0x09000000L, 0x09000001L, 0x09040000L, 0x09040001L, 122 0x08000002L, 0x08000003L, 0x08040002L, 0x08040003L, 123 0x09000002L, 0x09000003L, 0x09040002L, 0x09040003L, 124 0x08000200L, 0x08000201L, 0x08040200L, 0x08040201L, 125 0x09000200L, 0x09000201L, 0x09040200L, 0x09040201L, 126 0x08000202L, 0x08000203L, 0x08040202L, 0x08040203L, 127 0x09000202L, 0x09000203L, 0x09040202L, 0x09040203L, 128 }, 129 { 130 /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */ 131 0x00000000L, 0x00100000L, 0x00000100L, 0x00100100L, 132 0x00000008L, 0x00100008L, 0x00000108L, 0x00100108L, 133 0x00001000L, 0x00101000L, 0x00001100L, 0x00101100L, 134 0x00001008L, 0x00101008L, 0x00001108L, 0x00101108L, 135 0x04000000L, 0x04100000L, 0x04000100L, 0x04100100L, 136 0x04000008L, 0x04100008L, 0x04000108L, 0x04100108L, 137 0x04001000L, 0x04101000L, 0x04001100L, 0x04101100L, 138 0x04001008L, 0x04101008L, 0x04001108L, 0x04101108L, 139 0x00020000L, 0x00120000L, 0x00020100L, 0x00120100L, 140 0x00020008L, 0x00120008L, 0x00020108L, 0x00120108L, 141 0x00021000L, 0x00121000L, 0x00021100L, 0x00121100L, 142 0x00021008L, 0x00121008L, 0x00021108L, 0x00121108L, 143 0x04020000L, 0x04120000L, 0x04020100L, 0x04120100L, 144 0x04020008L, 0x04120008L, 0x04020108L, 0x04120108L, 145 0x04021000L, 0x04121000L, 0x04021100L, 0x04121100L, 146 0x04021008L, 0x04121008L, 0x04021108L, 0x04121108L, 147 }, 148 { 149 /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ 150 0x00000000L, 0x10000000L, 0x00010000L, 0x10010000L, 151 0x00000004L, 0x10000004L, 0x00010004L, 0x10010004L, 152 0x20000000L, 0x30000000L, 0x20010000L, 0x30010000L, 153 0x20000004L, 0x30000004L, 0x20010004L, 0x30010004L, 154 0x00100000L, 0x10100000L, 0x00110000L, 0x10110000L, 155 0x00100004L, 0x10100004L, 0x00110004L, 0x10110004L, 156 0x20100000L, 0x30100000L, 0x20110000L, 0x30110000L, 157 0x20100004L, 0x30100004L, 0x20110004L, 0x30110004L, 158 0x00001000L, 0x10001000L, 0x00011000L, 0x10011000L, 159 0x00001004L, 0x10001004L, 0x00011004L, 0x10011004L, 160 0x20001000L, 0x30001000L, 0x20011000L, 0x30011000L, 161 0x20001004L, 0x30001004L, 0x20011004L, 0x30011004L, 162 0x00101000L, 0x10101000L, 0x00111000L, 0x10111000L, 163 0x00101004L, 0x10101004L, 0x00111004L, 0x10111004L, 164 0x20101000L, 0x30101000L, 0x20111000L, 0x30111000L, 165 0x20101004L, 0x30101004L, 0x20111004L, 0x30111004L, 166 }, 167 { 168 /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */ 169 0x00000000L, 0x08000000L, 0x00000008L, 0x08000008L, 170 0x00000400L, 0x08000400L, 0x00000408L, 0x08000408L, 171 0x00020000L, 0x08020000L, 0x00020008L, 0x08020008L, 172 0x00020400L, 0x08020400L, 0x00020408L, 0x08020408L, 173 0x00000001L, 0x08000001L, 0x00000009L, 0x08000009L, 174 0x00000401L, 0x08000401L, 0x00000409L, 0x08000409L, 175 0x00020001L, 0x08020001L, 0x00020009L, 0x08020009L, 176 0x00020401L, 0x08020401L, 0x00020409L, 0x08020409L, 177 0x02000000L, 0x0A000000L, 0x02000008L, 0x0A000008L, 178 0x02000400L, 0x0A000400L, 0x02000408L, 0x0A000408L, 179 0x02020000L, 0x0A020000L, 0x02020008L, 0x0A020008L, 180 0x02020400L, 0x0A020400L, 0x02020408L, 0x0A020408L, 181 0x02000001L, 0x0A000001L, 0x02000009L, 0x0A000009L, 182 0x02000401L, 0x0A000401L, 0x02000409L, 0x0A000409L, 183 0x02020001L, 0x0A020001L, 0x02020009L, 0x0A020009L, 184 0x02020401L, 0x0A020401L, 0x02020409L, 0x0A020409L, 185 }, 186 { 187 /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */ 188 0x00000000L, 0x00000100L, 0x00080000L, 0x00080100L, 189 0x01000000L, 0x01000100L, 0x01080000L, 0x01080100L, 190 0x00000010L, 0x00000110L, 0x00080010L, 0x00080110L, 191 0x01000010L, 0x01000110L, 0x01080010L, 0x01080110L, 192 0x00200000L, 0x00200100L, 0x00280000L, 0x00280100L, 193 0x01200000L, 0x01200100L, 0x01280000L, 0x01280100L, 194 0x00200010L, 0x00200110L, 0x00280010L, 0x00280110L, 195 0x01200010L, 0x01200110L, 0x01280010L, 0x01280110L, 196 0x00000200L, 0x00000300L, 0x00080200L, 0x00080300L, 197 0x01000200L, 0x01000300L, 0x01080200L, 0x01080300L, 198 0x00000210L, 0x00000310L, 0x00080210L, 0x00080310L, 199 0x01000210L, 0x01000310L, 0x01080210L, 0x01080310L, 200 0x00200200L, 0x00200300L, 0x00280200L, 0x00280300L, 201 0x01200200L, 0x01200300L, 0x01280200L, 0x01280300L, 202 0x00200210L, 0x00200310L, 0x00280210L, 0x00280310L, 203 0x01200210L, 0x01200310L, 0x01280210L, 0x01280310L, 204 }, 205 { 206 /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */ 207 0x00000000L, 0x04000000L, 0x00040000L, 0x04040000L, 208 0x00000002L, 0x04000002L, 0x00040002L, 0x04040002L, 209 0x00002000L, 0x04002000L, 0x00042000L, 0x04042000L, 210 0x00002002L, 0x04002002L, 0x00042002L, 0x04042002L, 211 0x00000020L, 0x04000020L, 0x00040020L, 0x04040020L, 212 0x00000022L, 0x04000022L, 0x00040022L, 0x04040022L, 213 0x00002020L, 0x04002020L, 0x00042020L, 0x04042020L, 214 0x00002022L, 0x04002022L, 0x00042022L, 0x04042022L, 215 0x00000800L, 0x04000800L, 0x00040800L, 0x04040800L, 216 0x00000802L, 0x04000802L, 0x00040802L, 0x04040802L, 217 0x00002800L, 0x04002800L, 0x00042800L, 0x04042800L, 218 0x00002802L, 0x04002802L, 0x00042802L, 0x04042802L, 219 0x00000820L, 0x04000820L, 0x00040820L, 0x04040820L, 220 0x00000822L, 0x04000822L, 0x00040822L, 0x04040822L, 221 0x00002820L, 0x04002820L, 0x00042820L, 0x04042820L, 222 0x00002822L, 0x04002822L, 0x00042822L, 0x04042822L, 223 } 224 }; 225 226 const DES_LONG DES_SPtrans[8][64] = { 227 { 228 /* nibble 0 */ 229 0x02080800L, 0x00080000L, 0x02000002L, 0x02080802L, 230 0x02000000L, 0x00080802L, 0x00080002L, 0x02000002L, 231 0x00080802L, 0x02080800L, 0x02080000L, 0x00000802L, 232 0x02000802L, 0x02000000L, 0x00000000L, 0x00080002L, 233 0x00080000L, 0x00000002L, 0x02000800L, 0x00080800L, 234 0x02080802L, 0x02080000L, 0x00000802L, 0x02000800L, 235 0x00000002L, 0x00000800L, 0x00080800L, 0x02080002L, 236 0x00000800L, 0x02000802L, 0x02080002L, 0x00000000L, 237 0x00000000L, 0x02080802L, 0x02000800L, 0x00080002L, 238 0x02080800L, 0x00080000L, 0x00000802L, 0x02000800L, 239 0x02080002L, 0x00000800L, 0x00080800L, 0x02000002L, 240 0x00080802L, 0x00000002L, 0x02000002L, 0x02080000L, 241 0x02080802L, 0x00080800L, 0x02080000L, 0x02000802L, 242 0x02000000L, 0x00000802L, 0x00080002L, 0x00000000L, 243 0x00080000L, 0x02000000L, 0x02000802L, 0x02080800L, 244 0x00000002L, 0x02080002L, 0x00000800L, 0x00080802L, 245 }, 246 { 247 /* nibble 1 */ 248 0x40108010L, 0x00000000L, 0x00108000L, 0x40100000L, 249 0x40000010L, 0x00008010L, 0x40008000L, 0x00108000L, 250 0x00008000L, 0x40100010L, 0x00000010L, 0x40008000L, 251 0x00100010L, 0x40108000L, 0x40100000L, 0x00000010L, 252 0x00100000L, 0x40008010L, 0x40100010L, 0x00008000L, 253 0x00108010L, 0x40000000L, 0x00000000L, 0x00100010L, 254 0x40008010L, 0x00108010L, 0x40108000L, 0x40000010L, 255 0x40000000L, 0x00100000L, 0x00008010L, 0x40108010L, 256 0x00100010L, 0x40108000L, 0x40008000L, 0x00108010L, 257 0x40108010L, 0x00100010L, 0x40000010L, 0x00000000L, 258 0x40000000L, 0x00008010L, 0x00100000L, 0x40100010L, 259 0x00008000L, 0x40000000L, 0x00108010L, 0x40008010L, 260 0x40108000L, 0x00008000L, 0x00000000L, 0x40000010L, 261 0x00000010L, 0x40108010L, 0x00108000L, 0x40100000L, 262 0x40100010L, 0x00100000L, 0x00008010L, 0x40008000L, 263 0x40008010L, 0x00000010L, 0x40100000L, 0x00108000L, 264 }, 265 { 266 /* nibble 2 */ 267 0x04000001L, 0x04040100L, 0x00000100L, 0x04000101L, 268 0x00040001L, 0x04000000L, 0x04000101L, 0x00040100L, 269 0x04000100L, 0x00040000L, 0x04040000L, 0x00000001L, 270 0x04040101L, 0x00000101L, 0x00000001L, 0x04040001L, 271 0x00000000L, 0x00040001L, 0x04040100L, 0x00000100L, 272 0x00000101L, 0x04040101L, 0x00040000L, 0x04000001L, 273 0x04040001L, 0x04000100L, 0x00040101L, 0x04040000L, 274 0x00040100L, 0x00000000L, 0x04000000L, 0x00040101L, 275 0x04040100L, 0x00000100L, 0x00000001L, 0x00040000L, 276 0x00000101L, 0x00040001L, 0x04040000L, 0x04000101L, 277 0x00000000L, 0x04040100L, 0x00040100L, 0x04040001L, 278 0x00040001L, 0x04000000L, 0x04040101L, 0x00000001L, 279 0x00040101L, 0x04000001L, 0x04000000L, 0x04040101L, 280 0x00040000L, 0x04000100L, 0x04000101L, 0x00040100L, 281 0x04000100L, 0x00000000L, 0x04040001L, 0x00000101L, 282 0x04000001L, 0x00040101L, 0x00000100L, 0x04040000L, 283 }, 284 { 285 /* nibble 3 */ 286 0x00401008L, 0x10001000L, 0x00000008L, 0x10401008L, 287 0x00000000L, 0x10400000L, 0x10001008L, 0x00400008L, 288 0x10401000L, 0x10000008L, 0x10000000L, 0x00001008L, 289 0x10000008L, 0x00401008L, 0x00400000L, 0x10000000L, 290 0x10400008L, 0x00401000L, 0x00001000L, 0x00000008L, 291 0x00401000L, 0x10001008L, 0x10400000L, 0x00001000L, 292 0x00001008L, 0x00000000L, 0x00400008L, 0x10401000L, 293 0x10001000L, 0x10400008L, 0x10401008L, 0x00400000L, 294 0x10400008L, 0x00001008L, 0x00400000L, 0x10000008L, 295 0x00401000L, 0x10001000L, 0x00000008L, 0x10400000L, 296 0x10001008L, 0x00000000L, 0x00001000L, 0x00400008L, 297 0x00000000L, 0x10400008L, 0x10401000L, 0x00001000L, 298 0x10000000L, 0x10401008L, 0x00401008L, 0x00400000L, 299 0x10401008L, 0x00000008L, 0x10001000L, 0x00401008L, 300 0x00400008L, 0x00401000L, 0x10400000L, 0x10001008L, 301 0x00001008L, 0x10000000L, 0x10000008L, 0x10401000L, 302 }, 303 { 304 /* nibble 4 */ 305 0x08000000L, 0x00010000L, 0x00000400L, 0x08010420L, 306 0x08010020L, 0x08000400L, 0x00010420L, 0x08010000L, 307 0x00010000L, 0x00000020L, 0x08000020L, 0x00010400L, 308 0x08000420L, 0x08010020L, 0x08010400L, 0x00000000L, 309 0x00010400L, 0x08000000L, 0x00010020L, 0x00000420L, 310 0x08000400L, 0x00010420L, 0x00000000L, 0x08000020L, 311 0x00000020L, 0x08000420L, 0x08010420L, 0x00010020L, 312 0x08010000L, 0x00000400L, 0x00000420L, 0x08010400L, 313 0x08010400L, 0x08000420L, 0x00010020L, 0x08010000L, 314 0x00010000L, 0x00000020L, 0x08000020L, 0x08000400L, 315 0x08000000L, 0x00010400L, 0x08010420L, 0x00000000L, 316 0x00010420L, 0x08000000L, 0x00000400L, 0x00010020L, 317 0x08000420L, 0x00000400L, 0x00000000L, 0x08010420L, 318 0x08010020L, 0x08010400L, 0x00000420L, 0x00010000L, 319 0x00010400L, 0x08010020L, 0x08000400L, 0x00000420L, 320 0x00000020L, 0x00010420L, 0x08010000L, 0x08000020L, 321 }, 322 { 323 /* nibble 5 */ 324 0x80000040L, 0x00200040L, 0x00000000L, 0x80202000L, 325 0x00200040L, 0x00002000L, 0x80002040L, 0x00200000L, 326 0x00002040L, 0x80202040L, 0x00202000L, 0x80000000L, 327 0x80002000L, 0x80000040L, 0x80200000L, 0x00202040L, 328 0x00200000L, 0x80002040L, 0x80200040L, 0x00000000L, 329 0x00002000L, 0x00000040L, 0x80202000L, 0x80200040L, 330 0x80202040L, 0x80200000L, 0x80000000L, 0x00002040L, 331 0x00000040L, 0x00202000L, 0x00202040L, 0x80002000L, 332 0x00002040L, 0x80000000L, 0x80002000L, 0x00202040L, 333 0x80202000L, 0x00200040L, 0x00000000L, 0x80002000L, 334 0x80000000L, 0x00002000L, 0x80200040L, 0x00200000L, 335 0x00200040L, 0x80202040L, 0x00202000L, 0x00000040L, 336 0x80202040L, 0x00202000L, 0x00200000L, 0x80002040L, 337 0x80000040L, 0x80200000L, 0x00202040L, 0x00000000L, 338 0x00002000L, 0x80000040L, 0x80002040L, 0x80202000L, 339 0x80200000L, 0x00002040L, 0x00000040L, 0x80200040L, 340 }, 341 { 342 /* nibble 6 */ 343 0x00004000L, 0x00000200L, 0x01000200L, 0x01000004L, 344 0x01004204L, 0x00004004L, 0x00004200L, 0x00000000L, 345 0x01000000L, 0x01000204L, 0x00000204L, 0x01004000L, 346 0x00000004L, 0x01004200L, 0x01004000L, 0x00000204L, 347 0x01000204L, 0x00004000L, 0x00004004L, 0x01004204L, 348 0x00000000L, 0x01000200L, 0x01000004L, 0x00004200L, 349 0x01004004L, 0x00004204L, 0x01004200L, 0x00000004L, 350 0x00004204L, 0x01004004L, 0x00000200L, 0x01000000L, 351 0x00004204L, 0x01004000L, 0x01004004L, 0x00000204L, 352 0x00004000L, 0x00000200L, 0x01000000L, 0x01004004L, 353 0x01000204L, 0x00004204L, 0x00004200L, 0x00000000L, 354 0x00000200L, 0x01000004L, 0x00000004L, 0x01000200L, 355 0x00000000L, 0x01000204L, 0x01000200L, 0x00004200L, 356 0x00000204L, 0x00004000L, 0x01004204L, 0x01000000L, 357 0x01004200L, 0x00000004L, 0x00004004L, 0x01004204L, 358 0x01000004L, 0x01004200L, 0x01004000L, 0x00004004L, 359 }, 360 { 361 /* nibble 7 */ 362 0x20800080L, 0x20820000L, 0x00020080L, 0x00000000L, 363 0x20020000L, 0x00800080L, 0x20800000L, 0x20820080L, 364 0x00000080L, 0x20000000L, 0x00820000L, 0x00020080L, 365 0x00820080L, 0x20020080L, 0x20000080L, 0x20800000L, 366 0x00020000L, 0x00820080L, 0x00800080L, 0x20020000L, 367 0x20820080L, 0x20000080L, 0x00000000L, 0x00820000L, 368 0x20000000L, 0x00800000L, 0x20020080L, 0x20800080L, 369 0x00800000L, 0x00020000L, 0x20820000L, 0x00000080L, 370 0x00800000L, 0x00020000L, 0x20000080L, 0x20820080L, 371 0x00020080L, 0x20000000L, 0x00000000L, 0x00820000L, 372 0x20800080L, 0x20020080L, 0x20020000L, 0x00800080L, 373 0x20820000L, 0x00000080L, 0x00800080L, 0x20020000L, 374 0x20820080L, 0x00800000L, 0x20800000L, 0x20000080L, 375 0x00820000L, 0x00020080L, 0x20020080L, 0x20800000L, 376 0x00000080L, 0x20820000L, 0x00820080L, 0x00000000L, 377 0x20000000L, 0x20800080L, 0x00020000L, 0x00820080L, 378 } 379 }; 380 381 382 typedef unsigned char DES_cblock[8]; 383 typedef /* const */ unsigned char const_DES_cblock[8]; 384 385 386 typedef struct DES_ks { 387 union { 388 DES_cblock cblock; 389 /* 390 * make sure things are correct size on machines with 8 byte longs 391 */ 392 DES_LONG deslong[2]; 393 } ks[16]; 394 } DES_key_schedule; 395 396 397 # define DES_ENCRYPT 1 398 # define DES_DECRYPT 0 399 400 401 402 void DES_ecb3_encrypt(const_DES_cblock *input, DES_cblock *output, 403 DES_key_schedule *ks1, DES_key_schedule *ks2, 404 DES_key_schedule *ks3, int enc); 405 406 407 void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc); 408 409 void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc); 410 411 void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1, 412 DES_key_schedule *ks2, DES_key_schedule *ks3); 413 void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1, 414 DES_key_schedule *ks2, DES_key_schedule *ks3); 415 416 void DES_set_key_unchecked(const_DES_cblock *key, DES_key_schedule *schedule); 417 418 419 420 /************************************************************************ 421 * 3DES-ECB加密方式 422 * 8字节密钥，加密内容8位补齐，补齐方式为：PKCS7。 423 * 424 * file: des3_func.c.c 425 * gcc -Wall -O2 -o des3_func des3_func.c 426 * 427 * @author Edward 428 * 429 ************************************************************************/ 430 int main(int argc, char *argv[]) 431 { 432 int i = 0; 433 int len = 0; 434 int nlen = 0; 435 int klen = 0; 436 437 char ch = '\0'; 438 char *k = "ABCDEFGHABCDEFGHABCDEFGH"; 439 440 char *data = "123456789ABCDEFG"; /* 原始明文 */ 441 442 unsigned char key[LEN_OF_KEY]; 443 unsigned char src[64] = {0}; 444 unsigned char out[64] = {0}; 445 unsigned char tmp[64] = {0}; 446 447 unsigned char block[8] = {0}; 448 DES_key_schedule ks1, ks2, ks3; 449 450 /* 设置密码表 */ 451 klen = strlen(k); 452 memcpy(key, k, klen); 453 memset(key + klen, 0x00, LEN_OF_KEY - klen); 454 455 456 memcpy(block, key, sizeof(block)); 457 DES_set_key_unchecked((const_DES_cblock *)block, &ks1); 458 459 memcpy(block, key + 8, sizeof(block)); 460 DES_set_key_unchecked((const_DES_cblock *)block, &ks2); 461 462 memcpy(block, key + 16, sizeof(block)); 463 DES_set_key_unchecked((const_DES_cblock *)block, &ks3); 464 465 nlen = strlen(data); 466 memcpy(src, data, nlen); 467 468 //len = (nlen / 8 + (nlen % 8 ? 1: 0)) * 8; 469 len = (nlen / 8 + 1) * 8; 470 471 ch = 8 - nlen % 8; 472 //memset(src + nlen, ch, (8 - nlen % 8) % 8); 473 memset(src + nlen, ch, (8 - nlen % 8)); 474 475 for (i = 0; i < len; i += 8) { 476 DES_ecb3_encrypt((const_DES_cblock *)(src + i), (DES_cblock *)(out + i), &ks1, &ks2, &ks3, DES_ENCRYPT); 477 } 478 479 printf("encrypted Hex:"); 480 for (i = 0; i < len; i++) { 481 printf("%02X" , *(out + i)); 482 } 483 printf("\n"); 484 485 for (i = 0; i < len; i += 8) { 486 DES_ecb3_encrypt((const_DES_cblock *)(out + i), (DES_cblock *)(tmp + i), &ks1, &ks2, &ks3, DES_DECRYPT); 487 } 488 489 printf("decrypted Hex:"); 490 for (i = 0; i < len; i++) { 491 printf("%02X", *(tmp + i)); 492 } 493 printf("\n"); 494 printf("decrypted Bin:"); 495 for (i = 0; i < len; i++) { 496 printf("%c", *(tmp + i)); 497 } 498 printf("\n"); 499 500 return 0; 501 } 502 503 504 void DES_set_key_unchecked(const_DES_cblock *key, DES_key_schedule *schedule) 505 { 506 static const int shifts2[16] = 507 { 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0 }; 508 register DES_LONG c, d, t, s, t2; 509 register const unsigned char *in; 510 register DES_LONG *k; 511 register int i; 512 513 514 k = &schedule->ks->deslong[0]; 515 in = &(*key)[0]; 516 517 c2l(in, c); 518 c2l(in, d); 519 520 /* 521 * do PC1 in 47 simple operations :-) Thanks to John Fletcher 522 * (john_fletcher@lccmail.ocf.llnl.gov) for the inspiration. :-) 523 */ 524 PERM_OP(d, c, t, 4, 0x0f0f0f0fL); 525 HPERM_OP(c, t, -2, 0xcccc0000L); 526 HPERM_OP(d, t, -2, 0xcccc0000L); 527 PERM_OP(d, c, t, 1, 0x55555555L); 528 PERM_OP(c, d, t, 8, 0x00ff00ffL); 529 PERM_OP(d, c, t, 1, 0x55555555L); 530 d = (((d & 0x000000ffL) << 16L) | (d & 0x0000ff00L) | 531 ((d & 0x00ff0000L) >> 16L) | ((c & 0xf0000000L) >> 4L)); 532 c &= 0x0fffffffL; 533 534 for (i = 0; i < ITERATIONS; i++) { 535 if (shifts2[i]) { 536 c = ((c >> 2L) | (c << 26L)); 537 d = ((d >> 2L) | (d << 26L)); 538 } else { 539 c = ((c >> 1L) | (c << 27L)); 540 d = ((d >> 1L) | (d << 27L)); 541 } 542 c &= 0x0fffffffL; 543 d &= 0x0fffffffL; 544 /* 545 * could be a few less shifts but I am to lazy at this point in time 546 * to investigate 547 */ 548 s = des_skb[0][(c) & 0x3f] | 549 des_skb[1][((c >> 6L) & 0x03) | ((c >> 7L) & 0x3c)] | 550 des_skb[2][((c >> 13L) & 0x0f) | ((c >> 14L) & 0x30)] | 551 des_skb[3][((c >> 20L) & 0x01) | ((c >> 21L) & 0x06) | 552 ((c >> 22L) & 0x38)]; 553 t = des_skb[4][(d) & 0x3f] | 554 des_skb[5][((d >> 7L) & 0x03) | ((d >> 8L) & 0x3c)] | 555 des_skb[6][(d >> 15L) & 0x3f] | 556 des_skb[7][((d >> 21L) & 0x0f) | ((d >> 22L) & 0x30)]; 557 558 /* table contained 0213 4657 */ 559 t2 = ((t << 16L) | (s & 0x0000ffffL)) & 0xffffffffL; 560 *(k++) = ROTATE(t2, 30) & 0xffffffffL; 561 562 t2 = ((s >> 16L) | (t & 0xffff0000L)); 563 *(k++) = ROTATE(t2, 26) & 0xffffffffL; 564 } 565 } 566 567 568 void DES_ecb3_encrypt(const_DES_cblock *input, DES_cblock *output, 569 DES_key_schedule *ks1, DES_key_schedule *ks2, 570 DES_key_schedule *ks3, int enc) 571 { 572 register DES_LONG l0, l1; 573 DES_LONG ll[2]; 574 const unsigned char *in = &(*input)[0]; 575 unsigned char *out = &(*output)[0]; 576 577 c2l(in, l0); 578 c2l(in, l1); 579 ll[0] = l0; 580 ll[1] = l1; 581 582 if (enc) 583 DES_encrypt3(ll, ks1, ks2, ks3); 584 else 585 DES_decrypt3(ll, ks1, ks2, ks3); 586 l0 = ll[0]; 587 l1 = ll[1]; 588 l2c(l0, out); 589 l2c(l1, out); 590 } 591 592 593 void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc) 594 { 595 register DES_LONG l, r, t, u; 596 /* 597 #ifdef DES_PTR 598 register const unsigned char *des_SP = (const unsigned char *)DES_SPtrans; 599 #endif 600 #ifndef DES_UNROLL 601 602 #endif*/ 603 register int i; 604 register DES_LONG *s; 605 606 r = data[0]; 607 l = data[1]; 608 609 IP(r, l); 610 /* 611 * Things have been modified so that the initial rotate is done outside 612 * the loop. This required the DES_SPtrans values in sp.h to be rotated 613 * 1 bit to the right. One perl script later and things have a 5% speed 614 * up on a sparc2. Thanks to Richard Outerbridge 615 * <71755.204@CompuServe.COM> for pointing this out. 616 */ 617 /* clear the top bits on machines with 8byte longs */ 618 /* shift left by 2 */ 619 r = ROTATE(r, 29) & 0xffffffffL; 620 l = ROTATE(l, 29) & 0xffffffffL; 621 622 s = ks->ks->deslong; 623 /* 624 * I don't know if it is worth the effort of loop unrolling the inner 625 * loop 626 */ 627 if (enc) { 628 629 for (i = 0; i < 32; i += 4) { 630 D_ENCRYPT(l, r, i + 0); /* 1 */ 631 D_ENCRYPT(r, l, i + 2); /* 2 */ 632 } 633 } else { 634 635 for (i = 30; i > 0; i -= 4) { 636 D_ENCRYPT(l, r, i - 0); /* 16 */ 637 D_ENCRYPT(r, l, i - 2); /* 15 */ 638 } 639 } 640 641 /* rotate and clear the top bits on machines with 8byte longs */ 642 l = ROTATE(l, 3) & 0xffffffffL; 643 r = ROTATE(r, 3) & 0xffffffffL; 644 645 FP(r, l); 646 data[0] = l; 647 data[1] = r; 648 l = r = t = u = 0; 649 } 650 651 void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc) 652 { 653 register DES_LONG l, r, t, u; 654 /* 655 #ifdef DES_PTR 656 register const unsigned char *des_SP = (const unsigned char *)DES_SPtrans; 657 #endif 658 #ifndef DES_UNROLL 659 register int i; 660 #endif*/ 661 register int i; 662 register DES_LONG *s; 663 664 r = data[0]; 665 l = data[1]; 666 667 /* 668 * Things have been modified so that the initial rotate is done outside 669 * the loop. This required the DES_SPtrans values in sp.h to be rotated 670 * 1 bit to the right. One perl script later and things have a 5% speed 671 * up on a sparc2. Thanks to Richard Outerbridge 672 * <71755.204@CompuServe.COM> for pointing this out. 673 */ 674 /* clear the top bits on machines with 8byte longs */ 675 r = ROTATE(r, 29) & 0xffffffffL; 676 l = ROTATE(l, 29) & 0xffffffffL; 677 678 s = ks->ks->deslong; 679 /* 680 * I don't know if it is worth the effort of loop unrolling the inner 681 * loop 682 */ 683 if (enc) { 684 685 for (i = 0; i < 32; i += 4) { 686 D_ENCRYPT(l, r, i + 0); /* 1 */ 687 D_ENCRYPT(r, l, i + 2); /* 2 */ 688 } 689 690 } else { 691 692 for (i = 30; i > 0; i -= 4) { 693 D_ENCRYPT(l, r, i - 0); /* 16 */ 694 D_ENCRYPT(r, l, i - 2); /* 15 */ 695 } 696 697 } 698 /* rotate and clear the top bits on machines with 8byte longs */ 699 data[0] = ROTATE(l, 3) & 0xffffffffL; 700 data[1] = ROTATE(r, 3) & 0xffffffffL; 701 l = r = t = u = 0; 702 } 703 704 void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1, 705 DES_key_schedule *ks2, DES_key_schedule *ks3) 706 { 707 register DES_LONG l, r; 708 709 l = data[0]; 710 r = data[1]; 711 IP(l, r); 712 data[0] = l; 713 data[1] = r; 714 DES_encrypt2((DES_LONG *)data, ks1, DES_ENCRYPT); 715 DES_encrypt2((DES_LONG *)data, ks2, DES_DECRYPT); 716 DES_encrypt2((DES_LONG *)data, ks3, DES_ENCRYPT); 717 l = data[0]; 718 r = data[1]; 719 FP(r, l); 720 data[0] = l; 721 data[1] = r; 722 } 723 724 void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1, 725 DES_key_schedule *ks2, DES_key_schedule *ks3) 726 { 727 register DES_LONG l, r; 728 729 l = data[0]; 730 r = data[1]; 731 IP(l, r); 732 data[0] = l; 733 data[1] = r; 734 DES_encrypt2((DES_LONG *)data, ks3, DES_DECRYPT); 735 DES_encrypt2((DES_LONG *)data, ks2, DES_ENCRYPT); 736 DES_encrypt2((DES_LONG *)data, ks1, DES_DECRYPT); 737 l = data[0]; 738 r = data[1]; 739 FP(r, l); 740 data[0] = l; 741 data[1] = r; 742 }
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