1 /* vi:set ts=8 sts=4 sw=4: 2 * 3 * VIM - Vi IMproved by Bram Moolenaar 4 * 5 * Do ":help uganda" in Vim to read copying and usage conditions. 6 * Do ":help credits" in Vim to see a list of people who contributed. 7 * See README.txt for an overview of the Vim source code. 8 * 9 * Blowfish encryption for Vim; in Blowfish output feedback mode. 10 * Contributed by Mohsin Ahmed, http://www.cs.albany.edu/~mosh 11 * Based on http://www.schneier.com/blowfish.html by Bruce Schneier. 12 */ 13 14 #include "vim.h" 15 16 #if defined(FEAT_CRYPT) 17 18 #define ARRAY_LENGTH(A) (sizeof(A)/sizeof(A[0])) 19 20 #define BF_BLOCK 8 21 #define BF_BLOCK_MASK 7 22 #define BF_OFB_LEN (8*(BF_BLOCK)) 23 24 typedef union { 25 UINT32_T ul[2]; 26 char_u uc[8]; 27 } block8; 28 29 #if defined(WIN3264) || defined(DOS32) 30 /* MS-Windows is always little endian */ 31 #else 32 # ifdef HAVE_CONFIG_H 33 /* in configure.in AC_C_BIGENDIAN() defines WORDS_BIGENDIAN when needed */ 34 # else 35 error! 36 Please change this code to define WORDS_BIGENDIAN for big-endian machines. 37 # endif 38 #endif 39 40 static void bf_e_block __ARGS((UINT32_T *p_xl, UINT32_T *p_xr)); 41 static void bf_e_cblock __ARGS((char_u *block)); 42 static int bf_check_tables __ARGS((UINT32_T ipa[18], UINT32_T sbi[4][256], UINT32_T val)); 43 static int bf_self_test __ARGS((void)); 44 45 /* Blowfish code */ 46 static UINT32_T pax[18]; 47 static UINT32_T ipa[18] = { 48 0x243f6a88u, 0x85a308d3u, 0x13198a2eu, 49 0x03707344u, 0xa4093822u, 0x299f31d0u, 50 0x082efa98u, 0xec4e6c89u, 0x452821e6u, 51 0x38d01377u, 0xbe5466cfu, 0x34e90c6cu, 52 0xc0ac29b7u, 0xc97c50ddu, 0x3f84d5b5u, 53 0xb5470917u, 0x9216d5d9u, 0x8979fb1bu 54 }; 55 56 static UINT32_T sbx[4][256]; 57 static UINT32_T sbi[4][256] = { 58 {0xd1310ba6u, 0x98dfb5acu, 0x2ffd72dbu, 0xd01adfb7u, 59 0xb8e1afedu, 0x6a267e96u, 0xba7c9045u, 0xf12c7f99u, 60 0x24a19947u, 0xb3916cf7u, 0x0801f2e2u, 0x858efc16u, 61 0x636920d8u, 0x71574e69u, 0xa458fea3u, 0xf4933d7eu, 62 0x0d95748fu, 0x728eb658u, 0x718bcd58u, 0x82154aeeu, 63 0x7b54a41du, 0xc25a59b5u, 0x9c30d539u, 0x2af26013u, 64 0xc5d1b023u, 0x286085f0u, 0xca417918u, 0xb8db38efu, 65 0x8e79dcb0u, 0x603a180eu, 0x6c9e0e8bu, 0xb01e8a3eu, 66 0xd71577c1u, 0xbd314b27u, 0x78af2fdau, 0x55605c60u, 67 0xe65525f3u, 0xaa55ab94u, 0x57489862u, 0x63e81440u, 68 0x55ca396au, 0x2aab10b6u, 0xb4cc5c34u, 0x1141e8ceu, 69 0xa15486afu, 0x7c72e993u, 0xb3ee1411u, 0x636fbc2au, 70 0x2ba9c55du, 0x741831f6u, 0xce5c3e16u, 0x9b87931eu, 71 0xafd6ba33u, 0x6c24cf5cu, 0x7a325381u, 0x28958677u, 72 0x3b8f4898u, 0x6b4bb9afu, 0xc4bfe81bu, 0x66282193u, 73 0x61d809ccu, 0xfb21a991u, 0x487cac60u, 0x5dec8032u, 74 0xef845d5du, 0xe98575b1u, 0xdc262302u, 0xeb651b88u, 75 0x23893e81u, 0xd396acc5u, 0x0f6d6ff3u, 0x83f44239u, 76 0x2e0b4482u, 0xa4842004u, 0x69c8f04au, 0x9e1f9b5eu, 77 0x21c66842u, 0xf6e96c9au, 0x670c9c61u, 0xabd388f0u, 78 0x6a51a0d2u, 0xd8542f68u, 0x960fa728u, 0xab5133a3u, 79 0x6eef0b6cu, 0x137a3be4u, 0xba3bf050u, 0x7efb2a98u, 80 0xa1f1651du, 0x39af0176u, 0x66ca593eu, 0x82430e88u, 81 0x8cee8619u, 0x456f9fb4u, 0x7d84a5c3u, 0x3b8b5ebeu, 82 0xe06f75d8u, 0x85c12073u, 0x401a449fu, 0x56c16aa6u, 83 0x4ed3aa62u, 0x363f7706u, 0x1bfedf72u, 0x429b023du, 84 0x37d0d724u, 0xd00a1248u, 0xdb0fead3u, 0x49f1c09bu, 85 0x075372c9u, 0x80991b7bu, 0x25d479d8u, 0xf6e8def7u, 86 0xe3fe501au, 0xb6794c3bu, 0x976ce0bdu, 0x04c006bau, 87 0xc1a94fb6u, 0x409f60c4u, 0x5e5c9ec2u, 0x196a2463u, 88 0x68fb6fafu, 0x3e6c53b5u, 0x1339b2ebu, 0x3b52ec6fu, 89 0x6dfc511fu, 0x9b30952cu, 0xcc814544u, 0xaf5ebd09u, 90 0xbee3d004u, 0xde334afdu, 0x660f2807u, 0x192e4bb3u, 91 0xc0cba857u, 0x45c8740fu, 0xd20b5f39u, 0xb9d3fbdbu, 92 0x5579c0bdu, 0x1a60320au, 0xd6a100c6u, 0x402c7279u, 93 0x679f25feu, 0xfb1fa3ccu, 0x8ea5e9f8u, 0xdb3222f8u, 94 0x3c7516dfu, 0xfd616b15u, 0x2f501ec8u, 0xad0552abu, 95 0x323db5fau, 0xfd238760u, 0x53317b48u, 0x3e00df82u, 96 0x9e5c57bbu, 0xca6f8ca0u, 0x1a87562eu, 0xdf1769dbu, 97 0xd542a8f6u, 0x287effc3u, 0xac6732c6u, 0x8c4f5573u, 98 0x695b27b0u, 0xbbca58c8u, 0xe1ffa35du, 0xb8f011a0u, 99 0x10fa3d98u, 0xfd2183b8u, 0x4afcb56cu, 0x2dd1d35bu, 100 0x9a53e479u, 0xb6f84565u, 0xd28e49bcu, 0x4bfb9790u, 101 0xe1ddf2dau, 0xa4cb7e33u, 0x62fb1341u, 0xcee4c6e8u, 102 0xef20cadau, 0x36774c01u, 0xd07e9efeu, 0x2bf11fb4u, 103 0x95dbda4du, 0xae909198u, 0xeaad8e71u, 0x6b93d5a0u, 104 0xd08ed1d0u, 0xafc725e0u, 0x8e3c5b2fu, 0x8e7594b7u, 105 0x8ff6e2fbu, 0xf2122b64u, 0x8888b812u, 0x900df01cu, 106 0x4fad5ea0u, 0x688fc31cu, 0xd1cff191u, 0xb3a8c1adu, 107 0x2f2f2218u, 0xbe0e1777u, 0xea752dfeu, 0x8b021fa1u, 108 0xe5a0cc0fu, 0xb56f74e8u, 0x18acf3d6u, 0xce89e299u, 109 0xb4a84fe0u, 0xfd13e0b7u, 0x7cc43b81u, 0xd2ada8d9u, 110 0x165fa266u, 0x80957705u, 0x93cc7314u, 0x211a1477u, 111 0xe6ad2065u, 0x77b5fa86u, 0xc75442f5u, 0xfb9d35cfu, 112 0xebcdaf0cu, 0x7b3e89a0u, 0xd6411bd3u, 0xae1e7e49u, 113 0x00250e2du, 0x2071b35eu, 0x226800bbu, 0x57b8e0afu, 114 0x2464369bu, 0xf009b91eu, 0x5563911du, 0x59dfa6aau, 115 0x78c14389u, 0xd95a537fu, 0x207d5ba2u, 0x02e5b9c5u, 116 0x83260376u, 0x6295cfa9u, 0x11c81968u, 0x4e734a41u, 117 0xb3472dcau, 0x7b14a94au, 0x1b510052u, 0x9a532915u, 118 0xd60f573fu, 0xbc9bc6e4u, 0x2b60a476u, 0x81e67400u, 119 0x08ba6fb5u, 0x571be91fu, 0xf296ec6bu, 0x2a0dd915u, 120 0xb6636521u, 0xe7b9f9b6u, 0xff34052eu, 0xc5855664u, 121 0x53b02d5du, 0xa99f8fa1u, 0x08ba4799u, 0x6e85076au}, 122 {0x4b7a70e9u, 0xb5b32944u, 0xdb75092eu, 0xc4192623u, 123 0xad6ea6b0u, 0x49a7df7du, 0x9cee60b8u, 0x8fedb266u, 124 0xecaa8c71u, 0x699a17ffu, 0x5664526cu, 0xc2b19ee1u, 125 0x193602a5u, 0x75094c29u, 0xa0591340u, 0xe4183a3eu, 126 0x3f54989au, 0x5b429d65u, 0x6b8fe4d6u, 0x99f73fd6u, 127 0xa1d29c07u, 0xefe830f5u, 0x4d2d38e6u, 0xf0255dc1u, 128 0x4cdd2086u, 0x8470eb26u, 0x6382e9c6u, 0x021ecc5eu, 129 0x09686b3fu, 0x3ebaefc9u, 0x3c971814u, 0x6b6a70a1u, 130 0x687f3584u, 0x52a0e286u, 0xb79c5305u, 0xaa500737u, 131 0x3e07841cu, 0x7fdeae5cu, 0x8e7d44ecu, 0x5716f2b8u, 132 0xb03ada37u, 0xf0500c0du, 0xf01c1f04u, 0x0200b3ffu, 133 0xae0cf51au, 0x3cb574b2u, 0x25837a58u, 0xdc0921bdu, 134 0xd19113f9u, 0x7ca92ff6u, 0x94324773u, 0x22f54701u, 135 0x3ae5e581u, 0x37c2dadcu, 0xc8b57634u, 0x9af3dda7u, 136 0xa9446146u, 0x0fd0030eu, 0xecc8c73eu, 0xa4751e41u, 137 0xe238cd99u, 0x3bea0e2fu, 0x3280bba1u, 0x183eb331u, 138 0x4e548b38u, 0x4f6db908u, 0x6f420d03u, 0xf60a04bfu, 139 0x2cb81290u, 0x24977c79u, 0x5679b072u, 0xbcaf89afu, 140 0xde9a771fu, 0xd9930810u, 0xb38bae12u, 0xdccf3f2eu, 141 0x5512721fu, 0x2e6b7124u, 0x501adde6u, 0x9f84cd87u, 142 0x7a584718u, 0x7408da17u, 0xbc9f9abcu, 0xe94b7d8cu, 143 0xec7aec3au, 0xdb851dfau, 0x63094366u, 0xc464c3d2u, 144 0xef1c1847u, 0x3215d908u, 0xdd433b37u, 0x24c2ba16u, 145 0x12a14d43u, 0x2a65c451u, 0x50940002u, 0x133ae4ddu, 146 0x71dff89eu, 0x10314e55u, 0x81ac77d6u, 0x5f11199bu, 147 0x043556f1u, 0xd7a3c76bu, 0x3c11183bu, 0x5924a509u, 148 0xf28fe6edu, 0x97f1fbfau, 0x9ebabf2cu, 0x1e153c6eu, 149 0x86e34570u, 0xeae96fb1u, 0x860e5e0au, 0x5a3e2ab3u, 150 0x771fe71cu, 0x4e3d06fau, 0x2965dcb9u, 0x99e71d0fu, 151 0x803e89d6u, 0x5266c825u, 0x2e4cc978u, 0x9c10b36au, 152 0xc6150ebau, 0x94e2ea78u, 0xa5fc3c53u, 0x1e0a2df4u, 153 0xf2f74ea7u, 0x361d2b3du, 0x1939260fu, 0x19c27960u, 154 0x5223a708u, 0xf71312b6u, 0xebadfe6eu, 0xeac31f66u, 155 0xe3bc4595u, 0xa67bc883u, 0xb17f37d1u, 0x018cff28u, 156 0xc332ddefu, 0xbe6c5aa5u, 0x65582185u, 0x68ab9802u, 157 0xeecea50fu, 0xdb2f953bu, 0x2aef7dadu, 0x5b6e2f84u, 158 0x1521b628u, 0x29076170u, 0xecdd4775u, 0x619f1510u, 159 0x13cca830u, 0xeb61bd96u, 0x0334fe1eu, 0xaa0363cfu, 160 0xb5735c90u, 0x4c70a239u, 0xd59e9e0bu, 0xcbaade14u, 161 0xeecc86bcu, 0x60622ca7u, 0x9cab5cabu, 0xb2f3846eu, 162 0x648b1eafu, 0x19bdf0cau, 0xa02369b9u, 0x655abb50u, 163 0x40685a32u, 0x3c2ab4b3u, 0x319ee9d5u, 0xc021b8f7u, 164 0x9b540b19u, 0x875fa099u, 0x95f7997eu, 0x623d7da8u, 165 0xf837889au, 0x97e32d77u, 0x11ed935fu, 0x16681281u, 166 0x0e358829u, 0xc7e61fd6u, 0x96dedfa1u, 0x7858ba99u, 167 0x57f584a5u, 0x1b227263u, 0x9b83c3ffu, 0x1ac24696u, 168 0xcdb30aebu, 0x532e3054u, 0x8fd948e4u, 0x6dbc3128u, 169 0x58ebf2efu, 0x34c6ffeau, 0xfe28ed61u, 0xee7c3c73u, 170 0x5d4a14d9u, 0xe864b7e3u, 0x42105d14u, 0x203e13e0u, 171 0x45eee2b6u, 0xa3aaabeau, 0xdb6c4f15u, 0xfacb4fd0u, 172 0xc742f442u, 0xef6abbb5u, 0x654f3b1du, 0x41cd2105u, 173 0xd81e799eu, 0x86854dc7u, 0xe44b476au, 0x3d816250u, 174 0xcf62a1f2u, 0x5b8d2646u, 0xfc8883a0u, 0xc1c7b6a3u, 175 0x7f1524c3u, 0x69cb7492u, 0x47848a0bu, 0x5692b285u, 176 0x095bbf00u, 0xad19489du, 0x1462b174u, 0x23820e00u, 177 0x58428d2au, 0x0c55f5eau, 0x1dadf43eu, 0x233f7061u, 178 0x3372f092u, 0x8d937e41u, 0xd65fecf1u, 0x6c223bdbu, 179 0x7cde3759u, 0xcbee7460u, 0x4085f2a7u, 0xce77326eu, 180 0xa6078084u, 0x19f8509eu, 0xe8efd855u, 0x61d99735u, 181 0xa969a7aau, 0xc50c06c2u, 0x5a04abfcu, 0x800bcadcu, 182 0x9e447a2eu, 0xc3453484u, 0xfdd56705u, 0x0e1e9ec9u, 183 0xdb73dbd3u, 0x105588cdu, 0x675fda79u, 0xe3674340u, 184 0xc5c43465u, 0x713e38d8u, 0x3d28f89eu, 0xf16dff20u, 185 0x153e21e7u, 0x8fb03d4au, 0xe6e39f2bu, 0xdb83adf7u}, 186 {0xe93d5a68u, 0x948140f7u, 0xf64c261cu, 0x94692934u, 187 0x411520f7u, 0x7602d4f7u, 0xbcf46b2eu, 0xd4a20068u, 188 0xd4082471u, 0x3320f46au, 0x43b7d4b7u, 0x500061afu, 189 0x1e39f62eu, 0x97244546u, 0x14214f74u, 0xbf8b8840u, 190 0x4d95fc1du, 0x96b591afu, 0x70f4ddd3u, 0x66a02f45u, 191 0xbfbc09ecu, 0x03bd9785u, 0x7fac6dd0u, 0x31cb8504u, 192 0x96eb27b3u, 0x55fd3941u, 0xda2547e6u, 0xabca0a9au, 193 0x28507825u, 0x530429f4u, 0x0a2c86dau, 0xe9b66dfbu, 194 0x68dc1462u, 0xd7486900u, 0x680ec0a4u, 0x27a18deeu, 195 0x4f3ffea2u, 0xe887ad8cu, 0xb58ce006u, 0x7af4d6b6u, 196 0xaace1e7cu, 0xd3375fecu, 0xce78a399u, 0x406b2a42u, 197 0x20fe9e35u, 0xd9f385b9u, 0xee39d7abu, 0x3b124e8bu, 198 0x1dc9faf7u, 0x4b6d1856u, 0x26a36631u, 0xeae397b2u, 199 0x3a6efa74u, 0xdd5b4332u, 0x6841e7f7u, 0xca7820fbu, 200 0xfb0af54eu, 0xd8feb397u, 0x454056acu, 0xba489527u, 201 0x55533a3au, 0x20838d87u, 0xfe6ba9b7u, 0xd096954bu, 202 0x55a867bcu, 0xa1159a58u, 0xcca92963u, 0x99e1db33u, 203 0xa62a4a56u, 0x3f3125f9u, 0x5ef47e1cu, 0x9029317cu, 204 0xfdf8e802u, 0x04272f70u, 0x80bb155cu, 0x05282ce3u, 205 0x95c11548u, 0xe4c66d22u, 0x48c1133fu, 0xc70f86dcu, 206 0x07f9c9eeu, 0x41041f0fu, 0x404779a4u, 0x5d886e17u, 207 0x325f51ebu, 0xd59bc0d1u, 0xf2bcc18fu, 0x41113564u, 208 0x257b7834u, 0x602a9c60u, 0xdff8e8a3u, 0x1f636c1bu, 209 0x0e12b4c2u, 0x02e1329eu, 0xaf664fd1u, 0xcad18115u, 210 0x6b2395e0u, 0x333e92e1u, 0x3b240b62u, 0xeebeb922u, 211 0x85b2a20eu, 0xe6ba0d99u, 0xde720c8cu, 0x2da2f728u, 212 0xd0127845u, 0x95b794fdu, 0x647d0862u, 0xe7ccf5f0u, 213 0x5449a36fu, 0x877d48fau, 0xc39dfd27u, 0xf33e8d1eu, 214 0x0a476341u, 0x992eff74u, 0x3a6f6eabu, 0xf4f8fd37u, 215 0xa812dc60u, 0xa1ebddf8u, 0x991be14cu, 0xdb6e6b0du, 216 0xc67b5510u, 0x6d672c37u, 0x2765d43bu, 0xdcd0e804u, 217 0xf1290dc7u, 0xcc00ffa3u, 0xb5390f92u, 0x690fed0bu, 218 0x667b9ffbu, 0xcedb7d9cu, 0xa091cf0bu, 0xd9155ea3u, 219 0xbb132f88u, 0x515bad24u, 0x7b9479bfu, 0x763bd6ebu, 220 0x37392eb3u, 0xcc115979u, 0x8026e297u, 0xf42e312du, 221 0x6842ada7u, 0xc66a2b3bu, 0x12754cccu, 0x782ef11cu, 222 0x6a124237u, 0xb79251e7u, 0x06a1bbe6u, 0x4bfb6350u, 223 0x1a6b1018u, 0x11caedfau, 0x3d25bdd8u, 0xe2e1c3c9u, 224 0x44421659u, 0x0a121386u, 0xd90cec6eu, 0xd5abea2au, 225 0x64af674eu, 0xda86a85fu, 0xbebfe988u, 0x64e4c3feu, 226 0x9dbc8057u, 0xf0f7c086u, 0x60787bf8u, 0x6003604du, 227 0xd1fd8346u, 0xf6381fb0u, 0x7745ae04u, 0xd736fcccu, 228 0x83426b33u, 0xf01eab71u, 0xb0804187u, 0x3c005e5fu, 229 0x77a057beu, 0xbde8ae24u, 0x55464299u, 0xbf582e61u, 230 0x4e58f48fu, 0xf2ddfda2u, 0xf474ef38u, 0x8789bdc2u, 231 0x5366f9c3u, 0xc8b38e74u, 0xb475f255u, 0x46fcd9b9u, 232 0x7aeb2661u, 0x8b1ddf84u, 0x846a0e79u, 0x915f95e2u, 233 0x466e598eu, 0x20b45770u, 0x8cd55591u, 0xc902de4cu, 234 0xb90bace1u, 0xbb8205d0u, 0x11a86248u, 0x7574a99eu, 235 0xb77f19b6u, 0xe0a9dc09u, 0x662d09a1u, 0xc4324633u, 236 0xe85a1f02u, 0x09f0be8cu, 0x4a99a025u, 0x1d6efe10u, 237 0x1ab93d1du, 0x0ba5a4dfu, 0xa186f20fu, 0x2868f169u, 238 0xdcb7da83u, 0x573906feu, 0xa1e2ce9bu, 0x4fcd7f52u, 239 0x50115e01u, 0xa70683fau, 0xa002b5c4u, 0x0de6d027u, 240 0x9af88c27u, 0x773f8641u, 0xc3604c06u, 0x61a806b5u, 241 0xf0177a28u, 0xc0f586e0u, 0x006058aau, 0x30dc7d62u, 242 0x11e69ed7u, 0x2338ea63u, 0x53c2dd94u, 0xc2c21634u, 243 0xbbcbee56u, 0x90bcb6deu, 0xebfc7da1u, 0xce591d76u, 244 0x6f05e409u, 0x4b7c0188u, 0x39720a3du, 0x7c927c24u, 245 0x86e3725fu, 0x724d9db9u, 0x1ac15bb4u, 0xd39eb8fcu, 246 0xed545578u, 0x08fca5b5u, 0xd83d7cd3u, 0x4dad0fc4u, 247 0x1e50ef5eu, 0xb161e6f8u, 0xa28514d9u, 0x6c51133cu, 248 0x6fd5c7e7u, 0x56e14ec4u, 0x362abfceu, 0xddc6c837u, 249 0xd79a3234u, 0x92638212u, 0x670efa8eu, 0x406000e0u}, 250 {0x3a39ce37u, 0xd3faf5cfu, 0xabc27737u, 0x5ac52d1bu, 251 0x5cb0679eu, 0x4fa33742u, 0xd3822740u, 0x99bc9bbeu, 252 0xd5118e9du, 0xbf0f7315u, 0xd62d1c7eu, 0xc700c47bu, 253 0xb78c1b6bu, 0x21a19045u, 0xb26eb1beu, 0x6a366eb4u, 254 0x5748ab2fu, 0xbc946e79u, 0xc6a376d2u, 0x6549c2c8u, 255 0x530ff8eeu, 0x468dde7du, 0xd5730a1du, 0x4cd04dc6u, 256 0x2939bbdbu, 0xa9ba4650u, 0xac9526e8u, 0xbe5ee304u, 257 0xa1fad5f0u, 0x6a2d519au, 0x63ef8ce2u, 0x9a86ee22u, 258 0xc089c2b8u, 0x43242ef6u, 0xa51e03aau, 0x9cf2d0a4u, 259 0x83c061bau, 0x9be96a4du, 0x8fe51550u, 0xba645bd6u, 260 0x2826a2f9u, 0xa73a3ae1u, 0x4ba99586u, 0xef5562e9u, 261 0xc72fefd3u, 0xf752f7dau, 0x3f046f69u, 0x77fa0a59u, 262 0x80e4a915u, 0x87b08601u, 0x9b09e6adu, 0x3b3ee593u, 263 0xe990fd5au, 0x9e34d797u, 0x2cf0b7d9u, 0x022b8b51u, 264 0x96d5ac3au, 0x017da67du, 0xd1cf3ed6u, 0x7c7d2d28u, 265 0x1f9f25cfu, 0xadf2b89bu, 0x5ad6b472u, 0x5a88f54cu, 266 0xe029ac71u, 0xe019a5e6u, 0x47b0acfdu, 0xed93fa9bu, 267 0xe8d3c48du, 0x283b57ccu, 0xf8d56629u, 0x79132e28u, 268 0x785f0191u, 0xed756055u, 0xf7960e44u, 0xe3d35e8cu, 269 0x15056dd4u, 0x88f46dbau, 0x03a16125u, 0x0564f0bdu, 270 0xc3eb9e15u, 0x3c9057a2u, 0x97271aecu, 0xa93a072au, 271 0x1b3f6d9bu, 0x1e6321f5u, 0xf59c66fbu, 0x26dcf319u, 272 0x7533d928u, 0xb155fdf5u, 0x03563482u, 0x8aba3cbbu, 273 0x28517711u, 0xc20ad9f8u, 0xabcc5167u, 0xccad925fu, 274 0x4de81751u, 0x3830dc8eu, 0x379d5862u, 0x9320f991u, 275 0xea7a90c2u, 0xfb3e7bceu, 0x5121ce64u, 0x774fbe32u, 276 0xa8b6e37eu, 0xc3293d46u, 0x48de5369u, 0x6413e680u, 277 0xa2ae0810u, 0xdd6db224u, 0x69852dfdu, 0x09072166u, 278 0xb39a460au, 0x6445c0ddu, 0x586cdecfu, 0x1c20c8aeu, 279 0x5bbef7ddu, 0x1b588d40u, 0xccd2017fu, 0x6bb4e3bbu, 280 0xdda26a7eu, 0x3a59ff45u, 0x3e350a44u, 0xbcb4cdd5u, 281 0x72eacea8u, 0xfa6484bbu, 0x8d6612aeu, 0xbf3c6f47u, 282 0xd29be463u, 0x542f5d9eu, 0xaec2771bu, 0xf64e6370u, 283 0x740e0d8du, 0xe75b1357u, 0xf8721671u, 0xaf537d5du, 284 0x4040cb08u, 0x4eb4e2ccu, 0x34d2466au, 0x0115af84u, 285 0xe1b00428u, 0x95983a1du, 0x06b89fb4u, 0xce6ea048u, 286 0x6f3f3b82u, 0x3520ab82u, 0x011a1d4bu, 0x277227f8u, 287 0x611560b1u, 0xe7933fdcu, 0xbb3a792bu, 0x344525bdu, 288 0xa08839e1u, 0x51ce794bu, 0x2f32c9b7u, 0xa01fbac9u, 289 0xe01cc87eu, 0xbcc7d1f6u, 0xcf0111c3u, 0xa1e8aac7u, 290 0x1a908749u, 0xd44fbd9au, 0xd0dadecbu, 0xd50ada38u, 291 0x0339c32au, 0xc6913667u, 0x8df9317cu, 0xe0b12b4fu, 292 0xf79e59b7u, 0x43f5bb3au, 0xf2d519ffu, 0x27d9459cu, 293 0xbf97222cu, 0x15e6fc2au, 0x0f91fc71u, 0x9b941525u, 294 0xfae59361u, 0xceb69cebu, 0xc2a86459u, 0x12baa8d1u, 295 0xb6c1075eu, 0xe3056a0cu, 0x10d25065u, 0xcb03a442u, 296 0xe0ec6e0eu, 0x1698db3bu, 0x4c98a0beu, 0x3278e964u, 297 0x9f1f9532u, 0xe0d392dfu, 0xd3a0342bu, 0x8971f21eu, 298 0x1b0a7441u, 0x4ba3348cu, 0xc5be7120u, 0xc37632d8u, 299 0xdf359f8du, 0x9b992f2eu, 0xe60b6f47u, 0x0fe3f11du, 300 0xe54cda54u, 0x1edad891u, 0xce6279cfu, 0xcd3e7e6fu, 301 0x1618b166u, 0xfd2c1d05u, 0x848fd2c5u, 0xf6fb2299u, 302 0xf523f357u, 0xa6327623u, 0x93a83531u, 0x56cccd02u, 303 0xacf08162u, 0x5a75ebb5u, 0x6e163697u, 0x88d273ccu, 304 0xde966292u, 0x81b949d0u, 0x4c50901bu, 0x71c65614u, 305 0xe6c6c7bdu, 0x327a140au, 0x45e1d006u, 0xc3f27b9au, 306 0xc9aa53fdu, 0x62a80f00u, 0xbb25bfe2u, 0x35bdd2f6u, 307 0x71126905u, 0xb2040222u, 0xb6cbcf7cu, 0xcd769c2bu, 308 0x53113ec0u, 0x1640e3d3u, 0x38abbd60u, 0x2547adf0u, 309 0xba38209cu, 0xf746ce76u, 0x77afa1c5u, 0x20756060u, 310 0x85cbfe4eu, 0x8ae88dd8u, 0x7aaaf9b0u, 0x4cf9aa7eu, 311 0x1948c25cu, 0x02fb8a8cu, 0x01c36ae4u, 0xd6ebe1f9u, 312 0x90d4f869u, 0xa65cdea0u, 0x3f09252du, 0xc208e69fu, 313 0xb74e6132u, 0xce77e25bu, 0x578fdfe3u, 0x3ac372e6u 314 } 315 }; 316 317 318 #define F1(i) \ 319 xl ^= pax[i]; \ 320 xr ^= ((sbx[0][xl >> 24] + \ 321 sbx[1][(xl & 0xFF0000) >> 16]) ^ \ 322 sbx[2][(xl & 0xFF00) >> 8]) + \ 323 sbx[3][xl & 0xFF]; 324 325 #define F2(i) \ 326 xr ^= pax[i]; \ 327 xl ^= ((sbx[0][xr >> 24] + \ 328 sbx[1][(xr & 0xFF0000) >> 16]) ^ \ 329 sbx[2][(xr & 0xFF00) >> 8]) + \ 330 sbx[3][xr & 0xFF]; 331 332 333 static void 334 bf_e_block(p_xl, p_xr) 335 UINT32_T *p_xl; 336 UINT32_T *p_xr; 337 { 338 UINT32_T temp, xl = *p_xl, xr = *p_xr; 339 340 F1(0) F2(1) F1(2) F2(3) F1(4) F2(5) F1(6) F2(7) 341 F1(8) F2(9) F1(10) F2(11) F1(12) F2(13) F1(14) F2(15) 342 xl ^= pax[16]; 343 xr ^= pax[17]; 344 temp = xl; 345 xl = xr; 346 xr = temp; 347 *p_xl = xl; 348 *p_xr = xr; 349 } 350 351 #if 0 /* not used */ 352 static void 353 bf_d_block(p_xl, p_xr) 354 UINT32_T *p_xl; 355 UINT32_T *p_xr; 356 { 357 UINT32_T temp, xl = *p_xl, xr = *p_xr; 358 F1(17) F2(16) F1(15) F2(14) F1(13) F2(12) F1(11) F2(10) 359 F1(9) F2(8) F1(7) F2(6) F1(5) F2(4) F1(3) F2(2) 360 xl ^= pax[1]; 361 xr ^= pax[0]; 362 temp = xl; xl = xr; xr = temp; 363 *p_xl = xl; *p_xr = xr; 364 } 365 #endif 366 367 368 #ifdef WORDS_BIGENDIAN 369 # define htonl2(x) \ 370 x = ((((x) & 0xffL) << 24) | (((x) & 0xff00L) << 8) | \ 371 (((x) & 0xff0000L) >> 8) | (((x) & 0xff000000L) >> 24)) 372 #else 373 # define htonl2(x) 374 #endif 375 376 static void 377 bf_e_cblock(block) 378 char_u *block; 379 { 380 block8 bk; 381 382 memcpy(bk.uc, block, 8); 383 htonl2(bk.ul[0]); 384 htonl2(bk.ul[1]); 385 bf_e_block(&bk.ul[0], &bk.ul[1]); 386 htonl2(bk.ul[0]); 387 htonl2(bk.ul[1]); 388 memcpy(block, bk.uc, 8); 389 } 390 391 #if 0 /* not used */ 392 void 393 bf_d_cblock(block) 394 char_u *block; 395 { 396 block8 bk; 397 memcpy(bk.uc, block, 8); 398 htonl2(bk.ul[0]); htonl2(bk.ul[1]); 399 bf_d_block(&bk.ul[0], &bk.ul[1]); 400 htonl2(bk.ul[0]); htonl2(bk.ul[1]); 401 memcpy(block, bk.uc, 8); 402 } 403 #endif 404 405 void 406 bf_key_init(password) 407 char_u *password; 408 { 409 int i, j, keypos = 0; 410 UINT32_T val, data_l, data_r; 411 char_u *key; 412 int keylen; 413 414 key = sha256_key(password); 415 keylen = (int)STRLEN(key); 416 for (i = 0; i < 256; ++i) 417 { 418 sbx[0][i] = sbi[0][i]; 419 sbx[1][i] = sbi[1][i]; 420 sbx[2][i] = sbi[2][i]; 421 sbx[3][i] = sbi[3][i]; 422 } 423 424 for (i = 0; i < 18; ++i) 425 { 426 val = 0; 427 for (j = 0; j < 4; ++j) 428 val = (val << 8) | key[keypos++ % keylen]; 429 pax[i] = ipa[i] ^ val; 430 } 431 432 data_l = data_r = 0; 433 for (i = 0; i < 18; i += 2) 434 { 435 bf_e_block(&data_l, &data_r); 436 pax[i + 0] = data_l; 437 pax[i + 1] = data_r; 438 } 439 440 for (i = 0; i < 4; ++i) 441 { 442 for (j = 0; j < 256; j += 2) 443 { 444 bf_e_block(&data_l, &data_r); 445 sbx[i][j + 0] = data_l; 446 sbx[i][j + 1] = data_r; 447 } 448 } 449 } 450 451 /* 452 * BF Self test for corrupted tables or instructions 453 */ 454 static int 455 bf_check_tables(ipa, sbi, val) 456 UINT32_T ipa[18]; 457 UINT32_T sbi[4][256]; 458 UINT32_T val; 459 { 460 int i, j; 461 UINT32_T c = 0; 462 463 for (i = 0; i < 18; i++) 464 c ^= ipa[i]; 465 for (i = 0; i < 4; i++) 466 for (j = 0; j < 256; j++) 467 c ^= sbi[i][j]; 468 return c == val; 469 } 470 471 typedef struct { 472 char_u password[64]; 473 char_u plaintxt[8]; 474 char_u cryptxt[8]; 475 char_u badcryptxt[8]; /* cryptxt when big/little endian is wrong */ 476 UINT32_T keysum; 477 } struct_bf_test_data; 478 479 /* 480 * Assert bf(password, plaintxt) is cryptxt. 481 * Assert csum(pax sbx(password)) is keysum. 482 */ 483 static struct_bf_test_data bf_test_data[] = { 484 { 485 "password", 486 "plaintxt", 487 "\x55\xca\x56\x3a\xef\xe1\x9c\x73", /* cryptxt */ 488 "\x47\xd9\x67\x49\x91\xc5\x9a\x95", /* badcryptxt */ 489 0x5de01bdbu, /* keysum */ 490 }, 491 }; 492 493 /* 494 * Return FAIL when there is something wrong with blowfish encryption. 495 */ 496 static int 497 bf_self_test() 498 { 499 int i, bn; 500 int err = 0; 501 block8 bk; 502 UINT32_T ui = 0xffffffffUL; 503 504 /* We can't simply use sizeof(UINT32_T), it would generate a compiler 505 * warning. */ 506 if (ui != 0xffffffffUL || ui + 1 != 0) { 507 err++; 508 EMSG(_("E820: sizeof(uint32_t) != 4")); 509 } 510 511 if (!bf_check_tables(ipa, sbi, 0x6ffa520a)) 512 err++; 513 514 bn = ARRAY_LENGTH(bf_test_data); 515 for (i = 0; i < bn; i++) 516 { 517 bf_key_init((char_u *)(bf_test_data[i].password)); 518 if (!bf_check_tables(pax, sbx, bf_test_data[i].keysum)) 519 err++; 520 521 /* Don't modify bf_test_data[i].plaintxt, self test is idempotent. */ 522 memcpy(bk.uc, bf_test_data[i].plaintxt, 8); 523 bf_e_cblock(bk.uc); 524 if (memcmp(bk.uc, bf_test_data[i].cryptxt, 8) != 0) 525 { 526 if (err == 0 && memcmp(bk.uc, bf_test_data[i].badcryptxt, 8) == 0) 527 EMSG(_("E817: Blowfish big/little endian use wrong")); 528 err++; 529 } 530 } 531 532 return err > 0 ? FAIL : OK; 533 } 534 535 /* Output feedback mode. */ 536 static int randbyte_offset = 0; 537 static int update_offset = 0; 538 static char_u ofb_buffer[BF_OFB_LEN]; /* 64 bytes */ 539 540 /* 541 * Initialize with seed "iv[iv_len]". 542 */ 543 void 544 bf_ofb_init(iv, iv_len) 545 char_u *iv; 546 int iv_len; 547 { 548 int i, mi; 549 550 randbyte_offset = update_offset = 0; 551 vim_memset(ofb_buffer, 0, BF_OFB_LEN); 552 if (iv_len > 0) 553 { 554 mi = iv_len > BF_OFB_LEN ? iv_len : BF_OFB_LEN; 555 for (i = 0; i < mi; i++) 556 ofb_buffer[i % BF_OFB_LEN] ^= iv[i % iv_len]; 557 } 558 } 559 560 #define BF_OFB_UPDATE(c) { \ 561 ofb_buffer[update_offset] ^= (char_u)c; \ 562 if (++update_offset == BF_OFB_LEN) \ 563 update_offset = 0; \ 564 } 565 566 #define BF_RANBYTE(t) { \ 567 if ((randbyte_offset & BF_BLOCK_MASK) == 0) \ 568 bf_e_cblock(&ofb_buffer[randbyte_offset]); \ 569 t = ofb_buffer[randbyte_offset]; \ 570 if (++randbyte_offset == BF_OFB_LEN) \ 571 randbyte_offset = 0; \ 572 } 573 574 /* 575 * Encrypt "from[len]" into "to[len]". 576 * "from" and "to" can be equal to encrypt in place. 577 */ 578 void 579 bf_crypt_encode(from, len, to) 580 char_u *from; 581 size_t len; 582 char_u *to; 583 { 584 size_t i; 585 int ztemp, t; 586 587 for (i = 0; i < len; ++i) 588 { 589 ztemp = from[i]; 590 BF_RANBYTE(t); 591 BF_OFB_UPDATE(ztemp); 592 to[i] = t ^ ztemp; 593 } 594 } 595 596 /* 597 * Decrypt "ptr[len]" in place. 598 */ 599 void 600 bf_crypt_decode(ptr, len) 601 char_u *ptr; 602 long len; 603 { 604 char_u *p; 605 int t; 606 607 for (p = ptr; p < ptr + len; ++p) 608 { 609 BF_RANBYTE(t); 610 *p ^= t; 611 BF_OFB_UPDATE(*p); 612 } 613 } 614 615 /* 616 * Initialize the encryption keys and the random header according to 617 * the given password. 618 */ 619 void 620 bf_crypt_init_keys(passwd) 621 char_u *passwd; /* password string with which to modify keys */ 622 { 623 char_u *p; 624 625 for (p = passwd; *p != NUL; ++p) 626 { 627 BF_OFB_UPDATE(*p); 628 } 629 } 630 631 /* 632 * Run a test to check if the encryption works as expected. 633 * Give an error and return FAIL when not. 634 */ 635 int 636 blowfish_self_test() 637 { 638 if (sha256_self_test() == FAIL) 639 { 640 EMSG(_("E818: sha256 test failed")); 641 return FAIL; 642 } 643 if (bf_self_test() == FAIL) 644 { 645 EMSG(_("E819: Blowfish test failed")); 646 return FAIL; 647 } 648 return OK; 649 } 650 651 #endif /* FEAT_CRYPT */ 652