1 /* SHA512 module */ 2 3 /* This module provides an interface to NIST's SHA-512 and SHA-384 Algorithms */ 4 5 /* See below for information about the original code this module was 6 based upon. Additional work performed by: 7 8 Andrew Kuchling (amk (at) amk.ca) 9 Greg Stein (gstein (at) lyra.org) 10 Trevor Perrin (trevp (at) trevp.net) 11 12 Copyright (C) 2005 Gregory P. Smith (greg (at) krypto.org) 13 Licensed to PSF under a Contributor Agreement. 14 15 */ 16 17 /* SHA objects */ 18 19 #include "Python.h" 20 #include "structmember.h" 21 22 #ifdef PY_LONG_LONG /* If no PY_LONG_LONG, don't compile anything! */ 23 24 /* Endianness testing and definitions */ 25 #define TestEndianness(variable) {int i=1; variable=PCT_BIG_ENDIAN;\ 26 if (*((char*)&i)==1) variable=PCT_LITTLE_ENDIAN;} 27 28 #define PCT_LITTLE_ENDIAN 1 29 #define PCT_BIG_ENDIAN 0 30 31 /* Some useful types */ 32 33 typedef unsigned char SHA_BYTE; 34 35 #if SIZEOF_INT == 4 36 typedef unsigned int SHA_INT32; /* 32-bit integer */ 37 typedef unsigned PY_LONG_LONG SHA_INT64; /* 64-bit integer */ 38 #else 39 /* not defined. compilation will die. */ 40 #endif 41 42 /* The SHA block size and message digest sizes, in bytes */ 43 44 #define SHA_BLOCKSIZE 128 45 #define SHA_DIGESTSIZE 64 46 47 /* The structure for storing SHA info */ 48 49 typedef struct { 50 PyObject_HEAD 51 SHA_INT64 digest[8]; /* Message digest */ 52 SHA_INT32 count_lo, count_hi; /* 64-bit bit count */ 53 SHA_BYTE data[SHA_BLOCKSIZE]; /* SHA data buffer */ 54 int Endianness; 55 int local; /* unprocessed amount in data */ 56 int digestsize; 57 } SHAobject; 58 59 /* When run on a little-endian CPU we need to perform byte reversal on an 60 array of longwords. */ 61 62 static void longReverse(SHA_INT64 *buffer, int byteCount, int Endianness) 63 { 64 SHA_INT64 value; 65 66 if ( Endianness == PCT_BIG_ENDIAN ) 67 return; 68 69 byteCount /= sizeof(*buffer); 70 while (byteCount--) { 71 value = *buffer; 72 73 ((unsigned char*)buffer)[0] = (unsigned char)(value >> 56) & 0xff; 74 ((unsigned char*)buffer)[1] = (unsigned char)(value >> 48) & 0xff; 75 ((unsigned char*)buffer)[2] = (unsigned char)(value >> 40) & 0xff; 76 ((unsigned char*)buffer)[3] = (unsigned char)(value >> 32) & 0xff; 77 ((unsigned char*)buffer)[4] = (unsigned char)(value >> 24) & 0xff; 78 ((unsigned char*)buffer)[5] = (unsigned char)(value >> 16) & 0xff; 79 ((unsigned char*)buffer)[6] = (unsigned char)(value >> 8) & 0xff; 80 ((unsigned char*)buffer)[7] = (unsigned char)(value ) & 0xff; 81 82 buffer++; 83 } 84 } 85 86 static void SHAcopy(SHAobject *src, SHAobject *dest) 87 { 88 dest->Endianness = src->Endianness; 89 dest->local = src->local; 90 dest->digestsize = src->digestsize; 91 dest->count_lo = src->count_lo; 92 dest->count_hi = src->count_hi; 93 memcpy(dest->digest, src->digest, sizeof(src->digest)); 94 memcpy(dest->data, src->data, sizeof(src->data)); 95 } 96 97 98 /* ------------------------------------------------------------------------ 99 * 100 * This code for the SHA-512 algorithm was noted as public domain. The 101 * original headers are pasted below. 102 * 103 * Several changes have been made to make it more compatible with the 104 * Python environment and desired interface. 105 * 106 */ 107 108 /* LibTomCrypt, modular cryptographic library -- Tom St Denis 109 * 110 * LibTomCrypt is a library that provides various cryptographic 111 * algorithms in a highly modular and flexible manner. 112 * 113 * The library is free for all purposes without any express 114 * guarantee it works. 115 * 116 * Tom St Denis, tomstdenis (at) iahu.ca, http://libtomcrypt.org 117 */ 118 119 120 /* SHA512 by Tom St Denis */ 121 122 /* Various logical functions */ 123 #define ROR64(x, y) \ 124 ( ((((x) & Py_ULL(0xFFFFFFFFFFFFFFFF))>>((unsigned PY_LONG_LONG)(y) & 63)) | \ 125 ((x)<<((unsigned PY_LONG_LONG)(64-((y) & 63))))) & Py_ULL(0xFFFFFFFFFFFFFFFF)) 126 #define Ch(x,y,z) (z ^ (x & (y ^ z))) 127 #define Maj(x,y,z) (((x | y) & z) | (x & y)) 128 #define S(x, n) ROR64((x),(n)) 129 #define R(x, n) (((x) & Py_ULL(0xFFFFFFFFFFFFFFFF)) >> ((unsigned PY_LONG_LONG)n)) 130 #define Sigma0(x) (S(x, 28) ^ S(x, 34) ^ S(x, 39)) 131 #define Sigma1(x) (S(x, 14) ^ S(x, 18) ^ S(x, 41)) 132 #define Gamma0(x) (S(x, 1) ^ S(x, 8) ^ R(x, 7)) 133 #define Gamma1(x) (S(x, 19) ^ S(x, 61) ^ R(x, 6)) 134 135 136 static void 137 sha512_transform(SHAobject *sha_info) 138 { 139 int i; 140 SHA_INT64 S[8], W[80], t0, t1; 141 142 memcpy(W, sha_info->data, sizeof(sha_info->data)); 143 longReverse(W, (int)sizeof(sha_info->data), sha_info->Endianness); 144 145 for (i = 16; i < 80; ++i) { 146 W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16]; 147 } 148 for (i = 0; i < 8; ++i) { 149 S[i] = sha_info->digest[i]; 150 } 151 152 /* Compress */ 153 #define RND(a,b,c,d,e,f,g,h,i,ki) \ 154 t0 = h + Sigma1(e) + Ch(e, f, g) + ki + W[i]; \ 155 t1 = Sigma0(a) + Maj(a, b, c); \ 156 d += t0; \ 157 h = t0 + t1; 158 159 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],0,Py_ULL(0x428a2f98d728ae22)); 160 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],1,Py_ULL(0x7137449123ef65cd)); 161 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],2,Py_ULL(0xb5c0fbcfec4d3b2f)); 162 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],3,Py_ULL(0xe9b5dba58189dbbc)); 163 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],4,Py_ULL(0x3956c25bf348b538)); 164 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],5,Py_ULL(0x59f111f1b605d019)); 165 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],6,Py_ULL(0x923f82a4af194f9b)); 166 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],7,Py_ULL(0xab1c5ed5da6d8118)); 167 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],8,Py_ULL(0xd807aa98a3030242)); 168 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],9,Py_ULL(0x12835b0145706fbe)); 169 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],10,Py_ULL(0x243185be4ee4b28c)); 170 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],11,Py_ULL(0x550c7dc3d5ffb4e2)); 171 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],12,Py_ULL(0x72be5d74f27b896f)); 172 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],13,Py_ULL(0x80deb1fe3b1696b1)); 173 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],14,Py_ULL(0x9bdc06a725c71235)); 174 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],15,Py_ULL(0xc19bf174cf692694)); 175 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],16,Py_ULL(0xe49b69c19ef14ad2)); 176 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],17,Py_ULL(0xefbe4786384f25e3)); 177 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],18,Py_ULL(0x0fc19dc68b8cd5b5)); 178 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],19,Py_ULL(0x240ca1cc77ac9c65)); 179 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],20,Py_ULL(0x2de92c6f592b0275)); 180 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],21,Py_ULL(0x4a7484aa6ea6e483)); 181 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],22,Py_ULL(0x5cb0a9dcbd41fbd4)); 182 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],23,Py_ULL(0x76f988da831153b5)); 183 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],24,Py_ULL(0x983e5152ee66dfab)); 184 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],25,Py_ULL(0xa831c66d2db43210)); 185 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],26,Py_ULL(0xb00327c898fb213f)); 186 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],27,Py_ULL(0xbf597fc7beef0ee4)); 187 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],28,Py_ULL(0xc6e00bf33da88fc2)); 188 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],29,Py_ULL(0xd5a79147930aa725)); 189 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],30,Py_ULL(0x06ca6351e003826f)); 190 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],31,Py_ULL(0x142929670a0e6e70)); 191 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],32,Py_ULL(0x27b70a8546d22ffc)); 192 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],33,Py_ULL(0x2e1b21385c26c926)); 193 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],34,Py_ULL(0x4d2c6dfc5ac42aed)); 194 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],35,Py_ULL(0x53380d139d95b3df)); 195 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],36,Py_ULL(0x650a73548baf63de)); 196 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],37,Py_ULL(0x766a0abb3c77b2a8)); 197 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],38,Py_ULL(0x81c2c92e47edaee6)); 198 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],39,Py_ULL(0x92722c851482353b)); 199 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],40,Py_ULL(0xa2bfe8a14cf10364)); 200 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],41,Py_ULL(0xa81a664bbc423001)); 201 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],42,Py_ULL(0xc24b8b70d0f89791)); 202 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],43,Py_ULL(0xc76c51a30654be30)); 203 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],44,Py_ULL(0xd192e819d6ef5218)); 204 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],45,Py_ULL(0xd69906245565a910)); 205 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],46,Py_ULL(0xf40e35855771202a)); 206 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],47,Py_ULL(0x106aa07032bbd1b8)); 207 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],48,Py_ULL(0x19a4c116b8d2d0c8)); 208 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],49,Py_ULL(0x1e376c085141ab53)); 209 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],50,Py_ULL(0x2748774cdf8eeb99)); 210 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],51,Py_ULL(0x34b0bcb5e19b48a8)); 211 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],52,Py_ULL(0x391c0cb3c5c95a63)); 212 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],53,Py_ULL(0x4ed8aa4ae3418acb)); 213 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],54,Py_ULL(0x5b9cca4f7763e373)); 214 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],55,Py_ULL(0x682e6ff3d6b2b8a3)); 215 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],56,Py_ULL(0x748f82ee5defb2fc)); 216 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],57,Py_ULL(0x78a5636f43172f60)); 217 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],58,Py_ULL(0x84c87814a1f0ab72)); 218 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],59,Py_ULL(0x8cc702081a6439ec)); 219 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],60,Py_ULL(0x90befffa23631e28)); 220 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],61,Py_ULL(0xa4506cebde82bde9)); 221 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],62,Py_ULL(0xbef9a3f7b2c67915)); 222 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],63,Py_ULL(0xc67178f2e372532b)); 223 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],64,Py_ULL(0xca273eceea26619c)); 224 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],65,Py_ULL(0xd186b8c721c0c207)); 225 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],66,Py_ULL(0xeada7dd6cde0eb1e)); 226 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],67,Py_ULL(0xf57d4f7fee6ed178)); 227 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],68,Py_ULL(0x06f067aa72176fba)); 228 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],69,Py_ULL(0x0a637dc5a2c898a6)); 229 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],70,Py_ULL(0x113f9804bef90dae)); 230 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],71,Py_ULL(0x1b710b35131c471b)); 231 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],72,Py_ULL(0x28db77f523047d84)); 232 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],73,Py_ULL(0x32caab7b40c72493)); 233 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],74,Py_ULL(0x3c9ebe0a15c9bebc)); 234 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],75,Py_ULL(0x431d67c49c100d4c)); 235 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],76,Py_ULL(0x4cc5d4becb3e42b6)); 236 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],77,Py_ULL(0x597f299cfc657e2a)); 237 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],78,Py_ULL(0x5fcb6fab3ad6faec)); 238 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],79,Py_ULL(0x6c44198c4a475817)); 239 240 #undef RND 241 242 /* feedback */ 243 for (i = 0; i < 8; i++) { 244 sha_info->digest[i] = sha_info->digest[i] + S[i]; 245 } 246 247 } 248 249 250 251 /* initialize the SHA digest */ 252 253 static void 254 sha512_init(SHAobject *sha_info) 255 { 256 TestEndianness(sha_info->Endianness) 257 sha_info->digest[0] = Py_ULL(0x6a09e667f3bcc908); 258 sha_info->digest[1] = Py_ULL(0xbb67ae8584caa73b); 259 sha_info->digest[2] = Py_ULL(0x3c6ef372fe94f82b); 260 sha_info->digest[3] = Py_ULL(0xa54ff53a5f1d36f1); 261 sha_info->digest[4] = Py_ULL(0x510e527fade682d1); 262 sha_info->digest[5] = Py_ULL(0x9b05688c2b3e6c1f); 263 sha_info->digest[6] = Py_ULL(0x1f83d9abfb41bd6b); 264 sha_info->digest[7] = Py_ULL(0x5be0cd19137e2179); 265 sha_info->count_lo = 0L; 266 sha_info->count_hi = 0L; 267 sha_info->local = 0; 268 sha_info->digestsize = 64; 269 } 270 271 static void 272 sha384_init(SHAobject *sha_info) 273 { 274 TestEndianness(sha_info->Endianness) 275 sha_info->digest[0] = Py_ULL(0xcbbb9d5dc1059ed8); 276 sha_info->digest[1] = Py_ULL(0x629a292a367cd507); 277 sha_info->digest[2] = Py_ULL(0x9159015a3070dd17); 278 sha_info->digest[3] = Py_ULL(0x152fecd8f70e5939); 279 sha_info->digest[4] = Py_ULL(0x67332667ffc00b31); 280 sha_info->digest[5] = Py_ULL(0x8eb44a8768581511); 281 sha_info->digest[6] = Py_ULL(0xdb0c2e0d64f98fa7); 282 sha_info->digest[7] = Py_ULL(0x47b5481dbefa4fa4); 283 sha_info->count_lo = 0L; 284 sha_info->count_hi = 0L; 285 sha_info->local = 0; 286 sha_info->digestsize = 48; 287 } 288 289 290 /* update the SHA digest */ 291 292 static void 293 sha512_update(SHAobject *sha_info, SHA_BYTE *buffer, int count) 294 { 295 int i; 296 SHA_INT32 clo; 297 298 clo = sha_info->count_lo + ((SHA_INT32) count << 3); 299 if (clo < sha_info->count_lo) { 300 ++sha_info->count_hi; 301 } 302 sha_info->count_lo = clo; 303 sha_info->count_hi += (SHA_INT32) count >> 29; 304 if (sha_info->local) { 305 i = SHA_BLOCKSIZE - sha_info->local; 306 if (i > count) { 307 i = count; 308 } 309 memcpy(((SHA_BYTE *) sha_info->data) + sha_info->local, buffer, i); 310 count -= i; 311 buffer += i; 312 sha_info->local += i; 313 if (sha_info->local == SHA_BLOCKSIZE) { 314 sha512_transform(sha_info); 315 } 316 else { 317 return; 318 } 319 } 320 while (count >= SHA_BLOCKSIZE) { 321 memcpy(sha_info->data, buffer, SHA_BLOCKSIZE); 322 buffer += SHA_BLOCKSIZE; 323 count -= SHA_BLOCKSIZE; 324 sha512_transform(sha_info); 325 } 326 memcpy(sha_info->data, buffer, count); 327 sha_info->local = count; 328 } 329 330 /* finish computing the SHA digest */ 331 332 static void 333 sha512_final(unsigned char digest[SHA_DIGESTSIZE], SHAobject *sha_info) 334 { 335 int count; 336 SHA_INT32 lo_bit_count, hi_bit_count; 337 338 lo_bit_count = sha_info->count_lo; 339 hi_bit_count = sha_info->count_hi; 340 count = (int) ((lo_bit_count >> 3) & 0x7f); 341 ((SHA_BYTE *) sha_info->data)[count++] = 0x80; 342 if (count > SHA_BLOCKSIZE - 16) { 343 memset(((SHA_BYTE *) sha_info->data) + count, 0, 344 SHA_BLOCKSIZE - count); 345 sha512_transform(sha_info); 346 memset((SHA_BYTE *) sha_info->data, 0, SHA_BLOCKSIZE - 16); 347 } 348 else { 349 memset(((SHA_BYTE *) sha_info->data) + count, 0, 350 SHA_BLOCKSIZE - 16 - count); 351 } 352 353 /* GJS: note that we add the hi/lo in big-endian. sha512_transform will 354 swap these values into host-order. */ 355 sha_info->data[112] = 0; 356 sha_info->data[113] = 0; 357 sha_info->data[114] = 0; 358 sha_info->data[115] = 0; 359 sha_info->data[116] = 0; 360 sha_info->data[117] = 0; 361 sha_info->data[118] = 0; 362 sha_info->data[119] = 0; 363 sha_info->data[120] = (hi_bit_count >> 24) & 0xff; 364 sha_info->data[121] = (hi_bit_count >> 16) & 0xff; 365 sha_info->data[122] = (hi_bit_count >> 8) & 0xff; 366 sha_info->data[123] = (hi_bit_count >> 0) & 0xff; 367 sha_info->data[124] = (lo_bit_count >> 24) & 0xff; 368 sha_info->data[125] = (lo_bit_count >> 16) & 0xff; 369 sha_info->data[126] = (lo_bit_count >> 8) & 0xff; 370 sha_info->data[127] = (lo_bit_count >> 0) & 0xff; 371 sha512_transform(sha_info); 372 digest[ 0] = (unsigned char) ((sha_info->digest[0] >> 56) & 0xff); 373 digest[ 1] = (unsigned char) ((sha_info->digest[0] >> 48) & 0xff); 374 digest[ 2] = (unsigned char) ((sha_info->digest[0] >> 40) & 0xff); 375 digest[ 3] = (unsigned char) ((sha_info->digest[0] >> 32) & 0xff); 376 digest[ 4] = (unsigned char) ((sha_info->digest[0] >> 24) & 0xff); 377 digest[ 5] = (unsigned char) ((sha_info->digest[0] >> 16) & 0xff); 378 digest[ 6] = (unsigned char) ((sha_info->digest[0] >> 8) & 0xff); 379 digest[ 7] = (unsigned char) ((sha_info->digest[0] ) & 0xff); 380 digest[ 8] = (unsigned char) ((sha_info->digest[1] >> 56) & 0xff); 381 digest[ 9] = (unsigned char) ((sha_info->digest[1] >> 48) & 0xff); 382 digest[10] = (unsigned char) ((sha_info->digest[1] >> 40) & 0xff); 383 digest[11] = (unsigned char) ((sha_info->digest[1] >> 32) & 0xff); 384 digest[12] = (unsigned char) ((sha_info->digest[1] >> 24) & 0xff); 385 digest[13] = (unsigned char) ((sha_info->digest[1] >> 16) & 0xff); 386 digest[14] = (unsigned char) ((sha_info->digest[1] >> 8) & 0xff); 387 digest[15] = (unsigned char) ((sha_info->digest[1] ) & 0xff); 388 digest[16] = (unsigned char) ((sha_info->digest[2] >> 56) & 0xff); 389 digest[17] = (unsigned char) ((sha_info->digest[2] >> 48) & 0xff); 390 digest[18] = (unsigned char) ((sha_info->digest[2] >> 40) & 0xff); 391 digest[19] = (unsigned char) ((sha_info->digest[2] >> 32) & 0xff); 392 digest[20] = (unsigned char) ((sha_info->digest[2] >> 24) & 0xff); 393 digest[21] = (unsigned char) ((sha_info->digest[2] >> 16) & 0xff); 394 digest[22] = (unsigned char) ((sha_info->digest[2] >> 8) & 0xff); 395 digest[23] = (unsigned char) ((sha_info->digest[2] ) & 0xff); 396 digest[24] = (unsigned char) ((sha_info->digest[3] >> 56) & 0xff); 397 digest[25] = (unsigned char) ((sha_info->digest[3] >> 48) & 0xff); 398 digest[26] = (unsigned char) ((sha_info->digest[3] >> 40) & 0xff); 399 digest[27] = (unsigned char) ((sha_info->digest[3] >> 32) & 0xff); 400 digest[28] = (unsigned char) ((sha_info->digest[3] >> 24) & 0xff); 401 digest[29] = (unsigned char) ((sha_info->digest[3] >> 16) & 0xff); 402 digest[30] = (unsigned char) ((sha_info->digest[3] >> 8) & 0xff); 403 digest[31] = (unsigned char) ((sha_info->digest[3] ) & 0xff); 404 digest[32] = (unsigned char) ((sha_info->digest[4] >> 56) & 0xff); 405 digest[33] = (unsigned char) ((sha_info->digest[4] >> 48) & 0xff); 406 digest[34] = (unsigned char) ((sha_info->digest[4] >> 40) & 0xff); 407 digest[35] = (unsigned char) ((sha_info->digest[4] >> 32) & 0xff); 408 digest[36] = (unsigned char) ((sha_info->digest[4] >> 24) & 0xff); 409 digest[37] = (unsigned char) ((sha_info->digest[4] >> 16) & 0xff); 410 digest[38] = (unsigned char) ((sha_info->digest[4] >> 8) & 0xff); 411 digest[39] = (unsigned char) ((sha_info->digest[4] ) & 0xff); 412 digest[40] = (unsigned char) ((sha_info->digest[5] >> 56) & 0xff); 413 digest[41] = (unsigned char) ((sha_info->digest[5] >> 48) & 0xff); 414 digest[42] = (unsigned char) ((sha_info->digest[5] >> 40) & 0xff); 415 digest[43] = (unsigned char) ((sha_info->digest[5] >> 32) & 0xff); 416 digest[44] = (unsigned char) ((sha_info->digest[5] >> 24) & 0xff); 417 digest[45] = (unsigned char) ((sha_info->digest[5] >> 16) & 0xff); 418 digest[46] = (unsigned char) ((sha_info->digest[5] >> 8) & 0xff); 419 digest[47] = (unsigned char) ((sha_info->digest[5] ) & 0xff); 420 digest[48] = (unsigned char) ((sha_info->digest[6] >> 56) & 0xff); 421 digest[49] = (unsigned char) ((sha_info->digest[6] >> 48) & 0xff); 422 digest[50] = (unsigned char) ((sha_info->digest[6] >> 40) & 0xff); 423 digest[51] = (unsigned char) ((sha_info->digest[6] >> 32) & 0xff); 424 digest[52] = (unsigned char) ((sha_info->digest[6] >> 24) & 0xff); 425 digest[53] = (unsigned char) ((sha_info->digest[6] >> 16) & 0xff); 426 digest[54] = (unsigned char) ((sha_info->digest[6] >> 8) & 0xff); 427 digest[55] = (unsigned char) ((sha_info->digest[6] ) & 0xff); 428 digest[56] = (unsigned char) ((sha_info->digest[7] >> 56) & 0xff); 429 digest[57] = (unsigned char) ((sha_info->digest[7] >> 48) & 0xff); 430 digest[58] = (unsigned char) ((sha_info->digest[7] >> 40) & 0xff); 431 digest[59] = (unsigned char) ((sha_info->digest[7] >> 32) & 0xff); 432 digest[60] = (unsigned char) ((sha_info->digest[7] >> 24) & 0xff); 433 digest[61] = (unsigned char) ((sha_info->digest[7] >> 16) & 0xff); 434 digest[62] = (unsigned char) ((sha_info->digest[7] >> 8) & 0xff); 435 digest[63] = (unsigned char) ((sha_info->digest[7] ) & 0xff); 436 } 437 438 /* 439 * End of copied SHA code. 440 * 441 * ------------------------------------------------------------------------ 442 */ 443 444 static PyTypeObject SHA384type; 445 static PyTypeObject SHA512type; 446 447 448 static SHAobject * 449 newSHA384object(void) 450 { 451 return (SHAobject *)PyObject_New(SHAobject, &SHA384type); 452 } 453 454 static SHAobject * 455 newSHA512object(void) 456 { 457 return (SHAobject *)PyObject_New(SHAobject, &SHA512type); 458 } 459 460 /* Internal methods for a hash object */ 461 462 static void 463 SHA512_dealloc(PyObject *ptr) 464 { 465 PyObject_Del(ptr); 466 } 467 468 469 /* External methods for a hash object */ 470 471 PyDoc_STRVAR(SHA512_copy__doc__, "Return a copy of the hash object."); 472 473 static PyObject * 474 SHA512_copy(SHAobject *self, PyObject *unused) 475 { 476 SHAobject *newobj; 477 478 if (((PyObject*)self)->ob_type == &SHA512type) { 479 if ( (newobj = newSHA512object())==NULL) 480 return NULL; 481 } else { 482 if ( (newobj = newSHA384object())==NULL) 483 return NULL; 484 } 485 486 SHAcopy(self, newobj); 487 return (PyObject *)newobj; 488 } 489 490 PyDoc_STRVAR(SHA512_digest__doc__, 491 "Return the digest value as a string of binary data."); 492 493 static PyObject * 494 SHA512_digest(SHAobject *self, PyObject *unused) 495 { 496 unsigned char digest[SHA_DIGESTSIZE]; 497 SHAobject temp; 498 499 SHAcopy(self, &temp); 500 sha512_final(digest, &temp); 501 return PyString_FromStringAndSize((const char *)digest, self->digestsize); 502 } 503 504 PyDoc_STRVAR(SHA512_hexdigest__doc__, 505 "Return the digest value as a string of hexadecimal digits."); 506 507 static PyObject * 508 SHA512_hexdigest(SHAobject *self, PyObject *unused) 509 { 510 unsigned char digest[SHA_DIGESTSIZE]; 511 SHAobject temp; 512 PyObject *retval; 513 char *hex_digest; 514 int i, j; 515 516 /* Get the raw (binary) digest value */ 517 SHAcopy(self, &temp); 518 sha512_final(digest, &temp); 519 520 /* Create a new string */ 521 retval = PyString_FromStringAndSize(NULL, self->digestsize * 2); 522 if (!retval) 523 return NULL; 524 hex_digest = PyString_AsString(retval); 525 if (!hex_digest) { 526 Py_DECREF(retval); 527 return NULL; 528 } 529 530 /* Make hex version of the digest */ 531 for (i=j=0; i<self->digestsize; i++) { 532 char c; 533 c = (digest[i] >> 4) & 0xf; 534 c = (c>9) ? c+'a'-10 : c + '0'; 535 hex_digest[j++] = c; 536 c = (digest[i] & 0xf); 537 c = (c>9) ? c+'a'-10 : c + '0'; 538 hex_digest[j++] = c; 539 } 540 return retval; 541 } 542 543 PyDoc_STRVAR(SHA512_update__doc__, 544 "Update this hash object's state with the provided string."); 545 546 static PyObject * 547 SHA512_update(SHAobject *self, PyObject *args) 548 { 549 Py_buffer buf; 550 551 if (!PyArg_ParseTuple(args, "s*:update", &buf)) 552 return NULL; 553 554 sha512_update(self, buf.buf, buf.len); 555 556 PyBuffer_Release(&buf); 557 Py_RETURN_NONE; 558 } 559 560 static PyMethodDef SHA_methods[] = { 561 {"copy", (PyCFunction)SHA512_copy, METH_NOARGS, SHA512_copy__doc__}, 562 {"digest", (PyCFunction)SHA512_digest, METH_NOARGS, SHA512_digest__doc__}, 563 {"hexdigest", (PyCFunction)SHA512_hexdigest, METH_NOARGS, SHA512_hexdigest__doc__}, 564 {"update", (PyCFunction)SHA512_update, METH_VARARGS, SHA512_update__doc__}, 565 {NULL, NULL} /* sentinel */ 566 }; 567 568 static PyObject * 569 SHA512_get_block_size(PyObject *self, void *closure) 570 { 571 return PyInt_FromLong(SHA_BLOCKSIZE); 572 } 573 574 static PyObject * 575 SHA512_get_name(PyObject *self, void *closure) 576 { 577 if (((SHAobject *)self)->digestsize == 64) 578 return PyString_FromStringAndSize("SHA512", 6); 579 else 580 return PyString_FromStringAndSize("SHA384", 6); 581 } 582 583 static PyGetSetDef SHA_getseters[] = { 584 {"block_size", 585 (getter)SHA512_get_block_size, NULL, 586 NULL, 587 NULL}, 588 {"name", 589 (getter)SHA512_get_name, NULL, 590 NULL, 591 NULL}, 592 {NULL} /* Sentinel */ 593 }; 594 595 static PyMemberDef SHA_members[] = { 596 {"digest_size", T_INT, offsetof(SHAobject, digestsize), READONLY, NULL}, 597 /* the old md5 and sha modules support 'digest_size' as in PEP 247. 598 * the old sha module also supported 'digestsize'. ugh. */ 599 {"digestsize", T_INT, offsetof(SHAobject, digestsize), READONLY, NULL}, 600 {NULL} /* Sentinel */ 601 }; 602 603 static PyTypeObject SHA384type = { 604 PyVarObject_HEAD_INIT(NULL, 0) 605 "_sha512.sha384", /*tp_name*/ 606 sizeof(SHAobject), /*tp_basicsize*/ 607 0, /*tp_itemsize*/ 608 /* methods */ 609 SHA512_dealloc, /*tp_dealloc*/ 610 0, /*tp_print*/ 611 0, /*tp_getattr*/ 612 0, /*tp_setattr*/ 613 0, /*tp_compare*/ 614 0, /*tp_repr*/ 615 0, /*tp_as_number*/ 616 0, /*tp_as_sequence*/ 617 0, /*tp_as_mapping*/ 618 0, /*tp_hash*/ 619 0, /*tp_call*/ 620 0, /*tp_str*/ 621 0, /*tp_getattro*/ 622 0, /*tp_setattro*/ 623 0, /*tp_as_buffer*/ 624 Py_TPFLAGS_DEFAULT, /*tp_flags*/ 625 0, /*tp_doc*/ 626 0, /*tp_traverse*/ 627 0, /*tp_clear*/ 628 0, /*tp_richcompare*/ 629 0, /*tp_weaklistoffset*/ 630 0, /*tp_iter*/ 631 0, /*tp_iternext*/ 632 SHA_methods, /* tp_methods */ 633 SHA_members, /* tp_members */ 634 SHA_getseters, /* tp_getset */ 635 }; 636 637 static PyTypeObject SHA512type = { 638 PyVarObject_HEAD_INIT(NULL, 0) 639 "_sha512.sha512", /*tp_name*/ 640 sizeof(SHAobject), /*tp_basicsize*/ 641 0, /*tp_itemsize*/ 642 /* methods */ 643 SHA512_dealloc, /*tp_dealloc*/ 644 0, /*tp_print*/ 645 0, /*tp_getattr*/ 646 0, /*tp_setattr*/ 647 0, /*tp_compare*/ 648 0, /*tp_repr*/ 649 0, /*tp_as_number*/ 650 0, /*tp_as_sequence*/ 651 0, /*tp_as_mapping*/ 652 0, /*tp_hash*/ 653 0, /*tp_call*/ 654 0, /*tp_str*/ 655 0, /*tp_getattro*/ 656 0, /*tp_setattro*/ 657 0, /*tp_as_buffer*/ 658 Py_TPFLAGS_DEFAULT, /*tp_flags*/ 659 0, /*tp_doc*/ 660 0, /*tp_traverse*/ 661 0, /*tp_clear*/ 662 0, /*tp_richcompare*/ 663 0, /*tp_weaklistoffset*/ 664 0, /*tp_iter*/ 665 0, /*tp_iternext*/ 666 SHA_methods, /* tp_methods */ 667 SHA_members, /* tp_members */ 668 SHA_getseters, /* tp_getset */ 669 }; 670 671 672 /* The single module-level function: new() */ 673 674 PyDoc_STRVAR(SHA512_new__doc__, 675 "Return a new SHA-512 hash object; optionally initialized with a string."); 676 677 static PyObject * 678 SHA512_new(PyObject *self, PyObject *args, PyObject *kwdict) 679 { 680 static char *kwlist[] = {"string", NULL}; 681 SHAobject *new; 682 Py_buffer buf = { 0 }; 683 684 if (!PyArg_ParseTupleAndKeywords(args, kwdict, "|s*:new", kwlist, 685 &buf)) { 686 return NULL; 687 } 688 689 if ((new = newSHA512object()) == NULL) { 690 PyBuffer_Release(&buf); 691 return NULL; 692 } 693 694 sha512_init(new); 695 696 if (PyErr_Occurred()) { 697 Py_DECREF(new); 698 PyBuffer_Release(&buf); 699 return NULL; 700 } 701 if (buf.len > 0) { 702 sha512_update(new, buf.buf, buf.len); 703 } 704 PyBuffer_Release(&buf); 705 706 return (PyObject *)new; 707 } 708 709 PyDoc_STRVAR(SHA384_new__doc__, 710 "Return a new SHA-384 hash object; optionally initialized with a string."); 711 712 static PyObject * 713 SHA384_new(PyObject *self, PyObject *args, PyObject *kwdict) 714 { 715 static char *kwlist[] = {"string", NULL}; 716 SHAobject *new; 717 Py_buffer buf = { 0 }; 718 719 if (!PyArg_ParseTupleAndKeywords(args, kwdict, "|s*:new", kwlist, 720 &buf)) { 721 return NULL; 722 } 723 724 if ((new = newSHA384object()) == NULL) { 725 PyBuffer_Release(&buf); 726 return NULL; 727 } 728 729 sha384_init(new); 730 731 if (PyErr_Occurred()) { 732 Py_DECREF(new); 733 PyBuffer_Release(&buf); 734 return NULL; 735 } 736 if (buf.len > 0) { 737 sha512_update(new, buf.buf, buf.len); 738 } 739 PyBuffer_Release(&buf); 740 741 return (PyObject *)new; 742 } 743 744 745 /* List of functions exported by this module */ 746 747 static struct PyMethodDef SHA_functions[] = { 748 {"sha512", (PyCFunction)SHA512_new, METH_VARARGS|METH_KEYWORDS, SHA512_new__doc__}, 749 {"sha384", (PyCFunction)SHA384_new, METH_VARARGS|METH_KEYWORDS, SHA384_new__doc__}, 750 {NULL, NULL} /* Sentinel */ 751 }; 752 753 754 /* Initialize this module. */ 755 756 #define insint(n,v) { PyModule_AddIntConstant(m,n,v); } 757 758 PyMODINIT_FUNC 759 init_sha512(void) 760 { 761 PyObject *m; 762 763 Py_TYPE(&SHA384type) = &PyType_Type; 764 if (PyType_Ready(&SHA384type) < 0) 765 return; 766 Py_TYPE(&SHA512type) = &PyType_Type; 767 if (PyType_Ready(&SHA512type) < 0) 768 return; 769 m = Py_InitModule("_sha512", SHA_functions); 770 if (m == NULL) 771 return; 772 } 773 774 #endif 775
