Annotation of embedaddon/strongswan/src/libstrongswan/plugins/sha2/sha2_hasher.c, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (C) 2006 Martin Willi
! 3: * HSR Hochschule fuer Technik Rapperswil
! 4: * Copyright (C) 2001 Jari Ruusu.
! 5: *
! 6: * Ported from strongSwans implementation written by Jari Ruusu.
! 7: *
! 8: * This program is free software; you can redistribute it and/or modify it
! 9: * under the terms of the GNU General Public License as published by the
! 10: * Free Software Foundation; either version 2 of the License, or (at your
! 11: * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
! 12: *
! 13: * This program is distributed in the hope that it will be useful, but
! 14: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
! 15: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
! 16: * for more details.
! 17: */
! 18:
! 19: #include <string.h>
! 20:
! 21: #include "sha2_hasher.h"
! 22:
! 23:
! 24: typedef struct private_sha512_hasher_t private_sha512_hasher_t;
! 25:
! 26: /**
! 27: * Private data structure with hashing context for SHA384 and SHA512
! 28: */
! 29: struct private_sha512_hasher_t {
! 30: /**
! 31: * Public interface for this hasher.
! 32: */
! 33: sha2_hasher_t public;
! 34:
! 35: unsigned char sha_out[128]; /* results are here, bytes 0..47/0..63 */
! 36: uint64_t sha_H[8];
! 37: uint64_t sha_blocks;
! 38: uint64_t sha_blocksMSB;
! 39: int sha_bufCnt;
! 40: };
! 41:
! 42:
! 43: typedef struct private_sha256_hasher_t private_sha256_hasher_t;
! 44:
! 45: /**
! 46: * Private data structure with hashing context for SHA256
! 47: */
! 48: struct private_sha256_hasher_t {
! 49: /**
! 50: * Public interface for this hasher.
! 51: */
! 52: sha2_hasher_t public;
! 53:
! 54: unsigned char sha_out[64]; /* results are here, bytes 0...31 */
! 55: uint32_t sha_H[8];
! 56: uint64_t sha_blocks;
! 57: int sha_bufCnt;
! 58: };
! 59:
! 60:
! 61: static const uint32_t sha224_hashInit[8] = {
! 62: 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939, 0xffc00b31, 0x68581511,
! 63: 0x64f98fa7, 0xbefa4fa4
! 64: };
! 65:
! 66: static const uint32_t sha256_hashInit[8] = {
! 67: 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c,
! 68: 0x1f83d9ab, 0x5be0cd19
! 69: };
! 70:
! 71: static const uint32_t sha256_K[64] = {
! 72: 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
! 73: 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
! 74: 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
! 75: 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
! 76: 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
! 77: 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
! 78: 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b,
! 79: 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
! 80: 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,
! 81: 0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
! 82: 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
! 83: };
! 84:
! 85: static const uint64_t sha512_hashInit[8] = {
! 86: 0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL, 0x3c6ef372fe94f82bULL,
! 87: 0xa54ff53a5f1d36f1ULL, 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
! 88: 0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
! 89: };
! 90:
! 91: static const uint64_t sha384_hashInit[8] = {
! 92: 0xcbbb9d5dc1059ed8ULL, 0x629a292a367cd507ULL, 0x9159015a3070dd17ULL,
! 93: 0x152fecd8f70e5939ULL, 0x67332667ffc00b31ULL, 0x8eb44a8768581511ULL,
! 94: 0xdb0c2e0d64f98fa7ULL, 0x47b5481dbefa4fa4ULL
! 95: };
! 96:
! 97: static const uint64_t sha512_K[80] = {
! 98: 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL,
! 99: 0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
! 100: 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL,
! 101: 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
! 102: 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL,
! 103: 0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
! 104: 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL,
! 105: 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
! 106: 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL,
! 107: 0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
! 108: 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL,
! 109: 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
! 110: 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL,
! 111: 0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
! 112: 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL,
! 113: 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
! 114: 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL,
! 115: 0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
! 116: 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL,
! 117: 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
! 118: 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL,
! 119: 0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
! 120: 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL,
! 121: 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
! 122: 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL,
! 123: 0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
! 124: 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
! 125: };
! 126:
! 127:
! 128: /* set macros for SHA256 */
! 129: #define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
! 130: #define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
! 131: #define R(x,y) ((y) >> (x))
! 132:
! 133: #define S(x,y) (((y) >> (x)) | ((y) << (32 - (x))))
! 134: #define uSig0(x) ((S(2,(x))) ^ (S(13,(x))) ^ (S(22,(x))))
! 135: #define uSig1(x) ((S(6,(x))) ^ (S(11,(x))) ^ (S(25,(x))))
! 136: #define lSig0(x) ((S(7,(x))) ^ (S(18,(x))) ^ (R(3,(x))))
! 137: #define lSig1(x) ((S(17,(x))) ^ (S(19,(x))) ^ (R(10,(x))))
! 138:
! 139: /**
! 140: * Single block SHA256 transformation
! 141: */
! 142: static void sha256_transform(private_sha256_hasher_t *ctx,
! 143: const unsigned char *datap)
! 144: {
! 145: register int j;
! 146: uint32_t a, b, c, d, e, f, g, h;
! 147: uint32_t T1, T2, W[64], Wm2, Wm15;
! 148:
! 149: /* read the data, big endian byte order */
! 150: j = 0;
! 151: do {
! 152: W[j] = (((uint32_t)(datap[0]))<<24) | (((uint32_t)(datap[1]))<<16) |
! 153: (((uint32_t)(datap[2]))<<8 ) | ((uint32_t)(datap[3]));
! 154: datap += 4;
! 155: } while(++j < 16);
! 156:
! 157: /* initialize variables a...h */
! 158: a = ctx->sha_H[0];
! 159: b = ctx->sha_H[1];
! 160: c = ctx->sha_H[2];
! 161: d = ctx->sha_H[3];
! 162: e = ctx->sha_H[4];
! 163: f = ctx->sha_H[5];
! 164: g = ctx->sha_H[6];
! 165: h = ctx->sha_H[7];
! 166:
! 167: /* apply compression function */
! 168: j = 0;
! 169: do
! 170: {
! 171: if(j >= 16)
! 172: {
! 173: Wm2 = W[j - 2];
! 174: Wm15 = W[j - 15];
! 175: W[j] = lSig1(Wm2) + W[j - 7] + lSig0(Wm15) + W[j - 16];
! 176: }
! 177: T1 = h + uSig1(e) + Ch(e,f,g) + sha256_K[j] + W[j];
! 178: T2 = uSig0(a) + Maj(a,b,c);
! 179: h = g; g = f; f = e;
! 180: e = d + T1;
! 181: d = c; c = b; b = a;
! 182: a = T1 + T2;
! 183: } while(++j < 64);
! 184:
! 185: /* compute intermediate hash value */
! 186: ctx->sha_H[0] += a;
! 187: ctx->sha_H[1] += b;
! 188: ctx->sha_H[2] += c;
! 189: ctx->sha_H[3] += d;
! 190: ctx->sha_H[4] += e;
! 191: ctx->sha_H[5] += f;
! 192: ctx->sha_H[6] += g;
! 193: ctx->sha_H[7] += h;
! 194:
! 195: ctx->sha_blocks++;
! 196: }
! 197:
! 198: /**
! 199: * Update SHA256 hash
! 200: */
! 201: static void sha256_write(private_sha256_hasher_t *ctx,
! 202: const unsigned char *datap, int length)
! 203: {
! 204: while(length > 0)
! 205: {
! 206: if(!ctx->sha_bufCnt)
! 207: {
! 208: while(length >= sizeof(ctx->sha_out))
! 209: {
! 210: sha256_transform(ctx, datap);
! 211: datap += sizeof(ctx->sha_out);
! 212: length -= sizeof(ctx->sha_out);
! 213: }
! 214: if(!length) return;
! 215: }
! 216: ctx->sha_out[ctx->sha_bufCnt] = *datap++;
! 217: length--;
! 218: if(++ctx->sha_bufCnt == sizeof(ctx->sha_out))
! 219: {
! 220: sha256_transform(ctx, &ctx->sha_out[0]);
! 221: ctx->sha_bufCnt = 0;
! 222: }
! 223: }
! 224: }
! 225:
! 226: /**
! 227: * finalize SHA256 hash
! 228: */
! 229: static void sha256_final(private_sha256_hasher_t *ctx, u_char *buf, size_t len)
! 230: {
! 231: register int j;
! 232: uint64_t bitLength;
! 233: uint32_t i;
! 234: unsigned char padByte, *datap;
! 235:
! 236: bitLength = (ctx->sha_blocks << 9) | (ctx->sha_bufCnt << 3);
! 237: padByte = 0x80;
! 238: sha256_write(ctx, &padByte, 1);
! 239:
! 240: /* pad extra space with zeroes */
! 241: padByte = 0;
! 242: while(ctx->sha_bufCnt != 56)
! 243: {
! 244: sha256_write(ctx, &padByte, 1);
! 245: }
! 246:
! 247: /* write bit length, big endian byte order */
! 248: ctx->sha_out[56] = bitLength >> 56;
! 249: ctx->sha_out[57] = bitLength >> 48;
! 250: ctx->sha_out[58] = bitLength >> 40;
! 251: ctx->sha_out[59] = bitLength >> 32;
! 252: ctx->sha_out[60] = bitLength >> 24;
! 253: ctx->sha_out[61] = bitLength >> 16;
! 254: ctx->sha_out[62] = bitLength >> 8;
! 255: ctx->sha_out[63] = bitLength;
! 256: sha256_transform(ctx, &ctx->sha_out[0]);
! 257:
! 258: datap = buf;
! 259: j = 0;
! 260: do {
! 261: i = ctx->sha_H[j];
! 262: datap[0] = i >> 24;
! 263: datap[1] = i >> 16;
! 264: datap[2] = i >> 8;
! 265: datap[3] = i;
! 266: datap += 4;
! 267: } while(++j < len / 4);
! 268: }
! 269:
! 270: /* update macros for SHA512 */
! 271: #undef S
! 272: #undef uSig0
! 273: #undef uSig1
! 274: #undef lSig0
! 275: #undef lSig1
! 276: #define S(x,y) (((y) >> (x)) | ((y) << (64 - (x))))
! 277: #define uSig0(x) ((S(28,(x))) ^ (S(34,(x))) ^ (S(39,(x))))
! 278: #define uSig1(x) ((S(14,(x))) ^ (S(18,(x))) ^ (S(41,(x))))
! 279: #define lSig0(x) ((S(1,(x))) ^ (S(8,(x))) ^ (R(7,(x))))
! 280: #define lSig1(x) ((S(19,(x))) ^ (S(61,(x))) ^ (R(6,(x))))
! 281:
! 282: /**
! 283: * Single block SHA384/SHA512 transformation
! 284: */
! 285: static void sha512_transform(private_sha512_hasher_t *ctx,
! 286: const unsigned char *datap)
! 287: {
! 288: register int j;
! 289: uint64_t a, b, c, d, e, f, g, h;
! 290: uint64_t T1, T2, W[80], Wm2, Wm15;
! 291:
! 292: /* read the data, big endian byte order */
! 293: j = 0;
! 294: do {
! 295: W[j] = (((uint64_t)(datap[0]))<<56) | (((uint64_t)(datap[1]))<<48) |
! 296: (((uint64_t)(datap[2]))<<40) | (((uint64_t)(datap[3]))<<32) |
! 297: (((uint64_t)(datap[4]))<<24) | (((uint64_t)(datap[5]))<<16) |
! 298: (((uint64_t)(datap[6]))<<8 ) | ((uint64_t)(datap[7]));
! 299: datap += 8;
! 300: } while(++j < 16);
! 301:
! 302: /* initialize variables a...h */
! 303: a = ctx->sha_H[0];
! 304: b = ctx->sha_H[1];
! 305: c = ctx->sha_H[2];
! 306: d = ctx->sha_H[3];
! 307: e = ctx->sha_H[4];
! 308: f = ctx->sha_H[5];
! 309: g = ctx->sha_H[6];
! 310: h = ctx->sha_H[7];
! 311:
! 312: /* apply compression function */
! 313: j = 0;
! 314: do {
! 315: if(j >= 16) {
! 316: Wm2 = W[j - 2];
! 317: Wm15 = W[j - 15];
! 318: W[j] = lSig1(Wm2) + W[j - 7] + lSig0(Wm15) + W[j - 16];
! 319: }
! 320: T1 = h + uSig1(e) + Ch(e,f,g) + sha512_K[j] + W[j];
! 321: T2 = uSig0(a) + Maj(a,b,c);
! 322: h = g; g = f; f = e;
! 323: e = d + T1;
! 324: d = c; c = b; b = a;
! 325: a = T1 + T2;
! 326: } while(++j < 80);
! 327:
! 328: /* compute intermediate hash value */
! 329: ctx->sha_H[0] += a;
! 330: ctx->sha_H[1] += b;
! 331: ctx->sha_H[2] += c;
! 332: ctx->sha_H[3] += d;
! 333: ctx->sha_H[4] += e;
! 334: ctx->sha_H[5] += f;
! 335: ctx->sha_H[6] += g;
! 336: ctx->sha_H[7] += h;
! 337:
! 338: ctx->sha_blocks++;
! 339: if(!ctx->sha_blocks) ctx->sha_blocksMSB++;
! 340: }
! 341:
! 342: /**
! 343: * Update a SHA384/SHA512 hash
! 344: */
! 345: static void sha512_write(private_sha512_hasher_t *ctx,
! 346: const unsigned char *datap, int length)
! 347: {
! 348: while(length > 0)
! 349: {
! 350: if(!ctx->sha_bufCnt)
! 351: {
! 352: while(length >= sizeof(ctx->sha_out))
! 353: {
! 354: sha512_transform(ctx, datap);
! 355: datap += sizeof(ctx->sha_out);
! 356: length -= sizeof(ctx->sha_out);
! 357: }
! 358: if(!length) return;
! 359: }
! 360: ctx->sha_out[ctx->sha_bufCnt] = *datap++;
! 361: length--;
! 362: if(++ctx->sha_bufCnt == sizeof(ctx->sha_out))
! 363: {
! 364: sha512_transform(ctx, &ctx->sha_out[0]);
! 365: ctx->sha_bufCnt = 0;
! 366: }
! 367: }
! 368: }
! 369:
! 370: /**
! 371: * Finalize a SHA384/SHA512 hash
! 372: */
! 373: static void sha512_final(private_sha512_hasher_t *ctx, u_char *buf, size_t len)
! 374: {
! 375: register int j;
! 376: uint64_t bitLength, bitLengthMSB;
! 377: uint64_t i;
! 378: unsigned char padByte, *datap;
! 379:
! 380: bitLength = (ctx->sha_blocks << 10) | (ctx->sha_bufCnt << 3);
! 381: bitLengthMSB = (ctx->sha_blocksMSB << 10) | (ctx->sha_blocks >> 54);
! 382: padByte = 0x80;
! 383: sha512_write(ctx, &padByte, 1);
! 384:
! 385: /* pad extra space with zeroes */
! 386: padByte = 0;
! 387: while(ctx->sha_bufCnt != 112)
! 388: {
! 389: sha512_write(ctx, &padByte, 1);
! 390: }
! 391:
! 392: /* write bit length, big endian byte order */
! 393: ctx->sha_out[112] = bitLengthMSB >> 56;
! 394: ctx->sha_out[113] = bitLengthMSB >> 48;
! 395: ctx->sha_out[114] = bitLengthMSB >> 40;
! 396: ctx->sha_out[115] = bitLengthMSB >> 32;
! 397: ctx->sha_out[116] = bitLengthMSB >> 24;
! 398: ctx->sha_out[117] = bitLengthMSB >> 16;
! 399: ctx->sha_out[118] = bitLengthMSB >> 8;
! 400: ctx->sha_out[119] = bitLengthMSB;
! 401: ctx->sha_out[120] = bitLength >> 56;
! 402: ctx->sha_out[121] = bitLength >> 48;
! 403: ctx->sha_out[122] = bitLength >> 40;
! 404: ctx->sha_out[123] = bitLength >> 32;
! 405: ctx->sha_out[124] = bitLength >> 24;
! 406: ctx->sha_out[125] = bitLength >> 16;
! 407: ctx->sha_out[126] = bitLength >> 8;
! 408: ctx->sha_out[127] = bitLength;
! 409: sha512_transform(ctx, &ctx->sha_out[0]);
! 410:
! 411: datap = buf;
! 412: j = 0;
! 413: do {
! 414: i = ctx->sha_H[j];
! 415: datap[0] = i >> 56;
! 416: datap[1] = i >> 48;
! 417: datap[2] = i >> 40;
! 418: datap[3] = i >> 32;
! 419: datap[4] = i >> 24;
! 420: datap[5] = i >> 16;
! 421: datap[6] = i >> 8;
! 422: datap[7] = i;
! 423: datap += 8;
! 424: } while(++j < len / 8);
! 425: }
! 426:
! 427: METHOD(hasher_t, reset224, bool,
! 428: private_sha256_hasher_t *this)
! 429: {
! 430: memcpy(&this->sha_H[0], &sha224_hashInit[0], sizeof(this->sha_H));
! 431: this->sha_blocks = 0;
! 432: this->sha_bufCnt = 0;
! 433: return TRUE;
! 434: }
! 435:
! 436: METHOD(hasher_t, reset256, bool,
! 437: private_sha256_hasher_t *this)
! 438: {
! 439: memcpy(&this->sha_H[0], &sha256_hashInit[0], sizeof(this->sha_H));
! 440: this->sha_blocks = 0;
! 441: this->sha_bufCnt = 0;
! 442: return TRUE;
! 443: }
! 444:
! 445: METHOD(hasher_t, reset384, bool,
! 446: private_sha512_hasher_t *this)
! 447: {
! 448: memcpy(&this->sha_H[0], &sha384_hashInit[0], sizeof(this->sha_H));
! 449: this->sha_blocks = 0;
! 450: this->sha_blocksMSB = 0;
! 451: this->sha_bufCnt = 0;
! 452: return TRUE;
! 453: }
! 454:
! 455: METHOD(hasher_t, reset512, bool,
! 456: private_sha512_hasher_t *this)
! 457: {
! 458: memcpy(&this->sha_H[0], &sha512_hashInit[0], sizeof(this->sha_H));
! 459: this->sha_blocks = 0;
! 460: this->sha_blocksMSB = 0;
! 461: this->sha_bufCnt = 0;
! 462: return TRUE;
! 463: }
! 464:
! 465: METHOD(hasher_t, get_hash224, bool,
! 466: private_sha256_hasher_t *this, chunk_t chunk, uint8_t *buffer)
! 467: {
! 468: sha256_write(this, chunk.ptr, chunk.len);
! 469: if (buffer != NULL)
! 470: {
! 471: sha256_final(this, buffer, HASH_SIZE_SHA224);
! 472: reset224(this);
! 473: }
! 474: return TRUE;
! 475: }
! 476:
! 477: METHOD(hasher_t, get_hash256, bool,
! 478: private_sha256_hasher_t *this, chunk_t chunk, uint8_t *buffer)
! 479: {
! 480: sha256_write(this, chunk.ptr, chunk.len);
! 481: if (buffer != NULL)
! 482: {
! 483: sha256_final(this, buffer, HASH_SIZE_SHA256);
! 484: reset256(this);
! 485: }
! 486: return TRUE;
! 487: }
! 488:
! 489: METHOD(hasher_t, get_hash384, bool,
! 490: private_sha512_hasher_t *this, chunk_t chunk, uint8_t *buffer)
! 491: {
! 492: sha512_write(this, chunk.ptr, chunk.len);
! 493: if (buffer != NULL)
! 494: {
! 495: sha512_final(this, buffer, HASH_SIZE_SHA384);
! 496: reset384(this);
! 497: }
! 498: return TRUE;
! 499: }
! 500:
! 501: METHOD(hasher_t, get_hash512, bool,
! 502: private_sha512_hasher_t *this, chunk_t chunk, uint8_t *buffer)
! 503: {
! 504: sha512_write(this, chunk.ptr, chunk.len);
! 505: if (buffer != NULL)
! 506: {
! 507: sha512_final(this, buffer, HASH_SIZE_SHA512);
! 508: reset512(this);
! 509: }
! 510: return TRUE;
! 511: }
! 512:
! 513: METHOD(hasher_t, allocate_hash224, bool,
! 514: private_sha256_hasher_t *this, chunk_t chunk, chunk_t *hash)
! 515: {
! 516: chunk_t allocated_hash = chunk_empty;
! 517:
! 518: if (hash)
! 519: {
! 520: *hash = allocated_hash = chunk_alloc(HASH_SIZE_SHA224);
! 521: }
! 522: return get_hash224(this, chunk, allocated_hash.ptr);
! 523: }
! 524:
! 525: METHOD(hasher_t, allocate_hash256, bool,
! 526: private_sha256_hasher_t *this, chunk_t chunk, chunk_t *hash)
! 527: {
! 528: chunk_t allocated_hash = chunk_empty;
! 529:
! 530: if (hash)
! 531: {
! 532: *hash = allocated_hash = chunk_alloc(HASH_SIZE_SHA256);
! 533: }
! 534: return get_hash256(this, chunk, allocated_hash.ptr);
! 535: }
! 536:
! 537: METHOD(hasher_t, allocate_hash384, bool,
! 538: private_sha512_hasher_t *this, chunk_t chunk, chunk_t *hash)
! 539: {
! 540: chunk_t allocated_hash = chunk_empty;
! 541:
! 542: if (hash)
! 543: {
! 544: *hash = allocated_hash = chunk_alloc(HASH_SIZE_SHA384);
! 545: }
! 546: return get_hash384(this, chunk, allocated_hash.ptr);
! 547: }
! 548:
! 549: METHOD(hasher_t, allocate_hash512, bool,
! 550: private_sha512_hasher_t *this, chunk_t chunk, chunk_t *hash)
! 551: {
! 552: chunk_t allocated_hash = chunk_empty;
! 553:
! 554: if (hash)
! 555: {
! 556: *hash = allocated_hash = chunk_alloc(HASH_SIZE_SHA512);
! 557: }
! 558: return get_hash512(this, chunk, allocated_hash.ptr);
! 559: }
! 560:
! 561: METHOD(hasher_t, get_hash_size224, size_t,
! 562: private_sha256_hasher_t *this)
! 563: {
! 564: return HASH_SIZE_SHA224;
! 565: }
! 566:
! 567: METHOD(hasher_t, get_hash_size256, size_t,
! 568: private_sha256_hasher_t *this)
! 569: {
! 570: return HASH_SIZE_SHA256;
! 571: }
! 572:
! 573: METHOD(hasher_t, get_hash_size384, size_t,
! 574: private_sha512_hasher_t *this)
! 575: {
! 576: return HASH_SIZE_SHA384;
! 577: }
! 578:
! 579: METHOD(hasher_t, get_hash_size512, size_t,
! 580: private_sha512_hasher_t *this)
! 581: {
! 582: return HASH_SIZE_SHA512;
! 583: }
! 584:
! 585: METHOD(hasher_t, destroy, void,
! 586: sha2_hasher_t *this)
! 587: {
! 588: free(this);
! 589: }
! 590:
! 591: /*
! 592: * Described in header.
! 593: */
! 594: sha2_hasher_t *sha2_hasher_create(hash_algorithm_t algorithm)
! 595: {
! 596: switch (algorithm)
! 597: {
! 598: case HASH_SHA224:
! 599: {
! 600: private_sha256_hasher_t *this;
! 601:
! 602: INIT(this,
! 603: .public = {
! 604: .hasher_interface = {
! 605: .reset = _reset224,
! 606: .get_hash_size = _get_hash_size224,
! 607: .get_hash = _get_hash224,
! 608: .allocate_hash = _allocate_hash224,
! 609: .destroy = _destroy,
! 610: },
! 611: },
! 612: );
! 613: reset224(this);
! 614: return &this->public;
! 615: }
! 616: case HASH_SHA256:
! 617: {
! 618: private_sha256_hasher_t *this;
! 619:
! 620: INIT(this,
! 621: .public = {
! 622: .hasher_interface = {
! 623: .reset = _reset256,
! 624: .get_hash_size = _get_hash_size256,
! 625: .get_hash = _get_hash256,
! 626: .allocate_hash = _allocate_hash256,
! 627: .destroy = _destroy,
! 628: },
! 629: },
! 630: );
! 631: reset256(this);
! 632: return &this->public;
! 633: }
! 634: case HASH_SHA384:
! 635: {
! 636: private_sha512_hasher_t *this;
! 637:
! 638: INIT(this,
! 639: .public = {
! 640: .hasher_interface = {
! 641: .reset = _reset384,
! 642: .get_hash_size = _get_hash_size384,
! 643: .get_hash = _get_hash384,
! 644: .allocate_hash = _allocate_hash384,
! 645: .destroy = _destroy,
! 646: },
! 647: },
! 648: );
! 649: reset384(this);
! 650: return &this->public;
! 651: }
! 652: case HASH_SHA512:
! 653: {
! 654: private_sha512_hasher_t *this;
! 655:
! 656: INIT(this,
! 657: .public = {
! 658: .hasher_interface = {
! 659: .reset = _reset512,
! 660: .get_hash_size = _get_hash_size512,
! 661: .get_hash = _get_hash512,
! 662: .allocate_hash = _allocate_hash512,
! 663: .destroy = _destroy,
! 664: },
! 665: },
! 666: );
! 667: reset512(this);
! 668: return &this->public;
! 669: }
! 670: default:
! 671: return NULL;
! 672: }
! 673: }
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to sha2_hasher.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / strongswan / src / libstrongswan / plugins / sha2