//======================================================================== // // Decrypt.cc // // Copyright 1996-2003 Glyph & Cog, LLC // //======================================================================== #include #ifdef USE_GCC_PRAGMAS #pragma implementation #endif #include #include "gmem.h" #include "gmempp.h" #include "Decrypt.h" static void aes256KeyExpansion(DecryptAES256State *s, Guchar *objKey, int objKeyLen); static void aes256DecryptBlock(DecryptAES256State *s, Guchar *in, GBool last); static void sha256(Guchar *msg, int msgLen, Guchar *hash); static void sha384(Guchar *msg, int msgLen, Guchar *hash); static void sha512(Guchar *msg, int msgLen, Guchar *hash); static Guchar passwordPad[32] = { 0x28, 0xbf, 0x4e, 0x5e, 0x4e, 0x75, 0x8a, 0x41, 0x64, 0x00, 0x4e, 0x56, 0xff, 0xfa, 0x01, 0x08, 0x2e, 0x2e, 0x00, 0xb6, 0xd0, 0x68, 0x3e, 0x80, 0x2f, 0x0c, 0xa9, 0xfe, 0x64, 0x53, 0x69, 0x7a }; //------------------------------------------------------------------------ // Decrypt //------------------------------------------------------------------------ GBool Decrypt::makeFileKey(int encVersion, int encRevision, int keyLength, GString *ownerKey, GString *userKey, GString *ownerEnc, GString *userEnc, int permissions, GString *fileID, GString *ownerPassword, GString *userPassword, Guchar *fileKey, GBool encryptMetadata, GBool *ownerPasswordOk) { DecryptAES256State state; Guchar test[127 + 56], test2[32]; GString *userPassword2; const char *userPW; Guchar fState[256]; Guchar tmpKey[16]; Guchar fx, fy; int len, i, j; *ownerPasswordOk = gFalse; if (encRevision == 5 || encRevision == 6) { // check the owner password if (ownerPassword) { //~ this is supposed to convert the password to UTF-8 using "SASLprep" len = ownerPassword->getLength(); if (len > 127) { len = 127; } memcpy(test, ownerPassword->getCString(), len); memcpy(test + len, ownerKey->getCString() + 32, 8); memcpy(test + len + 8, userKey->getCString(), 48); sha256(test, len + 56, test); if (encRevision == 6) { r6Hash(test, 32, ownerPassword->getCString(), len, userKey->getCString()); } if (!memcmp(test, ownerKey->getCString(), 32)) { // compute the file key from the owner password memcpy(test, ownerPassword->getCString(), len); memcpy(test + len, ownerKey->getCString() + 40, 8); memcpy(test + len + 8, userKey->getCString(), 48); sha256(test, len + 56, test); if (encRevision == 6) { r6Hash(test, 32, ownerPassword->getCString(), len, userKey->getCString()); } aes256KeyExpansion(&state, test, 32); for (i = 0; i < 16; ++i) { state.cbc[i] = 0; } aes256DecryptBlock(&state, (Guchar *)ownerEnc->getCString(), gFalse); memcpy(fileKey, state.buf, 16); aes256DecryptBlock(&state, (Guchar *)ownerEnc->getCString() + 16, gFalse); memcpy(fileKey + 16, state.buf, 16); *ownerPasswordOk = gTrue; return gTrue; } } // check the user password if (userPassword) { //~ this is supposed to convert the password to UTF-8 using "SASLprep" userPW = userPassword->getCString(); len = userPassword->getLength(); if (len > 127) { len = 127; } } else { userPW = ""; len = 0; } memcpy(test, userPW, len); memcpy(test + len, userKey->getCString() + 32, 8); sha256(test, len + 8, test); if (encRevision == 6) { r6Hash(test, 32, userPW, len, NULL); } if (!memcmp(test, userKey->getCString(), 32)) { // compute the file key from the user password memcpy(test, userPW, len); memcpy(test + len, userKey->getCString() + 40, 8); sha256(test, len + 8, test); if (encRevision == 6) { r6Hash(test, 32, userPW, len, NULL); } aes256KeyExpansion(&state, test, 32); for (i = 0; i < 16; ++i) { state.cbc[i] = 0; } aes256DecryptBlock(&state, (Guchar *)userEnc->getCString(), gFalse); memcpy(fileKey, state.buf, 16); aes256DecryptBlock(&state, (Guchar *)userEnc->getCString() + 16, gFalse); memcpy(fileKey + 16, state.buf, 16); return gTrue; } return gFalse; } else { // try using the supplied owner password to generate the user password if (ownerPassword) { len = ownerPassword->getLength(); if (len < 32) { memcpy(test, ownerPassword->getCString(), len); memcpy(test + len, passwordPad, 32 - len); } else { memcpy(test, ownerPassword->getCString(), 32); } md5(test, 32, test); if (encRevision == 3) { for (i = 0; i < 50; ++i) { md5(test, keyLength, test); } } if (encRevision == 2) { rc4InitKey(test, keyLength, fState); fx = fy = 0; for (i = 0; i < 32; ++i) { test2[i] = rc4DecryptByte(fState, &fx, &fy, ownerKey->getChar(i)); } } else { memcpy(test2, ownerKey->getCString(), 32); for (i = 19; i >= 0; --i) { for (j = 0; j < keyLength; ++j) { tmpKey[j] = (Guchar)(test[j] ^ i); } rc4InitKey(tmpKey, keyLength, fState); fx = fy = 0; for (j = 0; j < 32; ++j) { test2[j] = rc4DecryptByte(fState, &fx, &fy, test2[j]); } } } userPassword2 = new GString((char *)test2, 32); if (makeFileKey2(encVersion, encRevision, keyLength, ownerKey, userKey, permissions, fileID, userPassword2, fileKey, encryptMetadata)) { *ownerPasswordOk = gTrue; delete userPassword2; return gTrue; } delete userPassword2; } // try using the supplied user password return makeFileKey2(encVersion, encRevision, keyLength, ownerKey, userKey, permissions, fileID, userPassword, fileKey, encryptMetadata); } } void Decrypt::r6Hash(Guchar *key, int keyLen, const char *pwd, int pwdLen, char *userKey) { Guchar key1[64*(127+64+48)]; DecryptAESState state128; int n, i, j, k; i = 0; while (1) { memcpy(key1, pwd, pwdLen); memcpy(key1 + pwdLen, key, keyLen); n = pwdLen + keyLen; if (userKey) { memcpy(key1 + pwdLen + keyLen, userKey, 48); n += 48; } for (j = 1; j < 64; ++j) { memcpy(key1 + j * n, key1, n); } n *= 64; aesKeyExpansion(&state128, key, 16, gFalse); for (j = 0; j < 16; ++j) { state128.cbc[j] = key[16+j]; } for (j = 0; j < n; j += 16) { aesEncryptBlock(&state128, key1 + j); memcpy(key1 + j, state128.buf, 16); } k = 0; for (j = 0; j < 16; ++j) { k += key1[j] % 3; } k %= 3; switch (k) { case 0: sha256(key1, n, key); keyLen = 32; break; case 1: sha384(key1, n, key); keyLen = 48; break; case 2: sha512(key1, n, key); keyLen = 64; break; } // from the spec, it appears that i should be incremented after // the test, but that doesn't match what Adobe does ++i; if (i >= 64 && key1[n - 1] <= i - 32) { break; } } } GBool Decrypt::makeFileKey2(int encVersion, int encRevision, int keyLength, GString *ownerKey, GString *userKey, int permissions, GString *fileID, GString *userPassword, Guchar *fileKey, GBool encryptMetadata) { Guchar *buf; Guchar test[32]; Guchar fState[256]; Guchar tmpKey[16]; Guchar fx, fy; int len, i, j; GBool ok; // generate file key buf = (Guchar *)gmalloc(72 + fileID->getLength()); if (userPassword) { len = userPassword->getLength(); if (len < 32) { memcpy(buf, userPassword->getCString(), len); memcpy(buf + len, passwordPad, 32 - len); } else { memcpy(buf, userPassword->getCString(), 32); } } else { memcpy(buf, passwordPad, 32); } memcpy(buf + 32, ownerKey->getCString(), 32); buf[64] = (Guchar)(permissions & 0xff); buf[65] = (Guchar)((permissions >> 8) & 0xff); buf[66] = (Guchar)((permissions >> 16) & 0xff); buf[67] = (Guchar)((permissions >> 24) & 0xff); memcpy(buf + 68, fileID->getCString(), fileID->getLength()); len = 68 + fileID->getLength(); if (!encryptMetadata) { buf[len++] = 0xff; buf[len++] = 0xff; buf[len++] = 0xff; buf[len++] = 0xff; } md5(buf, len, fileKey); if (encRevision == 3) { for (i = 0; i < 50; ++i) { md5(fileKey, keyLength, fileKey); } } // test user password if (encRevision == 2) { rc4InitKey(fileKey, keyLength, fState); fx = fy = 0; for (i = 0; i < 32; ++i) { test[i] = rc4DecryptByte(fState, &fx, &fy, userKey->getChar(i)); } ok = memcmp(test, passwordPad, 32) == 0; } else if (encRevision == 3) { memcpy(test, userKey->getCString(), 32); for (i = 19; i >= 0; --i) { for (j = 0; j < keyLength; ++j) { tmpKey[j] = (Guchar)(fileKey[j] ^ i); } rc4InitKey(tmpKey, keyLength, fState); fx = fy = 0; for (j = 0; j < 32; ++j) { test[j] = rc4DecryptByte(fState, &fx, &fy, test[j]); } } memcpy(buf, passwordPad, 32); memcpy(buf + 32, fileID->getCString(), fileID->getLength()); md5(buf, 32 + fileID->getLength(), buf); ok = memcmp(test, buf, 16) == 0; } else { ok = gFalse; } gfree(buf); return ok; } //------------------------------------------------------------------------ // DecryptStream //------------------------------------------------------------------------ DecryptStream::DecryptStream(Stream *strA, Guchar *fileKeyA, CryptAlgorithm algoA, int keyLengthA, int objNumA, int objGenA): FilterStream(strA) { int i; memcpy(fileKey, fileKeyA, keyLengthA); algo = algoA; keyLength = keyLengthA; objNum = objNumA; objGen = objGenA; // construct object key for (i = 0; i < keyLength; ++i) { objKey[i] = fileKey[i]; } switch (algo) { case cryptRC4: objKey[keyLength] = (Guchar)(objNum & 0xff); objKey[keyLength + 1] = (Guchar)((objNum >> 8) & 0xff); objKey[keyLength + 2] = (Guchar)((objNum >> 16) & 0xff); objKey[keyLength + 3] = (Guchar)(objGen & 0xff); objKey[keyLength + 4] = (Guchar)((objGen >> 8) & 0xff); md5(objKey, keyLength + 5, objKey); if ((objKeyLength = keyLength + 5) > 16) { objKeyLength = 16; } break; case cryptAES: objKey[keyLength] = (Guchar)(objNum & 0xff); objKey[keyLength + 1] = (Guchar)((objNum >> 8) & 0xff); objKey[keyLength + 2] = (Guchar)((objNum >> 16) & 0xff); objKey[keyLength + 3] = (Guchar)(objGen & 0xff); objKey[keyLength + 4] = (Guchar)((objGen >> 8) & 0xff); objKey[keyLength + 5] = 0x73; // 's' objKey[keyLength + 6] = 0x41; // 'A' objKey[keyLength + 7] = 0x6c; // 'l' objKey[keyLength + 8] = 0x54; // 'T' md5(objKey, keyLength + 9, objKey); if ((objKeyLength = keyLength + 5) > 16) { objKeyLength = 16; } break; case cryptAES256: objKeyLength = keyLength; break; } } DecryptStream::~DecryptStream() { delete str; } Stream *DecryptStream::copy() { return new DecryptStream(str->copy(), fileKey, algo, keyLength, objNum, objGen); } void DecryptStream::reset() { str->reset(); switch (algo) { case cryptRC4: state.rc4.x = state.rc4.y = 0; rc4InitKey(objKey, objKeyLength, state.rc4.state); state.rc4.buf = EOF; break; case cryptAES: aesKeyExpansion(&state.aes, objKey, objKeyLength, gTrue); str->getBlock((char *)state.aes.cbc, 16); state.aes.bufIdx = 16; break; case cryptAES256: aes256KeyExpansion(&state.aes256, objKey, objKeyLength); str->getBlock((char *)state.aes256.cbc, 16); state.aes256.bufIdx = 16; break; } } int DecryptStream::getChar() { Guchar in[16]; int c; c = EOF; // make gcc happy switch (algo) { case cryptRC4: if (state.rc4.buf == EOF) { c = str->getChar(); if (c != EOF) { state.rc4.buf = rc4DecryptByte(state.rc4.state, &state.rc4.x, &state.rc4.y, (Guchar)c); } } c = state.rc4.buf; state.rc4.buf = EOF; break; case cryptAES: if (state.aes.bufIdx == 16) { if (str->getBlock((char *)in, 16) != 16) { return EOF; } aesDecryptBlock(&state.aes, in, str->lookChar() == EOF); } if (state.aes.bufIdx == 16) { c = EOF; } else { c = state.aes.buf[state.aes.bufIdx++]; } break; case cryptAES256: if (state.aes256.bufIdx == 16) { if (str->getBlock((char *)in, 16) != 16) { return EOF; } aes256DecryptBlock(&state.aes256, in, str->lookChar() == EOF); } if (state.aes256.bufIdx == 16) { c = EOF; } else { c = state.aes256.buf[state.aes256.bufIdx++]; } break; } return c; } int DecryptStream::lookChar() { Guchar in[16]; int c; c = EOF; // make gcc happy switch (algo) { case cryptRC4: if (state.rc4.buf == EOF) { c = str->getChar(); if (c != EOF) { state.rc4.buf = rc4DecryptByte(state.rc4.state, &state.rc4.x, &state.rc4.y, (Guchar)c); } } c = state.rc4.buf; break; case cryptAES: if (state.aes.bufIdx == 16) { if (str->getBlock((char *)in, 16) != 16) { return EOF; } aesDecryptBlock(&state.aes, in, str->lookChar() == EOF); } if (state.aes.bufIdx == 16) { c = EOF; } else { c = state.aes.buf[state.aes.bufIdx]; } break; case cryptAES256: if (state.aes256.bufIdx == 16) { if (str->getBlock((char *)in, 16) != 16) { return EOF; } aes256DecryptBlock(&state.aes256, in, str->lookChar() == EOF); } if (state.aes256.bufIdx == 16) { c = EOF; } else { c = state.aes256.buf[state.aes256.bufIdx]; } break; } return c; } GBool DecryptStream::isBinary(GBool last) { return str->isBinary(last); } //------------------------------------------------------------------------ // RC4-compatible decryption //------------------------------------------------------------------------ void rc4InitKey(Guchar *key, int keyLen, Guchar *state) { Guchar index1, index2; Guchar t; int i; for (i = 0; i < 256; ++i) state[i] = (Guchar)i; index1 = index2 = 0; for (i = 0; i < 256; ++i) { index2 = (Guchar)(key[index1] + state[i] + index2); t = state[i]; state[i] = state[index2]; state[index2] = t; index1 = (Guchar)((index1 + 1) % keyLen); } } Guchar rc4DecryptByte(Guchar *state, Guchar *x, Guchar *y, Guchar c) { Guchar x1, y1, tx, ty; x1 = *x = (Guchar)(*x + 1); y1 = *y = (Guchar)(state[*x] + *y); tx = state[x1]; ty = state[y1]; state[x1] = ty; state[y1] = tx; return c ^ state[(tx + ty) % 256]; } //------------------------------------------------------------------------ // AES decryption //------------------------------------------------------------------------ static Guchar sbox[256] = { 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 }; static Guchar invSbox[256] = { 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d }; static Guint rcon[11] = { 0x00000000, // unused 0x01000000, 0x02000000, 0x04000000, 0x08000000, 0x10000000, 0x20000000, 0x40000000, 0x80000000, 0x1b000000, 0x36000000 }; static inline Guint subWord(Guint x) { return (sbox[x >> 24] << 24) | (sbox[(x >> 16) & 0xff] << 16) | (sbox[(x >> 8) & 0xff] << 8) | sbox[x & 0xff]; } static inline Guint rotWord(Guint x) { return ((x << 8) & 0xffffffff) | (x >> 24); } static inline void subBytes(Guchar *state) { int i; for (i = 0; i < 16; ++i) { state[i] = sbox[state[i]]; } } static inline void invSubBytes(Guchar *state) { int i; for (i = 0; i < 16; ++i) { state[i] = invSbox[state[i]]; } } static inline void shiftRows(Guchar *state) { Guchar t; t = state[4]; state[4] = state[5]; state[5] = state[6]; state[6] = state[7]; state[7] = t; t = state[8]; state[8] = state[10]; state[10] = t; t = state[9]; state[9] = state[11]; state[11] = t; t = state[15]; state[15] = state[14]; state[14] = state[13]; state[13] = state[12]; state[12] = t; } static inline void invShiftRows(Guchar *state) { Guchar t; t = state[7]; state[7] = state[6]; state[6] = state[5]; state[5] = state[4]; state[4] = t; t = state[8]; state[8] = state[10]; state[10] = t; t = state[9]; state[9] = state[11]; state[11] = t; t = state[12]; state[12] = state[13]; state[13] = state[14]; state[14] = state[15]; state[15] = t; } // {02} \cdot s static inline Guchar mul02(Guchar s) { Guchar s2; s2 = (Guchar)((s & 0x80) ? ((s << 1) ^ 0x1b) : (s << 1)); return s2; } // {03} \cdot s static inline Guchar mul03(Guchar s) { Guchar s2; s2 = (Guchar)((s & 0x80) ? ((s << 1) ^ 0x1b) : (s << 1)); return s ^ s2; } // {09} \cdot s static inline Guchar mul09(Guchar s) { Guchar s2, s4, s8; s2 = (Guchar)((s & 0x80) ? ((s << 1) ^ 0x1b) : (s << 1)); s4 = (Guchar)((s2 & 0x80) ? ((s2 << 1) ^ 0x1b) : (s2 << 1)); s8 = (Guchar)((s4 & 0x80) ? ((s4 << 1) ^ 0x1b) : (s4 << 1)); return s ^ s8; } // {0b} \cdot s static inline Guchar mul0b(Guchar s) { Guchar s2, s4, s8; s2 = (Guchar)((s & 0x80) ? ((s << 1) ^ 0x1b) : (s << 1)); s4 = (Guchar)((s2 & 0x80) ? ((s2 << 1) ^ 0x1b) : (s2 << 1)); s8 = (Guchar)((s4 & 0x80) ? ((s4 << 1) ^ 0x1b) : (s4 << 1)); return s ^ s2 ^ s8; } // {0d} \cdot s static inline Guchar mul0d(Guchar s) { Guchar s2, s4, s8; s2 = (Guchar)((s & 0x80) ? ((s << 1) ^ 0x1b) : (s << 1)); s4 = (Guchar)((s2 & 0x80) ? ((s2 << 1) ^ 0x1b) : (s2 << 1)); s8 = (Guchar)((s4 & 0x80) ? ((s4 << 1) ^ 0x1b) : (s4 << 1)); return s ^ s4 ^ s8; } // {0e} \cdot s static inline Guchar mul0e(Guchar s) { Guchar s2, s4, s8; s2 = (Guchar)((s & 0x80) ? ((s << 1) ^ 0x1b) : (s << 1)); s4 = (Guchar)((s2 & 0x80) ? ((s2 << 1) ^ 0x1b) : (s2 << 1)); s8 = (Guchar)((s4 & 0x80) ? ((s4 << 1) ^ 0x1b) : (s4 << 1)); return s2 ^ s4 ^ s8; } static inline void mixColumns(Guchar *state) { int c; Guchar s0, s1, s2, s3; for (c = 0; c < 4; ++c) { s0 = state[c]; s1 = state[4+c]; s2 = state[8+c]; s3 = state[12+c]; state[c] = mul02(s0) ^ mul03(s1) ^ s2 ^ s3; state[4+c] = s0 ^ mul02(s1) ^ mul03(s2) ^ s3; state[8+c] = s0 ^ s1 ^ mul02(s2) ^ mul03(s3); state[12+c] = mul03(s0) ^ s1 ^ s2 ^ mul02(s3); } } static inline void invMixColumns(Guchar *state) { int c; Guchar s0, s1, s2, s3; for (c = 0; c < 4; ++c) { s0 = state[c]; s1 = state[4+c]; s2 = state[8+c]; s3 = state[12+c]; state[c] = mul0e(s0) ^ mul0b(s1) ^ mul0d(s2) ^ mul09(s3); state[4+c] = mul09(s0) ^ mul0e(s1) ^ mul0b(s2) ^ mul0d(s3); state[8+c] = mul0d(s0) ^ mul09(s1) ^ mul0e(s2) ^ mul0b(s3); state[12+c] = mul0b(s0) ^ mul0d(s1) ^ mul09(s2) ^ mul0e(s3); } } static inline void invMixColumnsW(Guint *w) { int c; Guchar s0, s1, s2, s3; for (c = 0; c < 4; ++c) { s0 = (Guchar)(w[c] >> 24); s1 = (Guchar)(w[c] >> 16); s2 = (Guchar)(w[c] >> 8); s3 = (Guchar)w[c]; w[c] = ((mul0e(s0) ^ mul0b(s1) ^ mul0d(s2) ^ mul09(s3)) << 24) | ((mul09(s0) ^ mul0e(s1) ^ mul0b(s2) ^ mul0d(s3)) << 16) | ((mul0d(s0) ^ mul09(s1) ^ mul0e(s2) ^ mul0b(s3)) << 8) | (mul0b(s0) ^ mul0d(s1) ^ mul09(s2) ^ mul0e(s3)); } } static inline void addRoundKey(Guchar *state, Guint *w) { int c; for (c = 0; c < 4; ++c) { state[c] ^= (Guchar)(w[c] >> 24); state[4+c] ^= (Guchar)(w[c] >> 16); state[8+c] ^= (Guchar)(w[c] >> 8); state[12+c] ^= (Guchar)w[c]; } } void aesKeyExpansion(DecryptAESState *s, Guchar *objKey, int objKeyLen, GBool decrypt) { Guint temp; int i, round; //~ this assumes objKeyLen == 16 for (i = 0; i < 4; ++i) { s->w[i] = (objKey[4*i] << 24) + (objKey[4*i+1] << 16) + (objKey[4*i+2] << 8) + objKey[4*i+3]; } for (i = 4; i < 44; ++i) { temp = s->w[i-1]; if (!(i & 3)) { temp = subWord(rotWord(temp)) ^ rcon[i/4]; } s->w[i] = s->w[i-4] ^ temp; } if (decrypt) { for (round = 1; round <= 9; ++round) { invMixColumnsW(&s->w[round * 4]); } } } void aesEncryptBlock(DecryptAESState *s, Guchar *in) { int c, round; // initial state + CBC for (c = 0; c < 4; ++c) { s->state[c] = in[4*c] ^ s->cbc[4*c]; s->state[4+c] = in[4*c+1] ^ s->cbc[4*c+1]; s->state[8+c] = in[4*c+2] ^ s->cbc[4*c+2]; s->state[12+c] = in[4*c+3] ^ s->cbc[4*c+3]; } // round 0 addRoundKey(s->state, &s->w[0]); // rounds 1 .. 9 for (round = 1; round <= 9; ++round) { subBytes(s->state); shiftRows(s->state); mixColumns(s->state); addRoundKey(s->state, &s->w[round * 4]); } // round 10 subBytes(s->state); shiftRows(s->state); addRoundKey(s->state, &s->w[10 * 4]); // output + save for next CBC for (c = 0; c < 4; ++c) { s->buf[4*c] = s->cbc[4*c] = s->state[c]; s->buf[4*c+1] = s->cbc[4*c+1] = s->state[4+c]; s->buf[4*c+2] = s->cbc[4*c+2] = s->state[8+c]; s->buf[4*c+3] = s->cbc[4*c+3] = s->state[12+c]; } } void aesDecryptBlock(DecryptAESState *s, Guchar *in, GBool last) { int c, round, n, i; // initial state for (c = 0; c < 4; ++c) { s->state[c] = in[4*c]; s->state[4+c] = in[4*c+1]; s->state[8+c] = in[4*c+2]; s->state[12+c] = in[4*c+3]; } // round 0 addRoundKey(s->state, &s->w[10 * 4]); // rounds 1-9 for (round = 9; round >= 1; --round) { invSubBytes(s->state); invShiftRows(s->state); invMixColumns(s->state); addRoundKey(s->state, &s->w[round * 4]); } // round 10 invSubBytes(s->state); invShiftRows(s->state); addRoundKey(s->state, &s->w[0]); // CBC for (c = 0; c < 4; ++c) { s->buf[4*c] = s->state[c] ^ s->cbc[4*c]; s->buf[4*c+1] = s->state[4+c] ^ s->cbc[4*c+1]; s->buf[4*c+2] = s->state[8+c] ^ s->cbc[4*c+2]; s->buf[4*c+3] = s->state[12+c] ^ s->cbc[4*c+3]; } // save the input block for the next CBC for (i = 0; i < 16; ++i) { s->cbc[i] = in[i]; } // remove padding s->bufIdx = 0; if (last) { n = s->buf[15]; if (n < 1 || n > 16) { // this should never happen n = 16; } for (i = 15; i >= n; --i) { s->buf[i] = s->buf[i-n]; } s->bufIdx = n; } } //------------------------------------------------------------------------ // AES-256 decryption //------------------------------------------------------------------------ static void aes256KeyExpansion(DecryptAES256State *s, Guchar *objKey, int objKeyLen) { Guint temp; int i, round; //~ this assumes objKeyLen == 32 for (i = 0; i < 8; ++i) { s->w[i] = (objKey[4*i] << 24) + (objKey[4*i+1] << 16) + (objKey[4*i+2] << 8) + objKey[4*i+3]; } for (i = 8; i < 60; ++i) { temp = s->w[i-1]; if ((i & 7) == 0) { temp = subWord(rotWord(temp)) ^ rcon[i/8]; } else if ((i & 7) == 4) { temp = subWord(temp); } s->w[i] = s->w[i-8] ^ temp; } for (round = 1; round <= 13; ++round) { invMixColumnsW(&s->w[round * 4]); } } static void aes256DecryptBlock(DecryptAES256State *s, Guchar *in, GBool last) { int c, round, n, i; // initial state for (c = 0; c < 4; ++c) { s->state[c] = in[4*c]; s->state[4+c] = in[4*c+1]; s->state[8+c] = in[4*c+2]; s->state[12+c] = in[4*c+3]; } // round 0 addRoundKey(s->state, &s->w[14 * 4]); // rounds 13-1 for (round = 13; round >= 1; --round) { invSubBytes(s->state); invShiftRows(s->state); invMixColumns(s->state); addRoundKey(s->state, &s->w[round * 4]); } // round 14 invSubBytes(s->state); invShiftRows(s->state); addRoundKey(s->state, &s->w[0]); // CBC for (c = 0; c < 4; ++c) { s->buf[4*c] = s->state[c] ^ s->cbc[4*c]; s->buf[4*c+1] = s->state[4+c] ^ s->cbc[4*c+1]; s->buf[4*c+2] = s->state[8+c] ^ s->cbc[4*c+2]; s->buf[4*c+3] = s->state[12+c] ^ s->cbc[4*c+3]; } // save the input block for the next CBC for (i = 0; i < 16; ++i) { s->cbc[i] = in[i]; } // remove padding s->bufIdx = 0; if (last) { n = s->buf[15]; if (n < 1 || n > 16) { // this should never happen n = 16; } for (i = 15; i >= n; --i) { s->buf[i] = s->buf[i-n]; } s->bufIdx = n; } } //------------------------------------------------------------------------ // MD5 message digest //------------------------------------------------------------------------ // this works around a bug in older Sun compilers static inline Gulong rotateLeft(Gulong x, int r) { x &= 0xffffffff; return ((x << r) | (x >> (32 - r))) & 0xffffffff; } static inline Gulong md5Round1(Gulong a, Gulong b, Gulong c, Gulong d, Gulong Xk, int s, Gulong Ti) { return b + rotateLeft((a + ((b & c) | (~b & d)) + Xk + Ti), s); } static inline Gulong md5Round2(Gulong a, Gulong b, Gulong c, Gulong d, Gulong Xk, int s, Gulong Ti) { return b + rotateLeft((a + ((b & d) | (c & ~d)) + Xk + Ti), s); } static inline Gulong md5Round3(Gulong a, Gulong b, Gulong c, Gulong d, Gulong Xk, int s, Gulong Ti) { return b + rotateLeft((a + (b ^ c ^ d) + Xk + Ti), s); } static inline Gulong md5Round4(Gulong a, Gulong b, Gulong c, Gulong d, Gulong Xk, int s, Gulong Ti) { return b + rotateLeft((a + (c ^ (b | ~d)) + Xk + Ti), s); } void md5Start(MD5State *state) { state->a = 0x67452301; state->b = 0xefcdab89; state->c = 0x98badcfe; state->d = 0x10325476; state->bufLen = 0; state->msgLen = 0; } static void md5ProcessBlock(MD5State *state) { Gulong x[16]; Gulong a, b, c, d; int i; for (i = 0; i < 16; ++i) { x[i] = state->buf[4*i] | (state->buf[4*i+1] << 8) | (state->buf[4*i+2] << 16) | (state->buf[4*i+3] << 24); } a = state->a; b = state->b; c = state->c; d = state->d; // round 1 a = md5Round1(a, b, c, d, x[0], 7, 0xd76aa478); d = md5Round1(d, a, b, c, x[1], 12, 0xe8c7b756); c = md5Round1(c, d, a, b, x[2], 17, 0x242070db); b = md5Round1(b, c, d, a, x[3], 22, 0xc1bdceee); a = md5Round1(a, b, c, d, x[4], 7, 0xf57c0faf); d = md5Round1(d, a, b, c, x[5], 12, 0x4787c62a); c = md5Round1(c, d, a, b, x[6], 17, 0xa8304613); b = md5Round1(b, c, d, a, x[7], 22, 0xfd469501); a = md5Round1(a, b, c, d, x[8], 7, 0x698098d8); d = md5Round1(d, a, b, c, x[9], 12, 0x8b44f7af); c = md5Round1(c, d, a, b, x[10], 17, 0xffff5bb1); b = md5Round1(b, c, d, a, x[11], 22, 0x895cd7be); a = md5Round1(a, b, c, d, x[12], 7, 0x6b901122); d = md5Round1(d, a, b, c, x[13], 12, 0xfd987193); c = md5Round1(c, d, a, b, x[14], 17, 0xa679438e); b = md5Round1(b, c, d, a, x[15], 22, 0x49b40821); // round 2 a = md5Round2(a, b, c, d, x[1], 5, 0xf61e2562); d = md5Round2(d, a, b, c, x[6], 9, 0xc040b340); c = md5Round2(c, d, a, b, x[11], 14, 0x265e5a51); b = md5Round2(b, c, d, a, x[0], 20, 0xe9b6c7aa); a = md5Round2(a, b, c, d, x[5], 5, 0xd62f105d); d = md5Round2(d, a, b, c, x[10], 9, 0x02441453); c = md5Round2(c, d, a, b, x[15], 14, 0xd8a1e681); b = md5Round2(b, c, d, a, x[4], 20, 0xe7d3fbc8); a = md5Round2(a, b, c, d, x[9], 5, 0x21e1cde6); d = md5Round2(d, a, b, c, x[14], 9, 0xc33707d6); c = md5Round2(c, d, a, b, x[3], 14, 0xf4d50d87); b = md5Round2(b, c, d, a, x[8], 20, 0x455a14ed); a = md5Round2(a, b, c, d, x[13], 5, 0xa9e3e905); d = md5Round2(d, a, b, c, x[2], 9, 0xfcefa3f8); c = md5Round2(c, d, a, b, x[7], 14, 0x676f02d9); b = md5Round2(b, c, d, a, x[12], 20, 0x8d2a4c8a); // round 3 a = md5Round3(a, b, c, d, x[5], 4, 0xfffa3942); d = md5Round3(d, a, b, c, x[8], 11, 0x8771f681); c = md5Round3(c, d, a, b, x[11], 16, 0x6d9d6122); b = md5Round3(b, c, d, a, x[14], 23, 0xfde5380c); a = md5Round3(a, b, c, d, x[1], 4, 0xa4beea44); d = md5Round3(d, a, b, c, x[4], 11, 0x4bdecfa9); c = md5Round3(c, d, a, b, x[7], 16, 0xf6bb4b60); b = md5Round3(b, c, d, a, x[10], 23, 0xbebfbc70); a = md5Round3(a, b, c, d, x[13], 4, 0x289b7ec6); d = md5Round3(d, a, b, c, x[0], 11, 0xeaa127fa); c = md5Round3(c, d, a, b, x[3], 16, 0xd4ef3085); b = md5Round3(b, c, d, a, x[6], 23, 0x04881d05); a = md5Round3(a, b, c, d, x[9], 4, 0xd9d4d039); d = md5Round3(d, a, b, c, x[12], 11, 0xe6db99e5); c = md5Round3(c, d, a, b, x[15], 16, 0x1fa27cf8); b = md5Round3(b, c, d, a, x[2], 23, 0xc4ac5665); // round 4 a = md5Round4(a, b, c, d, x[0], 6, 0xf4292244); d = md5Round4(d, a, b, c, x[7], 10, 0x432aff97); c = md5Round4(c, d, a, b, x[14], 15, 0xab9423a7); b = md5Round4(b, c, d, a, x[5], 21, 0xfc93a039); a = md5Round4(a, b, c, d, x[12], 6, 0x655b59c3); d = md5Round4(d, a, b, c, x[3], 10, 0x8f0ccc92); c = md5Round4(c, d, a, b, x[10], 15, 0xffeff47d); b = md5Round4(b, c, d, a, x[1], 21, 0x85845dd1); a = md5Round4(a, b, c, d, x[8], 6, 0x6fa87e4f); d = md5Round4(d, a, b, c, x[15], 10, 0xfe2ce6e0); c = md5Round4(c, d, a, b, x[6], 15, 0xa3014314); b = md5Round4(b, c, d, a, x[13], 21, 0x4e0811a1); a = md5Round4(a, b, c, d, x[4], 6, 0xf7537e82); d = md5Round4(d, a, b, c, x[11], 10, 0xbd3af235); c = md5Round4(c, d, a, b, x[2], 15, 0x2ad7d2bb); b = md5Round4(b, c, d, a, x[9], 21, 0xeb86d391); // increment a, b, c, d state->a += a; state->b += b; state->c += c; state->d += d; state->bufLen = 0; } void md5Append(MD5State *state, Guchar *data, int dataLen) { Guchar *p; int remain, k; p = data; remain = dataLen; while (state->bufLen + remain >= 64) { k = 64 - state->bufLen; memcpy(state->buf + state->bufLen, p, k); state->bufLen = 64; md5ProcessBlock(state); p += k; remain -= k; } if (remain > 0) { memcpy(state->buf + state->bufLen, p, remain); state->bufLen += remain; } state->msgLen += dataLen; } void md5Finish(MD5State *state) { // padding and length state->buf[state->bufLen++] = 0x80; if (state->bufLen > 56) { while (state->bufLen < 64) { state->buf[state->bufLen++] = 0x00; } md5ProcessBlock(state); } while (state->bufLen < 56) { state->buf[state->bufLen++] = 0x00; } state->buf[56] = (Guchar)(state->msgLen << 3); state->buf[57] = (Guchar)(state->msgLen >> 5); state->buf[58] = (Guchar)(state->msgLen >> 13); state->buf[59] = (Guchar)(state->msgLen >> 21); state->buf[60] = (Guchar)(state->msgLen >> 29); state->buf[61] = (Guchar)0; state->buf[62] = (Guchar)0; state->buf[63] = (Guchar)0; state->bufLen = 64; md5ProcessBlock(state); // break digest into bytes state->digest[0] = (Guchar)state->a; state->digest[1] = (Guchar)(state->a >> 8); state->digest[2] = (Guchar)(state->a >> 16); state->digest[3] = (Guchar)(state->a >> 24); state->digest[4] = (Guchar)state->b; state->digest[5] = (Guchar)(state->b >> 8); state->digest[6] = (Guchar)(state->b >> 16); state->digest[7] = (Guchar)(state->b >> 24); state->digest[8] = (Guchar)state->c; state->digest[9] = (Guchar)(state->c >> 8); state->digest[10] = (Guchar)(state->c >> 16); state->digest[11] = (Guchar)(state->c >> 24); state->digest[12] = (Guchar)state->d; state->digest[13] = (Guchar)(state->d >> 8); state->digest[14] = (Guchar)(state->d >> 16); state->digest[15] = (Guchar)(state->d >> 24); } void md5(Guchar *msg, int msgLen, Guchar *digest) { MD5State state; int i; if (msgLen < 0) { return; } md5Start(&state); md5Append(&state, msg, msgLen); md5Finish(&state); for (i = 0; i < 16; ++i) { digest[i] = state.digest[i]; } } //------------------------------------------------------------------------ // SHA-256 hash //------------------------------------------------------------------------ static Guint sha256K[64] = { 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 }; static inline Guint rotr(Guint x, Guint n) { return (x >> n) | (x << (32 - n)); } static inline Guint sha256Ch(Guint x, Guint y, Guint z) { return (x & y) ^ (~x & z); } static inline Guint sha256Maj(Guint x, Guint y, Guint z) { return (x & y) ^ (x & z) ^ (y & z); } static inline Guint sha256Sigma0(Guint x) { return rotr(x, 2) ^ rotr(x, 13) ^ rotr(x, 22); } static inline Guint sha256Sigma1(Guint x) { return rotr(x, 6) ^ rotr(x, 11) ^ rotr(x, 25); } static inline Guint sha256sigma0(Guint x) { return rotr(x, 7) ^ rotr(x, 18) ^ (x >> 3); } static inline Guint sha256sigma1(Guint x) { return rotr(x, 17) ^ rotr(x, 19) ^ (x >> 10); } static void sha256HashBlock(Guchar *blk, Guint *H) { Guint W[64]; Guint a, b, c, d, e, f, g, h; Guint T1, T2; Guint t; // 1. prepare the message schedule for (t = 0; t < 16; ++t) { W[t] = (blk[t*4] << 24) | (blk[t*4 + 1] << 16) | (blk[t*4 + 2] << 8) | blk[t*4 + 3]; } for (t = 16; t < 64; ++t) { W[t] = sha256sigma1(W[t-2]) + W[t-7] + sha256sigma0(W[t-15]) + W[t-16]; } // 2. initialize the eight working variables a = H[0]; b = H[1]; c = H[2]; d = H[3]; e = H[4]; f = H[5]; g = H[6]; h = H[7]; // 3. for (t = 0; t < 64; ++t) { T1 = h + sha256Sigma1(e) + sha256Ch(e,f,g) + sha256K[t] + W[t]; T2 = sha256Sigma0(a) + sha256Maj(a,b,c); h = g; g = f; f = e; e = d + T1; d = c; c = b; b = a; a = T1 + T2; } // 4. compute the intermediate hash value H[0] += a; H[1] += b; H[2] += c; H[3] += d; H[4] += e; H[5] += f; H[6] += g; H[7] += h; } static void sha256(Guchar *msg, int msgLen, Guchar *hash) { Guchar blk[64]; Guint H[8]; int blkLen, i; H[0] = 0x6a09e667; H[1] = 0xbb67ae85; H[2] = 0x3c6ef372; H[3] = 0xa54ff53a; H[4] = 0x510e527f; H[5] = 0x9b05688c; H[6] = 0x1f83d9ab; H[7] = 0x5be0cd19; blkLen = 0; for (i = 0; i + 64 <= msgLen; i += 64) { sha256HashBlock(msg + i, H); } blkLen = msgLen - i; if (blkLen > 0) { memcpy(blk, msg + i, blkLen); } // pad the message blk[blkLen++] = 0x80; if (blkLen > 56) { while (blkLen < 64) { blk[blkLen++] = 0; } sha256HashBlock(blk, H); blkLen = 0; } while (blkLen < 56) { blk[blkLen++] = 0; } blk[56] = 0; blk[57] = 0; blk[58] = 0; blk[59] = 0; blk[60] = (Guchar)(msgLen >> 21); blk[61] = (Guchar)(msgLen >> 13); blk[62] = (Guchar)(msgLen >> 5); blk[63] = (Guchar)(msgLen << 3); sha256HashBlock(blk, H); // copy the output into the buffer (convert words to bytes) for (i = 0; i < 8; ++i) { hash[i*4] = (Guchar)(H[i] >> 24); hash[i*4 + 1] = (Guchar)(H[i] >> 16); hash[i*4 + 2] = (Guchar)(H[i] >> 8); hash[i*4 + 3] = (Guchar)H[i]; } } //------------------------------------------------------------------------ // SHA-384 and SHA-512 hashes //------------------------------------------------------------------------ typedef unsigned long long SHA512Uint64; static SHA512Uint64 sha512K[80] = { 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL, 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL, 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL, 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL, 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL, 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL, 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL, 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL, 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL, 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL, 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL, 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL }; static inline SHA512Uint64 rotr64(SHA512Uint64 x, Guint n) { return (x >> n) | (x << (64 - n)); } static inline SHA512Uint64 sha512Ch(SHA512Uint64 x, SHA512Uint64 y, SHA512Uint64 z) { return (x & y) ^ (~x & z); } static inline SHA512Uint64 sha512Maj(SHA512Uint64 x, SHA512Uint64 y, SHA512Uint64 z) { return (x & y) ^ (x & z) ^ (y & z); } static inline SHA512Uint64 sha512Sigma0(SHA512Uint64 x) { return rotr64(x, 28) ^ rotr64(x, 34) ^ rotr64(x, 39); } static inline SHA512Uint64 sha512Sigma1(SHA512Uint64 x) { return rotr64(x, 14) ^ rotr64(x, 18) ^ rotr64(x, 41); } static inline SHA512Uint64 sha512sigma0(SHA512Uint64 x) { return rotr64(x, 1) ^ rotr64(x, 8) ^ (x >> 7); } static inline SHA512Uint64 sha512sigma1(SHA512Uint64 x) { return rotr64(x, 19) ^ rotr64(x, 61) ^ (x >> 6); } static void sha512HashBlock(Guchar *blk, SHA512Uint64 *H) { SHA512Uint64 W[80]; SHA512Uint64 a, b, c, d, e, f, g, h; SHA512Uint64 T1, T2; Guint t; // 1. prepare the message schedule for (t = 0; t < 16; ++t) { W[t] = ((SHA512Uint64)blk[t*8] << 56) | ((SHA512Uint64)blk[t*8 + 1] << 48) | ((SHA512Uint64)blk[t*8 + 2] << 40) | ((SHA512Uint64)blk[t*8 + 3] << 32) | ((SHA512Uint64)blk[t*8 + 4] << 24) | ((SHA512Uint64)blk[t*8 + 5] << 16) | ((SHA512Uint64)blk[t*8 + 6] << 8) | (SHA512Uint64)blk[t*8 + 7]; } for (t = 16; t < 80; ++t) { W[t] = sha512sigma1(W[t-2]) + W[t-7] + sha512sigma0(W[t-15]) + W[t-16]; } // 2. initialize the eight working variables a = H[0]; b = H[1]; c = H[2]; d = H[3]; e = H[4]; f = H[5]; g = H[6]; h = H[7]; // 3. for (t = 0; t < 80; ++t) { T1 = h + sha512Sigma1(e) + sha512Ch(e,f,g) + sha512K[t] + W[t]; T2 = sha512Sigma0(a) + sha512Maj(a,b,c); h = g; g = f; f = e; e = d + T1; d = c; c = b; b = a; a = T1 + T2; } // 4. compute the intermediate hash value H[0] += a; H[1] += b; H[2] += c; H[3] += d; H[4] += e; H[5] += f; H[6] += g; H[7] += h; } static void sha512(Guchar *msg, int msgLen, Guchar *hash) { Guchar blk[128]; SHA512Uint64 H[8]; int blkLen, i; H[0] = 0x6a09e667f3bcc908LL; H[1] = 0xbb67ae8584caa73bLL; H[2] = 0x3c6ef372fe94f82bLL; H[3] = 0xa54ff53a5f1d36f1LL; H[4] = 0x510e527fade682d1LL; H[5] = 0x9b05688c2b3e6c1fLL; H[6] = 0x1f83d9abfb41bd6bLL; H[7] = 0x5be0cd19137e2179LL; blkLen = 0; for (i = 0; i + 128 <= msgLen; i += 128) { sha512HashBlock(msg + i, H); } blkLen = msgLen - i; if (blkLen > 0) { memcpy(blk, msg + i, blkLen); } // pad the message blk[blkLen++] = 0x80; if (blkLen > 112) { while (blkLen < 128) { blk[blkLen++] = 0; } sha512HashBlock(blk, H); blkLen = 0; } while (blkLen < 112) { blk[blkLen++] = 0; } blk[112] = 0; blk[113] = 0; blk[114] = 0; blk[115] = 0; blk[116] = 0; blk[117] = 0; blk[118] = 0; blk[119] = 0; blk[120] = 0; blk[121] = 0; blk[122] = 0; blk[123] = 0; blk[124] = (Guchar)(msgLen >> 21); blk[125] = (Guchar)(msgLen >> 13); blk[126] = (Guchar)(msgLen >> 5); blk[127] = (Guchar)(msgLen << 3); sha512HashBlock(blk, H); // copy the output into the buffer (convert words to bytes) for (i = 0; i < 8; ++i) { hash[i*8] = (Guchar)(H[i] >> 56); hash[i*8 + 1] = (Guchar)(H[i] >> 48); hash[i*8 + 2] = (Guchar)(H[i] >> 40); hash[i*8 + 3] = (Guchar)(H[i] >> 32); hash[i*8 + 4] = (Guchar)(H[i] >> 24); hash[i*8 + 5] = (Guchar)(H[i] >> 16); hash[i*8 + 6] = (Guchar)(H[i] >> 8); hash[i*8 + 7] = (Guchar)H[i]; } } static void sha384(Guchar *msg, int msgLen, Guchar *hash) { Guchar blk[128]; SHA512Uint64 H[8]; int blkLen, i; H[0] = 0xcbbb9d5dc1059ed8LL; H[1] = 0x629a292a367cd507LL; H[2] = 0x9159015a3070dd17LL; H[3] = 0x152fecd8f70e5939LL; H[4] = 0x67332667ffc00b31LL; H[5] = 0x8eb44a8768581511LL; H[6] = 0xdb0c2e0d64f98fa7LL; H[7] = 0x47b5481dbefa4fa4LL; blkLen = 0; for (i = 0; i + 128 <= msgLen; i += 128) { sha512HashBlock(msg + i, H); } blkLen = msgLen - i; if (blkLen > 0) { memcpy(blk, msg + i, blkLen); } // pad the message blk[blkLen++] = 0x80; if (blkLen > 112) { while (blkLen < 128) { blk[blkLen++] = 0; } sha512HashBlock(blk, H); blkLen = 0; } while (blkLen < 112) { blk[blkLen++] = 0; } blk[112] = 0; blk[113] = 0; blk[114] = 0; blk[115] = 0; blk[116] = 0; blk[117] = 0; blk[118] = 0; blk[119] = 0; blk[120] = 0; blk[121] = 0; blk[122] = 0; blk[123] = 0; blk[124] = (Guchar)(msgLen >> 21); blk[125] = (Guchar)(msgLen >> 13); blk[126] = (Guchar)(msgLen >> 5); blk[127] = (Guchar)(msgLen << 3); sha512HashBlock(blk, H); // copy the output into the buffer (convert words to bytes) for (i = 0; i < 6; ++i) { hash[i*8] = (Guchar)(H[i] >> 56); hash[i*8 + 1] = (Guchar)(H[i] >> 48); hash[i*8 + 2] = (Guchar)(H[i] >> 40); hash[i*8 + 3] = (Guchar)(H[i] >> 32); hash[i*8 + 4] = (Guchar)(H[i] >> 24); hash[i*8 + 5] = (Guchar)(H[i] >> 16); hash[i*8 + 6] = (Guchar)(H[i] >> 8); hash[i*8 + 7] = (Guchar)H[i]; } }