/* derived from the RSA Data Security, Inc. MD5 Message-Digest Algorithm */ #include <ntqstring.h> #include "qtmd5.h" typedef unsigned char *POINTER; typedef unsigned short int UINT2; typedef unsigned long int UINT4; typedef struct { UINT4 state[4]; // state(ABCD) UINT4 count[2]; // number of bits, modulo 2^64(lsb first) unsigned char buffer[64]; // input buffer } MD5_CTX; static void MD5Init(MD5_CTX *); static void MD5Update(MD5_CTX *, unsigned char *, unsigned int); static void MD5Final(unsigned char [16], MD5_CTX *); static void MD5Transform(UINT4[4], unsigned char[64]); static void Encode(unsigned char *, UINT4 *, unsigned int); static void Decode(UINT4 *, unsigned char *, unsigned int); static void MD5_memset(POINTER, int, unsigned int); static void MD5_memcpy(POINTER output,POINTER input,unsigned int len); // Constants for MD5Transform routine. enum { S11 = 7, S12 = 12, S13 = 17, S14 = 22, S21 = 5, S22 = 9, S23 = 14, S24 = 20, S31 = 4, S32 = 11, S33 = 16, S34 = 23, S41 = 6, S42 = 10, S43 = 15, S44 = 21 }; static unsigned char PADDING[64] = { 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; // F, G, H and I are basic MD5 functions. static inline UINT4 F(UINT4 x, UINT4 y, UINT4 z) { return(x & y) |((~x) & z); } static inline UINT4 G(UINT4 x, UINT4 y, UINT4 z) { return(x & z) |(y &(~z)); } static inline UINT4 H(UINT4 x, UINT4 y, UINT4 z) { return x ^ y ^ z; } static inline UINT4 I(UINT4 x, UINT4 y, UINT4 z) { return y ^(x |(~z)); } static inline UINT4 rotateLeft(UINT4 x, UINT4 n) { return(x << n) |(x >>(32-(n))); } // FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4. // Rotation is separate from addition to prevent recomputation. static inline void FF(UINT4 &a, UINT4 b, UINT4 c, UINT4 d, UINT4 x, UINT4 s, UINT4 ac) { a += F(b, c, d) + x + ac; a = rotateLeft(a, s); a += b; } static inline void GG(UINT4 &a, UINT4 b, UINT4 c, UINT4 d, UINT4 x, UINT4 s, UINT4 ac) { a += G(b, c, d) + x +(UINT4)(ac); a = rotateLeft(a, s); a += b; } static inline void HH(UINT4 &a, UINT4 b, UINT4 c, UINT4 d, UINT4 x, UINT4 s, UINT4 ac) { a += H(b, c, d) + x +(UINT4)(ac); a = rotateLeft(a, s); a += b; } static inline void II(UINT4 &a, UINT4 b, UINT4 c, UINT4 d, UINT4 x, UINT4 s, UINT4 ac) { a += I(b, c, d) + x +(UINT4)(ac); a = rotateLeft(a, s); a += b; } // MD5 initialization. Begins an MD5 operation, writing a new context. static void MD5Init(MD5_CTX *context) { context->count[0] = context->count[1] = 0; // Load magic initialization constants. context->state[0] = 0x67452301; context->state[1] = 0xefcdab89; context->state[2] = 0x98badcfe; context->state[3] = 0x10325476; } // MD5 block update operation. Continues an MD5 message-digest // operation, processing another message block, and updating the // context. static void MD5Update(MD5_CTX *context, unsigned char *input, unsigned int inputLen) { unsigned int i, index, partLen; // Compute number of bytes mod 64 index =(unsigned int)((context->count[0] >> 3) & 0x3F); // Update number of bits if ((context->count[0] +=((UINT4)inputLen << 3)) <((UINT4)inputLen << 3)) context->count[1]++; context->count[1] +=((UINT4)inputLen >> 29); partLen = 64 - index; // Transform as many times as possible. if (inputLen >= partLen) { MD5_memcpy((POINTER)&context->buffer[index],(POINTER)input, partLen); MD5Transform(context->state, context->buffer); for (i = partLen; i + 63 < inputLen; i += 64) MD5Transform(context->state, &input[i]); index = 0; } else { i = 0; } // Buffer remaining input MD5_memcpy((POINTER)&context->buffer[index],(POINTER)&input[i], inputLen-i); } // MD5 finalization. Ends an MD5 message-digest operation, writing the // the message digest and zeroizing the context. static void MD5Final(unsigned char digest[16], MD5_CTX *context) { unsigned char bits[8]; unsigned int index, padLen; // Save number of bits Encode(bits, context->count, 8); // Pad out to 56 mod 64. index =(unsigned int)((context->count[0] >> 3) & 0x3f); padLen =(index < 56) ?(56 - index) :(120 - index); MD5Update(context, PADDING, padLen); // Append length(before padding) MD5Update(context, bits, 8); // Store state in digest Encode(digest, context->state, 16); // Zeroize sensitive information. MD5_memset((POINTER)context, 0, sizeof(*context)); } // MD5 basic transformation. Transforms state based on block. static void MD5Transform(UINT4 state[4], unsigned char block[64]) { UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16]; Decode(x, block, 64); // Round 1 FF(a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */ FF(d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */ FF(c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */ FF(b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */ FF(a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */ FF(d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */ FF(c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */ FF(b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */ FF(a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */ FF(d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */ FF(c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */ FF(b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */ FF(a, b, c, d, x[12], S11, 0x6b901122); /* 13 */ FF(d, a, b, c, x[13], S12, 0xfd987193); /* 14 */ FF(c, d, a, b, x[14], S13, 0xa679438e); /* 15 */ FF(b, c, d, a, x[15], S14, 0x49b40821); /* 16 */ // Round 2 GG(a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */ GG(d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */ GG(c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */ GG(b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */ GG(a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */ GG(d, a, b, c, x[10], S22, 0x2441453); /* 22 */ GG(c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */ GG(b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */ GG(a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */ GG(d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */ GG(c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */ GG(b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */ GG(a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */ GG(d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */ GG(c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */ GG(b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */ // Round 3 HH(a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */ HH(d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */ HH(c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */ HH(b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */ HH(a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */ HH(d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */ HH(c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */ HH(b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */ HH(a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */ HH(d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */ HH(c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */ HH(b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */ HH(a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */ HH(d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */ HH(c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */ HH(b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */ // Round 4 II(a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */ II(d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */ II(c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */ II(b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */ II(a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */ II(d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */ II(c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */ II(b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */ II(a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */ II(d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */ II(c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */ II(b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */ II(a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */ II(d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */ II(c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */ II(b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */ state[0] += a; state[1] += b; state[2] += c; state[3] += d; // Zeroize sensitive information. MD5_memset((POINTER)x, 0, sizeof(x)); } // Encodes input(UINT4) into output(unsigned char). Assumes len is a // multiple of 4. static void Encode(unsigned char *output, UINT4 *input, unsigned int len) { unsigned int i, j; for (i = 0, j = 0; j < len; i++, j += 4) { output[j] = (unsigned char) (input[i] & 0xff); output[j+1] = (unsigned char) ((input[i] >> 8) & 0xff); output[j+2] = (unsigned char) ((input[i] >> 16) & 0xff); output[j+3] = (unsigned char) ((input[i] >> 24) & 0xff); } } // Decodes input(unsigned char) into output(UINT4). Assumes len is a // multiple of 4. static void Decode(UINT4 *output, unsigned char *input, unsigned int len) { unsigned int i, j; for (i = 0, j = 0; j < len; i++, j += 4) output[i] =((UINT4)input[j]) |(((UINT4)input[j+1]) << 8) | (((UINT4)input[j+2]) << 16) |(((UINT4)input[j+3]) << 24); } // Note: Replace "for loop" with standard memset if possible. static void MD5_memset(POINTER output, int value, unsigned int len) { unsigned int i; for (i = 0; i < len; i++) ((char *)output)[i] =(char)value; } // Note: Replace "for loop" with standard memcpy if possible. static void MD5_memcpy(POINTER output,POINTER input,unsigned int len) { unsigned int i; for (i = 0; i < len; i++) output[i] = input[i]; } void qtMD5(const TQByteArray &src, unsigned char *digest) { MD5_CTX context; MD5Init(&context); MD5Update(&context, (unsigned char *) src.data(), src.size()); MD5Final(digest, &context); } TQString qtMD5(const TQByteArray &src) { unsigned char digest[16]; qtMD5(src, digest); TQString output, tmp; for (int i = 0; i < 16; ++i) output += tmp.sprintf("%02x", digest[i]); return output; }