libupnpp / Code / Diff of /libupnpp/md5.cxx

Diff of /libupnpp/md5.cxx [a42160] .. [211598]

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...
 */

static void
Encode (unsigned char *output, md5uint32 *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 (md5uint32). Assumes len is
 * a multiple of 4.
 */

static void
Decode (md5uint32 *output, const unsigned char *input, unsigned int len)
{
    unsigned int i, j;

    for (i = 0, j = 0; j < len; i++, j += 4)
        output[i] = ((md5uint32)input[j]) | (((md5uint32)input[j+1]) << 8) |
                    (((md5uint32)input[j+2]) << 16) | (((md5uint32)input[j+3]) << 24);
}
#endif /* i386 */

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. */
#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
...

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.
 */

void
MD5Update (MD5_CTX *context, const 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] += ((md5uint32)inputLen << 3))
            < ((md5uint32)inputLen << 3))
        context->count[1]++;
    context->count[1] += ((md5uint32)inputLen >> 29);

    partLen = 64 - index;

    /* Transform as many times as possible. */
    if (inputLen >= partLen) {
        memcpy((void *)&context->buffer[index], (const void *)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 */
    memcpy ((void *)&context->buffer[index], (const void *)&input[i],
            inputLen-i);
}

/*
 * MD5 padding. Adds padding followed by original length.
 */

void
MD5Pad (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);
}

/*
 * MD5 finalization. Ends an MD5 message-digest operation, writing the
 * the message digest and zeroizing the context.
 */

void
MD5Final (unsigned char digest[16],MD5_CTX *context)
{
    /* Do padding. */
    MD5Pad (context);

    /* Store state in digest */
    Encode (digest, context->state, 16);

    /* Zeroize sensitive information. */
    memset ((void *)context, 0, sizeof (*context));
}

/* MD5 basic transformation. Transforms state based on block. */

static void
MD5Transform (md5uint32 state[4], const unsigned char block[64])
{
    md5uint32 a = state[0], b = state[1], c = state[2], d = state[3], x[16];

    Decode (x, block, 64);

    /* Round 1 */
#define S11 7
#define S12 12
#define S13 17
#define S14 22
    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 */
#define S21 5
#define S22 9
#define S23 14
#define S24 20
    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 */
#define S31 4
#define S32 11
#define S33 16
#define S34 23
    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 */
#define S41 6
#define S42 10
#define S43 15
#define S44 21
    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. */
    memset ((void *)x, 0, sizeof (x));
}

/*************** Convenience  / utilities */
void MD5Final(string &digest, MD5_CTX *context)
{
...

string& MD5String(const string& data, string& digest)
{
    MD5_CTX ctx;
    MD5Init(&ctx);
    MD5Update(&ctx, (const unsigned char*)data.c_str(),
              (unsigned int)data.length());
    MD5Final(digest, &ctx);
    return digest;
}

string& MD5HexPrint(const string& digest, string &out)
...
    out.erase();
    out.reserve(33);
    static const char hex[]="0123456789abcdef";
    const unsigned char *hash = (const unsigned char *)digest.c_str();
    for (int i = 0; i < 16; i++) {
        out.append(1, hex[hash[i] >> 4]);
        out.append(1, hex[hash[i] & 0x0f]);
    }
    return out;
}
string& MD5HexScan(const string& xdigest, string& digest)
{
    digest.erase();
    if (xdigest.length() != 32) {
        return digest;
    }
    for (unsigned int i = 0; i < 16; i++) {
        unsigned int val;
        if (sscanf(xdigest.c_str() + 2*i, "%2x", &val) != 1) {
            digest.erase();
            return digest;
        }
        digest.append(1, (unsigned char)val);
    }
    return digest;
}

}

	a/libupnpp/md5.cxx		b/libupnpp/md5.cxx
	...		...
54	*/	54	*/
55		55
56	static void	56	static void
57	Encode (unsigned char output, md5uint32 input, unsigned int len)	57	Encode (unsigned char output, md5uint32 input, unsigned int len)
58	{	58	{
59	unsigned int i, j;	59	unsigned int i, j;
60		60
61	for (i = 0, j = 0; j < len; i++, j += 4) {	61	for (i = 0, j = 0; j < len; i++, j += 4) {
62	output[j] = (unsigned char)(input[i] & 0xff);	62	output[j] = (unsigned char)(input[i] & 0xff);
63	output[j+1] = (unsigned char)((input[i] >> 8) & 0xff);	63	output[j+1] = (unsigned char)((input[i] >> 8) & 0xff);
64	output[j+2] = (unsigned char)((input[i] >> 16) & 0xff);	64	output[j+2] = (unsigned char)((input[i] >> 16) & 0xff);
65	output[j+3] = (unsigned char)((input[i] >> 24) & 0xff);	65	output[j+3] = (unsigned char)((input[i] >> 24) & 0xff);
66	}	66	}
67	}	67	}
68		68
69	/*	69	/*
70	* Decodes input (unsigned char) into output (md5uint32). Assumes len is	70	* Decodes input (unsigned char) into output (md5uint32). Assumes len is
71	* a multiple of 4.	71	* a multiple of 4.
72	*/	72	*/
73		73
74	static void	74	static void
75	Decode (md5uint32 output, const unsigned char input, unsigned int len)	75	Decode (md5uint32 output, const unsigned char input, unsigned int len)
76	{	76	{
77	unsigned int i, j;	77	unsigned int i, j;
78		78
79	for (i = 0, j = 0; j < len; i++, j += 4)	79	for (i = 0, j = 0; j < len; i++, j += 4)
80	output[i] = ((md5uint32)input[j]) \| (((md5uint32)input[j+1]) << 8) \|	80	output[i] = ((md5uint32)input[j]) \| (((md5uint32)input[j+1]) << 8) \|
81	(((md5uint32)input[j+2]) << 16) \| (((md5uint32)input[j+3]) << 24);	81	(((md5uint32)input[j+2]) << 16) \| (((md5uint32)input[j+3]) << 24);
82	}	82	}
83	#endif /* i386 */	83	#endif /* i386 */
84		84
85	static unsigned char PADDING[64] = {	85	static unsigned char PADDING[64] = {
86	0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	86	0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
87	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	87	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
88	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0	88	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
89	};	89	};
90		90
91	/* F, G, H and I are basic MD5 functions. */	91	/* F, G, H and I are basic MD5 functions. */
92	#define F(x, y, z) (((x) & (y)) \| ((~x) & (z)))	92	#define F(x, y, z) (((x) & (y)) \| ((~x) & (z)))
93	#define G(x, y, z) (((x) & (z)) \| ((y) & (~z)))	93	#define G(x, y, z) (((x) & (z)) \| ((y) & (~z)))
	...		...
126		126
127	void	127	void
128	MD5Init (MD5_CTX *context)	128	MD5Init (MD5_CTX *context)
129	{	129	{
130		130
131	context->count[0] = context->count[1] = 0;	131	context->count[0] = context->count[1] = 0;
132		132
133	/* Load magic initialization constants. */	133	/* Load magic initialization constants. */
134	context->state[0] = 0x67452301;	134	context->state[0] = 0x67452301;
135	context->state[1] = 0xefcdab89;	135	context->state[1] = 0xefcdab89;
136	context->state[2] = 0x98badcfe;	136	context->state[2] = 0x98badcfe;
137	context->state[3] = 0x10325476;	137	context->state[3] = 0x10325476;
138	}	138	}
139		139
140	/*	140	/*
141	* MD5 block update operation. Continues an MD5 message-digest	141	* MD5 block update operation. Continues an MD5 message-digest
142	* operation, processing another message block, and updating the	142	* operation, processing another message block, and updating the
143	* context.	143	* context.
144	*/	144	*/
145		145
146	void	146	void
147	MD5Update (MD5_CTX context, const unsigned char input, unsigned int inputLen)	147	MD5Update (MD5_CTX context, const unsigned char input, unsigned int inputLen)
148	{	148	{
149	unsigned int i, index, partLen;	149	unsigned int i, index, partLen;
150		150
151	/* Compute number of bytes mod 64 */	151	/* Compute number of bytes mod 64 */
152	index = (unsigned int)((context->count[0] >> 3) & 0x3F);	152	index = (unsigned int)((context->count[0] >> 3) & 0x3F);
153		153
154	/* Update number of bits */	154	/* Update number of bits */
155	if ((context->count[0] += ((md5uint32)inputLen << 3))	155	if ((context->count[0] += ((md5uint32)inputLen << 3))
156	< ((md5uint32)inputLen << 3))	156	< ((md5uint32)inputLen << 3))
157	context->count[1]++;	157	context->count[1]++;
158	context->count[1] += ((md5uint32)inputLen >> 29);	158	context->count[1] += ((md5uint32)inputLen >> 29);
159		159
160	partLen = 64 - index;	160	partLen = 64 - index;
161		161
162	/* Transform as many times as possible. */	162	/* Transform as many times as possible. */
163	if (inputLen >= partLen) {	163	if (inputLen >= partLen) {
164	memcpy((void )&context->buffer[index], (const void )input,	164	memcpy((void )&context->buffer[index], (const void )input,
165	partLen);	165	partLen);
166	MD5Transform (context->state, context->buffer);	166	MD5Transform (context->state, context->buffer);
167		167
168	for (i = partLen; i + 63 < inputLen; i += 64)	168	for (i = partLen; i + 63 < inputLen; i += 64)
169	MD5Transform (context->state, &input[i]);	169	MD5Transform (context->state, &input[i]);
170		170
171	index = 0;	171	index = 0;
172	}	172	}
173	else	173	else
174	i = 0;	174	i = 0;
175		175
176	/* Buffer remaining input */	176	/* Buffer remaining input */
177	memcpy ((void )&context->buffer[index], (const void )&input[i],	177	memcpy ((void )&context->buffer[index], (const void )&input[i],
178	inputLen-i);	178	inputLen-i);
179	}	179	}
180		180
181	/*	181	/*
182	* MD5 padding. Adds padding followed by original length.	182	* MD5 padding. Adds padding followed by original length.
183	*/	183	*/
184		184
185	void	185	void
186	MD5Pad (MD5_CTX *context)	186	MD5Pad (MD5_CTX *context)
187	{	187	{
188	unsigned char bits[8];	188	unsigned char bits[8];
189	unsigned int index, padLen;	189	unsigned int index, padLen;
190		190
191	/* Save number of bits */	191	/* Save number of bits */
192	Encode (bits, context->count, 8);	192	Encode (bits, context->count, 8);
193		193
194	/* Pad out to 56 mod 64. */	194	/* Pad out to 56 mod 64. */
195	index = (unsigned int)((context->count[0] >> 3) & 0x3f);	195	index = (unsigned int)((context->count[0] >> 3) & 0x3f);
196	padLen = (index < 56) ? (56 - index) : (120 - index);	196	padLen = (index < 56) ? (56 - index) : (120 - index);
197	MD5Update (context, PADDING, padLen);	197	MD5Update (context, PADDING, padLen);
198		198
199	/* Append length (before padding) */	199	/* Append length (before padding) */
200	MD5Update (context, bits, 8);	200	MD5Update (context, bits, 8);
201	}	201	}
202		202
203	/*	203	/*
204	* MD5 finalization. Ends an MD5 message-digest operation, writing the	204	* MD5 finalization. Ends an MD5 message-digest operation, writing the
205	* the message digest and zeroizing the context.	205	* the message digest and zeroizing the context.
206	*/	206	*/
207		207
208	void	208	void
209	MD5Final (unsigned char digest[16],MD5_CTX *context)	209	MD5Final (unsigned char digest[16],MD5_CTX *context)
210	{	210	{
211	/* Do padding. */	211	/* Do padding. */
212	MD5Pad (context);	212	MD5Pad (context);
213		213
214	/* Store state in digest */	214	/* Store state in digest */
215	Encode (digest, context->state, 16);	215	Encode (digest, context->state, 16);
216		216
217	/* Zeroize sensitive information. */	217	/* Zeroize sensitive information. */
218	memset ((void )context, 0, sizeof (context));	218	memset ((void )context, 0, sizeof (context));
219	}	219	}
220		220
221	/* MD5 basic transformation. Transforms state based on block. */	221	/* MD5 basic transformation. Transforms state based on block. */
222		222
223	static void	223	static void
224	MD5Transform (md5uint32 state[4], const unsigned char block[64])	224	MD5Transform (md5uint32 state[4], const unsigned char block[64])
225	{	225	{
226	md5uint32 a = state[0], b = state[1], c = state[2], d = state[3], x[16];	226	md5uint32 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
227		227
228	Decode (x, block, 64);	228	Decode (x, block, 64);
229		229
230	/* Round 1 */	230	/* Round 1 */
231	#define S11 7	231	#define S11 7
232	#define S12 12	232	#define S12 12
233	#define S13 17	233	#define S13 17
234	#define S14 22	234	#define S14 22
235	FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */	235	FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
236	FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */	236	FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
237	FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */	237	FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
238	FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */	238	FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
239	FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */	239	FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
240	FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */	240	FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
241	FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */	241	FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
242	FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */	242	FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
243	FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */	243	FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
244	FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */	244	FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
245	FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */	245	FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
246	FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */	246	FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
247	FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */	247	FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
248	FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */	248	FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
249	FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */	249	FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
250	FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */	250	FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
251		251
252	/* Round 2 */	252	/* Round 2 */
253	#define S21 5	253	#define S21 5
254	#define S22 9	254	#define S22 9
255	#define S23 14	255	#define S23 14
256	#define S24 20	256	#define S24 20
257	GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */	257	GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
258	GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */	258	GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
259	GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */	259	GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
260	GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */	260	GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
261	GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */	261	GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
262	GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */	262	GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */
263	GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */	263	GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
264	GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */	264	GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
265	GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */	265	GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
266	GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */	266	GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
267	GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */	267	GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
268	GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */	268	GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
269	GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */	269	GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
270	GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */	270	GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
271	GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */	271	GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
272	GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */	272	GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
273		273
274	/* Round 3 */	274	/* Round 3 */
275	#define S31 4	275	#define S31 4
276	#define S32 11	276	#define S32 11
277	#define S33 16	277	#define S33 16
278	#define S34 23	278	#define S34 23
279	HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */	279	HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
280	HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */	280	HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
281	HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */	281	HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
282	HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */	282	HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
283	HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */	283	HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
284	HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */	284	HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
285	HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */	285	HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
286	HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */	286	HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
287	HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */	287	HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
288	HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */	288	HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
289	HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */	289	HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
290	HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */	290	HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */
291	HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */	291	HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
292	HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */	292	HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
293	HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */	293	HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
294	HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */	294	HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
295		295
296	/* Round 4 */	296	/* Round 4 */
297	#define S41 6	297	#define S41 6
298	#define S42 10	298	#define S42 10
299	#define S43 15	299	#define S43 15
300	#define S44 21	300	#define S44 21
301	II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */	301	II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
302	II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */	302	II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
303	II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */	303	II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
304	II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */	304	II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
305	II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */	305	II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
306	II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */	306	II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
307	II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */	307	II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
308	II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */	308	II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
309	II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */	309	II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
310	II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */	310	II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
311	II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */	311	II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
312	II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */	312	II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
313	II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */	313	II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
314	II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */	314	II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
315	II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */	315	II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
316	II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */	316	II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
317		317
318	state[0] += a;	318	state[0] += a;
319	state[1] += b;	319	state[1] += b;
320	state[2] += c;	320	state[2] += c;
321	state[3] += d;	321	state[3] += d;
322		322
323	/* Zeroize sensitive information. */	323	/* Zeroize sensitive information. */
324	memset ((void *)x, 0, sizeof (x));	324	memset ((void *)x, 0, sizeof (x));
325	}	325	}
326		326
327	/*************** Convenience / utilities */	327	/*************** Convenience / utilities */
328	void MD5Final(string &digest, MD5_CTX *context)	328	void MD5Final(string &digest, MD5_CTX *context)
329	{	329	{
	...		...
334		334
335	string& MD5String(const string& data, string& digest)	335	string& MD5String(const string& data, string& digest)
336	{	336	{
337	MD5_CTX ctx;	337	MD5_CTX ctx;
338	MD5Init(&ctx);	338	MD5Init(&ctx);
339	MD5Update(&ctx, (const unsigned char*)data.c_str(), data.length());	339	MD5Update(&ctx, (const unsigned char*)data.c_str(),
		340	(unsigned int)data.length());
340	MD5Final(digest, &ctx);	341	MD5Final(digest, &ctx);
341	return digest;	342	return digest;
342	}	343	}
343		344
344	string& MD5HexPrint(const string& digest, string &out)	345	string& MD5HexPrint(const string& digest, string &out)
	...		...
346	out.erase();	347	out.erase();
347	out.reserve(33);	348	out.reserve(33);
348	static const char hex[]="0123456789abcdef";	349	static const char hex[]="0123456789abcdef";
349	const unsigned char hash = (const unsigned char )digest.c_str();	350	const unsigned char hash = (const unsigned char )digest.c_str();
350	for (int i = 0; i < 16; i++) {	351	for (int i = 0; i < 16; i++) {
351	out.append(1, hex[hash[i] >> 4]);	352	out.append(1, hex[hash[i] >> 4]);
352	out.append(1, hex[hash[i] & 0x0f]);	353	out.append(1, hex[hash[i] & 0x0f]);
353	}	354	}
354	return out;	355	return out;
355	}	356	}
356	string& MD5HexScan(const string& xdigest, string& digest)	357	string& MD5HexScan(const string& xdigest, string& digest)
357	{	358	{
358	digest.erase();	359	digest.erase();
359	if (xdigest.length() != 32) {	360	if (xdigest.length() != 32) {
360	return digest;	361	return digest;
361	}	362	}
362	for (unsigned int i = 0; i < 16; i++) {	363	for (unsigned int i = 0; i < 16; i++) {
363	unsigned int val;	364	unsigned int val;
364	if (sscanf(xdigest.c_str() + 2*i, "%2x", &val) != 1) {	365	if (sscanf(xdigest.c_str() + 2*i, "%2x", &val) != 1) {
365	digest.erase();	366	digest.erase();
366	return digest;	367	return digest;
367	}	368	}
368	digest.append(1, (unsigned char)val);	369	digest.append(1, (unsigned char)val);
369	}	370	}
370	return digest;	371	return digest;
371	}	372	}
372		373
373	}	374	}