#include <stdio.h>
#include <openssl/rand.h>
#include <openssl/rc4.h>
#include <openssl/md5.h>
#include <openssl/evp.h>
#include <openssl/hmac.h>
#include "crypt.h"

#define DEBUG

#ifdef DEBUG
#ifdef _WIN32
 #define DBG
#else
 #define DBG(fmts,args...)      do { fprintf(stderr,fmts,##args); } while(0)
#endif
#else
 #define DBG
#endif

#ifdef DEBUG
static char *hexstr(unsigned char *buf,int len)
{
	const char *set = "0123456789ABCDEF";
	static char str[1024],*tmp;
	unsigned char *end;

	if (len > 1024) 
		len = 1024;

	end = buf + len;
	tmp = &str[0];

	while (buf < end)
	{
		*tmp++ = set[ (*buf) >> 4 ];
		*tmp++ = set[ (*buf) & 0xF ];
		buf ++;
	}
	*tmp = '';

	return str;
}
#endif

static DH *get_dh4096(void)
{
	static unsigned char dh4096_p[] = {
		0xFA,0x14,0x72,0x52,0xC1,0x4D,0xE1,0x5A,0x49,0xD4,0xEF,0x09,
		0x2D,0xC0,0xA8,0xFD,0x55,0xAB,0xD7,0xD9,0x37,0x04,0x28,0x09,
		0xE2,0xE9,0x3E,0x77,0xE2,0xA1,0x7A,0x18,0xDD,0x46,0xA3,0x43,
		0x37,0x23,0x90,0x97,0xF3,0x0E,0xC9,0x03,0x50,0x7D,0x65,0xCF,
		0x78,0x62,0xA6,0x3A,0x62,0x22,0x83,0xA1,0x2F,0xFE,0x79,0xBA,
		0x35,0xFF,0x59,0xD8,0x1D,0x61,0xDD,0x1E,0x21,0x13,0x17,0xFE,
		0xCD,0x38,0x87,0x9E,0xF5,0x4F,0x79,0x10,0x61,0x8D,0xD4,0x22,
		0xF3,0x5A,0xED,0x5D,0xEA,0x21,0xE9,0x33,0x6B,0x48,0x12,0x0A,
		0x20,0x77,0xD4,0x25,0x60,0x61,0xDE,0xF6,0xB4,0x4F,0x1C,0x63,
		0x40,0x8B,0x3A,0x21,0x93,0x8B,0x79,0x53,0x51,0x2C,0xCA,0xB3,
		0x7B,0x29,0x56,0xA8,0xC7,0xF8,0xF4,0x7B,0x08,0x5E,0xA6,0xDC,
		0xA2,0x45,0x12,0x56,0xDD,0x41,0x92,0xF2,0xDD,0x5B,0x8F,0x23,
		0xF0,0xF3,0xEF,0xE4,0x3B,0x0A,0x44,0xDD,0xED,0x96,0x84,0xF1,
		0xA8,0x32,0x46,0xA3,0xDB,0x4A,0xBE,0x3D,0x45,0xBA,0x4E,0xF8,
		0x03,0xE5,0xDD,0x6B,0x59,0x0D,0x84,0x1E,0xCA,0x16,0x5A,0x8C,
		0xC8,0xDF,0x7C,0x54,0x44,0xC4,0x27,0xA7,0x3B,0x2A,0x97,0xCE,
		0xA3,0x7D,0x26,0x9C,0xAD,0xF4,0xC2,0xAC,0x37,0x4B,0xC3,0xAD,
		0x68,0x84,0x7F,0x99,0xA6,0x17,0xEF,0x6B,0x46,0x3A,0x7A,0x36,
		0x7A,0x11,0x43,0x92,0xAD,0xE9,0x9C,0xFB,0x44,0x6C,0x3D,0x82,
		0x49,0xCC,0x5C,0x6A,0x52,0x42,0xF8,0x42,0xFB,0x44,0xF9,0x39,
		0x73,0xFB,0x60,0x79,0x3B,0xC2,0x9E,0x0B,0xDC,0xD4,0xA6,0x67,
		0xF7,0x66,0x3F,0xFC,0x42,0x3B,0x1B,0xDB,0x4F,0x66,0xDC,0xA5,
		0x8F,0x66,0xF9,0xEA,0xC1,0xED,0x31,0xFB,0x48,0xA1,0x82,0x7D,
		0xF8,0xE0,0xCC,0xB1,0xC7,0x03,0xE4,0xF8,0xB3,0xFE,0xB7,0xA3,
		0x13,0x73,0xA6,0x7B,0xC1,0x0E,0x39,0xC7,0x94,0x48,0x26,0x00,
		0x85,0x79,0xFC,0x6F,0x7A,0xAF,0xC5,0x52,0x35,0x75,0xD7,0x75,
		0xA4,0x40,0xFA,0x14,0x74,0x61,0x16,0xF2,0xEB,0x67,0x11,0x6F,
		0x04,0x43,0x3D,0x11,0x14,0x4C,0xA7,0x94,0x2A,0x39,0xA1,0xC9,
		0x90,0xCF,0x83,0xC6,0xFF,0x02,0x8F,0xA3,0x2A,0xAC,0x26,0xDF,
		0x0B,0x8B,0xBE,0x64,0x4A,0xF1,0xA1,0xDC,0xEE,0xBA,0xC8,0x03,
		0x82,0xF6,0x62,0x2C,0x5D,0xB6,0xBB,0x13,0x19,0x6E,0x86,0xC5,
		0x5B,0x2B,0x5E,0x3A,0xF3,0xB3,0x28,0x6B,0x70,0x71,0x3A,0x8E,
		0xFF,0x5C,0x15,0xE6,0x02,0xA4,0xCE,0xED,0x59,0x56,0xCC,0x15,
		0x51,0x07,0x79,0x1A,0x0F,0x25,0x26,0x27,0x30,0xA9,0x15,0xB2,
		0xC8,0xD4,0x5C,0xCC,0x30,0xE8,0x1B,0xD8,0xD5,0x0F,0x19,0xA8,
		0x80,0xA4,0xC7,0x01,0xAA,0x8B,0xBA,0x53,0xBB,0x47,0xC2,0x1F,
		0x6B,0x54,0xB0,0x