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Key.cpp
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Key.cpp
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#include "Key.h"
#include "BigInt.h"
#include "PrimeGen.h"
#include "globalData.h"
#include <iostream>
#include <ctime>
#include <string>
#include <stdlib.h>
#include "utils.h"
using namespace std;
void Key::generate(int digNum) {
this->digNum = digNum;
srand((unsigned)time(NULL));
BigInt p(GeneratePrime(digNum));
BigInt q(GeneratePrime(digNum));
LOGLN("Key: 密钥生成");
BigInt t = (p - 1) * (q - 1);
BigInt x, y, temp;
while (1)
{
e.Random(digNum);
//产生与T互质的E
while (!(BigInt::Gcd(e,t) == 1))
e.Random(digNum);
temp = BigInt::ExtendedGcd(e, t, x, y);
temp = (e * x) % t;
if (temp == 1)
break;
}
LOGLN(" 公钥e: " << e);
n = p * q;
LOGLN(" 公钥n: " << n);
d = x;
LOGLN(" 私钥d: " << d);
}
void Key::getPublicKey(BigInt& N, BigInt& E) const
{
N = this->n;
E = this->e;
}
void Key::getPrivateKey(BigInt& N, BigInt& D) const
{
N = this->n;
D = this->d;
}