簡易版本的RSA系統中,假設質數p=13, q=17
n=?
phi(n)=?
假設公鑰指數e=5,私鑰指數d=?
明文代碼m=100,密文c=?
提示:可用Java中的BigInteger 中的方法modInverse, modPow求d與c的解,或者是用筆算。參閱http://anwendeng.blogspot.tw/2013/10/java1024-bit-rsa.html
herrDeng網內搜尋
自訂搜尋
Ads
訂閱:
張貼留言 (Atom)
熱門文章
-
用 while loop 算 s=3*3+4*4+....88*88
-
33, 45, 87, 99, 27 算平均
-
輸出課表代碼矩陣 Hint: 2-D array, double-for loop
-
計算你上學期加權平均
-
問int怎麼存-689這個數字。 int用4個bytes。 答案請用16進位表達。
-
產生10個0~99的亂數存在a[10] 中
-
連續複利
-
data structure 期中考乙
52 則留言:
package go;
import java.math.BigInteger;
import java.security.SecureRandom;
public class CAI {
public static void main(String[] args)throws Exception
{
System.out.println("My name is RAMBO!");
SecureRandom rnd=new SecureRandom();
BigInteger p,q,n,phiN,e,d;
int b=512, u=128;
p=new BigInteger("13");
System.out.println("p="+p);
q=new BigInteger("17");
System.out.println("q="+q);
n=p.multiply(q);
System.out.println("n="+n);
BigInteger one=new BigInteger("1");
phiN=p.subtract(one).multiply(q.subtract(one));
System.out.println("phiN="+phiN);
e=new BigInteger("5");
System.out.println("e="+e);
d=e.modInverse(phiN);
System.out.println("d="+d);
BigInteger m=new BigInteger("100");
System.out.println("m="+m);
BigInteger c=m.modPow(e, n);
System.out.println("c="+c);
BigInteger m1=c.modPow(d, n);
System.out.println("m1="+m1);
System.out.println(m.equals(m1));
}
}
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
d=77
c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
b10041032 林佳雯
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
N=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
d=77
c=172
n=221
phi(n)=192
d=77
c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
N=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
package go;
import java.math.BigInteger;
import java.security.SecureRandom;
public class CAI {
public static void main(String[] args)throws Exception
{
System.out.println("My name is RAMBO!");
SecureRandom rnd=new SecureRandom();
BigInteger p,q,n,phiN,e,d;
int b=512, u=128;
p=new BigInteger("13");
System.out.println("p="+p);
q=new BigInteger("17");
System.out.println("q="+q);
n=p.multiply(q);
System.out.println("n="+n);
BigInteger one=new BigInteger("1");
phiN=p.subtract(one).multiply(q.subtract(one));
System.out.println("phiN="+phiN);
e=new BigInteger("5");
System.out.println("e="+e);
d=e.modInverse(phiN);
System.out.println("d="+d);
BigInteger m=new BigInteger("100");
System.out.println("m="+m);
BigInteger c=m.modPow(e, n);
System.out.println("c="+c);
BigInteger m1=c.modPow(d, n);
System.out.println("m1="+m1);
System.out.println(m.equals(m1));
}
}
package go;
import java.math.BigInteger;
import java.security.SecureRandom;
public class CAI {
public static void main(String[] args)throws Exception
{
System.out.println("My name is RAMBO!");
SecureRandom rnd=new SecureRandom();
BigInteger p,q,n,phiN,e,d;
int b=512, u=128;
p=new BigInteger("13");
System.out.println("p="+p);
q=new BigInteger("17");
System.out.println("q="+q);
n=p.multiply(q);
System.out.println("n="+n);
BigInteger one=new BigInteger("1");
phiN=p.subtract(one).multiply(q.subtract(one));
System.out.println("phiN="+phiN);
e=new BigInteger("5");
System.out.println("e="+e);
d=e.modInverse(phiN);
System.out.println("d="+d);
BigInteger m=new BigInteger("100");
System.out.println("m="+m);
BigInteger c=m.modPow(e, n);
System.out.println("c="+c);
BigInteger m1=c.modPow(d, n);
System.out.println("m1="+m1);
System.out.println(m.equals(m1));
}
}
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
n=221
phi(n)=192
私鑰指數d=77
密文c=172
package go;
import java.math.BigInteger;
import java.security.SecureRandom;
public class CAI {
public static void main(String[] args)throws Exception
{
System.out.println("My name is RAMBO!");
SecureRandom rnd=new SecureRandom();
BigInteger p,q,n,phiN,e,d;
int b=512, u=128;
p=new BigInteger("13");
System.out.println("p="+p);
q=new BigInteger("17");
System.out.println("q="+q);
n=p.multiply(q);
System.out.println("n="+n);
BigInteger one=new BigInteger("1");
phiN=p.subtract(one).multiply(q.subtract(one));
System.out.println("phiN="+phiN);
e=new BigInteger("5");
System.out.println("e="+e);
d=e.modInverse(phiN);
System.out.println("d="+d);
BigInteger m=new BigInteger("100");
System.out.println("m="+m);
BigInteger c=m.modPow(e, n);
System.out.println("c="+c);
BigInteger m1=c.modPow(d, n);
System.out.println("m1="+m1);
System.out.println(m.equals(m1));
}
}
package go;
import java.math.BigInteger;
import java.security.SecureRandom;
public class CA {
public static void main(String[] args)throws Exception
{
System.out.println("My name is RAMBO!");
SecureRandom rnd=new SecureRandom();
BigInteger p,q,n,phiN,e,d;
int b=512, u=128;
p=new BigInteger("13");
System.out.println("p="+p);
q=new BigInteger("17");
System.out.println("q="+q);
n=p.multiply(q);
System.out.println("n="+n);
BigInteger one=new BigInteger("1");
phiN=p.subtract(one).multiply(q.subtract(one));
System.out.println("phiN="+phiN);
e=new BigInteger("5");
System.out.println("e="+e);
d=e.modInverse(phiN);
System.out.println("d="+d);
BigInteger m=new BigInteger("100");
System.out.println("m="+m);
BigInteger c=m.modPow(e, n);
System.out.println("c="+c);
BigInteger n1=c.modPow(d, n);
System.out.println("n1="+n1);
System.out.println(m.equals(n1));
}
}
package go;
import java.math.BigInteger;
import java.security.SecureRandom;
public class CKI {
public static void main(String[] args)throws Exception
{
System.out.println("My name is RAMBO!");
SecureRandom rnd=new SecureRandom();
BigInteger p,q,n,phiN,e,d;
int b=512, u=128;
p=new BigInteger("13");
System.out.println("p="+p);
q=new BigInteger("17");
System.out.println("q="+q);
n=p.multiply(q);
System.out.println("n="+n);
BigInteger one=new BigInteger("1");
phiN=p.subtract(one).multiply(q.subtract(one));
System.out.println("phiN="+phiN);
e=new BigInteger("5");
System.out.println("e="+e);
d=e.modInverse(phiN);
System.out.println("d="+d);
BigInteger m=new BigInteger("100");
System.out.println("m="+m);
BigInteger c=m.modPow(e, n);
System.out.println("c="+c);
BigInteger K=c.modPow(d, n);
System.out.println("K="+K);
System.out.println(m.equals(K));
}
}
n=221
phi(n)=192
d=77
c=172
n = 221
phi(n) = 192
私鑰指數d = 77
密文c = 172
張貼留言