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Add unit test for RSA cipher (#3664)

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This commit is contained in:
Alexandre Velloso
2022-10-26 02:10:27 +01:00
committed by GitHub
parent f8897f166d
commit 8c6ed9c240
2 changed files with 30 additions and 23 deletions
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29
src/main/java/com/thealgorithms/ciphers/RSA.java
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@ -2,32 +2,15 @@ package com.thealgorithms.ciphers;
import java.math.BigInteger;
import java.security.SecureRandom;
import javax.swing.*;
/**
* @author Nguyen Duy Tiep on 23-Oct-17.
*/
public final class RSA {
public class RSA {
public static void main(String[] args) {
RSA rsa = new RSA(1024);
String text1 = JOptionPane.showInputDialog(
"Enter a message to encrypt :"
);
String ciphertext = rsa.encrypt(text1);
JOptionPane.showMessageDialog(
null,
"Your encrypted message : " + ciphertext
);
JOptionPane.showMessageDialog(
null,
"Your message after decrypt : " + rsa.decrypt(ciphertext)
);
}
private BigInteger modulus, privateKey, publicKey;
private BigInteger modulus;
private BigInteger privateKey;
private BigInteger publicKey;
public RSA(int bits) {
generateKeys(bits);
@ -77,10 +60,10 @@ public final class RSA {
BigInteger m =
(p.subtract(BigInteger.ONE)).multiply(q.subtract(BigInteger.ONE));
publicKey = new BigInteger("3");
publicKey = BigInteger.valueOf(3L);
while (m.gcd(publicKey).intValue() > 1) {
publicKey = publicKey.add(new BigInteger("2"));
publicKey = publicKey.add(BigInteger.valueOf(2L));
}
privateKey = publicKey.modInverse(m);