algorithm/Java
1
0
Fork 0
mirror of https://github.com/TheAlgorithms/Java.git synced 2025-07-10 13:39:08 +08:00
Code Issues Packages Projects Releases Wiki Activity

Add unit test for RSA cipher (#3664)

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

29
src/main/java/com/thealgorithms/ciphers/RSA.java
View File

@ -2,32 +2,15 @@ package com.thealgorithms.ciphers;
import java.math.BigInteger; import java.math.BigInteger;
import java.security.SecureRandom; import java.security.SecureRandom;
import javax.swing.*;
/** /**
* @author Nguyen Duy Tiep on 23-Oct-17. * @author Nguyen Duy Tiep on 23-Oct-17.
*/ */
public final class RSA { public class RSA {
public static void main(String[] args) { private BigInteger modulus;
RSA rsa = new RSA(1024); private BigInteger privateKey;
String text1 = JOptionPane.showInputDialog( private BigInteger publicKey;
"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;
public RSA(int bits) { public RSA(int bits) {
generateKeys(bits); generateKeys(bits);
@ -77,10 +60,10 @@ public final class RSA {
BigInteger m = BigInteger m =
(p.subtract(BigInteger.ONE)).multiply(q.subtract(BigInteger.ONE)); (p.subtract(BigInteger.ONE)).multiply(q.subtract(BigInteger.ONE));
publicKey = new BigInteger("3"); publicKey = BigInteger.valueOf(3L);
while (m.gcd(publicKey).intValue() > 1) { while (m.gcd(publicKey).intValue() > 1) {
publicKey = publicKey.add(new BigInteger("2")); publicKey = publicKey.add(BigInteger.valueOf(2L));
} }
privateKey = publicKey.modInverse(m); privateKey = publicKey.modInverse(m);

24
src/test/java/com/thealgorithms/ciphers/RSATest.java Normal file
View File

@ -0,0 +1,24 @@
package com.thealgorithms.ciphers;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
class RSATest {
RSA rsa = new RSA(1024);
@Test
void testRSA() {
// given
String textToEncrypt = "Such secure";
// when
String cipherText = rsa.encrypt(textToEncrypt);
String decryptedText = rsa.decrypt(cipherText);
// then
assertEquals("Such secure", decryptedText);
}
}