A Simple Blowfish Encryption / Decryption using Java
This is a simple encryption using Blowfish Algorithm that i use to encrypt several properties on my application. On this example im using username appended with password as salt to encrypt password variables.
package com.edw.main;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class BlowfishTest {
public static void main(String[] args) throws Exception {
encrypt("edwin","password");
decrypt("6VsVtA/nhHKUZuWWmod/BQ==");
}
private static void encrypt(String username, String password) throws Exception {
byte[] keyData = (username+password).getBytes();
SecretKeySpec secretKeySpec = new SecretKeySpec(keyData, "Blowfish");
Cipher cipher = Cipher.getInstance("Blowfish");
cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
byte[] hasil = cipher.doFinal(password.getBytes());
System.out.println(new BASE64Encoder().encode(hasil));
}
private static void decrypt(String string) throws Exception {
byte[] keyData = ("edwin"+"password").getBytes();
SecretKeySpec secretKeySpec = new SecretKeySpec(keyData, "Blowfish");
Cipher cipher = Cipher.getInstance("Blowfish");
cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
byte[] hasil = cipher.doFinal(new BASE64Decoder().decodeBuffer(string));
System.out.println(new String(hasil));
}
}
3 Comments
Budi Oktaviyan
about 7 years agoJust another way bro :D
Replypublic class BlowfishTest { public static final String BLOWFISH = "Blowfish"; public static String x; public static void main(String[] args) throws Exception { encrypt("geriii","p@ssw0rd"); decrypt("HDXiT9dQeGXUsX8hoWNH5w=="); } public static void encrypt(String username, String password) throws Exception { x = new StringBuilder(username).append(password).toString(); byte[] keyData = (x).getBytes(); SecretKeySpec secretKeySpec = new SecretKeySpec(keyData, BLOWFISH); Cipher cipher = Cipher.getInstance(BLOWFISH); cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec); byte[] result = cipher.doFinal(password.getBytes()); System.out.println(new BASE64Encoder().encode(result)); } public static void decrypt(String param) throws Exception { byte[] keyData = (x).getBytes(); SecretKeySpec secretKeySpec = new SecretKeySpec(keyData, BLOWFISH); Cipher cipher = Cipher.getInstance(BLOWFISH); cipher.init(Cipher.DECRYPT_MODE, secretKeySpec); byte[] result = cipher.doFinal(new BASE64Decoder().decodeBuffer(param)); System.out.println(new String(result)); } }edwin
about 7 years agothank you bek :p
marcelo.lima.2011@gmail.com
about 3 years agoI'm not Java programmer, and I'm trying to make this implementation. I know it's been four years, but I can not help noticing that the decript function requires the encrypted text size (which will not have) ..
Reply