utility

How to Convert from ASCII to EBCDIC Using Java

By / 4 April 2013 / Java, Programming / , , ,

Today I had a specific requirement to connect to a corebanking application using ISO8583. Their requirement is that every message needs to be on EBCDIC format, that’s why i need to create a class to do converting from ASCII into EBCDIC format.

After sometime googling, i found a class that i hope would fit with my requirement. 

public class Converter {

    private static byte[] ASCII2EBCDIC = new byte[256];

    static {
        ASCII2EBCDIC[0x00] = (byte) 0x00;
        ASCII2EBCDIC[0x01] = (byte) 0x01;
        ASCII2EBCDIC[0x02] = (byte) 0x02;
        ASCII2EBCDIC[0x03] = (byte) 0x03;
        ASCII2EBCDIC[0x04] = (byte) 0x37;
        ASCII2EBCDIC[0x05] = (byte) 0x2D;
        ASCII2EBCDIC[0x06] = (byte) 0x2E;
        ASCII2EBCDIC[0x07] = (byte) 0x2F;
        ASCII2EBCDIC[0x08] = (byte) 0x16;
        ASCII2EBCDIC[0x09] = (byte) 0x05;
        ASCII2EBCDIC[0x0A] = (byte) 0x25;
        ASCII2EBCDIC[0x0B] = (byte) 0x0B;
        ASCII2EBCDIC[0x0C] = (byte) 0x0C;
        ASCII2EBCDIC[0x0D] = (byte) 0x0D;
        ASCII2EBCDIC[0x0E] = (byte) 0x0E;
        ASCII2EBCDIC[0x0F] = (byte) 0x0F;
        ASCII2EBCDIC[0x10] = (byte) 0x10;
        ASCII2EBCDIC[0x11] = (byte) 0x11;
        ASCII2EBCDIC[0x12] = (byte) 0x12;
        ASCII2EBCDIC[0x13] = (byte) 0x13;
        ASCII2EBCDIC[0x14] = (byte) 0x3C;
        ASCII2EBCDIC[0x15] = (byte) 0x3D;
        ASCII2EBCDIC[0x16] = (byte) 0x32;
        ASCII2EBCDIC[0x17] = (byte) 0x26;
        ASCII2EBCDIC[0x18] = (byte) 0x18;
        ASCII2EBCDIC[0x19] = (byte) 0x19;
        ASCII2EBCDIC[0x1A] = (byte) 0x3F;
        ASCII2EBCDIC[0x1B] = (byte) 0x27;
        ASCII2EBCDIC[0x1C] = (byte) 0x1C;
        ASCII2EBCDIC[0x1D] = (byte) 0x1D;
        ASCII2EBCDIC[0x1E] = (byte) 0x1E;
        ASCII2EBCDIC[0x1F] = (byte) 0x1F;
        ASCII2EBCDIC[0x20] = (byte) 0x40;
        ASCII2EBCDIC[0x21] = (byte) 0x4F;
        ASCII2EBCDIC[0x22] = (byte) 0x7F;
        ASCII2EBCDIC[0x23] = (byte) 0x7B;
        ASCII2EBCDIC[0x24] = (byte) 0x5B;
        ASCII2EBCDIC[0x25] = (byte) 0x6C;
        ASCII2EBCDIC[0x26] = (byte) 0x50;
        ASCII2EBCDIC[0x27] = (byte) 0x7D;
        ASCII2EBCDIC[0x28] = (byte) 0x4D;
        ASCII2EBCDIC[0x29] = (byte) 0x5D;
        ASCII2EBCDIC[0x2A] = (byte) 0x5C;
        ASCII2EBCDIC[0x2B] = (byte) 0x4E;
        ASCII2EBCDIC[0x2C] = (byte) 0x6B;
        ASCII2EBCDIC[0x2D] = (byte) 0x60;
        ASCII2EBCDIC[0x2E] = (byte) 0x4B;
        ASCII2EBCDIC[0x2F] = (byte) 0x61;
        ASCII2EBCDIC[0x30] = (byte) 0xF0;
        ASCII2EBCDIC[0x31] = (byte) 0xF1;
        ASCII2EBCDIC[0x32] = (byte) 0xF2;
        ASCII2EBCDIC[0x33] = (byte) 0xF3;
        ASCII2EBCDIC[0x34] = (byte) 0xF4;
        ASCII2EBCDIC[0x35] = (byte) 0xF5;
        ASCII2EBCDIC[0x36] = (byte) 0xF6;
        ASCII2EBCDIC[0x37] = (byte) 0xF7;
        ASCII2EBCDIC[0x38] = (byte) 0xF8;
        ASCII2EBCDIC[0x39] = (byte) 0xF9;
        ASCII2EBCDIC[0x3A] = (byte) 0x7A;
        ASCII2EBCDIC[0x3B] = (byte) 0x5E;
        ASCII2EBCDIC[0x3C] = (byte) 0x4C;
        ASCII2EBCDIC[0x3D] = (byte) 0x7E;
        ASCII2EBCDIC[0x3E] = (byte) 0x6E;
        ASCII2EBCDIC[0x3F] = (byte) 0x6F;
        ASCII2EBCDIC[0x40] = (byte) 0x7C;
        ASCII2EBCDIC[0x41] = (byte) 0xC1;
        ASCII2EBCDIC[0x42] = (byte) 0xC2;
        ASCII2EBCDIC[0x43] = (byte) 0xC3;
        ASCII2EBCDIC[0x44] = (byte) 0xC4;
        ASCII2EBCDIC[0x45] = (byte) 0xC5;
        ASCII2EBCDIC[0x46] = (byte) 0xC6;
        ASCII2EBCDIC[0x47] = (byte) 0xC7;
        ASCII2EBCDIC[0x48] = (byte) 0xC8;
        ASCII2EBCDIC[0x49] = (byte) 0xC9;
        ASCII2EBCDIC[0x4A] = (byte) 0xD1;
        ASCII2EBCDIC[0x4B] = (byte) 0xD2;
        ASCII2EBCDIC[0x4C] = (byte) 0xD3;
        ASCII2EBCDIC[0x4D] = (byte) 0xD4;
        ASCII2EBCDIC[0x4E] = (byte) 0xD5;
        ASCII2EBCDIC[0x4F] = (byte) 0xD6;
        ASCII2EBCDIC[0x50] = (byte) 0xD7;
        ASCII2EBCDIC[0x51] = (byte) 0xD8;
        ASCII2EBCDIC[0x52] = (byte) 0xD9;
        ASCII2EBCDIC[0x53] = (byte) 0xE2;
        ASCII2EBCDIC[0x54] = (byte) 0xE3;
        ASCII2EBCDIC[0x55] = (byte) 0xE4;
        ASCII2EBCDIC[0x56] = (byte) 0xE5;
        ASCII2EBCDIC[0x57] = (byte) 0xE6;
        ASCII2EBCDIC[0x58] = (byte) 0xE7;
        ASCII2EBCDIC[0x59] = (byte) 0xE8;
        ASCII2EBCDIC[0x5A] = (byte) 0xE9;
        ASCII2EBCDIC[0x5B] = (byte) 0x4A;
        ASCII2EBCDIC[0x5C] = (byte) 0xE0;
        ASCII2EBCDIC[0x5D] = (byte) 0x5A;
        ASCII2EBCDIC[0x5E] = (byte) 0x5F;
        ASCII2EBCDIC[0x5F] = (byte) 0x6D;
        ASCII2EBCDIC[0x60] = (byte) 0x79;
        ASCII2EBCDIC[0x61] = (byte) 0x81;
        ASCII2EBCDIC[0x62] = (byte) 0x82;
        ASCII2EBCDIC[0x63] = (byte) 0x83;
        ASCII2EBCDIC[0x64] = (byte) 0x84;
        ASCII2EBCDIC[0x65] = (byte) 0x85;
        ASCII2EBCDIC[0x66] = (byte) 0x86;
        ASCII2EBCDIC[0x67] = (byte) 0x87;
        ASCII2EBCDIC[0x68] = (byte) 0x88;
        ASCII2EBCDIC[0x69] = (byte) 0x89;
        ASCII2EBCDIC[0x6A] = (byte) 0x91;
        ASCII2EBCDIC[0x6B] = (byte) 0x92;
        ASCII2EBCDIC[0x6C] = (byte) 0x93;
        ASCII2EBCDIC[0x6D] = (byte) 0x94;
        ASCII2EBCDIC[0x6E] = (byte) 0x95;
        ASCII2EBCDIC[0x6F] = (byte) 0x96;
        ASCII2EBCDIC[0x70] = (byte) 0x97;
        ASCII2EBCDIC[0x71] = (byte) 0x98;
        ASCII2EBCDIC[0x72] = (byte) 0x99;
        ASCII2EBCDIC[0x73] = (byte) 0xA2;
        ASCII2EBCDIC[0x74] = (byte) 0xA3;
        ASCII2EBCDIC[0x75] = (byte) 0xA4;
        ASCII2EBCDIC[0x76] = (byte) 0xA5;
        ASCII2EBCDIC[0x77] = (byte) 0xA6;
        ASCII2EBCDIC[0x78] = (byte) 0xA7;
        ASCII2EBCDIC[0x79] = (byte) 0xA8;
        ASCII2EBCDIC[0x7A] = (byte) 0xA9;
        ASCII2EBCDIC[0x7B] = (byte) 0xC0;
        ASCII2EBCDIC[0x7C] = (byte) 0x6A;
        ASCII2EBCDIC[0x7D] = (byte) 0xD0;
        ASCII2EBCDIC[0x7E] = (byte) 0xA1;
        ASCII2EBCDIC[0x7F] = (byte) 0x07;
        ASCII2EBCDIC[0x80] = (byte) 0x20;
        ASCII2EBCDIC[0x81] = (byte) 0x21;
        ASCII2EBCDIC[0x82] = (byte) 0x22;
        ASCII2EBCDIC[0x83] = (byte) 0x23;
        ASCII2EBCDIC[0x84] = (byte) 0x24;
        ASCII2EBCDIC[0x85] = (byte) 0x15;
        ASCII2EBCDIC[0x86] = (byte) 0x06;
        ASCII2EBCDIC[0x87] = (byte) 0x17;
        ASCII2EBCDIC[0x88] = (byte) 0x28;
        ASCII2EBCDIC[0x89] = (byte) 0x29;
        ASCII2EBCDIC[0x8A] = (byte) 0x2A;
        ASCII2EBCDIC[0x8B] = (byte) 0x2B;
        ASCII2EBCDIC[0x8C] = (byte) 0x2C;
        ASCII2EBCDIC[0x8D] = (byte) 0x09;
        ASCII2EBCDIC[0x8E] = (byte) 0x0A;
        ASCII2EBCDIC[0x8F] = (byte) 0x1B;
        ASCII2EBCDIC[0x90] = (byte) 0x30;
        ASCII2EBCDIC[0x91] = (byte) 0x31;
        ASCII2EBCDIC[0x92] = (byte) 0x1A;
        ASCII2EBCDIC[0x93] = (byte) 0x33;
        ASCII2EBCDIC[0x94] = (byte) 0x34;
        ASCII2EBCDIC[0x95] = (byte) 0x35;
        ASCII2EBCDIC[0x96] = (byte) 0x36;
        ASCII2EBCDIC[0x97] = (byte) 0x08;
        ASCII2EBCDIC[0x98] = (byte) 0x38;
        ASCII2EBCDIC[0x99] = (byte) 0x39;
        ASCII2EBCDIC[0x9A] = (byte) 0x3A;
        ASCII2EBCDIC[0x9B] = (byte) 0x3B;
        ASCII2EBCDIC[0x9C] = (byte) 0x04;
        ASCII2EBCDIC[0x9D] = (byte) 0x14;
        ASCII2EBCDIC[0x9E] = (byte) 0x3E;
        ASCII2EBCDIC[0x9F] = (byte) 0xE1;
        ASCII2EBCDIC[0xA0] = (byte) 0x41;
        ASCII2EBCDIC[0xA1] = (byte) 0x42;
        ASCII2EBCDIC[0xA2] = (byte) 0x43;
        ASCII2EBCDIC[0xA3] = (byte) 0x44;
        ASCII2EBCDIC[0xA4] = (byte) 0x45;
        ASCII2EBCDIC[0xA5] = (byte) 0x46;
        ASCII2EBCDIC[0xA6] = (byte) 0x47;
        ASCII2EBCDIC[0xA7] = (byte) 0x48;
        ASCII2EBCDIC[0xA8] = (byte) 0x49;
        ASCII2EBCDIC[0xA9] = (byte) 0x51;
        ASCII2EBCDIC[0xAA] = (byte) 0x52;
        ASCII2EBCDIC[0xAB] = (byte) 0x53;
        ASCII2EBCDIC[0xAC] = (byte) 0x54;
        ASCII2EBCDIC[0xAD] = (byte) 0x55;
        ASCII2EBCDIC[0xAE] = (byte) 0x56;
        ASCII2EBCDIC[0xAF] = (byte) 0x57;
        ASCII2EBCDIC[0xB0] = (byte) 0x58;
        ASCII2EBCDIC[0xB1] = (byte) 0x59;
        ASCII2EBCDIC[0xB2] = (byte) 0x62;
        ASCII2EBCDIC[0xB3] = (byte) 0x63;
        ASCII2EBCDIC[0xB4] = (byte) 0x64;
        ASCII2EBCDIC[0xB5] = (byte) 0x65;
        ASCII2EBCDIC[0xB6] = (byte) 0x66;
        ASCII2EBCDIC[0xB7] = (byte) 0x67;
        ASCII2EBCDIC[0xB8] = (byte) 0x68;
        ASCII2EBCDIC[0xB9] = (byte) 0x69;
        ASCII2EBCDIC[0xBA] = (byte) 0x70;
        ASCII2EBCDIC[0xBB] = (byte) 0x71;
        ASCII2EBCDIC[0xBC] = (byte) 0x72;
        ASCII2EBCDIC[0xBD] = (byte) 0x73;
        ASCII2EBCDIC[0xBE] = (byte) 0x74;
        ASCII2EBCDIC[0xBF] = (byte) 0x75;
        ASCII2EBCDIC[0xC0] = (byte) 0x76;
        ASCII2EBCDIC[0xC1] = (byte) 0x77;
        ASCII2EBCDIC[0xC2] = (byte) 0x78;
        ASCII2EBCDIC[0xC3] = (byte) 0x80;
        ASCII2EBCDIC[0xC4] = (byte) 0x8A;
        ASCII2EBCDIC[0xC5] = (byte) 0x8B;
        ASCII2EBCDIC[0xC6] = (byte) 0x8C;
        ASCII2EBCDIC[0xC7] = (byte) 0x8D;
        ASCII2EBCDIC[0xC8] = (byte) 0x8E;
        ASCII2EBCDIC[0xC9] = (byte) 0x8F;
        ASCII2EBCDIC[0xCA] = (byte) 0x90;
        ASCII2EBCDIC[0xCB] = (byte) 0x9A;
        ASCII2EBCDIC[0xCC] = (byte) 0x9B;
        ASCII2EBCDIC[0xCD] = (byte) 0x9C;
        ASCII2EBCDIC[0xCE] = (byte) 0x9D;
        ASCII2EBCDIC[0xCF] = (byte) 0x9E;
        ASCII2EBCDIC[0xD0] = (byte) 0x9F;
        ASCII2EBCDIC[0xD1] = (byte) 0xA0;
        ASCII2EBCDIC[0xD2] = (byte) 0xAA;
        ASCII2EBCDIC[0xD3] = (byte) 0xAB;
        ASCII2EBCDIC[0xD4] = (byte) 0xAC;
        ASCII2EBCDIC[0xD5] = (byte) 0xAD;
        ASCII2EBCDIC[0xD6] = (byte) 0xAE;
        ASCII2EBCDIC[0xD7] = (byte) 0xAF;
        ASCII2EBCDIC[0xD8] = (byte) 0xB0;
        ASCII2EBCDIC[0xD9] = (byte) 0xB1;
        ASCII2EBCDIC[0xDA] = (byte) 0xB2;
        ASCII2EBCDIC[0xDB] = (byte) 0xB3;
        ASCII2EBCDIC[0xDC] = (byte) 0xB4;
        ASCII2EBCDIC[0xDD] = (byte) 0xB5;
        ASCII2EBCDIC[0xDE] = (byte) 0xB6;
        ASCII2EBCDIC[0xDF] = (byte) 0xB7;
        ASCII2EBCDIC[0xE0] = (byte) 0xB8;
        ASCII2EBCDIC[0xE1] = (byte) 0xB9;
        ASCII2EBCDIC[0xE2] = (byte) 0xBA;
        ASCII2EBCDIC[0xE3] = (byte) 0xBB;
        ASCII2EBCDIC[0xE4] = (byte) 0xBC;
        ASCII2EBCDIC[0xE5] = (byte) 0xBD;
        ASCII2EBCDIC[0xE6] = (byte) 0xBE;
        ASCII2EBCDIC[0xE7] = (byte) 0xBF;
        ASCII2EBCDIC[0xE8] = (byte) 0xCA;
        ASCII2EBCDIC[0xE9] = (byte) 0xCB;
        ASCII2EBCDIC[0xEA] = (byte) 0xCC;
        ASCII2EBCDIC[0xEB] = (byte) 0xCD;
        ASCII2EBCDIC[0xEC] = (byte) 0xCE;
        ASCII2EBCDIC[0xED] = (byte) 0xCF;
        ASCII2EBCDIC[0xEE] = (byte) 0xDA;
        ASCII2EBCDIC[0xEF] = (byte) 0xDB;
        ASCII2EBCDIC[0xF0] = (byte) 0xDC;
        ASCII2EBCDIC[0xF1] = (byte) 0xDD;
        ASCII2EBCDIC[0xF2] = (byte) 0xDE;
        ASCII2EBCDIC[0xF3] = (byte) 0xDF;
        ASCII2EBCDIC[0xF4] = (byte) 0xEA;
        ASCII2EBCDIC[0xF5] = (byte) 0xEB;
        ASCII2EBCDIC[0xF6] = (byte) 0xEC;
        ASCII2EBCDIC[0xF7] = (byte) 0xED;
        ASCII2EBCDIC[0xF8] = (byte) 0xEE;
        ASCII2EBCDIC[0xF9] = (byte) 0xEF;
        ASCII2EBCDIC[0xFA] = (byte) 0xFA;
        ASCII2EBCDIC[0xFB] = (byte) 0xFB;
        ASCII2EBCDIC[0xFC] = (byte) 0xFC;
        ASCII2EBCDIC[0xFD] = (byte) 0xFD;
        ASCII2EBCDIC[0xFE] = (byte) 0xFE;
        ASCII2EBCDIC[0xFF] = (byte) 0xFF;
    }

    private static byte convertByteA2E(byte in) {
        return ASCII2EBCDIC[in & 0xFF];
    }

    public static byte[] convertStringToEBCDIC(byte[] in) {
        if (in != null) {
            byte[] out = new byte[in.length];
            for (int i = 0; i < in.length; ++i) {
                out[i] = convertByteA2E(in[i]);
            }
            return out;
        }
        return null;
    }
    
    public static void main(String[] args) throws Exception {
        byte[] result = convertStringToEBCDIC("baculsoft".getBytes());
        
        System.out.println(new String(result)); // original result
        System.out.println(new String(result, "Cp1047")); // convert into readable string        
    }
}

This is the result on my Netbean’s IDE console.

Weird Error when Connecting Spring’s JavaMailSender to Postfix

By / 27 March 2013 / Java, Programming / , , , ,

I had a weird error today when trying to connect to my server’s postfix mail server. It’s weird because i never had this kind of error when connecting to Google Mail server. This is the error that i see on postfix’s log.

Mar 26 01:50:19 localhost postfix/smtpd[24907]: connect from localhost[127.0.0.1]
Mar 26 01:50:19 localhost postfix/smtpd[24907]: setting up TLS connection from localhost[127.0.0.1]
Mar 26 01:50:19 localhost postfix/smtpd[24907]: SSL_accept error from localhost[127.0.0.1]: 0
Mar 26 01:50:19 localhost postfix/smtpd[24907]: warning: TLS library problem: 24907:error:14094416:SSL routines:SSL3_READ_BYTES:sslv3 alert certificate unknown:s3_pkt.c:1193:SSL alert number 46:
Mar 26 01:50:19 localhost postfix/smtpd[24907]: lost connection after STARTTLS from localhost[127.0.0.1]
Mar 26 01:50:19 localhost postfix/smtpd[24907]: disconnect from localhost[127.0.0.1]

This is my email configuration on Spring’s applicationContext.xml.

<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
	<property name="host" value="localhost"/>
	<property name="port" value="25"/>
	<property name="username" value="admin@whatever.com"></property>
	<property name="password" value="password"></property>
	<property name="javaMailProperties">
		<props>
			<prop key="mail.smtp.auth">true</prop>
			<prop key="mail.smtp.starttls.enable">true</prop>
		</props>
	</property>
</bean>

After googling for a while, i found out that somehow the error happen because of TLS problem. The workaround is actually easy, i disabled the starttls property on bean mailSender.

<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
	<property name="host" value="localhost"/>
	<property name="port" value="25"/>
	<property name="username" value="admin@whatever.com"></property>
	<property name="password" value="password"></property>
	<property name="javaMailProperties">
		<props>
			<prop key="mail.smtp.auth">true</prop>
			<prop key="mail.smtp.starttls.enable">false</prop>
		</props>
	</property>
</bean>

Bagaimana Membuat Autostart Aplikasi Java

By / 21 March 2013 / Java, Programming / , , , ,

Barusan kawan gw, Benni Purwonegoro SKom, sharing tentang masalah yang dia temukan serta bagaimana cara workaround-nya. Inti masalahnya sebenarnya sederhana, kebetulan beliau punya server (Windows Server) yang diinstall aplikasi java (web-based). Namun karena servernya sering restart, aplikasi java-nya juga jadi sering down. Oleh sebab itu dicari cara supaya aplikasi java yang diinstall menjadi aplikasi startup yang autorun otomatis setiap server dinyalakan.

Awalnya gw mengajukan supaya dibuat shortcut dari .bat yang kemudian ditaro dibawah folder startup, workaround lainnya adalah dengan Apache Procrun. Namun workaround dari beliau ternyata lebih simple dan efektif, hanya melakukan sedikit modifikasi regedit.

Berikut adalah petunjuk daari beliau

  1. Buat .bat file yang akan mengeksekusi aplikasi java.
  2. Buat new string value di key HKEY_LOCAL_MACHINE\ SOFTWARE\ Microsoft\ Windows\ CurrentVersion\Run
  3. Kemudian masukkan path file .bat yang baru dicreate sebagai value
  4. Langsung tes dan berdoa

Wow gan, workaround ente manjur sekali (H)

[Java] Algoritma Bilangan Romawi

By / 15 February 2013 / Java, Programming / , , , ,

Berawal dari ngobrol iseng-iseng dengan temen gw ( Kamplenk SKom ) sepulang dari ngopi bareng, beliau kebetulan nanya soal algoritma bilangan romawi untuk digunakan sebagai nomer surat. Kebetulan karena waktu gw agak kosong, iseng-iseng bikin kayak ginian ( setelah dibantu om google juga sih :p ). 

package com.edw.main;

public class RomanNumber {
    
    private static final char[] ROMAWI = {'M', 'D', 'C', 'L', 'X', 'V', 'I'};
    private static final int MAX = 1000; 
    private static final int[][] DIGITS = {
        {}, {0}, {0, 0}, {0, 0, 0}, {0, 1}, {1},
        {1, 0}, {1, 0, 0}, {1, 0, 0, 0}, {0, 2}}; 
        // konstanta digit modulus 10, 
        // array ke 4(0,1) maksudnya IV, array ke 9(0,2) --> IX

    public static String int2roman(int number) {
        if (number <= 0) {
            return "N";
        }
        StringBuilder sb = new StringBuilder();
        for (int i = 0, m = MAX; m > 0; m /= 10, i += 2) {
            int[] d = DIGITS[(number / m) % 10];
            for (int n : d) {
                sb.append(ROMAWI[i - n]);
            }
        }
        return sb.toString();
    }
    
    public static void main(String[] args) {
        System.out.println(int2roman(1990));
        System.out.println(int2roman(2012));
        System.out.println(int2roman(231));
    }
}

Oi plenk, udah jadi nih wkkwkwk….

A Simple Blowfish Encryption / Decryption using Java

By / 8 February 2013 / Java, Programming / , , , ,

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));
    }
}