Get Base64 From HEX
/*
* $Header: /cvsroot/mvnforum/mvnforum/contrib/phpbb2mvnforum/src/org/mvnforum/util/MD5.java,v 1.6 2007/01/15 10:27:31 dungbtm Exp $
* $Author: dungbtm $
* $Revision: 1.6 $
* $Date: 2007/01/15 10:27:31 $
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import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import sun.misc.BASE64Encoder;
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/**
* @author anandh
*/
public class MD5 {
static char[] carr = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
public static String getBase64FromHEX(String input) {
byte barr[] = new byte[16];
int bcnt = 0;
for (int i = 0; i < 32; i += 2) {
char c1 = input.charAt(i);
char c2 = input.charAt(i + 1);
int i1 = intFromChar(c1);
int i2 = intFromChar(c2);
barr[bcnt] = 0;
barr[bcnt] |= (byte) ((i1 & 0x0F) << 4);
barr[bcnt] |= (byte) (i2 & 0x0F);
bcnt++;
}
BASE64Encoder encoder = new BASE64Encoder();
return encoder.encode(barr);
}
public static synchronized String getMD5_Base64(String input) {
// please note that we dont use digest, because if we
// cannot get digest, then the second time we have to call it
// again, which will fail again
MessageDigest digest = null;
try {
digest = MessageDigest.getInstance("MD5");
} catch (Exception ex) {
ex.printStackTrace();
}
if (digest == null)
return input;
// now everything is ok, go ahead
try {
digest.update(input.getBytes("UTF-8"));
} catch (java.io.UnsupportedEncodingException ex) {
ex.printStackTrace();
}
byte[] rawData = digest.digest();
BASE64Encoder bencoder = new BASE64Encoder();
return bencoder.encode(rawData);
}
private static int intFromChar(char c) {
char clower = Character.toLowerCase(c);
for (int i = 0; i < carr.length; i++) {
if (clower == carr[i]) {
return i;
}
}
return 0;
}
public static void main(String[] args) {
//String password = args[0];
String password = "test";
MessageDigest digest = null;
try {
digest = MessageDigest.getInstance("MD5");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
try {
digest.update(password.getBytes("UTF-8"));
} catch (UnsupportedEncodingException ex) {
ex.printStackTrace();
}
byte[] rawData = digest.digest();
StringBuffer printable = new StringBuffer();
for (int i = 0; i < rawData.length; i++) {
printable.append(carr[((rawData[i] & 0xF0) >> 4)]);
printable.append(carr[(rawData[i] & 0x0F)]);
}
String phpbbPassword = printable.toString();
System.out.println("PHPBB : " + phpbbPassword);
System.out.println("MVNFORUM : " + getMD5_Base64(password));
System.out.println("PHPBB->MVNFORUM : " + getBase64FromHEX(phpbbPassword));
}
}
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