Write MD5 Algorithm Program in Java.

 MD5 Algorithm

1.Write MD5 Algorithm Program in Java.

import java.security.*;
public class Main
{
public static void main(String[] args) {
try {
 MessageDigest md = MessageDigest.getInstance("MD5");
 System.out.println("Message Digest Object Info:");
 System.out.println(" * Algorithm = "+ md.getAlgorithm());
 System.out.println(" * Provider = "+ md.getProvider());
 System.out.println(" * ToString = "+ md.toString());

 String input = "";
 md.update(input.getBytes());
 byte[] output = md.digest();
 System.out.println();
 System.out.println("MD5(\""+input+"\")= "+bytesToHexa(output));

 input = "abc";
 md.update(input.getBytes());
 output = md.digest();
 System.out.println();
 System.out.println("MD5(\""+ input + "\")= " +bytesToHexa(output));

 input = "abd";
 md.update(input.getBytes());
 output = md.digest();
 System.out.println();
 System.out.println("MD5(\""+ input + "\")= " +bytesToHexa(output));

 input = "abcdefghijklmnopqrstquvrwxyz";
 md.update(input.getBytes());
 output = md.digest();
 System.out.println();
 System.out.println("MD5(\""+ input + "\")= " +bytesToHexa(output));

 input = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 md.update(input.getBytes());
 output = md.digest();
 System.out.println();
 System.out.println("MD5(\""+ input + "\")= " +bytesToHexa(output));
}
catch(Exception e) {
 System.out.println("Exception "+ e);
};
}
private static String bytesToHexa(byte[] b)
{
 char hexDigit[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
 StringBuffer buf = new StringBuffer();
 for(int i = 0;i<b.length;i++)
 {
 buf.append(hexDigit[(b[i]>>4)& 0x0f]);
 buf.append(hexDigit[b[i] & 0x0f]);
 }
 return buf.toString();
}
}

Output :