Convert MD5 array to String java

Question

Hi! I know that there is a lot of similar topics, but still... can someone provide me a working example of method which generates MD5 String.
I'm currently using MessageDigest, and I'm doing the following to get a string

BASE64Encoder().encode(messageDigest.digest())  

I guess there is some better way to do that.
Thanks in advance!

Answer 1

import java.math.*;
import java.security.*;

String toEnc = "Encrypt This!"; // Value to encrypt
MessageDigest mdEnc = MessageDigest.getInstance("MD5"); 
mdEnc.update(toEnc.getBytes(), 0, toEnc.length());
String md5 = new BigInteger(1, mdEnc.digest()).toString(16) // Encrypted 

Answer 2

I'd use commons-codec

• Base64 - Base64.encodeBase64(digestBytes)
• Hex-string - Hex.encodeHex(digestBytes)

Answer 3

// Convert to hex string
StringBuffer sb = new StringBuffer();
for (int i = 0; i < messageDigest.length; i++) {
    sb.append(Integer.toHexString(0xff & messageDigest[i]));
}
String md5 = sb.toString();

This assumes you actually want your MD5 printed as an hex string, not BASE64-encoded. That's the way it is normally represented.