How to generate a MD5 hash in Groovy ...

md5.groovy

 def generateMD5(String s) {
    MessageDigest digest = MessageDigest.getInstance("MD5")
    digest.update(s.bytes);
    new BigInteger(1, digest.digest()).toString(16).padLeft(32, '0')
 } 

I had to do this long time ago and I came up with the following one-liner. I hope this helps:

import java.security.MessageDigest

def generateMD5_A(String s){
    MessageDigest.getInstance("MD5").digest(s.bytes).encodeHex().toString()
}

In Groovy 2.5 you can just do:

'Hello'.md5()

In Groovy 2.5 you can just do:

'Hello'.md5()