Problem Statement

Find the MD4 message digest of a string of octets. Use the ASCII encoded string “Rosetta Code” (without quotes). You may either call an MD4 library, or implement MD4 in your language. MD4 is an obsolete hash function that computes a 128-bit message digest that sometimes appears in obsolete protocols. RFC 1320 specifies the MD4 algorithm. RFC 6150 declares that MD4 is obsolete.

Let's start with the solution:

#!/usr/bin/lua

require "crypto"

print(crypto.digest("MD4", "Rosetta Code"))