md5:md5_hash/3

Hash is the MD5 hash of Data, The conversion is controlled by Options:

encoding(+Encoding): If Data is a sequence of character codes, this must be translated into a sequence of bytes, because that is what the hashing requires. The default encoding is utf8. The other meaningful value is octet, claiming that Data contains raw bytes.

Arguments:

`Data`	- is either an atom, string, code-list or char-list.
`Hash`	- is an atom holding 32 characters, representing the hash in hexadecimal notation