md5_hash/3

Availability::- use_module(library(md5)).(can be autoloaded)

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.

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