The cfpassphrase Lucee 5 extensions is for securely hashing and checking passwords/passphrases using proven industry standard algorithms.
This Lucee 5 extension version is based on the original cfpassphrase project by Peter Boughton:
https://github.com/boughtonp/cfpassphrase
Download the cfpassphrase.lex file, from above and then go to the Lucee 5 server or web administrator (depending on how you want it available) and go to the Extension -> Applications page and then scroll down to the bottom of the page and upload it using the upload option. It will then appear in the installed extensions list.
For usage instructions please see the cfpassphrase wiki: