.RZK File Extension
File Type 1Red Zion Key File
What is an RZK file?
Security key used for copy-protecting digital books saved in the Red Zion E-book format; contains user rights for a specific Red Zion E-Book (.RZB) file.
Red Zion E-book, or "E-knjiga" is a Slovenian software program.
File Type 2File Crypt Password File
.RZK File Association 2
Contains password information for .RZX files encrypted with File Crypt (also known as Kriptirnik and Akte Krypta); created by File Crypt, but can be opened and edited with a text editor.