Crypto4 Files - Version 2.4 Crypto4 Files lets you perform both simple file operations such as pack files into ZIP archive, send files by e-mail, securely delete files and advanced security operations such as signing and encryption of files and folders. All operations are performed in a couple of clicks, e.g. you can pack files into ZIP archive, sign the archive and send it by e-mail by selecting one command in Explorer context menu. Crypto4 Files seamlessly integrates into Windows Explorer to provide easy access to file manipulation functions. You just select one or more files and click on selected files to invoke Context menu. You will find Crypto4 Files' functions available under "Process with Crypto4 Files" submenu. All functions are arranged into groups, with two most recenly used commands on top of other items.