Crypto4™ Files -- sign and encrypt files with X.509 certificates from Windows Explorer

Crypto4 Files allows you to sign, encrypt, verify signature and decrypt files using X.509 certificate right from Windows Explorer.

Additionally, with Crypto4 Files you can securely delete, pack, unpack and e-mail files with a couple of clicks.

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.

Signing and encryption operations let you use X.509 certificates (Digital ID, often used to sign and encrypt e-mail) to sign and encrypt files.

File signing lets your partners or friends check that the file you sent them or placed to archive was really sent by you.
File encryption lets you give files to your partner or friend and at the same time ensure that only he or she can see the contents of the file. You can also use file encryption to secure files for yourself (i.e. just encrypt files and decrypt them later using your own certificate).
Algorithms and standards used in file signing and encryption are the same as the ones used in secure Internet connections and secure mail.

Secure file deletion lets you delete unwanted files in the way that the information contained in those files can't be later recovered even using advanced technics like low-level disk analysis.

Crypto4™ Files can be used together with Crypto4™ PKI in order to create and manage X.509 certificates, used for file encryption/signing.