Utility for creating and verifying digital signature (with CryptoPro CSP supporting Russian cryptographic algorithms) includes:

• creating a detached digital signature
• creating an digital signature in a zip container
• creation of an attached digital signature
• signature of a group of files
• verification of digital signature
• viewing the contents of a zip container with a document and digital signature

ALT Linux Wiki: https://www.altlinux.org/Alt-csp-cryptopro