BASEALT: Surguch Application for working with built-in electronic signatures in OS Alt

Main article: Electronic signature (EDS)

2025: Availability in the Alt Family OS

The "Surguch" application for working with built-in electronic digital signatures appeared operating systems in the "" family. Viola The development was made at the request of customers in accordance with the requirements of the Federal Law "On Electronic Signature" dated 06.04.2011 No. 63-FZ. This was BASEALT reported on March 5, 2025.

"Surguch" works with documents in the format PDF and is compatible with the crypto provider. CryptoPro CSP

The main functions of the application:

• Create an electronic digital signature in PDF Cades-BES/T/XLT1 formats
• creation of an EDS stamp in accordance with the requirements of the 63FZ;
• Display the presence of signatures in the PDF
• viewing signature properties in Cades-BES/T/XLT1 formats, PKSC7 and checking their correctness;
• notification of changes in the document after signing, the ability to view the version of the document at the time of signing;
• checking the chain of certificates and displaying information about the certificates used in the generation of the EDS, including using the OCSP server;
• Save user profiles for signing
• Viewing a PDF document
• Send the document to print.

You can work with the program in graphical application mode and through the cli (command line interface).

"Surguch" supports the PAdES standard (PDF Advanced Electronic Signatures). The signature is embedded in a PDF file, and a stamp with a visual mark is generated if necessary.

When sending a PDF of a document signed by Surguch according to the PadES-XLT1 standard, the receiving party sees * comprehensive information about the signature:

• stamp;
• notification of the presence of an EDS inside the file;
• EDS attributes - who, when signed, which certificate chain was used

New features can be added to the application based on customer requests.

"Surguch" works in the OS "Alt Workstation," "Alt Workstation K," "Alt Education" and "Alt SP." The surguch package is available in the p10, p11 and c10f2 repositories.

Also in the Alt OS, the ALT CSP CryptoPro utility is available to create an attached and unlocked electronic signature.