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MODULE FOR 1C-BITRIX

E2E4

Built-in Digital Signature for BUS

The module enables signing PDF documents with a built-in electronic signature (QES/EQES) directly on the website. Documents signed with QES or EQES have legal force equivalent to a handwritten signature in accordance with Federal Law No. 63-FZ "On Electronic Signatures." A visual signature stamp is automatically embedded in the signed file.

Technical details

Published
26.02.2026
Updated
06.04.2026
Version
1.2.5
Installed
Less than 50 times
Suitable editions
"First Site", Start, Standard, Small Business, Business
Responsiveness
No
Composite Support
No
Compatible with Sites24
No
Developer
E2E4

What this solution does

The module enables signing PDF documents with a built-in electronic signature (QES/EQES) directly on the website. Documents signed with QES or EQES have legal force equivalent to a handwritten signature in accordance with Federal Law No. 63-FZ "On Electronic Signatures." A visual signature stamp is automatically embedded in the signed file.

Use cases:

- Signing between a site visitor and administration: for example, a supplier (legal entity or individual entrepreneur) signs a supply contract during registration on a procurement platform; a counterparty signs a service completion act on a B2B service.

- Direct signing between site visitors: suitable for wholesale B2B portals and marketplaces built on BUS, where multiple suppliers and wholesale buyers (legal entities/individual entrepreneurs) are registered. Parties sign supply contracts or acceptance acts directly in their personal accounts without using external electronic document management services.

- Signing order-related documents in an online store: invoices, acts, and certificates are signed directly in the buyer's personal account.

- Signing files from infoblock properties without transferring documents to external systems.

Capabilities:

- Supported signature types: QES, EQES, NEES

The module enables the creation of embedded digital signatures in PDF documents, supporting PAdES-BES, PAdES-T, and PAdES-X Long Type 1 formats. It features a visual signature stamp with support for custom text and background images. Ready-to-use components are provided for the Bitrix administrative panel and the public site section, including a standard online store template. The public template is built with Vue.js for easy adaptation to the site's design.

Document signing is performed locally on the user's device via the CryptoPro plugin. Digital signature keys are not transmitted to the website server or third-party services.

To use the module, the signing device (administrator or visitor) must have the following installed: CryptoPro CSP version 4 or higher, the CryptoPro ECP Browser plug-in, and a valid digital signature certificate.

General iT can install and configure this module and check how it works on your website.

UPDATE HISTORY

What’s new

2 releases
1.2.5 (06.04.2026)Latest update

Migration to the new v2 API of the signing service

1.1.0 (23.01.2026)

Added support for creating signatures in PAdES-T and PAdES-X Long Type 1 formats

YOUR PROJECT INFRASTRUCTURE

A home for your website

BEFORE YOU ORDER

Let’s go through the details.

How do I purchase a solution?
Submit a request on the solution page. A manager will check your selection, confirm the terms and arrange the purchase. We can also help with installation and setup.
Is a 1C-Bitrix licence included?
The default price covers the solution itself. If the developer offers a bundle with a 1C-Bitrix licence, you can select it separately on the solution page.
Can I try a solution first?
Available online demos and trial periods are shown on the solution page. The trial length depends on the solution.
How much does renewal cost?
Renewal is calculated as 50% of the full solution price before discounts. A manager will confirm the renewal terms and period before you order.
Can you help implement the solution?
Yes. We can build a website or store based on a template, or install, configure and check a module for compatibility. The scope and cost of the work are agreed separately.

GENERAL iT

Let’s discuss your project

Получатель: ООО «Дженерал Ай Ти Рус»

1C-BITRIX

Install solution

Enter a domain with or without https://. The installer will open in your website control panel in a new tab.

Solution screenshots

Solution screenshot