The ESEP Crypto Extension is a Chrome extension designed for users of the ЕСЭП system who use Chrome version 102+. This extension allows for the application and verification of electronic signatures using the "Crypto component" cryptography plug-in in Chromium-based browsers such as Google Chrome, Opera, and Yandex Browser. It is specifically designed for participation in electronic auctions and document flow that utilize the ЕСЭП unified electronic signature system. The extension does not collect, transmit, or use any personal or confidential user data.