IIT End User CA-1. Sign (web-extension) is a free web-extension designed for users of Certificate Authority (CA). It provides control over private keys and certificates, as well as the ability to sign and encrypt user data.

This web-extension is specifically developed to work with the CA users signature web-library. In order to use the extension, additional software needs to be installed based on the user's operating system. For Microsoft Windows, the installation link is provided as a downloadable executable file. Apple macOS users can download and install the extension using the provided package file. Linux users have multiple options depending on their distribution and architecture, with different links provided for Debian/Ubuntu and RHEL/CentOS systems in both 32-bit and 64-bit versions. There is also a generic Linux option with tar files for both 32-bit and 64-bit architectures.

With IIT End User CA-1. Sign (web-extension), users can conveniently manage their private keys and certificates for CA purposes, and securely sign and encrypt their data. It offers a valuable tool for users in need of CA-related functionalities.