CFCA CryptoKit.ChinaTRC Extension is a digital certificate application extension developed by zyyizhou for China Trust Registration Co., Ltd. It is designed for the latest version of the Chrome browser. This extension is integrated into the business system of China Trust Registration Co., Ltd., allowing users to access certificate information and perform electronic signature-related functions using the X509 digital certificates stored in their USBKEY. With this extension, users can easily retrieve certificate details such as the certificate subject DN, issuer, and serial number, enabling them to efficiently carry out their electronic signature tasks within the China Trust Registration Co., Ltd. business system.