abstract:CAPICOM is a discontinued ActiveX control created by Microsoft to help expose a select set of Microsoft Cryptographic Application Programming Interface (CryptoAPI) functions through Microsoft Component Object Model (COM). It was intended to enable every environment that supports ActiveX to use Microsoft Cryptographic technologies, including web pages that are opened with Microsoft Internet Explorer or any other web browser that supports ActiveX.
为了支持密码编译功能，微软在 Windows API 之中加入了 Cryptographic API (CryptoAPI)??，然而 CryptoAPI 的使用方法相当复杂，为了简化 CryptoAPI 的使用，微软即将它以 COM 的方式包装成 CAPICOM?，让应用程序只需要利用 COM 调用方式，即可使用 CryptoAPI。