eSecuKey-K200 by Excelsecu is a digital certificate and secure information carrier based on PKI, designed to store digital certificates and private keys securely. It features a high-performance security chip and can be applied in various PKI fields, such as e-banking, e-government, e-commerce, and identity authentication. eSecuKey-K200 supports multiple algorithms for encryption and decryption, and includes a secure element for key pairs and certificate storage. It is compatible with multiple operating systems including Windows, Linux, and macOS, and supports Windows AD login and standard Windows Certificate applications. The device interfaces via USB2 Full Speed, Type A, and includes standard middleware interfaces such as CSP, CNG, Minidriver, and PKCS#11 V2.20. It is compliant with standards like X.509 v3 Certificate Storage and SSL v3, and is certified by FCC, CE, and RoHS.