eSecuKey-K201 by Excelsecu is a digital certificate and secure information carrier based on PIV, embedded with a high-performance security chip, self-developed by Excelsecu. It supports the standard Windows in-box PIV Smart Card Minidriver and the Standard Windows Certificate Enrollment processes. eSecuKey-K201 features an embedded high-performance secure element for cryptographic functions, a hardware random number generator, and supports RSA, ECC, DES/3DES/TDES, and AES algorithms. It enables on-board key pair generation, digital signature/verification, data encryption/decryption, and secure storage for multiple keys and certificates. Standard middleware allows easy integration with PKI applications, Microsoft Smart Card Mini Driver, Microsoft CryptoAPI, and CNG PKCS#11 V2.20. The PKI SDK works with all certificate-related applications like VPN, document/email/transaction signature, and encryption. It supports Windows, MacOS, and Linux. PIV features are compatible with NIST SP 800-73-4 and various PIV applications. It also supports the deployment of Java applets (optional).