SecuDe是一个由安全应用程序接口组成,对验证机制、证件处理、PEM、X.400报文处理和密钥管理提供支持。SecuDe提供DES、 RSA杂凑函数、密钥生成以及数字签名的生成和核实等多种密码机制。签名算法由杂凑函数和RSA函数复合而成。用于核实签名的公开钥由系统的认证机构确认。报文加密采用DES算法,其密钥则由RSA算法加密。各用户用于加/解密的RSA密钥对与用于签名和核实的RSA密钥对是不一样的。密钥的生成和分发由特定模块完成。-SecuDe is a security application program interface comprises a mechanism to verify, document processing, PEM, X.400 packet processing and key management support. SecuDe provide DES, RSA hash function, key generation and digital signature generation and verification mechanisms such as passwords. Signature algorithm and hash function by the functional composition from RSA. Used to verify the signature public key authentication by the system body. Message encryption using DES algorithm, the key encryption algorithm from RSA. The user for encryption/decryption with the RSA key pair for signature and verification of the RSA key pair is not the same. Key generation and distribution by the completion of specific modules.