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1 基本机理基于非对称密码体制的数字签名将作为基本机制。某些具有秘密密钥产生签名,公开密钥核实签名特征的签名方案可很方便地用来建立分级证明体系。体系中不同等级的证明机构都要发给更低一级实体一个证书,它是通过用它的秘密密钥对更低一级的实体的公开密钥和其它信息一起进行签名来实现的。从而建立起一条不可破的可信链。这一系列的凭证
1 Basic Mechanisms Digital signatures based on asymmetric cryptosystems serve as the basic mechanism. Certain signature schemes with secret key generation signatures and public key signature verification signatures can be conveniently used to establish a hierarchical proof system. Different levels of certification bodies in the system are required to issue a certificate to a lower level entity by signing the lower level entity's public key and other information with its secret key. Thus establishing an unbreakable credible chain. This series of vouchers