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    • 9. 发明授权
    • Method and apparatus for external organization path length validation within a public key infrastructure (PKI)
    • 公共密钥基础设施(PKI)内外部组织路径长度验证的方法和装置
    • US08484461B2
    • 2013-07-09
    • US12241566
    • 2008-09-30
    • Anthony R. MetkeDonald E. Eastlake, III
    • Anthony R. MetkeDonald E. Eastlake, III
    • H04L9/30
    • G06F21/33G06F2221/2145H04L9/007H04L9/3265H04L63/064H04L63/0823
    • A method and apparatus for external organization (EO) path length (EOPL) validation are provided. A relying party node (RPN) stores a current EO path length constraint (EOPLC) value, and an EOPL counter that maintains a count of an actual external organization path length. The RPN obtains a chain of certificates that link a subject node (SN) to its trust anchor, and processes the certificates in the chain. When a certificate has a lower EOPLC than the current EOPLC value, the RPN replaces the current EOPLC value with the lower EOPLC. When the certificate currently being evaluated includes an enabled EO flag, the RPN increments the EOPL counter by one. The EOPL validation fails when the EOPL counter is greater than the current EOPLC value, and is successful when the last remaining certificate in the chain is processed without having the EOPL counter exceed the current EOPLC value.
    • 提供了一种用于外部组织(EO)路径长度(EOPL)验证的方法和装置。 依赖方节点(RPN)存储当前EO路径长度约束(EOPLC)值,以及维持实际外部组织路径长度计数的EOPL计数器。 RPN获得将主节点(SN)链接到其信任锚点的证书链,并处理链中的证书。 当证书具有比当前EOPLC值更低的EOPLC时,RPN用较低的EOPLC替换当前的EOPLC值。 当当前正在评估的证书包含启用的EO标志时,RPN将EOPL计数器递增1。 当EOPL计数器大于当前EOPLC值时,EOPL验证失败,并且当链中的最后剩余证书被处理而不使EOPL计数器超过当前EOPLC值时,EOPL验证失败。