It can provide total security service to the information system of client by digital certificate issued by ca authentication center.

通过CA认证中心发行的电子证书可以为用户提供信息安全的全面服务。

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The digital certificate service and repository service is the base of PKI service, nowadays LDAP is very popular in PKI for its characteristics.

数字证书服务与信息存储服务是PKI服务的基础，LDAP以其自身的固有特性成为认证服务中信息存储服务的首选。

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Up until now he hasn't seen the value in paying the monthly subscription fee for a service he barely has time to use, but when someone hands you a certificate for a free year of digital service, you're gonna accept.

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Even then, the service would not release digital assets without examining a copy of the customer's death certificate, Toeman said.

CNN: New services promise online life after death