Koal card - issuing management server provides key management functions . it is responsible for security management in the process of card - issuing such as the card key accessing , card key - issuing , card key s backup and retrieve and the key destruct etc 格尔发卡管理服务器提供密钥管理功能,它负责所有卡密钥的接入、发卡密钥服务、卡密钥备份和恢复以及密钥的销毁等整个发卡过程的安全管理。