servidor de administración de claves(The Exchange computer on which the Key Management Service has been installed. There can be one Key Management Server per administrative group)
Servicio de administración de claves(An optional Microsoft Exchange 2000 Server component that is installed on a designated server in an administrative group. It provides centralized administration and archival of private keys, and maintains every user s private encryption key in an encrypted database. The keys are used for encrypting e-mail messages and signing messages with digital signatures)