The paper discusses the XKMS application models, gives three kinds of PKI application mechanisms which are in XKMS trust domain, between XKMS trust domain and of mixing XKMS with TPKI.

• 深入探讨了XKMS的应用模型，给出XKMS信任域内、信任域间、XKMS与TPKI混合的三种PKI应用机制；