888 |
Quite recently, widely used Public Key Infrastructure (PKI) has been deployed in distributed |
Quite recently, widely used Public Key Infrastructure (PKI) has been deployed in distributed |
889 |
systems \cite{rivest96sdsi}, \cite{spkiworkinggroup}. PKI is a reliable technology for securing |
systems \cite{rivest96sdsi}, \cite{spkiworkinggroup}. PKI is a reliable technology for securing |
890 |
data in rather \emph{static} computing systems, such as the Internet. However, in Peer-to-Peer |
data in rather \emph{static} computing systems, such as the Internet. However, in Peer-to-Peer |
891 |
networks, the problem of key based security mechanism is the maintenance of the keys as participating |
networks, the problem of key-based security mechanism is the maintenance of the keys as participating |
892 |
peers constantly join and leave the system. Specifically, the distribution of key changes becomes an essential |
peers constantly join and leave the system. These include revocation of keys and new key distribution in hostile |
|
problem in ad hoc environments. These include revocation of keys and new key distribution in hostile |
|
893 |
environment. |
environment. |
894 |
|
|
895 |
ConChord \cite{ajmani02conchord} is the first Peer-to-Peer system which has a support for PKI based |
ConChord \cite{ajmani02conchord} is the first Peer-to-Peer system which has a support for PKI based |