WPKI Certificate Verification Scheme Based on Certificate Digest Signature-Online Certificate Status Protocol

A Multiple Signature Based Certificate Verification Scheme

In this paper, we proposed a formal representation of certificate validation in Pretty Good Privacy (PGP) and X.509 systems. This representation uses new logical assertions to support public-key based certification systems and different trust levels. Although the meanings of some of those assertions are different in PGP and X.509 cases, the certificate validation can be expressed using the same...

A Multiple Signature Based Certificate Verification Scheme

In this paper, we proposed a formal representation of certificate validation in Pretty Good Privacy (PGP) and X.509 systems. This representation uses new logical assertions to support public-key based certification systems and different trust levels. Although the meanings of some of those assertions are different in PGP and X.509 cases, the certificate validation can be expressed using the same...

Online Certificate Status Protocol- OCSP

Online Certificate Status Protocol- OCSP

A Certificate-Based Signature Scheme

In this paper, we propose the security notion of certificate-based signature that uses the same parameters and certificate revocation strategy as the encryption scheme presented at Eurocrypt 2003 by Gentry. Certificate-based signature preserves advantages of certificatebased encryption, such as implicit certification and no private key escrow. We present concrete certificate-based signature sch...