Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2008-07-01
2008-07-01
Kincaid, Kristine (Department: 2139)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
Reexamination Certificate
active
10611277
ABSTRACT:
The principles of the present invention provide for delegating certificate validation. A client computer system sends a certificate validation request to a server computer system over a trusted link. The certificate validation request includes at least enough certificate information for a certificate authority to identify a digital certificate that binds a sending entity to a private key. The server computer system checks a validation path to determine if the digital certificate is valid and at least one certificate revocation list to determine if the certificate has been compromised. The server computer system sends a certificate status indication to the client computer system over the trusted link. Accordingly, the resources of the server computer system, instead of the client computer system, are utilized to validate a digital certificate. Further, digital certificate validation can be delegated to a server computer system that attempts to pre-validate a digital certificate.
REFERENCES:
patent: 5835726 (1998-11-01), Shwed et al.
patent: 6301658 (2001-10-01), Koehler
Wikipedia Encyclopedia, on line at: http://en.wikipedia.org/wiki/Firewall—(networking). The pages is attached.
“Delegation Chains Secure up to Constant Length,” Masayuki Abe and Tatsuaki Okamoto NTT Laboratories, Nippon Telegraph and Telephone Corporation pp. 144 to 156.
A Look at Some More PKI Design Efforts Mione, A. Digital Systems Report vol. 20, No. 4 p. 15 to 21 Winter, 1998.
Batthish Karim Michel
Pereira Jorge
Williams Roy
Homayounmehr Farid
Kincaid Kristine
Microsoft Corporation
Workman Nydegger
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