Patent Number: 6,763,459

Title: Lightweight public key infrastructure employing disposable certificates

Abstract: A PKI includes an off-line registration authority that issues a first unsigned certificate to a subject that binds a public key of the subject to long-term identification information related to the subject and maintains a certificate database of unsigned certificates in which it stores the first unsigned certificate An on-line credentials server issues a short-term disposable certificate to the subject that binds the public key of the subject from the first unsigned certificate to the long-term identification information related to the subject from the first unsigned certificate. The credentials server maintains a table that contains entries corresponding to valid unsigned certificates stored in the certificate database. The subject presents the short-term disposable certificate to a verifier for authentication and demonstrates that the subject has knowledge of a private key corresponding to the public key in the short-term disposable certificate.

Inventors: Corella; Francisco (Hayward, CA)

Assignee: Hewlett-Packard Company, L.P.

International Classification: H04L 9/32 (20060101); G06F 001/24 ()

Expiration Date: 07/13/2021