Authorization infrastructure based on public key cryptography
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United States of America Patent
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Mar 4, 2008
Grant Date -
N/A
app pub date -
Jan 14, 2000
filing date -
Jan 14, 2000
priority date (Note) -
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Abstract
A public key authorization infrastructure includes a client program accessible by a user and an application program. A certificate authority issues a long-term certificate that binds a public key of the user to long-term identification information related to the user. A directory stores the issued long-term certificate and short-term authorization information related to the user. A credentials server issues a short-term certificate to the client. The short-term certificate binds the public key to the long-term identification information and to the short-term authorization information. The client presents the short-term certificate to the application program for authorization and demonstrates that the user has knowledge of a private key corresponding to the public key in the short-term certificate. The short-term certificate includes an expiration date, and is not subject to revocation.
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