Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1995-12-13
1998-06-30
Cangialosi, Salvatore
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 49, H04L 900
Patent
active
057745528
ABSTRACT:
A method and apparatus for retrieving, verifying, and using information accessible by a directory service agent to authenticate electronic messages is described. The method comprises the steps of transmitting an open connection message to establish communication between a directory user agent and a directory service agent, searching a directory in the directory service agent for authentication certificates, fetching the found authentication certificates, and transmitting the fetched authentication certificates to the directory user agent. In one embodiment of the invention, the method also comprises the step of searching the directory for authentication certificates responsive to a search criteria message in the open connection message.
REFERENCES:
patent: 5220604 (1993-06-01), Gasser et al.
patent: 5222140 (1993-06-01), Beller et al.
patent: 5313598 (1994-05-01), Yamakawa
patent: 5315657 (1994-05-01), Abadi et al.
patent: 5659616 (1997-08-01), Sudia
International Standards Organization, "Information Technology--Open Systems Interconnection--The Directory--Part 8: Authentication Framework", ISO/IEC 9594-8:1990 (E).
Cangialosi Salvatore
NCR Corporation
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