Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1996-09-30
2000-02-08
Gregory, Bernarr E.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 23, 380 29, 380 30, 380 49, H04L 900
Patent
active
060235098
ABSTRACT:
A method and apparatus for encoding a purpose into a digital signature, where purpose and digital signature bound into an extended digital signature. The extended digital signature capability binds a purpose description identifying the purpose for the digital signature so that when affixed to a digital signature, the digital signature cannot be employed for improper purposes. A hash function is used to generate a hash value from the purpose description. The hash value is used in a digital signature function to bind the purpose to a digital signature. The extended digital signature can be verified for validity by comparing it to a hash value. In an electronic transaction, the extended digital signature can allow a purpose to be bound with the digital signature so that improper or unauthorized transactions are detected and disallowed.
REFERENCES:
patent: 5005200 (1991-04-01), Fischer
patent: 5208858 (1993-05-01), Vollert et al.
patent: 5479509 (1995-12-01), Ugon
Davis Derek L.
Herbert Howard C.
Gregory Bernarr E.
Intel Corporation
LandOfFree
Digital signature purpose encoding does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital signature purpose encoding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital signature purpose encoding will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1686515