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US5245658A
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Domain-based encryption
Assignee: Individual
•
Filing: 1992-01-06
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Granted: 1993-09-14
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Expires: 2012-01-06
Abstract
Abstract A domain-based encryption system which uses identical domains known only to the parties involved in the communication. An encrypted message is sent between communicating parties which consists of a stream of coordinates which locate specific points in the domains. The located points comprise a symbol set that forms the plaintext message.
Inventors
- 👤 George Bush
- 👤 Estelle F. Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:27
CPC Classifications
H; H04; H04L; H04L9/00; H04L9/08; H04L9/0816; H04L9/0819; H04L9/083; H04L9/0838
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
68 words
A system for exchanging initial set-up keys between communicating parties wherein a unique Identification Domain means for each respective party is held in a central computer and by each respective communicating party wherein set-up keys of the communicating parties are located in the respective unique Identification Domain of each of said parties and are generated on a one time, on demand basis under control of the central computer.
Claim 2
Independent Claim
68 words
A system for exchanging initial set-up keys between communicating parties wherein a unique Identification Domain means for each respective party is held in a central computer and by each respective communicating party wherein set-up keys of the communicating parties are located in the respective unique Identification Domain of each of said parties and are generated on a one time, on demand basis under control of the central computer.
Claim 3
Dependent Claim
18 words
A system in accordance with claim 1 in which the set-up keys are generated by said central computer.
Claim 4
Independent Claim
32 words
A system in which a change to both the sender and recipient protocols occurs upon the sending party interrupting transmission to generate a pseudo-random number as a key to change protocol alteration.
Claim 5
Independent Claim
32 words
A system in which a change to both the sender and recipient protocols occurs upon the sending party interrupting transmission to generate a pseudo-random number as a key to change protocol alteration.
References Cited (Backward Citations)
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-09-13 | 1997-03-15 | 1997-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-13 | 2001-03-15 | 2001-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-13 | 2005-03-15 | 2005-09-14 | $7700.00 | Window Closed / Lapsed |