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 Title: |
US5619575:
Pseudorandom composition-based cryptographic authentication process
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Koopman, Jr., Philip J.; Hebron, CT
Finn, Alan M.; Amston, CT
LaBarre, Robert E.; Willington, CT
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| Assignee: |
United Technologies Automotive, Inc., Dearborn, MI
other patents from UNITED TECHNOLOGIES AUTOMOTIVE, INC. (597540) (approx. 411)
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| Published / Filed: |
1997-04-08
/ 1994-08-22
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| Application Number: |
US1994000294147
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| IPC Code: |
Advanced:
H04L 9/18;
H04L 9/32;
Core:
more...
IPC-7:
H04K 1/00;
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| ECLA Code: |
H04L9/18; H04L9/32B;
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| U.S. Class: |
Current:
380/028;
380/042;
Original:
380/028;
380/042;
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| Field of Search: |
380/028,42,4,49
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| Priority Number: |
| 1994-08-22 |
US1994000294147 |
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| Abstract: |
The pseudorandom process iteratively applies a selected CRC encryption process on the information to be encrypted. The encryption process is selected by testing one of the digits comprising the number to be encrypted. A first encryption process is used if the tested digit is a 1; a second encryption process is used if the tested digit is a 0. The process is repeated a plurality of times, e.g. once for each digit in the number to be encrypted, resulting in a highly encrypted value that is not easily reverse engineered by chosen or known plaintext attack.
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| Primary / Asst. Examiners: |
Cain, David C.;
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| INPADOC Legal Status: |
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| Designated Country: |
DE FR GB IT SE
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| Family: |
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First Claim:
Show all 19 claims |
What is claimed is:
1. A method of encrypting digital information comprising the steps of:
- (a) representing said digital information as a set of binary digits, N:
- (b) testing one of the binary digits to determine if the digit is a 1 or a 0;
- (c) applying a first encryption process on said digital information if the digit is a 1 or a second encryption process on said digital information if the digit is a 0 to produce an altered set of digital information;
- (d) replacing said digital information with said altered set of digital information;
- (e) repeating steps (b) through (d) upon testing a second of said binary digits to determine if said second of said binary digits is a 1 or a 0.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 5 U.S. patent(s) that reference this one
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