Patent US6134325A successfully refreshed from Google Patents.
US6134325A
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Key transmission system
Assignee: Certicom Corp
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Filing: 1995-05-24
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Granted: 2000-10-17
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Expires: 2015-05-24
Abstract
Abstract A RSA encryption scheme includes a modulus in which at least one set of bits is of a predetermined configuration. The configuration may be selected to replicate the identity of the recipient or other information normally transmitted between the parties or may be information stored by the sender to allow only the balance of the modulus to be transmitted with the sender subsequently reconstructing the modulus.
Inventors
- 👤 Scott C. Vanstone
- 👤 Robert J. Zuccherato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:29
CPC Classifications
H; H04; H04L; H04L9/00; H04L9/08; H04L9/30; H04L9/3006; H04L9/302
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
130 words
A method of encrypting data to be transferred between a pair of parties over a data communication system by making available to one party a public key of the other party that is mathematically related to the private key of the other party, said method including the step of selecting said public key to include a modulus comprising a binary representation of a product of a pair of primes p·q, said binary representation having a plurality of sets of bits, at least one set being of a predetermined pattern of bits corresponding to a portion of said modulus and representative of information exchanged between said parties and supplementary to said modulus and applying said public key to encrypt the message and transferring the encrypted message over said data communication system.
Claim 2
Independent Claim
130 words
A method of encrypting data to be transferred between a pair of parties over a data communication system by making available to one party a public key of the other party that is mathematically related to the private key of the other party, said method including the step of selecting said public key to include a modulus comprising a binary representation of a product of a pair of primes p·q, said binary representation having a plurality of sets of bits, at least one set being of a predetermined pattern of bits corresponding to a portion of said modulus and representative of information exchanged between said parties and supplementary to said modulus and applying said public key to encrypt the message and transferring the encrypted message over said data communication system.
Claim 3
Dependent Claim
21 words
A method according to claim 1 wherein said one set is representative of publicly available information pertaining to said other party.
Claim 4
Dependent Claim
31 words
A method according to claim 2 wherein said one set is retained by said sender and is combined with other of said sets transmitted by said recipient to provide said modulus.
Claim 5
Dependent Claim
19 words
A method according to claim 1 wherein said predetermined configuration is representative of the identity of said other party.
Claim 6
Dependent Claim
37 words
A method according to claim 4 wherein said one set of bits replicates information to be transmitted between said parties in accordance with an encryption protocol whereby the length of transmission between the parties may be reduced.
Claim 7
Dependent Claim
38 words
A method according to claim 1 wherein a pair of sets are of respective predetermined configurations, one of which provides high order bits of said modulus and the other of which provides low order bits of said modulus.
References Cited (Backward Citations)
US4200770A
Cited
US4405829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-10-17 | 2004-04-17 | 2004-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-10-17 | 2008-04-17 | 2008-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-10-17 | 2012-04-17 | 2012-10-17 | $7700.00 | Window Closed / Lapsed |