US6088797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamper-proof electronic processing device
Assignee: Citibank NA
•
Filing: 1998-08-21
•
Granted: 2000-07-11
•
Expires: 2018-08-21
Abstract
Abstract A system for open electronic commerce having a customer trusted agent securely communicating with a first money module, and a merchant trusted agent securely communicating with a second money module. Both trusted agents are capable of establishing a first cryptographically secure session, and both money modules are capable of establishing a second cryptographically secure session. The merchant trusted agent transfers electronic merchandise to the customer trusted agent, and the first money module transfers electronic money to the second money module. The money modules inform their trusted agents of the successful completion of payment, and the customer may use the purchased electronic merchandise.
Inventors
- 👤 Sholom S. Rosen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:09
CPC Classifications
G; G06; G06Q; G06Q20/00; G06Q20/02; G06Q20/04; G06Q20/06; G06Q20/08; G06Q20/10; G06Q20/12; G06Q20/22; G06Q20/26; G06Q20/30; G06Q20/36; G06Q20/367; G06Q20/3674; G06Q30/00; G06Q30/06; G07; G07F; G07F17/00; G07F17/16; G07F7/00; G07F7/08; G07F7/0866; H; H04; H04L; H04L9/00; H04L9/32; H04L9/321; H04L9/3213; H04L9/3263; H04L2209/00; H04L2209/56
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
104 words
A tamper-proof electronic processing device comprising: an electronic processor; a digital certificate, having a public key, stored within said electronic processing device and uniquely designated to said electronic processing device; a ticket stored within said electronic processing device, where said ticket comprises an electronic data item that identifies an electronic object, specifies restrictions on usage of said electronic object, includes a digital signature on said electronic object, and is uniquely designated to said electronic processing device; a key generator that generates a cryptographic key pair including said public key; and a communication interface that connects said electronic processing device with another electronic processing device.
Claim 2
Dependent Claim
104 words
A tamper-proof electronic processing device comprising: an electronic processor; a digital certificate, having a public key, stored within said electronic processing device and uniquely designated to said electronic processing device; a ticket stored within said electronic processing device, where said ticket comprises an electronic data item that identifies an electronic object, specifies restrictions on usage of said electronic object, includes a digital signature on said electronic object, and is uniquely designated to said electronic processing device; a key generator that generates a cryptographic key pair including said public key; and a communication interface that connects said electronic processing device with another electronic processing device.
Claim 3
Dependent Claim
11 words
The device of claim 1, wherein said electronic object is software.
Claim 4
Dependent Claim
12 words
The device of claim 1, wherein said key generator generates random numbers.
Claim 5
Dependent Claim
19 words
The device of claim 1, wherein said electronic processing devices include means for committing and aborting a transfer transaction.
Claim 6
Dependent Claim
12 words
The device of claim 1, wherein said ticket is a decryption ticket.
Claim 7
Dependent Claim
14 words
The device of claim 1, wherein said ticket includes an electronic object decryption key.
Claim 8
Dependent Claim
22 words
The device of claim 1, wherein said electronic processing device is adapted to transfer said ticket to said other electronic processing device.
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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) | 2003-07-11 | 2004-01-10 | 2004-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-11 | 2008-01-10 | 2008-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-11 | 2012-01-10 | 2012-07-11 | $7700.00 | Window Closed / Lapsed |