US6574658B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
System and method for secure classification of electronic mail
Assignee: Alcatel Lucent SAS
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Filing: 1999-01-29
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Granted: 2003-06-03
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Expires: 2019-01-29
Abstract
Abstract A system for, and method of, generating an extended source electronic mail (e-mail) address for use between a sender and a recipient and systems and methods for creating e-mail messages having a destination-dependent extended source address structure. In one embodiment, the system includes: (1) an extension generator module, associated with the sender, that generates a valid extended source address that is based on the identity of the recipient, (2) an e-mail transmitter, associated with the extension generator module, that transmits the e-mail message containing the valid extended source address to the recipient and (3) a message receiver module, associated with the extension generator module, that classifies incoming e-mail messages based on valid extended source addresses.
Inventors
- 👤 Eran Gabber
- 👤 Bjorn M. Jakobsson
- 👤 Yossi Matias
- 👤 Alain J. Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:35
CPC Classifications
G; G06; G06Q; G06Q10/00; G06Q10/10; G06Q10/107; H; H04; H04L; H04L51/00; H04L51/21; H04L51/212; H04L51/42; H04L51/48
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
90 words
A system for generating an extended source address for use with electronic mail (e-mail) between a sender and a recipient, comprising: an extension generator module, associated with said sender, that generates a valid extended source address that is based on an identity of said recipient; an e-mail transmitter, associated with said extension generator module, that transmits said e-mail message containing said valid extended source address to said recipient; and a message receiver module, associated with said extension generator module, that classifies incoming e-mail messages based on valid extended destination addresses.
Claim 2
Independent Claim
90 words
A system for generating an extended source address for use with electronic mail (e-mail) between a sender and a recipient, comprising: an extension generator module, associated with said sender, that generates a valid extended source address that is based on an identity of said recipient; an e-mail transmitter, associated with said extension generator module, that transmits said e-mail message containing said valid extended source address to said recipient; and a message receiver module, associated with said extension generator module, that classifies incoming e-mail messages based on valid extended destination addresses.
Claim 3
Dependent Claim
22 words
The system as recited in claim 1 further comprising a handshake module that applies for a valid destination address from said recipient.
Claim 4
Dependent Claim
31 words
The system as recited in claim 2 further comprising a destination lookup module, associated with said handshake module, that stores said valid destination address for future messages sent to said recipient.
Claim 5
Dependent Claim
39 words
The system as recited in claim 2 wherein said extension generator module further shares a key with said message receiver module, said key being employed to generate valid extended source addresses and verify destination addresses of incoming e-mail messages.
Claim 6
Dependent Claim
38 words
The system as recited in claim 1 further comprising a handshake module, associated with said extension generator module and containing said e-mail transmitter, that receives said first e-mail message and manages generation of said valid extended source address.
Claim 7
Dependent Claim
41 words
The system as recited in claim 1 further comprising a hypertext transfer protocol proxy, associated with said sender and containing said extension generator module, that computes said valid extended source address when said sender registers at a World Wide Web site.
Claim 8
Dependent Claim
34 words
The system as recited in claim 1 further comprising a state information database containing a counter corresponding to said recipient, said valid extended source address further being based on a value of said counter.
Claim 9
Dependent Claim
35 words
The system as recited in claim 6 further comprising a hypertext transfer protocol server, coupled to said state information database, that controls said extension generator module and allows manual requests for said valid extended address.
Claim 10
Dependent Claim
17 words
The system as recited in claim 5 wherein said system confirms that said sender incurred a cost.
Claim 11
Dependent Claim
18 words
The system as recited in claim 8 wherein said system confirms that said manual requests incurred a cost.
Claim 12
Dependent Claim
35 words
The system as recited in claim 1 wherein said extended source address is revocable by said sender, said message receiver module further classifying incoming e-mail messages based on a list of revoked extended source addresses.
Claim 13
Independent Claim
81 words
A method of generating an extended source address for use with electronic mail (e-mail), comprising: generating, in response to a first e-mail message from said recipient, an valid extended source address that is based on said identity of said recipient; transmitting a second e-mail message containing said valid extended source address to said recipient for use by said recipient as a destination address in future messages to said sender; and classifying incoming e-mail messages based on associated valid extended destination addresses.
Claim 14
Independent Claim
81 words
A method of generating an extended source address for use with electronic mail (e-mail), comprising: generating, in response to a first e-mail message from said recipient, an valid extended source address that is based on said identity of said recipient; transmitting a second e-mail message containing said valid extended source address to said recipient for use by said recipient as a destination address in future messages to said sender; and classifying incoming e-mail messages based on associated valid extended destination addresses.
Claim 15
Dependent Claim
18 words
The method as recited in claim 12 further comprising applying for a valid destination address from said recipient.
Claim 16
Dependent Claim
21 words
The method as recited in claim 13 further comprising storing said valid destination address for future messages sent to said recipient.
Claim 17
Dependent Claim
36 words
The method as recited in claim 13 further comprising further sharing a key with said message receiver module, said key being employed to generate valid extended source addresses and verify destination addresses of incoming e-mail messages.
Claim 18
Dependent Claim
23 words
The method as recited in claim 12 further comprising receiving said first e-mail message and managing generation of said valid extended source address.
Claim 19
Dependent Claim
25 words
The method as recited in claim 12 further comprising computing said valid extended source address when said sender registers at a World Wide Web site.
Claim 20
Dependent Claim
35 words
The method as recited in claim 12 further comprising activating a counter corresponding to said recipient in a state information database, said valid extended source address further being based on a value of said counter.
Claim 21
Dependent Claim
23 words
The method as recited in claim 17 further comprising controlling said extension generator module and allowing manual requests for said valid extended address.
Claim 22
Dependent Claim
16 words
The method as recited in claim 16 further comprising confirming that said sender incurred a cost.
Claim 23
Dependent Claim
17 words
The method as recited in claim 19 further comprising confirming that said manual requests incurred a cost.
Claim 24
Dependent Claim
33 words
The method as recited in claim 12 wherein said extended source address is revocable by said sender, said method comprising classifying incoming e-mail messages based on a list of revoked extended source addresses.
Claim 25
Dependent Claim
116 words
A mail transfer agent for processing electronic mail (e-mail) between a sender and a recipient, comprising: an extension generator module, associated with said sender, that generates, in response to a first e-mail message from said recipient, an valid extended source address that is based on an identity of said recipient; a destination lookup module, associated with said extension generator module, that stores said valid extended source address for future use; a handshake module, associated with said extension generator module, that receives said first e-mail message and manages generation of said valid extended source address; and a message receiver module, associated with said extension generator module, that classifies incoming e-mail messages based on valid extended source addresses.
Claim 26
Dependent Claim
116 words
A mail transfer agent for processing electronic mail (e-mail) between a sender and a recipient, comprising: an extension generator module, associated with said sender, that generates, in response to a first e-mail message from said recipient, an valid extended source address that is based on an identity of said recipient; a destination lookup module, associated with said extension generator module, that stores said valid extended source address for future use; a handshake module, associated with said extension generator module, that receives said first e-mail message and manages generation of said valid extended source address; and a message receiver module, associated with said extension generator module, that classifies incoming e-mail messages based on valid extended source addresses.
Claim 27
Dependent Claim
25 words
The agent as recited in claim 23 wherein said destination lookup module further stores a shared key employable to generate said valid extended source address.
Claim 28
Dependent Claim
41 words
The agent as recited in claim 23 further comprising a hypertext transfer protocol proxy, associated with said sender and containing said extension generator module, that computes said valid extended source address when said sender registers at a World Wide Web site.
Claim 29
Dependent Claim
34 words
The agent as recited in claim 23 further comprising a state information database containing a counter corresponding to said recipient, said valid extended source address further being based on a value of said counter.
Claim 30
Dependent Claim
36 words
The agent as recited in claim 26 further comprising a hypertext transfer protocol server, coupled to said state information database, that controls said extension generator module and allows manual requests for said valid extended source address.
Claim 31
Dependent Claim
24 words
The agent as recited in claim 26 further comprising a blacklist, associated with said extension generator module, that contains extended source addresses to block.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-06-02 | 2006-12-02 | 2007-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-06-02 | 2010-12-02 | 2011-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-06-02 | 2014-12-02 | 2015-06-03 | $7700.00 | Window Closed / Lapsed |