Patent US6171797B1 successfully refreshed from Google Patents.
Patent US6615348B1 successfully refreshed from Google Patents.
US6615348B1
Expired / Lapsed
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Method and apparatus for an adapted digital signature
Assignee: Intel Corp
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Filing: 1999-04-16
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Granted: 2003-09-02
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Expires: 2019-04-16
Abstract
Abstract A method and apparatus for an authenticated electronic userid comprising an adapted digital signature is provided. According to an aspect of the present invention, the adapted digital signature is generated using a secure hash function and an adaptation algorithm. According to one embodiment, a method for creating an adapted digital signature comprises retrieving an originator key, said originator key corresponding to a local userid; running a digital signature engine to create a digital signature, said digital signature based on at least said originator key and remote user information; retrieving a word from a word list, said word corresponding to at least a portion of said digital signature; and returning at least said word as said adapted digital signature.
Inventors
- 👤 Benjamin K. Gibbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:30
CPC Classifications
H; H04; H04L; H04L63/00; H04L63/02; H04L63/0227; H04L51/00; H04L51/21; H04L51/212; H04L63/12; H04L63/126
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
75 words
A method for creating an adapted digital signature comprising: retrieving an originator key, said originator key corresponding to a local userid; running a digital signature engine to create a digital signature, said digital signature based on at least said originator key and remote user information; retrieving a word from a word list, said word corresponding to at least a portion of said digital signature; and returning at least said word as said adapted digital signature.
Claim 2
Independent Claim
75 words
A method for creating an adapted digital signature comprising: retrieving an originator key, said originator key corresponding to a local userid; running a digital signature engine to create a digital signature, said digital signature based on at least said originator key and remote user information; retrieving a word from a word list, said word corresponding to at least a portion of said digital signature; and returning at least said word as said adapted digital signature.
Claim 3
Dependent Claim
34 words
The method of claim 1 , further comprising performing a boolean function on said digital signature to create a modified digital signature, and wherein said word is retrieved based upon said modified digital signature.
Claim 4
Dependent Claim
23 words
The method of claim 1 , further comprising generating a number; and appending said number to said word form said adapted digital signature.
Claim 5
Dependent Claim
21 words
The method of claim 1 , further comprising concatenating said adapted digital signature with said local userid and a domain name.
Claim 6
Dependent Claim
49 words
The method of claim 1 , wherein running said digital signature engine includes performing a one-way hash function, said one-way hash function using at least said originator key and said remote user information, said one-way hash function generating a hash value, and said hash value being said digital signature.
Claim 7
Independent Claim
107 words
A method for verifying an adapted digital signature comprising: retrieving an originator key based on a first portion of address information; generating an adapted digital signature, said act of generating comprising: creating a digital signature based on at least said originator key and a second portion of said address information; retrieving a word from a word list, said word corresponding to said digital signature; and returning at least said word as said adapted digital signature; comparing a third portion of said address information to said adapted digital signature; and accepting said electronic message if said third portion of said address information and said adapted digital signature match.
Claim 8
Independent Claim
107 words
A method for verifying an adapted digital signature comprising: retrieving an originator key based on a first portion of address information; generating an adapted digital signature, said act of generating comprising: creating a digital signature based on at least said originator key and a second portion of said address information; retrieving a word from a word list, said word corresponding to said digital signature; and returning at least said word as said adapted digital signature; comparing a third portion of said address information to said adapted digital signature; and accepting said electronic message if said third portion of said address information and said adapted digital signature match.
Claim 9
Dependent Claim
49 words
The method of claim 6 , further comprising: testing said first portion of said address information to determine whether a local user identified by said receiver information employs authenticated message server services; and accepting said electronic message if said local user does not employ said authenticated message server services.
Claim 10
Dependent Claim
31 words
The method of claim 6 , wherein said second portion of said address information includes a sender domain name and said first portion of said address information includes a local userid.
Claim 11
Dependent Claim
58 words
The method of claim 6 , wherein generating said adapted digital signature further comprises: creating a modified digital signature from said digital signature, said modified digital signature created with a boolean function, and wherein said word is retrieved from said word list based upon said modified digital signature; generating a number; and appending said number to said word.
Claim 12
Dependent Claim
51 words
The method of claim 6 , wherein creating said digital signature includes executing a one-way hash function, said one-way hash function using at least said originator key and said second portion of said address information, said one-way hash function generating a hash value, and said hash value being said digital signature.
Claim 13
Dependent Claim
150 words
A electronic message system comprising: an authenticated message server, said authenticated message server configured to remove an inbound electronic message if an authenticated electronic userid cannot be verified, said inbound electronic message including address information; and a mail host coupled to said authenticated message server; wherein said authenticated message server is configured to remove said inbound electronic message by performing the acts of: generating an adapted digital signature, said act of generating comprising: creating a digital signature based on at least an originator key and a first portion of said address information; retrieving a word from a word list, said word corresponding to said digital signature; and returning said word as said adapted digital signature; comparing a second portion of said address information to said adapted digital signature; and rejecting said inbound electronic message if said second portion of said address information and said adapted digital signature do not match.
Claim 14
Dependent Claim
150 words
A electronic message system comprising: an authenticated message server, said authenticated message server configured to remove an inbound electronic message if an authenticated electronic userid cannot be verified, said inbound electronic message including address information; and a mail host coupled to said authenticated message server; wherein said authenticated message server is configured to remove said inbound electronic message by performing the acts of: generating an adapted digital signature, said act of generating comprising: creating a digital signature based on at least an originator key and a first portion of said address information; retrieving a word from a word list, said word corresponding to said digital signature; and returning said word as said adapted digital signature; comparing a second portion of said address information to said adapted digital signature; and rejecting said inbound electronic message if said second portion of said address information and said adapted digital signature do not match.
Claim 15
Dependent Claim
27 words
The electronic message system of claim 11 , further comprising a mail exchanger coupled to said authenticated message server and configured to receive said inbound electronic message.
Claim 16
Dependent Claim
43 words
The electronic message system of claim 11 , wherein said authenticated message server is configured to perform the act of parsing sender information and receiver information from said address information, said receiver information including a local userid and a second adapted digital signature.
Claim 17
Dependent Claim
52 words
The electronic message system of claim 11 , wherein creating said digital signature includes executing a one-way hash function, said one-way hash function using at least said originator key and a portion of said address information, said one-way hash function generating a hash value, and said hash value being said digital signature.
Claim 18
Dependent Claim
45 words
The electronic message system of claim 11 , wherein said act of generating said adapted digital signature further comprises performing a boolean function on said digital signature to create a modified digital signature, and wherein said word is retrieved based on said modified digital signature.
Claim 19
Dependent Claim
37 words
The electronic message system of claim 11 , wherein said authenticated message server is further configured to perform the acts of: generating a number; and appending said number to said word to form said adapted digital signature.
References Cited (Backward Citations)
US4405829A
Cited
US4281215A
Cited
US4309569A
Cited
US4713780A
Cited
US5319710A
Cited
US4881264A
Cited
US4934846A
Cited
US5093918A
Cited
US4977595A
Cited
US5377354A
Cited
US5224164A
Cited
US5204961A
Cited
US5142577A
Cited
US5349649A
Cited
US5231668A
Cited
US5371796A
Cited
US5542046A
Cited
US5307412A
Cited
US5351293A
Cited
US5367573A
Cited
US5592553A
Cited
US5432852A
Cited
US5473691A
Cited
US5493692A
Cited
US5434918A
Cited
US5606668A
Cited
US5539826A
Cited
US5857022A
Cited
US5537475A
Cited
US5479514A
Cited
US5604803A
Cited
US5732137A
Cited
US5619648A
Cited
US5787178A
Cited
US5852665A
Cited
US5867578A
Cited
US5638446A
Cited
US5943426A
Cited
US5764772A
Cited
US5754659A
Cited
US5826022A
Cited
US5751813A
Cited
US5740361A
Cited
WO1997046962A1
Cited
US5850446A
Cited
WO1997049251A1
Cited
WO1998000787A1
Cited
WO1998018249A1
Cited
US5958051A
Cited
US5892904A
Cited
WO1998037680A2
Cited
WO1998051064A1
Cited
WO1998051116A2
Cited
WO1999004344A1
Cited
US6356935B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-09-01 | 2007-03-03 | 2007-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-09-01 | 2011-03-03 | 2011-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-09-01 | 2015-03-03 | 2015-09-02 | $7700.00 | Window Closed / Lapsed |