Patent US5949879A successfully refreshed from Google Patents.
US5949879A
Expired / Lapsed
US
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Auditable security system for the generation of cryptographically protected digital data
Assignee: Pitney Bowes Inc
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Filing: 1996-09-06
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Granted: 1999-09-07
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Expires: 2016-09-06
Abstract
Abstract A secure system for Authentication information. The system includes a scanner for reading the information contained in a document, a timing mechanism for entering the time the document was read, an encryptor for encrypting the read and timed information and a counter for counting the number of documents processed.
Inventors
- 👤 William Berson
- 👤 Elizabeth Bernobich
- 👤 Richard W. Heiden
- 👤 Richard A. Potoczek
- 👤 Robert W. Sisson
- 👤 Anthony F. Violante
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:30
CPC Classifications
G; G07; G07B; G07B17/00; G07B17/00733; H; H04; H04L; H04L9/00; H04L9/32; H04L9/3297; G07B2017/0079; G07B2017/00798
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
71 words
A system for authenticating information, said system comprising: means for reading the information contained in a document; means coupled to said reading means for securely time stamping read information; means coupled to said reading means for securely coding the information read from the document; means coupled to said coding means for securely counting the number of documents coded by said coding means; and means for printing program updates on the documents.
Claim 2
Independent Claim
71 words
A system for authenticating information, said system comprising: means for reading the information contained in a document; means coupled to said reading means for securely time stamping read information; means coupled to said reading means for securely coding the information read from the document; means coupled to said coding means for securely counting the number of documents coded by said coding means; and means for printing program updates on the documents.
Claim 3
Dependent Claim
15 words
The system claimed in claim 1, wherein the coded information is an encrypted bar code.
Claim 4
Dependent Claim
24 words
The system claimed in claim 1 further including a means for printing wherein the print means prints the represented information as a digital signal.
Claim 5
Dependent Claim
14 words
The system claimed in claim 1, wherein the coded information is an authentic symbol.
Claim 6
Dependent Claim
16 words
The system claimed in claim 4, wherein the authentication symbol is printed with an invisible ink.
Claim 7
Dependent Claim
15 words
The system claimed in claim 4, wherein the authentication symbol is a binary data stream.
Claim 8
Dependent Claim
18 words
The system in claim 1, wherein the means for printing program updates further includes a certificate of revocation.
Claim 9
Dependent Claim
13 words
The system in claim 1, wherein the means for printing prints client updates.
Claim 10
Dependent Claim
19 words
The system claimed in claim 1, wherein the means for printing further includes: concatenated header information; and update information.
Claim 11
Dependent Claim
83 words
The system claimed in claim 1, wherein the means for printing comprises: a computer that generates a key distribution certificate by creating a master distribution public key pair and a session distribution key pair; a encryptor/decryptor coupled to said computer, said encryptor/decryptor encrypts the session distribution public key with the master distribution private key and encrypts the master distribution public key with the session distribution private key; means coupled to said encryptor/decryptor for producing symbols that represent the information encrypted by said encryptor/decryptor.
Claim 12
Dependent Claim
15 words
The system claimed in claim 10, wherein said symbol means comprises: a bar code generator.
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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) | 2002-09-06 | 2003-03-08 | 2003-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-06 | 2007-03-08 | 2007-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-06 | 2011-03-08 | 2011-09-07 | $7700.00 | Window Closed / Lapsed |