USRE34954E - Method for secure time-stamping of digital documents - Google Patents
Method for secure time-stamping of digital documents Download PDFInfo
- Publication number
- USRE34954E USRE34954E US08/156,120 US15612093A USRE34954E US RE34954 E USRE34954 E US RE34954E US 15612093 A US15612093 A US 15612093A US RE34954 E USRE34954 E US RE34954E
- Authority
- US
- United States
- Prior art keywords
- digital
- time
- document
- digital document
- stamping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3297—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving time stamps, e.g. generation of time stamps
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/60—Digital content management, e.g. content distribution
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Storage Device Security (AREA)
- Document Processing Apparatus (AREA)
Abstract
Description
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<n/d>=<43200677821428109, 29403602422449791>(Private)
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2fe8768ef3532f15c40acf1341902cle mod 1000
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/156,120 USRE34954E (en) | 1990-08-02 | 1993-11-22 | Method for secure time-stamping of digital documents |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/561,888 US5136647A (en) | 1990-08-02 | 1990-08-02 | Method for secure time-stamping of digital documents |
US08/156,120 USRE34954E (en) | 1990-08-02 | 1993-11-22 | Method for secure time-stamping of digital documents |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/561,888 Reissue US5136647A (en) | 1990-08-02 | 1990-08-02 | Method for secure time-stamping of digital documents |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE34954E true USRE34954E (en) | 1995-05-30 |
Family
ID=24243913
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/561,888 Ceased US5136647A (en) | 1990-08-02 | 1990-08-02 | Method for secure time-stamping of digital documents |
US08/156,120 Expired - Lifetime USRE34954E (en) | 1990-08-02 | 1993-11-22 | Method for secure time-stamping of digital documents |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/561,888 Ceased US5136647A (en) | 1990-08-02 | 1990-08-02 | Method for secure time-stamping of digital documents |
Country Status (1)
Country | Link |
---|---|
US (2) | US5136647A (en) |
Cited By (114)
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US5903651A (en) * | 1996-05-14 | 1999-05-11 | Valicert, Inc. | Apparatus and method for demonstrating and confirming the status of a digital certificates and other data |
US5923763A (en) * | 1996-03-21 | 1999-07-13 | Walker Asset Management Limited Partnership | Method and apparatus for secure document timestamping |
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WO2000074300A1 (en) * | 1999-06-01 | 2000-12-07 | The Regents Of The University Of California | System and method for delivering and examining digital tickets |
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US20020029248A1 (en) * | 2000-03-17 | 2002-03-07 | Cook Jon L. | Method and systems for providing a secure electronic mailbox |
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US6370250B1 (en) | 1998-10-29 | 2002-04-09 | International Business Machines Corporation | Method of authentication and storage of private keys in a public key cryptography system (PKCS) |
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US20020073113A1 (en) * | 2000-10-13 | 2002-06-13 | Caraher William Frederick | Computer-implemented collaborative record-keeping system and method |
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US20020165824A1 (en) * | 1995-10-02 | 2002-11-07 | Silvio Micali | Scalable certificate validation and simplified PKI management |
US20030033295A1 (en) * | 2001-07-11 | 2003-02-13 | Adler Marc Stephen | Method for analyzing and recording innovations |
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US20040022523A1 (en) * | 2002-01-18 | 2004-02-05 | Duerr Thomas E. | Digital video authenticator |
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US20040133524A1 (en) * | 2001-04-12 | 2004-07-08 | Chamberlain Charles R. | Systems and methods for electronic postmarking of data including location data |
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US6993656B1 (en) | 1999-12-10 | 2006-01-31 | International Business Machines Corporation | Time stamping method using aged time stamp receipts |
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