DE69733644D1 - Verfahren und vorrichtung zum gesicherten zeitstempeln von dokumenten - Google Patents

Verfahren und vorrichtung zum gesicherten zeitstempeln von dokumenten

Info

Publication number
DE69733644D1
DE69733644D1 DE69733644T DE69733644T DE69733644D1 DE 69733644 D1 DE69733644 D1 DE 69733644D1 DE 69733644 T DE69733644 T DE 69733644T DE 69733644 T DE69733644 T DE 69733644T DE 69733644 D1 DE69733644 D1 DE 69733644D1
Authority
DE
Germany
Prior art keywords
documents
time stamping
securing time
determining
caller
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
Application number
DE69733644T
Other languages
English (en)
Other versions
DE69733644T2 (de
Inventor
S Walker
Bruce Schneier
A Jorasch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Walker Asset Management LP
Original Assignee
Walker Asset Management LP
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Walker Asset Management LP filed Critical Walker Asset Management LP
Publication of DE69733644D1 publication Critical patent/DE69733644D1/de
Application granted granted Critical
Publication of DE69733644T2 publication Critical patent/DE69733644T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/004—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using digital security elements, e.g. information coded on a magnetic thread or strip
    • G07D7/0047—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using digital security elements, e.g. information coded on a magnetic thread or strip using checkcodes, e.g. coded numbers derived from serial number and denomination
    • 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
    • H04L9/3236—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 using cryptographic hash functions
    • H04L9/3242—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 using cryptographic hash functions involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC
    • 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
    • H04L9/3271—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 using challenge-response
    • 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
    • H04L2209/80—Wireless
    • H04L2209/805—Lightweight hardware, e.g. radio-frequency identification [RFID] or sensor
    • 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
    • H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees
DE69733644T 1996-03-21 1997-03-21 Verfahren und vorrichtung zum gesicherten zeitstempeln von dokumenten Expired - Lifetime DE69733644T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/622,034 US5923763A (en) 1996-03-21 1996-03-21 Method and apparatus for secure document timestamping
US622034 1996-03-21
PCT/US1997/004587 WO1997035403A2 (en) 1996-03-21 1997-03-21 Method and apparatus for secure document timestamping

Publications (2)

Publication Number Publication Date
DE69733644D1 true DE69733644D1 (de) 2005-08-04
DE69733644T2 DE69733644T2 (de) 2006-05-18

Family

ID=24492678

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69733644T Expired - Lifetime DE69733644T2 (de) 1996-03-21 1997-03-21 Verfahren und vorrichtung zum gesicherten zeitstempeln von dokumenten

Country Status (6)

Country Link
US (5) US5923763A (de)
EP (1) EP0890238B1 (de)
AT (1) ATE298953T1 (de)
AU (1) AU2421997A (de)
DE (1) DE69733644T2 (de)
WO (1) WO1997035403A2 (de)

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USRE42018E1 (en) 2010-12-28
ATE298953T1 (de) 2005-07-15
USRE42893E1 (en) 2011-11-01
US6263438B1 (en) 2001-07-17
EP0890238A2 (de) 1999-01-13
WO1997035403A2 (en) 1997-09-25
US5923763A (en) 1999-07-13
EP0890238B1 (de) 2005-06-29
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USRE41960E1 (en) 2010-11-23
DE69733644T2 (de) 2006-05-18

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