WO1997035403A3 - Method and apparatus for secure document timestamping - Google Patents

Method and apparatus for secure document timestamping Download PDF

Info

Publication number
WO1997035403A3
WO1997035403A3 PCT/US1997/004587 US9704587W WO9735403A3 WO 1997035403 A3 WO1997035403 A3 WO 1997035403A3 US 9704587 W US9704587 W US 9704587W WO 9735403 A3 WO9735403 A3 WO 9735403A3
Authority
WO
WIPO (PCT)
Prior art keywords
timestamp
time
indicium
computing device
cryptographically
Prior art date
Application number
PCT/US1997/004587
Other languages
French (fr)
Other versions
WO1997035403A2 (en
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 filed Critical
Priority to AU24219/97A priority Critical patent/AU2421997A/en
Priority to EP97919895A priority patent/EP0890238B1/en
Priority to AT97919895T priority patent/ATE298953T1/en
Priority to DE69733644T priority patent/DE69733644T2/en
Publication of WO1997035403A2 publication Critical patent/WO1997035403A2/en
Publication of WO1997035403A3 publication Critical patent/WO1997035403A3/en

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

Abstract

Devices and methods are described for creating a cryptographically assured timestamp that can be verified by a party that was not present during the creation of the timestamp. A computing device (10) receives an indicium of time from a time generator (20) or from an external source via a signal receiver (24); these components may be located in a secure perimeter (70). The computing device (10) cryptographically operates on the indicium of time to generate a timestamp, in response to a request which may be an external signal to an input device (12). The timestamp is outputted by an output device (100). The timestamp is applied to physical documents, and other substrates capable of receiving an optically detectable mark, that are to be transmitted to temporally or spatially distant recipients.
PCT/US1997/004587 1996-03-21 1997-03-21 Method and apparatus for secure document timestamping WO1997035403A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU24219/97A AU2421997A (en) 1996-03-21 1997-03-21 Method and apparatus for secure document timestamping
EP97919895A EP0890238B1 (en) 1996-03-21 1997-03-21 Method and apparatus for secure document timestamping
AT97919895T ATE298953T1 (en) 1996-03-21 1997-03-21 METHOD AND DEVICE FOR SECURE TIME STAMPING OF DOCUMENTS
DE69733644T DE69733644T2 (en) 1996-03-21 1997-03-21 METHOD AND DEVICE FOR SECURING TIME STAMPING OF DOCUMENTS

Applications Claiming Priority (2)

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
US08/622,034 1996-03-21

Publications (2)

Publication Number Publication Date
WO1997035403A2 WO1997035403A2 (en) 1997-09-25
WO1997035403A3 true WO1997035403A3 (en) 1997-12-18

Family

ID=24492678

Family Applications (1)

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

Country Status (6)

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

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US6263438B1 (en) 2001-07-17
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US5923763A (en) 1999-07-13
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