CA2010450A1 - Method for encrypting transmitted data using a unique key - Google Patents

Method for encrypting transmitted data using a unique key

Info

Publication number
CA2010450A1
CA2010450A1 CA2010450A CA2010450A CA2010450A1 CA 2010450 A1 CA2010450 A1 CA 2010450A1 CA 2010450 A CA2010450 A CA 2010450A CA 2010450 A CA2010450 A CA 2010450A CA 2010450 A1 CA2010450 A1 CA 2010450A1
Authority
CA
Canada
Prior art keywords
host computer
terminal
transmitted data
unique key
key
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.)
Granted
Application number
CA2010450A
Other languages
French (fr)
Other versions
CA2010450C (en
Inventor
Martin M. Atalla
Webster Dale Hopkins
Ralph R. Bestock
Jae-Young Kim
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.)
Tandem Computers Inc
Original Assignee
Martin M. Atalla
Webster Dale Hopkins
Ralph R. Bestock
Jae-Young Kim
Tandem Computers Incorporated
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 Martin M. Atalla, Webster Dale Hopkins, Ralph R. Bestock, Jae-Young Kim, Tandem Computers Incorporated filed Critical Martin M. Atalla
Publication of CA2010450A1 publication Critical patent/CA2010450A1/en
Application granted granted Critical
Publication of CA2010450C publication Critical patent/CA2010450C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
    • G06Q20/3829—Payment protocols; Details thereof insuring higher security of transaction involving key management
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/10—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means together with a coded signal, e.g. in the form of personal identification information, like personal identification number [PIN] or biometric data
    • G07F7/1016—Devices or methods for securing the PIN and other transaction-data, e.g. by encryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/083—Network architectures or network communication protocols for network security for authentication of entities using passwords
    • 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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/0822—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using key encryption key
    • 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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
    • 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
    • H04L2209/56—Financial cryptography, e.g. electronic payment or e-cash

Abstract

The invention comprises a method for encrypting data for communication between a host computer and each of a plurality of remote terminals in a network. A method is provided for periodically generating a unique dynamic encryption key for each of said plurality of terminals using a system seed key residing only in the host computer. The dynamic encryption key generated for use by said terminal in encrypting data transmitted to said host computer and for decrypting data received from said host computer.
The method includes storing at said terminal the dynamic key previously generated by said host for said terminal.
CA002010450A 1989-03-14 1990-02-20 Method for encrypting transmitted data using a unique key Expired - Fee Related CA2010450C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/323,485 US4933971A (en) 1989-03-14 1989-03-14 Method for encrypting transmitted data using a unique key
US323,485 1989-03-14

Publications (2)

Publication Number Publication Date
CA2010450A1 true CA2010450A1 (en) 1990-09-14
CA2010450C CA2010450C (en) 1998-08-18

Family

ID=23259404

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002010450A Expired - Fee Related CA2010450C (en) 1989-03-14 1990-02-20 Method for encrypting transmitted data using a unique key

Country Status (6)

Country Link
US (1) US4933971A (en)
EP (1) EP0387599B1 (en)
JP (1) JPH0334641A (en)
AU (1) AU617598B2 (en)
CA (1) CA2010450C (en)
DE (1) DE69022610T2 (en)

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Also Published As

Publication number Publication date
DE69022610T2 (en) 1996-05-02
US4933971A (en) 1990-06-12
AU617598B2 (en) 1991-11-28
CA2010450C (en) 1998-08-18
JPH0334641A (en) 1991-02-14
EP0387599A3 (en) 1993-12-22
EP0387599A2 (en) 1990-09-19
DE69022610D1 (en) 1995-11-02
EP0387599B1 (en) 1995-09-27
AU5124990A (en) 1990-09-20

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