ATE128258T1 - METHOD FOR SECURING SECRET CODE DATA STORED IN A DATA MEMORY AND CIRCUIT ARRANGEMENT FOR IMPLEMENTING THE METHOD. - Google Patents

METHOD FOR SECURING SECRET CODE DATA STORED IN A DATA MEMORY AND CIRCUIT ARRANGEMENT FOR IMPLEMENTING THE METHOD.

Info

Publication number
ATE128258T1
ATE128258T1 AT89101292T AT89101292T ATE128258T1 AT E128258 T1 ATE128258 T1 AT E128258T1 AT 89101292 T AT89101292 T AT 89101292T AT 89101292 T AT89101292 T AT 89101292T AT E128258 T1 ATE128258 T1 AT E128258T1
Authority
AT
Austria
Prior art keywords
code data
data memory
implementing
circuit arrangement
secret code
Prior art date
Application number
AT89101292T
Other languages
German (de)
Inventor
Hartmut Dr Schrenk
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of ATE128258T1 publication Critical patent/ATE128258T1/en

Links

Classifications

    • 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
    • G07F7/1008—Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system
    • 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
    • G07F7/1025—Identification of user by a PIN code

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Storage Device Security (AREA)
  • Control Of El Displays (AREA)
  • Electric Clocks (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

The invention relates to a method and circuitry for securing code data stored in a code data memory (1a) prior to analysis, in which the signals at the code data memory outputs provide an indication of the contents of the code data memory. According to the invention, a blocking circuit (4), controlled by a blocking logic circuit (9), is provided at the code data memory outputs, which it blocks as soon as entered control data fails to match the code data. <IMAGE>
AT89101292T 1988-02-25 1989-01-25 METHOD FOR SECURING SECRET CODE DATA STORED IN A DATA MEMORY AND CIRCUIT ARRANGEMENT FOR IMPLEMENTING THE METHOD. ATE128258T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3805977 1988-02-25

Publications (1)

Publication Number Publication Date
ATE128258T1 true ATE128258T1 (en) 1995-10-15

Family

ID=6348186

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89101292T ATE128258T1 (en) 1988-02-25 1989-01-25 METHOD FOR SECURING SECRET CODE DATA STORED IN A DATA MEMORY AND CIRCUIT ARRANGEMENT FOR IMPLEMENTING THE METHOD.

Country Status (6)

Country Link
EP (1) EP0329966B1 (en)
AT (1) ATE128258T1 (en)
DE (1) DE58909440D1 (en)
DK (1) DK169883B1 (en)
ES (1) ES2077566T3 (en)
FI (1) FI100068B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2941361B2 (en) * 1990-06-07 1999-08-25 株式会社東芝 Portable electronic devices
FR2789774B1 (en) * 1999-02-11 2001-04-20 Bull Cp8 SECURE COMPARISON METHOD OF TWO MEMORY REGISTERS, AND SECURITY MODULE IMPLEMENTING SAID METHOD

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3761892A (en) * 1971-07-19 1973-09-25 R Bosnyak Electronic locking system
US3829833A (en) * 1972-10-24 1974-08-13 Information Identification Co Code element identification method and apparatus
FR2311365A1 (en) * 1975-05-13 1976-12-10 Innovation Ste Int SYSTEM FOR TRANSFERRING AND STORING DATA IN A PERSONAL AND CONFIDENTIAL WAY BY MEANS OF PORTABLE INDEPENDENT ELECTRONIC OBJECTS
EP0207320B1 (en) * 1985-07-03 1990-05-09 Siemens Aktiengesellschaft Integrated circuit and method to protect secret data
JPS6267800A (en) * 1985-09-20 1987-03-27 Hitachi Ltd Semiconductor integrated circuit device

Also Published As

Publication number Publication date
FI100068B (en) 1997-09-15
FI890900A0 (en) 1989-02-24
DE58909440D1 (en) 1995-10-26
ES2077566T3 (en) 1995-12-01
EP0329966B1 (en) 1995-09-20
DK169883B1 (en) 1995-03-20
FI890900A (en) 1989-08-26
EP0329966A1 (en) 1989-08-30
DK728088D0 (en) 1988-12-29
DK728088A (en) 1989-08-26

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