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KR920704477A - 합법증명서를 이용한 신원확인용 방법 및 시스템 - Google Patents

합법증명서를 이용한 신원확인용 방법 및 시스템

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KR920704477A
KR920704477A KR1019920701077A KR920701077A KR920704477A KR 920704477 A KR920704477 A KR 920704477A KR 1019920701077 A KR1019920701077 A KR 1019920701077A KR 920701077 A KR920701077 A KR 920701077A KR 920704477 A KR920704477 A KR 920704477A
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personal identification
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KR0177831B1 (ko
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플랭크 톰슨 리이톤
실비오 미쉘리
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플랭크 톰슨 리이톤
실비오 미쉘리
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
    • G06Q20/34—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using cards, e.g. integrated circuit [IC] cards or magnetic cards
    • G06Q20/347—Passive cards
    • 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06Q20/40—Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06Q20/40—Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
    • G06Q20/401—Transaction verification
    • G06Q20/4012—Verifying personal identification numbers [PIN]
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/22—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder
    • G07C9/25—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition
    • G07C9/253—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition visually
    • 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
    • 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
    • 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
    • G07F7/1058—PIN is checked locally
    • G07F7/1066—PIN data being compared to data on card
    • 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
    • H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
    • H04L9/304—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy based on error correction codes, e.g. McEliece
    • 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
    • H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
    • H04L9/3066—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy involving algebraic varieties, e.g. elliptic or hyper-elliptic curves
    • H04L9/3073—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy involving algebraic varieties, e.g. elliptic or hyper-elliptic curves involving pairings, e.g. identity based encryption [IBE], bilinear mappings or bilinear pairings, e.g. Weil or Tate pairing
    • 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
    • H04L9/3218—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 proof of knowledge, e.g. Fiat-Shamir, GQ, Schnorr, ornon-interactive zero-knowledge proofs
    • 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
    • H04L9/3226—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 a predetermined code, e.g. password, passphrase or PIN
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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    • 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
    • H04L9/3247—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 digital signatures
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    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S283/00—Printed matter
    • Y10S283/904—Credit card

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  • Credit Cards Or The Like (AREA)
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Abstract

내용 없음.

Description

합법증명서를 이용한 신원확인용 방법 및 시스템
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 신원확인 카드의 한 유형을 대략 도시한 것으로 상기 카드는 확인 카드의 인가된 이용자의 물리적 특징의 그림을 내재한다.
제1A도는 확인카드의 그림의 일부에 만들어진 패스워드를 도시한 제1도의 신원확인카드의 자력선의 부분을 표시하는 다이어그램이다.
제2도는 제1도에 도시한 바와 같은 인가된 신원확인카드를 발급하기 위한 본 발명의 바람직한 방법의 일반적인 플로우 차트이다.
제3도는 제2도의 디지탈 부호 루틴의 상세한 플로우 차트이다.
제3A도는 전용키이(P1,P2)의 비밀 기본번호를 선택하기 위한 루틴의 플로우차트이다.

Claims (17)

  1. 개인용 확인카드 정당 사용자가 처리 단말기를 사용하여 확인처리를 수행하도록 하는 방법에 있어서, 정당 사용자의 외부적 특징으로부터 도출된 그리고 비밀로 유지될 필요가 없는 부분을 갖는 제1데이타 열을 발생시키는 단계와, 상기 제1데이타 열에 대응하는 부호를 발생시키기 위해서 제1데이타 열을 디지탈로 사이닝하는 단계와, 인로드된 제1 및 제2데이타 열/부호를 발생시키기 위해서 선정된 인코딩 기능을 사용하여 제1데이타 열 및 부호를 인코딩하는 단계와, 개인용 확인 카드에 인코드된 제1데이타 열/부호를 저장하는 단계와, 처리 단자에서 개인용 확인을 수용하는 단계와, 제1데이타 열 및 수신된 부호를 발생시키기 위해 수용된 개인용 확인 카드에서 인코드된 제1데이타를 디코딩하는 단계와, 수신된 부호가 제1데이타 열로부터 발생될 수 있는지를 디지탈로 확인하는 단계와, 상기 수신된 부호가 제1데이타 열로부터 발생될 수 있을때, 상기 부호가 유효하다는 표시를 발생하는 단계와, 제1데이타 열로부터의 표시를 발생하는 단계와, 처리단자의 사용자가 정당하게 개인용 확인 카드를 사용하여 확인 처리를 수행하는지를 처리 단말기의 조작자가 확인하도록 처리 단말기의 디스플레이에 표시를 디스플레이 시키는 단계를 구비하는 것을 특징으로 하는 개인용 확인 카드 확인방법.
  2. 제1항에 있어서, 상기 디지탈 사이닝 및 디지탈 확인 단계에서는 사설 키 비밀장치의 사설키를 사용하는 것을 특징으로 하는 개인용 확인 카드 확인방법.
  3. 제1항에 있어서, 상기 디지탈 사이닝 단계에서는 공용 키이 비밀장치쌍의 사설 키이를 사용하고 디지탈 확인단계에서는 공용 키이 비빌장치쌍의 공용 키이를 사용하는 것을 특징으로 하는 개인용 확인 카드 확인방법.
  4. 제1항에 있어서, 상기 인코딩 기능은 다음의 기능 즉, 에러 교정, 비밀 부호화 및 확인 맵핑중 하나 이상으로부터 선택되는 것을 특징으로 하는 개인용 확인 카드 확인방법.
  5. 제4항에 있어서, 상기 기술중 하나가 제1데이타 열에 적용되며 상기 기술중 다른 하나는 상기 부호에 적용되는 것을 특징으로 하는 개인용 확인 카드 확인방법.
  6. 제1항에 있어서, 정당 사용자에 대한 하나 이상의 사실을 표시하는 데이타를 포함하는 제1데이타 열을 증가시키는 단계를 더 구비하는 것을 특징으로 하는 개인용 확인 카드 확인방법.
  7. 제1항에 있어서, 각각 개인용 확인 카드를 사용하여 특정한 확인 처리를 공이하는 하나 이상의 암호명을 포함하도록 제1데이타 열을 증가시키는 단계를 더 구비하는 것을 특징으로 하는 개인용 확인 카드 확인방법.
  8. 정당 사용자의 외부적 특징으로부터 도출된 그리고 비밀로 유지될 필요가 없는 부분을 갖는 제1데이타 열과 상기 제1데이타 열의 부호를 포함하는 개인용 확인 카드 정당 사용자가 처리단자를 사용하여 확인처리를 수행하도록 하는 방법에 있어서, 상기 처리단자에서 개인용 확인 카드를 수용하는 단계와, 상기 처리단자에서 수용된 개인용 확인카드의 부호가 제1데이타 열로부터 발생될 수 있는지를 디지탈로 확인하는 단계와, 상기 부호가 제1데이타 열로부터 발생될 수 있으면, 상기 부호가 유효하다는 표시를 발생하는 단계와, 제1데이타 열로부터의 표시를 발생시키는 단계와, 사용자가 정당하게 개인용 확인카드를 사용하여 확인처리를 수행하는지를 처리단자의 조작자가 확인하도록 처리 단말기의 디스플레이에 표시를 디스플레이 시키는 단계를 구비하는 것을 특징으로 하는 개인용 확인 카드 확인방법.
  9. 제8항에 있어서, 제1데이타 열로부터의 표시를 발생하고 상기 표시를 디스플레이 하는 단계가, 상기 부호가 제1데이타 열로부터 발생될 수 있는지 여부를 디지탈로 확인하는 단계에서 또는 그 전에 수행되는 것을 특징으로 하는 개인용 확인 카드 확인방법.
  10. 제8항에 있어서, 상기 제1데이타 열의 부호 및 상기 부호를 디지탈로 확인하는 단계가 사설 키이 비밀장치의 사설 키이를 사용하는 것을 특징으로하는 개인용 확인 카드 확인방법.
  11. 정당한 사용자의 외부적 특징으로부터 도출된 부분과 일부 다른 정당한 정보를 갖는 데이터 열을 저장시키기 위한 저장영역과 처리기를 갖는 개인용 확인 카드 정당 사용자가 처리 단말기를 사용하여 확인처리를 수행하도록 하는 방법에 있어서, (a) 확인 처리 단말기에서 개인용 확인 카드를 수용하는 단계와, (b) 상기 처리 단말기가, 개인용 확인 카드가 정당한 정보를 포함하는지를 확인하도록 하기 위하여 개인용 확인 카드와 확인 처리 단말기 사이에 하나 이상의 메시지를 변화시키는 단계와, (c) 상기 확인 처리 단말기가, 개인용 확인 카드가 정당한 정보를 포함하고 있음을 확인하면 정당한 정보가 유효하다는 표시를 발생시키는 단계와, (d) 데이타 열로부터의 표시를 발생시키는 단계와, (e) 상기 사용자가 개인용 확인 카드를 사용하여 확인 처리하기에 정당한지를 조작자가 확인하도록 확인 처리 단말기의 디스플레이상에 표시를 디스플레이 시키는 단계를 구비하는 것을 특징으로 하는 개인용 확인 카드 확인방법.
  12. 제11항에 있어서, 상기 정당한 정보는 데이터 열의 부호인 것을 특징으로 하는 개인용 확인 카드 확인방법.
  13. 확인 처리 단말기를 사용하여 개인용 확인 카드의 정당한 사용자가 확인 처리를 수행하도륵 하는 방법에 있어서, 상기 개인용 확인 카드는 처리기 및 저장 영역을 갖으며, 상기 저장 영역은 데이타 열 Q와, J 및 Q모듈로 M이 완전한 제곱 모듈로 M이 되도록 하는 인수 ±1 모드 M과 ±2 모드 M중 하나와 같은 값 j와, 상기 적의 평방근과 같은 데이타 열의 부호 Z를 저장하며, M은 P1에 P2를 곱한 적과 같으며 P1및 P2는 비밀 주번호이며, (a) 확인 처리 단말기에서 개인용 확인카드를 수용하는 단계와, (b) 선정된 수의 적법 체크가 개인용 확인 카드에서 수행되었는지를 결정하는 단계와, (c) 선정된 수의 적법 체크가 수행되지 않았으면, 개인용 확인카드가 부호 Z를 포함하는지를 확인 처리 단말기가 확인하도록 개인용 확인 카드와 확인단말기 사이에서 하나 이상의 메시지를 변화시키는 단계와, (d) 개인용 확인 카드가 부호 Z를 포함한다는 것을 확인 처리 단말기가 확인하면, 단계(b)를 반복하는 단계와, (e) 선정된 수의 적법 체크가 수행되었으면, 부호 Z이 유효임을 표시하는 단계와, (f) 데이타 열로부터 표시를 발생하는 단계와, (g) 사용자가 정당하게 개인용 확인카드를 사용하여 확인 처리를 수행하는지를 처리 단말기의 조작자가 확인하도록 처리단말기의 디스플레이에 표시를 디스플레이 시키는 단계를 구비하는 것을 특징으로 하는 개인용 확인 카드 확인방법.
  14. 제13항에 있어서, 상기 데이타 열 Q는 선정된 기능 F를 사용하여 맵되는 암호이며, 상기 암호는 사용자의 외부적 특징으로부터 도출되며 비밀이 유지될 필요는 없는 부분을 갖는 것을 특징으로 하는 개인용 확인 카드 확인방법.
  15. 제13항에 있어서, 개인용 확인 카드에서 랜덤한 수 x모듈로 M을 발생하는 단계와, 개인용 확인 카드에서, 랜덤한 수 x모듈로 M의 제곱 y를 계산하고 확인 처리 단말기를 제공하는 단계와, 확인 처리 단말기에서, 제1 또는 제2값을 하나의 비트로 지정하고 상기 비트를 개인용 확인 카드로 전송하는 단계와, 개인용 확인 카드에서, 확인 처리 단자로부터 도출된 비트가 제1 또는 제2값을 갖는지를 결정하는 단계와, 제1값을 갖는 비트가 확인 처리 단말기로부터 수신되었으면, 개인용 확인 카드로부터의 W=x모듈로 M을 확인 처리 단말기를 제공하는 단계와, 확인 처리 단말기에서, W의 제곱이 y인지를 결정하는 단계와, W의 제곱이 y이면, 단계(b)를 반복하는 단계와, W의 제곱이 y가 아니면, 개인용 확인 카드를 거절하는 단계와, 제2값을 갖는 비트가 확인 처리 단말기로부터 수신되었으면, 개인용 확인 카드에서 W=xz 모듈로 M을 계산하고 개인용 확인 카드로부터 W를 확인처리 단말기에서 제공하는 단계와, 확인 처리 단말기에서, W의 제곱이 적 yiQ모둘로 M과 같은지 여부를 결정하는 단계와, W의 제곱이 적 yjQ모듈로 M과 같으면, 단계(b)를 반복하는 단계와, W의 제곱이 적 yjQ모듈로 M과 같지않으면, 개인용 확인 카드를 거절하는 단계를 구비하는 것을 특징으로 하는 개인용 확인 카드를 확인방법.
  16. 제11항에 있어서, 정당한 정보가, 개인용 확인 카드와 확인 처리 단말기 사이에서 변화되는 메시지내에 있지 않은 것을 특징으로 하는 개인용 확인 카드 확인 방법.
  17. 제11항에 있어서, 하나 이상의 메시지의 변화가 정당한 사용자의 적법한 증명서를 구성하는 것을 특징으로 하는 개인용 확인 카드 확인방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019920701077A 1989-11-06 1990-11-02 합병증명서를 이용한 신원확인용 방법 및 시스템 Expired - Lifetime KR0177831B1 (ko)

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US07/432,130 US4995081A (en) 1988-03-21 1989-11-06 Method and system for personal identification using proofs of legitimacy
US432,130 1989-11-06
PCT/US1990/006547 WO1991007033A1 (en) 1989-11-06 1990-11-02 Method and system for personal identification using proofs of legitimacy

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US4995081A (en) 1991-02-19
IL96246A0 (en) 1991-08-16
CA2073065A1 (en) 1991-05-07
EP0500749A4 (en) 1993-09-22
DE69031868D1 (de) 1998-02-05
EP0500749A1 (en) 1992-09-02
IL96246A (en) 1994-01-25
WO1991007033A1 (en) 1991-05-16
AU6872591A (en) 1991-05-31
CA2073065C (en) 2000-07-04
DE69031868T2 (de) 1998-04-16
EP0500749B1 (en) 1997-12-29
KR0177831B1 (ko) 1999-05-15
AU651326B2 (en) 1994-07-21

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