DE68907717D1 - Diversifizierungsverfahren fuer oeffentliche schluessel. - Google Patents

Diversifizierungsverfahren fuer oeffentliche schluessel.

Info

Publication number
DE68907717D1
DE68907717D1 DE8989909280T DE68907717T DE68907717D1 DE 68907717 D1 DE68907717 D1 DE 68907717D1 DE 8989909280 T DE8989909280 T DE 8989909280T DE 68907717 T DE68907717 T DE 68907717T DE 68907717 D1 DE68907717 D1 DE 68907717D1
Authority
DE
Germany
Prior art keywords
public keys
diversification
procedure
diversification procedure
keys
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 - Fee Related
Application number
DE8989909280T
Other languages
English (en)
Other versions
DE68907717T2 (de
Inventor
Jeffrey Austin
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.)
NCR International Inc
Original Assignee
NCR International Inc
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
Priority claimed from GB888819767A external-priority patent/GB8819767D0/en
Application filed by NCR International Inc filed Critical NCR International Inc
Publication of DE68907717D1 publication Critical patent/DE68907717D1/de
Application granted granted Critical
Publication of DE68907717T2 publication Critical patent/DE68907717T2/de
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
    • 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
    • H04L9/3006—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy underlying computational problems or public-key parameters
    • H04L9/302—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy underlying computational problems or public-key parameters involving the integer factorization problem, e.g. RSA or quadratic sieve [QS] schemes
    • 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
    • H04L9/3247—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
    • H04L9/3249—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 using RSA or related signature schemes, e.g. Rabin scheme

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
DE89909280T 1988-08-19 1989-07-27 Diversifizierungsverfahren für öffentliche schlüssel. Expired - Fee Related DE68907717T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888819767A GB8819767D0 (en) 1988-08-19 1988-08-19 Public key diversification method
US07/364,949 US4944007A (en) 1988-08-19 1989-06-12 Public key diversification method

Publications (2)

Publication Number Publication Date
DE68907717D1 true DE68907717D1 (de) 1993-08-26
DE68907717T2 DE68907717T2 (de) 1994-02-17

Family

ID=26294304

Family Applications (1)

Application Number Title Priority Date Filing Date
DE89909280T Expired - Fee Related DE68907717T2 (de) 1988-08-19 1989-07-27 Diversifizierungsverfahren für öffentliche schlüssel.

Country Status (5)

Country Link
EP (1) EP0400103B1 (de)
JP (1) JPH03505033A (de)
AU (1) AU607351B2 (de)
DE (1) DE68907717T2 (de)
WO (1) WO1990002456A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5272755A (en) * 1991-06-28 1993-12-21 Matsushita Electric Industrial Co., Ltd. Public key cryptosystem with an elliptic curve
US5351297A (en) * 1991-06-28 1994-09-27 Matsushita Electric Industrial Co., Ltd. Method of privacy communication using elliptic curves
GB9203425D0 (en) * 1992-02-18 1992-09-23 Sewell Roger F Devices for implementing public key cryptography and digital signatures
US5442707A (en) * 1992-09-28 1995-08-15 Matsushita Electric Industrial Co., Ltd. Method for generating and verifying electronic signatures and privacy communication using elliptic curves
WO1994015423A1 (en) * 1992-12-22 1994-07-07 Telstra Corporation Limited A cryptographic method
US5539828A (en) * 1994-05-31 1996-07-23 Intel Corporation Apparatus and method for providing secured communications
US6185546B1 (en) 1995-10-04 2001-02-06 Intel Corporation Apparatus and method for providing secured communications
EP0784256A1 (de) * 1995-12-22 1997-07-16 Intel Corporation Verfahren und Vorrichtung zur Kryptographie mit offentlichem Schlüssel unter Verwendung einer sicheren Halbleiteranordnung
CA2267721C (en) * 1998-03-26 2002-07-30 Nippon Telegraph And Telephone Corporation Scheme for fast realization of encryption, decryption and authentication
IL133432A0 (en) * 1999-12-09 2001-04-30 Cipherit Ltd Systems and methods for certifying public keys in digital signatures and key-agreements with membership authentication

Also Published As

Publication number Publication date
EP0400103B1 (de) 1993-07-21
AU4052489A (en) 1990-03-23
WO1990002456A1 (en) 1990-03-08
AU607351B2 (en) 1991-02-28
EP0400103A1 (de) 1990-12-05
JPH03505033A (ja) 1991-10-31
DE68907717T2 (de) 1994-02-17

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: AT&T GLOBAL INFORMATION SOLUTIONS INTERNATIONAL IN

8327 Change in the person/name/address of the patent owner

Owner name: NCR INTERNATIONAL, INC. (N.D.GES.D.STAATES DELAWAR

8328 Change in the person/name/address of the agent

Free format text: V. BEZOLD & SOZIEN, 80799 MUENCHEN

8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee