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GB2264423B - Devices for implementing public key cryptography and digital signatures - Google Patents

Devices for implementing public key cryptography and digital signatures

Info

Publication number
GB2264423B
GB2264423B GB9303246A GB9303246A GB2264423B GB 2264423 B GB2264423 B GB 2264423B GB 9303246 A GB9303246 A GB 9303246A GB 9303246 A GB9303246 A GB 9303246A GB 2264423 B GB2264423 B GB 2264423B
Authority
GB
United Kingdom
Prior art keywords
devices
public key
key cryptography
digital signatures
implementing public
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
GB9303246A
Other versions
GB9303246D0 (en
GB2264423A (en
Inventor
Roger Fane Sewell
George Helier Foot
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB9303246D0 publication Critical patent/GB9303246D0/en
Publication of GB2264423A publication Critical patent/GB2264423A/en
Application granted granted Critical
Publication of GB2264423B publication Critical patent/GB2264423B/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
    • 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
    • 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
    • H04L2209/12—Details relating to cryptographic hardware or logic circuitry
    • 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
    • H04L2209/30—Compression, e.g. Merkle-Damgard construction

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)
GB9303246A 1992-02-18 1993-02-18 Devices for implementing public key cryptography and digital signatures Expired - Fee Related GB2264423B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9203425A GB9203425D0 (en) 1992-02-18 1992-02-18 Devices for implementing public key cryptography and digital signatures

Publications (3)

Publication Number Publication Date
GB9303246D0 GB9303246D0 (en) 1993-04-07
GB2264423A GB2264423A (en) 1993-08-25
GB2264423B true GB2264423B (en) 1995-04-26

Family

ID=10710603

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9203425A Pending GB9203425D0 (en) 1992-02-18 1992-02-18 Devices for implementing public key cryptography and digital signatures
GB9303246A Expired - Fee Related GB2264423B (en) 1992-02-18 1993-02-18 Devices for implementing public key cryptography and digital signatures

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9203425A Pending GB9203425D0 (en) 1992-02-18 1992-02-18 Devices for implementing public key cryptography and digital signatures

Country Status (3)

Country Link
AU (1) AU3507393A (en)
GB (2) GB9203425D0 (en)
WO (1) WO1993016538A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9037545B2 (en) 2006-05-05 2015-05-19 Hybir Inc. Group based complete and incremental computer file backup system, process and apparatus

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5588060A (en) * 1994-06-10 1996-12-24 Sun Microsystems, Inc. Method and apparatus for a key-management scheme for internet protocols
EP0693836A1 (en) * 1994-06-10 1996-01-24 Sun Microsystems, Inc. Method and apparatus for a key-management scheme for internet protocols.
DE19703929A1 (en) * 1997-02-04 1998-08-06 Deutsche Telekom Ag Method for generating a digital signature and method for checking the signature
JP3277139B2 (en) * 1997-03-13 2002-04-22 インターナショナル・ビジネス・マシーンズ・コーポレーション Input bit string encryption apparatus and method
EP2377267B1 (en) * 2008-12-04 2018-06-06 Saab AB Key issuer, key carrier, access unit and methods performed in said units

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405829A (en) * 1977-12-14 1983-09-20 Massachusetts Institute Of Technology Cryptographic communications system and method
EP0199620A2 (en) * 1985-03-28 1986-10-29 International Standard Electric Corporation New York Encryption apparatus and methods for raising a large unsigned integer to a large unsigned integer power modulo a large unsigned integer
EP0202768A2 (en) * 1985-04-30 1986-11-26 International Business Machines Corporation Technique for reducing RSA crypto variable storage
EP0353041A2 (en) * 1988-07-26 1990-01-31 THORN EMI plc Signal processing apparatus and method using modified signed digit arithmetic

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4908861A (en) * 1987-08-28 1990-03-13 International Business Machines Corporation Data authentication using modification detection codes based on a public one way encryption function
JPH03505033A (en) * 1988-08-19 1991-10-31 エヌシーアール インターナショナル インコーポレイテッド Public key risk distribution method
US4956863A (en) * 1989-04-17 1990-09-11 Trw Inc. Cryptographic method and apparatus for public key exchange with authentication

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405829A (en) * 1977-12-14 1983-09-20 Massachusetts Institute Of Technology Cryptographic communications system and method
EP0199620A2 (en) * 1985-03-28 1986-10-29 International Standard Electric Corporation New York Encryption apparatus and methods for raising a large unsigned integer to a large unsigned integer power modulo a large unsigned integer
EP0202768A2 (en) * 1985-04-30 1986-11-26 International Business Machines Corporation Technique for reducing RSA crypto variable storage
EP0353041A2 (en) * 1988-07-26 1990-01-31 THORN EMI plc Signal processing apparatus and method using modified signed digit arithmetic

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9037545B2 (en) 2006-05-05 2015-05-19 Hybir Inc. Group based complete and incremental computer file backup system, process and apparatus

Also Published As

Publication number Publication date
WO1993016538A1 (en) 1993-08-19
AU3507393A (en) 1993-09-03
GB9303246D0 (en) 1993-04-07
GB9203425D0 (en) 1992-09-23
GB2264423A (en) 1993-08-25

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970218