GB2306722B - Encryption/decryption circuit, method and system - Google Patents

Encryption/decryption circuit, method and system

Info

Publication number
GB2306722B
GB2306722B GB9521733A GB9521733A GB2306722B GB 2306722 B GB2306722 B GB 2306722B GB 9521733 A GB9521733 A GB 9521733A GB 9521733 A GB9521733 A GB 9521733A GB 2306722 B GB2306722 B GB 2306722B
Authority
GB
United Kingdom
Prior art keywords
encryption
decryption circuit
decryption
circuit
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
GB9521733A
Other versions
GB9521733D0 (en
GB2306722A (en
Inventor
Michel Burri
Pascal Renard
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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
Application filed by Motorola Inc filed Critical Motorola Inc
Priority to GB9521733A priority Critical patent/GB2306722B/en
Publication of GB9521733D0 publication Critical patent/GB9521733D0/en
Publication of GB2306722A publication Critical patent/GB2306722A/en
Application granted granted Critical
Publication of GB2306722B publication Critical patent/GB2306722B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • 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
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
    • H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
    • 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
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • G07C2009/0023—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks with encription of the transmittted data signal
    • 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
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • 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
    • H04L2209/125—Parallelization or pipelining, e.g. for accelerating processing of cryptographic operations

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Error Detection And Correction (AREA)
  • Storage Device Security (AREA)
GB9521733A 1995-10-24 1995-10-24 Encryption/decryption circuit, method and system Expired - Fee Related GB2306722B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9521733A GB2306722B (en) 1995-10-24 1995-10-24 Encryption/decryption circuit, method and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9521733A GB2306722B (en) 1995-10-24 1995-10-24 Encryption/decryption circuit, method and system

Publications (3)

Publication Number Publication Date
GB9521733D0 GB9521733D0 (en) 1996-01-03
GB2306722A GB2306722A (en) 1997-05-07
GB2306722B true GB2306722B (en) 2000-02-09

Family

ID=10782802

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9521733A Expired - Fee Related GB2306722B (en) 1995-10-24 1995-10-24 Encryption/decryption circuit, method and system

Country Status (1)

Country Link
GB (1) GB2306722B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2783270B1 (en) * 1998-09-10 2000-11-17 Mr Electronic Sa ELECTRONIC LOCK WITH DYNAMIC CONTROL AND CONTROL SYSTEM PROVIDED WITH SUCH A LOCK
DE102007007699A1 (en) 2007-02-09 2008-08-14 IHP GmbH - Innovations for High Performance Microelectronics/Institut für innovative Mikroelektronik Reduction of page channel information by interacting crypto blocks

Also Published As

Publication number Publication date
GB9521733D0 (en) 1996-01-03
GB2306722A (en) 1997-05-07

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Legal Events

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

Effective date: 20011024