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GB2084381B - A method of programming equipment for the secure transmission of messages - Google Patents

A method of programming equipment for the secure transmission of messages

Info

Publication number
GB2084381B
GB2084381B GB8125782A GB8125782A GB2084381B GB 2084381 B GB2084381 B GB 2084381B GB 8125782 A GB8125782 A GB 8125782A GB 8125782 A GB8125782 A GB 8125782A GB 2084381 B GB2084381 B GB 2084381B
Authority
GB
United Kingdom
Prior art keywords
messages
secure transmission
programming equipment
programming
equipment
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
Application number
GB8125782A
Other versions
GB2084381A (en
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB8125782A priority Critical patent/GB2084381B/en
Publication of GB2084381A publication Critical patent/GB2084381A/en
Application granted granted Critical
Publication of GB2084381B publication Critical patent/GB2084381B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C1/00—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
    • G09C1/06—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system wherein elements corresponding to the signs making up the clear text are operatively connected with elements corresponding to the signs making up the ciphered text, the connections, during operation of the apparatus, being automatically and continuously permuted by a coding or key member
    • G09C1/10—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system wherein elements corresponding to the signs making up the clear text are operatively connected with elements corresponding to the signs making up the ciphered text, the connections, during operation of the apparatus, being automatically and continuously permuted by a coding or key member the connections being electrical

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optical Communication System (AREA)
GB8125782A 1980-08-22 1981-08-24 A method of programming equipment for the secure transmission of messages Expired GB2084381B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8125782A GB2084381B (en) 1980-08-22 1981-08-24 A method of programming equipment for the secure transmission of messages

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8027453 1980-08-22
GB8125782A GB2084381B (en) 1980-08-22 1981-08-24 A method of programming equipment for the secure transmission of messages

Publications (2)

Publication Number Publication Date
GB2084381A GB2084381A (en) 1982-04-07
GB2084381B true GB2084381B (en) 1984-03-14

Family

ID=26276669

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8125782A Expired GB2084381B (en) 1980-08-22 1981-08-24 A method of programming equipment for the secure transmission of messages

Country Status (1)

Country Link
GB (1) GB2084381B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3244538A1 (en) * 1982-12-02 1984-06-07 ANT Nachrichtentechnik GmbH, 7150 Backnang Code input unit for encryption and decryption devices in secret data transmission
USRE33229F1 (en) * 1986-03-06 1999-11-16 C L I C Electronics Internatio Remote display device for a microcomputer with optical communication
US4763291A (en) * 1986-03-06 1988-08-09 Project Benjamin, Ltd. Remote display device for a microcomputer

Also Published As

Publication number Publication date
GB2084381A (en) 1982-04-07

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Legal Events

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

Effective date: 19950824