GB1429469A - Method for subsequently setting data receivers in a contrinuous transmission of encoded data transmitted in binary code form - Google Patents

Method for subsequently setting data receivers in a contrinuous transmission of encoded data transmitted in binary code form

Info

Publication number
GB1429469A
GB1429469A GB2750762A GB2750762A GB1429469A GB 1429469 A GB1429469 A GB 1429469A GB 2750762 A GB2750762 A GB 2750762A GB 2750762 A GB2750762 A GB 2750762A GB 1429469 A GB1429469 A GB 1429469A
Authority
GB
United Kingdom
Prior art keywords
transmission
receivers
transmitter
cipher
data
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
GB2750762A
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 GB1429469A publication Critical patent/GB1429469A/en
Expired 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
    • H04L9/06—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
    • 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
    • H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Facsimile Transmission Control (AREA)

Abstract

1429469 Data transmission; ciphering R HELL 17 July 1962 [19 July 1961] 27507/62 Heading H4P A method for subsequently enabling data receivers in a continuous transmission of enciphered data transmitted in binary coded form, wherein, after periodic time intervals which are short in relation to the entire transmission time, a pre-arranged signal is sent out by the transmitter, the purpose of the signal is not to record a data element in the receivers but to cause a new and hitherto unused section of the cipher running-down period duration to be set both in the transmitter and in the receivers. The setting of a new cipher section in the transmitter and all the receivers may be continuously prepared by local switch clock mechanisms in periodic time intervals, and within these preparation periods the transmitter completes the setting of the new cipher section by transmitting the pre-arranged signal to all the receivers and restarts the cipher pulse production from their new starting position, the transmission of the ciphered data subsequently being continued. Apparatuses employing local time cycle mechanisms and functioning, respectively, as a facsimile and a teleprinter receiver are described with reference to Figs. 1, 2 (not shown). According to an alternative method described with reference to a teleprinter receiver (Fig. 3, not shown) the transmitter briefly interrupts the transmission of ciphered data and by transmitting a pre-arranged signal it commutates itself and the receivers participating in the transmission to the clear operational state, and the, by transmitting a specific group of letters in clear text, it effects for itself and for all the receivers including the newly participating one, the commutation to the encoded operational state, the setting of a new cipher section and the restarting of all cipher pulse generators, the transmission of encoded data subsequently being continued.
GB2750762A 1961-07-19 1962-07-17 Method for subsequently setting data receivers in a contrinuous transmission of encoded data transmitted in binary code form Expired GB1429469A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEX0043174 1961-07-19

Publications (1)

Publication Number Publication Date
GB1429469A true GB1429469A (en) 1976-03-24

Family

ID=7617221

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2750762A Expired GB1429469A (en) 1961-07-19 1962-07-17 Method for subsequently setting data receivers in a contrinuous transmission of encoded data transmitted in binary code form

Country Status (1)

Country Link
GB (1) GB1429469A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0015534A1 (en) * 1979-03-08 1980-09-17 Siemens Aktiengesellschaft System for ciphered transmission of data
GB2140656A (en) * 1983-05-13 1984-11-28 Philips Electronic Associated Television transmission system
GB2141905A (en) * 1983-06-20 1985-01-03 Philips Electronic Associated Secure transmission system
GB2236458A (en) * 1989-09-12 1991-04-03 Ericsson Telefon Ab L M Mobile radio system synchronisation
US5293423A (en) * 1989-09-12 1994-03-08 Telefonaktiebolaget L M Ericsson Synchronizing method in a mobile radio system
CN113939859A (en) * 2019-01-21 2022-01-14 恩格雷夫Io公司 Long term offline management of cryptographic parameters

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0015534A1 (en) * 1979-03-08 1980-09-17 Siemens Aktiengesellschaft System for ciphered transmission of data
GB2140656A (en) * 1983-05-13 1984-11-28 Philips Electronic Associated Television transmission system
GB2141905A (en) * 1983-06-20 1985-01-03 Philips Electronic Associated Secure transmission system
GB2236458A (en) * 1989-09-12 1991-04-03 Ericsson Telefon Ab L M Mobile radio system synchronisation
US5293423A (en) * 1989-09-12 1994-03-08 Telefonaktiebolaget L M Ericsson Synchronizing method in a mobile radio system
CN113939859A (en) * 2019-01-21 2022-01-14 恩格雷夫Io公司 Long term offline management of cryptographic parameters
CN113939859B (en) * 2019-01-21 2024-04-09 恩格雷夫Io公司 Long-term offline management of cryptographic parameters

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed