GB1487089A - Secret signalling systems - Google Patents

Secret signalling systems

Info

Publication number
GB1487089A
GB1487089A GB5356074A GB5356074A GB1487089A GB 1487089 A GB1487089 A GB 1487089A GB 5356074 A GB5356074 A GB 5356074A GB 5356074 A GB5356074 A GB 5356074A GB 1487089 A GB1487089 A GB 1487089A
Authority
GB
United Kingdom
Prior art keywords
key
bits
store
groups
binary
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
GB5356074A
Other languages
English (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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1487089A publication Critical patent/GB1487089A/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
    • H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
    • H04L9/0662—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
GB5356074A 1973-12-21 1974-12-11 Secret signalling systems Expired GB1487089A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7347137A FR2255828A5 (enExample) 1973-12-21 1973-12-21

Publications (1)

Publication Number Publication Date
GB1487089A true GB1487089A (en) 1977-09-28

Family

ID=9130002

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5356074A Expired GB1487089A (en) 1973-12-21 1974-12-11 Secret signalling systems

Country Status (4)

Country Link
JP (1) JPS5638954B2 (enExample)
DE (1) DE2450669A1 (enExample)
FR (1) FR2255828A5 (enExample)
GB (1) GB1487089A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310720A (en) 1978-03-31 1982-01-12 Pitney Bowes Inc. Computer accessing system
GB2189970A (en) * 1986-05-01 1987-11-04 British Broadcasting Corp Data conversion

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5824984B2 (ja) * 1976-06-02 1983-05-24 三菱電機株式会社 秘話装置
DE19740333C2 (de) * 1997-09-13 1999-09-30 Deutsche Telekom Ag Verfahren zur Übertragung von verschlüsselten Nachrichten
CN107427095B (zh) * 2015-03-26 2019-05-31 日本希格玛株式会社 支持件用布料

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310720A (en) 1978-03-31 1982-01-12 Pitney Bowes Inc. Computer accessing system
GB2189970A (en) * 1986-05-01 1987-11-04 British Broadcasting Corp Data conversion
GB2189970B (en) * 1986-05-01 1990-03-28 British Broadcasting Corp Data conversion

Also Published As

Publication number Publication date
DE2450669A1 (de) 1975-07-03
JPS5096193A (enExample) 1975-07-31
FR2255828A5 (enExample) 1975-07-18
JPS5638954B2 (enExample) 1981-09-09

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Legal Events

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