CH341861A - Schlüsselfernschreibmaschine - Google Patents

Schlüsselfernschreibmaschine

Info

Publication number
CH341861A
CH341861A CH341861DA CH341861A CH 341861 A CH341861 A CH 341861A CH 341861D A CH341861D A CH 341861DA CH 341861 A CH341861 A CH 341861A
Authority
CH
Switzerland
Prior art keywords
teletypewriter
key
key teletypewriter
Prior art date
Application number
Other languages
English (en)
Inventor
Fritz Dipl Ing Butzke
Fritz Dipl Ing Hennig
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of CH341861A publication Critical patent/CH341861A/de

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
    • G09C3/00—Typewriters for ciphering or deciphering cryptographic text
    • G09C3/04—Typewriters for ciphering or deciphering cryptographic text wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member
    • G09C3/10—Typewriters for ciphering or deciphering cryptographic text wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member involving removable or interchangeable coding members, e.g. master tapes, punched cards
    • 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
    • H04L2209/26—Testing cryptographic entity, e.g. testing integrity of encryption key or encryption algorithm

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
CH341861D 1954-12-01 1955-11-19 Schlüsselfernschreibmaschine CH341861A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE341861X 1954-12-01

Publications (1)

Publication Number Publication Date
CH341861A true CH341861A (de) 1959-10-31

Family

ID=6236280

Family Applications (1)

Application Number Title Priority Date Filing Date
CH341861D CH341861A (de) 1954-12-01 1955-11-19 Schlüsselfernschreibmaschine

Country Status (2)

Country Link
CH (1) CH341861A (de)
FR (1) FR1155857A (de)

Also Published As

Publication number Publication date
FR1155857A (fr) 1958-05-09

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