FR1009977A - Perfectionnement aux appareils cryptographiques - Google Patents

Perfectionnement aux appareils cryptographiques

Info

Publication number
FR1009977A
FR1009977A FR1009977DA FR1009977A FR 1009977 A FR1009977 A FR 1009977A FR 1009977D A FR1009977D A FR 1009977DA FR 1009977 A FR1009977 A FR 1009977A
Authority
FR
France
Prior art keywords
further training
cryptographic devices
cryptographic
devices
training
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
Other languages
English (en)
Inventor
Boris Hagelin
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 filed Critical
Application granted granted Critical
Publication of FR1009977A publication Critical patent/FR1009977A/fr
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
    • G09C1/14—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 involving removable or interchangeable coding numbers, e.g. master tapes, punched cards

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
FR1009977D 1948-07-16 1948-07-16 Perfectionnement aux appareils cryptographiques Expired FR1009977A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1009977T 1948-07-16

Publications (1)

Publication Number Publication Date
FR1009977A true FR1009977A (fr) 1952-06-05

Family

ID=9568640

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1009977D Expired FR1009977A (fr) 1948-07-16 1948-07-16 Perfectionnement aux appareils cryptographiques

Country Status (1)

Country Link
FR (1) FR1009977A (fr)

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