FR780763A - Cryptographic device - Google Patents

Cryptographic device

Info

Publication number
FR780763A
FR780763A FR780763DA FR780763A FR 780763 A FR780763 A FR 780763A FR 780763D A FR780763D A FR 780763DA FR 780763 A FR780763 A FR 780763A
Authority
FR
France
Prior art keywords
cryptographic device
cryptographic
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
French (fr)
Inventor
Boris Caesar Wilhelm Hagelin
Louis Battistelli
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 FR780763A publication Critical patent/FR780763A/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
    • G09C1/04—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 with sign carriers or indicators moved relative to one another to positions determined by a permutation code, or key, so as to indicate the appropriate corresponding clear or ciphered text

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
FR780763D 1934-01-24 1934-01-24 Cryptographic device Expired FR780763A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR780763T 1934-01-24

Publications (1)

Publication Number Publication Date
FR780763A true FR780763A (en) 1935-05-03

Family

ID=9205880

Family Applications (1)

Application Number Title Priority Date Filing Date
FR780763D Expired FR780763A (en) 1934-01-24 1934-01-24 Cryptographic device

Country Status (1)

Country Link
FR (1) FR780763A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1045692B (en) * 1952-08-16 1958-12-04 Telefonbau Encryption device
US3364595A (en) * 1966-05-05 1968-01-23 August F. Michelson Cryptographic instrument

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1045692B (en) * 1952-08-16 1958-12-04 Telefonbau Encryption device
US3364595A (en) * 1966-05-05 1968-01-23 August F. Michelson Cryptographic instrument

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