FR503071A - Automatic cryptography method and apparatus - Google Patents

Automatic cryptography method and apparatus

Info

Publication number
FR503071A
FR503071A FR503071A FR503071DA FR503071A FR 503071 A FR503071 A FR 503071A FR 503071 A FR503071 A FR 503071A FR 503071D A FR503071D A FR 503071DA FR 503071 A FR503071 A FR 503071A
Authority
FR
France
Prior art keywords
automatic
cryptography method
cryptography
automatic cryptography
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
FR503071A
Other languages
French (fr)
Inventor
James Powers
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
Application granted granted Critical
Publication of FR503071A publication Critical patent/FR503071A/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
    • 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
    • G09C3/06—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 the connections being mechanical

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Rotary Presses (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Storage Device Security (AREA)
FR503071A 1919-08-05 1919-08-26 Automatic cryptography method and apparatus Expired FR503071A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1930719A GB154962A (en) 1919-08-05 1919-08-05 Improvement in code machines

Publications (1)

Publication Number Publication Date
FR503071A true FR503071A (en) 1920-06-02

Family

ID=10127201

Family Applications (1)

Application Number Title Priority Date Filing Date
FR503071A Expired FR503071A (en) 1919-08-05 1919-08-26 Automatic cryptography method and apparatus

Country Status (3)

Country Link
DE (1) DE383003C (en)
FR (1) FR503071A (en)
GB (1) GB154962A (en)

Also Published As

Publication number Publication date
DE383003C (en) 1923-10-09
GB154962A (en) 1920-12-06

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