IT940227B - Macchina cifratrice per codifica re e decodificare messaggi - Google Patents

Macchina cifratrice per codifica re e decodificare messaggi

Info

Publication number
IT940227B
IT940227B IT57960A IT57960A IT940227B IT 940227 B IT940227 B IT 940227B IT 57960 A IT57960 A IT 57960A IT 57960 A IT57960 A IT 57960A IT 940227 B IT940227 B IT 940227B
Authority
IT
Italy
Prior art keywords
coding
encryption machine
decoding messages
decoding
messages
Prior art date
Application number
IT57960A
Other languages
English (en)
Italian (it)
Original Assignee
Nederlanden Staat
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 Nederlanden Staat filed Critical Nederlanden Staat
Application granted granted Critical
Publication of IT940227B publication Critical patent/IT940227B/it

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
    • G09C1/08—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 the connections being mechanical

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Synchronous Machinery (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
IT57960A 1959-01-12 1960-01-12 Macchina cifratrice per codifica re e decodificare messaggi IT940227B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL235031 1959-01-12

Publications (1)

Publication Number Publication Date
IT940227B true IT940227B (it) 1973-02-10

Family

ID=19751508

Family Applications (1)

Application Number Title Priority Date Filing Date
IT57960A IT940227B (it) 1959-01-12 1960-01-12 Macchina cifratrice per codifica re e decodificare messaggi

Country Status (3)

Country Link
FR (1) FR1605161A (en))
GB (2) GB1322492A (en))
IT (1) IT940227B (en))

Also Published As

Publication number Publication date
GB1322492A (en) 1973-07-04
GB1322491A (en) 1973-07-04
FR1605161A (en)) 1973-04-16

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