DK234263A - Apparat til chifrering eller dechifrering med mindst et kodeelement - Google Patents

Apparat til chifrering eller dechifrering med mindst et kodeelement

Info

Publication number
DK234263A
DK234263A DK234263A DK234263A DK234263A DK 234263 A DK234263 A DK 234263A DK 234263 A DK234263 A DK 234263A DK 234263 A DK234263 A DK 234263A DK 234263 A DK234263 A DK 234263A
Authority
DK
Denmark
Prior art keywords
decryption
encryption
code element
code
Prior art date
Application number
DK234263A
Other languages
English (en)
Inventor
R M M Oberman
A Snijders
Original Assignee
Philips Usfa Nv
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 Philips Usfa Nv filed Critical Philips Usfa Nv
Publication of DK234263A publication Critical patent/DK234263A/da

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
    • G09C1/10—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 electrical
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Storage Device Security (AREA)
DK234263A 1962-05-18 1963-05-17 Apparat til chifrering eller dechifrering med mindst et kodeelement DK234263A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL278586 1962-05-18

Publications (1)

Publication Number Publication Date
DK234263A true DK234263A (da) 1982-04-28

Family

ID=19753832

Family Applications (1)

Application Number Title Priority Date Filing Date
DK234263A DK234263A (da) 1962-05-18 1963-05-17 Apparat til chifrering eller dechifrering med mindst et kodeelement

Country Status (4)

Country Link
DK (1) DK234263A (da)
FR (1) FR1589355A (da)
GB (1) GB1120032A (da)
NO (1) NO128687B (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1235571A (en) * 1969-03-05 1971-06-16 Transvertex Ab Improved ciphering machine
US4264781A (en) * 1979-04-16 1981-04-28 Ncr Corporation Apparatus for encoding and decoding data signals

Also Published As

Publication number Publication date
NO128687B (da) 1973-12-27
FR1589355A (da) 1970-03-31
GB1120032A (en) 1968-07-17

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