IT1048817B - PROCEDURE AND DEVICE FOR THE IMPROVEMENT OF SECRETY IN THE ENCRYPTED TRANSMISSION OF INFORMATION - Google Patents

PROCEDURE AND DEVICE FOR THE IMPROVEMENT OF SECRETY IN THE ENCRYPTED TRANSMISSION OF INFORMATION

Info

Publication number
IT1048817B
IT1048817B IT2896675A IT2896675A IT1048817B IT 1048817 B IT1048817 B IT 1048817B IT 2896675 A IT2896675 A IT 2896675A IT 2896675 A IT2896675 A IT 2896675A IT 1048817 B IT1048817 B IT 1048817B
Authority
IT
Italy
Prior art keywords
secrety
improvement
procedure
information
encrypted transmission
Prior art date
Application number
IT2896675A
Other languages
Italian (it)
Original Assignee
Patelhold Patentverwertung
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 Patelhold Patentverwertung filed Critical Patelhold Patentverwertung
Application granted granted Critical
Publication of IT1048817B publication Critical patent/IT1048817B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Selective Calling Equipment (AREA)
IT2896675A 1974-11-05 1975-11-03 PROCEDURE AND DEVICE FOR THE IMPROVEMENT OF SECRETY IN THE ENCRYPTED TRANSMISSION OF INFORMATION IT1048817B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1476274A CH578807A5 (en) 1974-11-05 1974-11-05

Publications (1)

Publication Number Publication Date
IT1048817B true IT1048817B (en) 1980-12-20

Family

ID=4403628

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2896675A IT1048817B (en) 1974-11-05 1975-11-03 PROCEDURE AND DEVICE FOR THE IMPROVEMENT OF SECRETY IN THE ENCRYPTED TRANSMISSION OF INFORMATION

Country Status (6)

Country Link
CH (1) CH578807A5 (en)
DE (1) DE2457663C2 (en)
FR (1) FR2290800A1 (en)
IT (1) IT1048817B (en)
NL (1) NL7512831A (en)
SE (1) SE412676B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310720A (en) * 1978-03-31 1982-01-12 Pitney Bowes Inc. Computer accessing system
FR2664113B1 (en) * 1990-06-28 1993-06-04 Alcatel Transmission DIRECT SEQUENCE SPREAD CHANGE DIGITAL SPREAD TRANSMISSION METHOD DURING TRANSMISSION, AND TRANSMITTER AND RECEIVER USING THE SAME.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL63459C (en) * 1943-04-05
CH361597A (en) * 1958-08-23 1962-04-30 Patelhold Patentverwertung Method for obfuscating message signals
NL244086A (en) * 1958-12-10
NL6906145A (en) * 1968-05-15 1969-11-18
CH518658A (en) * 1970-07-07 1972-01-31 Patelhold Patentverwaltungs Un Process for encrypted message transmission by interchanging information elements over time
CH539989A (en) * 1971-04-19 1973-07-31 Gretag Ag Method and device for encrypted message transmission

Also Published As

Publication number Publication date
NL7512831A (en) 1976-05-07
FR2290800B3 (en) 1979-06-29
CH578807A5 (en) 1976-08-13
SE7512172L (en) 1976-05-06
DE2457663C2 (en) 1983-11-17
SE412676B (en) 1980-03-10
DE2457663A1 (en) 1976-05-06
FR2290800A1 (en) 1976-06-04

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