JPS6423276A - Enciphering system for digital data - Google Patents

Enciphering system for digital data

Info

Publication number
JPS6423276A
JPS6423276A JP62180738A JP18073887A JPS6423276A JP S6423276 A JPS6423276 A JP S6423276A JP 62180738 A JP62180738 A JP 62180738A JP 18073887 A JP18073887 A JP 18073887A JP S6423276 A JPS6423276 A JP S6423276A
Authority
JP
Japan
Prior art keywords
key
image
ciphering
stream
ciphered
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.)
Granted
Application number
JP62180738A
Other languages
Japanese (ja)
Other versions
JP2965294B2 (en
Inventor
Tsudoi Tezuka
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.)
A T R TSUSHIN SYST KENKYUSHO KK
ATR TSUSHIN SYST KENKYUSHO
Original Assignee
A T R TSUSHIN SYST KENKYUSHO KK
ATR TSUSHIN SYST KENKYUSHO
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 A T R TSUSHIN SYST KENKYUSHO KK, ATR TSUSHIN SYST KENKYUSHO filed Critical A T R TSUSHIN SYST KENKYUSHO KK
Priority to JP62180738A priority Critical patent/JP2965294B2/en
Publication of JPS6423276A publication Critical patent/JPS6423276A/en
Application granted granted Critical
Publication of JP2965294B2 publication Critical patent/JP2965294B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • Y02B60/1225—

Landscapes

  • Storage Device Security (AREA)

Abstract

PURPOSE: To provide an optimum ciphering system for ciphering a moving picture having a high transmission rate by generating a key stream for ciphering by using power calculation of a matrix, and adding the key stream to a stream of source data and ciphering the data. CONSTITUTION: A sender A when sending a moving picture Mi=M1 , M2 ... to a receiver B generates a key image K by a preprocessing part 1 as shown by the equation I to generate a ciphered image Ci (i=1, 2...) from Ci =Mi +Ki . Then a ciphering process circuit 2 adds C0 =GAF<1> 1/GA as the key image K to the moving image stream and use the power calculation of the matrix by using (p) as a power value of '2' to send a sequence of ciphered images C0 , C1 ... Here, 0<1<=p<n> . On the receiver side, on the other hand, TB=GBF<m> 1/GB is used as an open key and GBm is used as a secret key. Here, GB is a normal matrix of (n) rows by (n) columns and 0<=m<=p<n> holds. Then the preprocessing part 3 calculates the key image K and a deciphering part 4 regenerate a source image based on the sent ciphered image and the key image K calculated by the preprocessing part 3.
JP62180738A 1987-07-20 1987-07-20 Digital data encryption device Expired - Lifetime JP2965294B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62180738A JP2965294B2 (en) 1987-07-20 1987-07-20 Digital data encryption device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62180738A JP2965294B2 (en) 1987-07-20 1987-07-20 Digital data encryption device

Publications (2)

Publication Number Publication Date
JPS6423276A true JPS6423276A (en) 1989-01-25
JP2965294B2 JP2965294B2 (en) 1999-10-18

Family

ID=16088448

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62180738A Expired - Lifetime JP2965294B2 (en) 1987-07-20 1987-07-20 Digital data encryption device

Country Status (1)

Country Link
JP (1) JP2965294B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114325072A (en) * 2022-03-14 2022-04-12 南昌航空大学 Ferromagnetic resonance overvoltage identification method and device based on gram angular field coding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114325072A (en) * 2022-03-14 2022-04-12 南昌航空大学 Ferromagnetic resonance overvoltage identification method and device based on gram angular field coding
CN114325072B (en) * 2022-03-14 2022-06-21 南昌航空大学 Ferromagnetic resonance overvoltage identification method and device based on gram angular field coding

Also Published As

Publication number Publication date
JP2965294B2 (en) 1999-10-18

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