JPH0292127A - Enciphering system - Google Patents

Enciphering system

Info

Publication number
JPH0292127A
JPH0292127A JP24259688A JP24259688A JPH0292127A JP H0292127 A JPH0292127 A JP H0292127A JP 24259688 A JP24259688 A JP 24259688A JP 24259688 A JP24259688 A JP 24259688A JP H0292127 A JPH0292127 A JP H0292127A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
encipherment
table
data
transmission
system
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.)
Pending
Application number
JP24259688A
Inventor
Kengo Nakamura
Original Assignee
Nec Corp
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

Links

Abstract

PURPOSE: To prevent the leakage of data by using data before transmission with a first system, using data after decoding with a second system, preparing a new encipherment table with a password generating part having the same algorithm, rewriting the encipherment table of both system and using it as the encipherment table of the next data transmission.
CONSTITUTION: A transmission side system A enciphers the transmission data with an encipherment table 1, forms encipherment data for transmission, transmits them, forms the data to update the encipherment table 1 with a special algorithm (computation expression) based on the transmission data and the data of the encipherment table 1 and thus, the encipherment table is updated. A reception side system B has an encipherment table 2 of the same sequence as that of a transmission side, decodes the received encipherment sentence based on the encipherment number table, forms the new encipherment table by the same algorithm as that of a transmission side based on the decoded data and the encipherment table 2 and updates the encipherment table. Thus, the leakage of the transmission data can be prevented.
COPYRIGHT: (C)1990,JPO&Japio
JP24259688A 1988-09-29 1988-09-29 Enciphering system Pending JPH0292127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24259688A JPH0292127A (en) 1988-09-29 1988-09-29 Enciphering system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24259688A JPH0292127A (en) 1988-09-29 1988-09-29 Enciphering system

Publications (1)

Publication Number Publication Date
JPH0292127A true true JPH0292127A (en) 1990-03-30

Family

ID=17091398

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24259688A Pending JPH0292127A (en) 1988-09-29 1988-09-29 Enciphering system

Country Status (1)

Country Link
JP (1) JPH0292127A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07115413A (en) * 1993-10-18 1995-05-02 Nec Corp Mobile communication terminal authentication system
JPH07250060A (en) * 1994-03-01 1995-09-26 Internatl Business Mach Corp <Ibm> For protecting security in communication
JP2003509970A (en) * 1999-09-16 2003-03-11 ブリティッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー Packet authentication
JP2003249929A (en) * 2001-12-20 2003-09-05 Nti:Kk Communication equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07115413A (en) * 1993-10-18 1995-05-02 Nec Corp Mobile communication terminal authentication system
JPH07250060A (en) * 1994-03-01 1995-09-26 Internatl Business Mach Corp <Ibm> For protecting security in communication
JP2003509970A (en) * 1999-09-16 2003-03-11 ブリティッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー Packet authentication
JP2003249929A (en) * 2001-12-20 2003-09-05 Nti:Kk Communication equipment

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