JPH04119386A - Enciphered code conversion system - Google Patents

Enciphered code conversion system

Info

Publication number
JPH04119386A
JPH04119386A JP23949390A JP23949390A JPH04119386A JP H04119386 A JPH04119386 A JP H04119386A JP 23949390 A JP23949390 A JP 23949390A JP 23949390 A JP23949390 A JP 23949390A JP H04119386 A JPH04119386 A JP H04119386A
Authority
JP
Japan
Prior art keywords
means
code
code conversion
cipher
equation
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
JP23949390A
Inventor
Kazuya Yoshida
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
Application filed by Nec Corp filed Critical Nec Corp
Priority to JP23949390A priority Critical patent/JPH04119386A/en
Publication of JPH04119386A publication Critical patent/JPH04119386A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE:To prevent a cipher from being deciphered by outputting the cipher obtained by further code-converting a code which is previously converted by a 1st code conversion means. CONSTITUTION:An equation is decided by using data inputted by an input means 11, and number-assignment is performed to the data inputted by an equation decision means 12 and the input means 11 in order of appearance. Then, the code conversion 14 is performed based on a value obtained by performing number-assignment by a number assigning means 13 and the data inputted by the input means. Furthermore, the code conversion 15 is performed by the equation decided by the means 12 and the converted cipher is outputted from an output means 16. By performing the code conversion in two stages, the identical code is converted to a different code, therefore it is made more difficult to decipher the cipher.
JP23949390A 1990-09-10 1990-09-10 Enciphered code conversion system Pending JPH04119386A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23949390A JPH04119386A (en) 1990-09-10 1990-09-10 Enciphered code conversion system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23949390A JPH04119386A (en) 1990-09-10 1990-09-10 Enciphered code conversion system

Publications (1)

Publication Number Publication Date
JPH04119386A true JPH04119386A (en) 1992-04-20

Family

ID=17045599

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23949390A Pending JPH04119386A (en) 1990-09-10 1990-09-10 Enciphered code conversion system

Country Status (1)

Country Link
JP (1) JPH04119386A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997010659A1 (en) * 1995-09-13 1997-03-20 Hitachi, Ltd. Method and device for compressing and ciphering data
US6411714B1 (en) 1995-09-13 2002-06-25 Hitachi, Ltd. Data decompression/decryption method and system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997010659A1 (en) * 1995-09-13 1997-03-20 Hitachi, Ltd. Method and device for compressing and ciphering data
US6122378A (en) * 1995-09-13 2000-09-19 Hitachi, Ltd. Data compression/encryption method and system
US6411714B1 (en) 1995-09-13 2002-06-25 Hitachi, Ltd. Data decompression/decryption method and system

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