JPS6281145A - Data ciphering system - Google Patents

Data ciphering system

Info

Publication number
JPS6281145A
JPS6281145A JP22006985A JP22006985A JPS6281145A JP S6281145 A JPS6281145 A JP S6281145A JP 22006985 A JP22006985 A JP 22006985A JP 22006985 A JP22006985 A JP 22006985A JP S6281145 A JPS6281145 A JP S6281145A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
data
address
generator
input data
key
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
JP22006985A
Inventor
Fuminobu Furumura
Akira Maeda
Original Assignee
Hitachi Ltd
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 enhance the secrecy of ciphering by deciding the order of replacement from both of a key and an input data.
CONSTITUTION: The key K is inputted externally and stored in a key register 1. A pseudo random number series generator 2 generates a pseudo random number series one after another according to the content of the key register 1. An address generator 3 inputs a pseudo random number generated by the pseudo randiom number generator 2 and an output data just before and generates an address of a data to be outputted next. The data in an input data buffer 4 designated by the address generated by the address generator 3 is outputted. The outputted data is inputted to a delay device 5 and becomes an input of the address generator of the next cycle. The operation above is repeated by 256 times being number of blocks in the input data buffer 4 to complete the ciphering processing to one input data.
COPYRIGHT: (C)1987,JPO&Japio
JP22006985A 1985-10-04 1985-10-04 Data ciphering system Pending JPS6281145A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22006985A JPS6281145A (en) 1985-10-04 1985-10-04 Data ciphering system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22006985A JPS6281145A (en) 1985-10-04 1985-10-04 Data ciphering system

Publications (1)

Publication Number Publication Date
JPS6281145A true true JPS6281145A (en) 1987-04-14

Family

ID=16745455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22006985A Pending JPS6281145A (en) 1985-10-04 1985-10-04 Data ciphering system

Country Status (1)

Country Link
JP (1) JPS6281145A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5261003A (en) * 1991-06-13 1993-11-09 Mitsubishi Denki Kabushiki Kaisha Data communication system and method with data scrambling
WO2008114829A1 (en) * 2007-03-19 2008-09-25 Tokyo Denki University Encryption device, decryption device, encryption program, decryption program, and recording medium
JP2008236777A (en) * 1998-10-07 2008-10-02 Sony Corp Decoding device and decoding method, recording medium, and data processor
JP2009531728A (en) * 2006-03-31 2009-09-03 シューマッハ,アラン Encryption method for highest security applications

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5261003A (en) * 1991-06-13 1993-11-09 Mitsubishi Denki Kabushiki Kaisha Data communication system and method with data scrambling
US5488661A (en) * 1991-06-13 1996-01-30 Mitsubishi Denki Kabushiki Kaisha Data communication system and method with data scrambling
JP2008236777A (en) * 1998-10-07 2008-10-02 Sony Corp Decoding device and decoding method, recording medium, and data processor
JP4556147B2 (en) * 1998-10-07 2010-10-06 ソニー株式会社 Decoding apparatus and decoding method, recording medium, and a data processing device
JP2009531728A (en) * 2006-03-31 2009-09-03 シューマッハ,アラン Encryption method for highest security applications
WO2008114829A1 (en) * 2007-03-19 2008-09-25 Tokyo Denki University Encryption device, decryption device, encryption program, decryption program, and recording medium
JP4737334B2 (en) * 2007-03-19 2011-07-27 学校法人東京電機大学 Encryption device, a decryption device, an encryption program, a decryption program, and recording medium

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