JPH04211543A - Digital data secret device - Google Patents

Digital data secret device

Info

Publication number
JPH04211543A
JPH04211543A JP4902491A JP4902491A JPH04211543A JP H04211543 A JPH04211543 A JP H04211543A JP 4902491 A JP4902491 A JP 4902491A JP 4902491 A JP4902491 A JP 4902491A JP H04211543 A JPH04211543 A JP H04211543A
Authority
JP
Japan
Prior art keywords
data
sequence
part
adder
digital data
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
JP4902491A
Inventor
Mitsuo Nishiwaki
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
Priority to JP8202790 priority Critical
Application filed by Nec Corp filed Critical Nec Corp
Priority to JP4902491A priority patent/JPH04211543A/en
Publication of JPH04211543A publication Critical patent/JPH04211543A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To keep digital data secret against any person other than a legal receiver without fail.
CONSTITUTION: In a transmission part 1, the initial value for an M sequence signal generation part 14 is changed at a constant cycle based on a secret code 17a inputted from an external device. M sequence bit sequence data 14a at this time and transmission data 11a are added and transmitted in an adder 15. A receiving part 3 changes the secret code from the external device at a constant applicable cycle and generates initial data 33a of an M sequence signal generation part 34. M sequence bit sequence data 34a at this time and receiving data 37a are added and decoded in an adder 35.
COPYRIGHT: (C)1992,JPO&Japio
JP4902491A 1990-03-29 1991-02-21 Digital data secret device Pending JPH04211543A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8202790 1990-03-29
JP4902491A JPH04211543A (en) 1990-03-29 1991-02-21 Digital data secret device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4902491A JPH04211543A (en) 1990-03-29 1991-02-21 Digital data secret device

Publications (1)

Publication Number Publication Date
JPH04211543A true JPH04211543A (en) 1992-08-03

Family

ID=26389377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4902491A Pending JPH04211543A (en) 1990-03-29 1991-02-21 Digital data secret device

Country Status (1)

Country Link
JP (1) JPH04211543A (en)

Cited By (13)

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WO2003096611A1 (en) * 2002-05-10 2003-11-20 Sony Corporation Data encryption/decryption method, and device
WO2005025127A1 (en) * 2003-09-04 2005-03-17 Fujitsu Limited Transmitter/receiver apparatus and cryptographic communication method
JP2006340407A (en) * 2006-09-25 2006-12-14 Sony Corp Encryption device and method, and decoding device and method
JP2007043738A (en) * 2006-09-25 2007-02-15 Sony Corp Electronic equipment
JP2007068235A (en) * 2002-05-10 2007-03-15 Sony Corp Data encryption and decryption, or method and apparatus for encryption and decryption
US7233665B1 (en) 1997-04-23 2007-06-19 Sony Corporation Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method
US7242769B2 (en) 1997-04-23 2007-07-10 Sony Corporation Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method
JP2010246158A (en) * 2010-07-13 2010-10-28 Sony Corp Encryption apparatus and method, and decryption apparatus and method
JP2012070430A (en) * 2011-12-07 2012-04-05 Sony Corp Decoder and decoding method
JP2013017225A (en) * 2012-09-18 2013-01-24 Sony Corp Encryption device and method
JP2013179701A (en) * 2013-06-12 2013-09-09 Sony Corp Encryption device and method
JP2013192267A (en) * 2013-06-12 2013-09-26 Sony Corp Encryption processing apparatus, encryption processing method, decryption processing apparatus, and decryption processing method
JP2014064318A (en) * 2013-12-05 2014-04-10 Sony Corp Encryption device and method

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7860248B2 (en) 1997-04-23 2010-12-28 Sony Corporation Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method
US8923511B2 (en) 1997-04-23 2014-12-30 Sony Corporation Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method
US8594325B2 (en) 1997-04-23 2013-11-26 Sony Corporation Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method
US8170206B2 (en) 1997-04-23 2012-05-01 Sony Corporation Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method
US7233665B1 (en) 1997-04-23 2007-06-19 Sony Corporation Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method
US7242769B2 (en) 1997-04-23 2007-07-10 Sony Corporation Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method
US9467287B2 (en) 1997-04-23 2016-10-11 Sony Corporation Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method
JP2007068235A (en) * 2002-05-10 2007-03-15 Sony Corp Data encryption and decryption, or method and apparatus for encryption and decryption
JP4539646B2 (en) * 2002-05-10 2010-09-08 ソニー株式会社 Data encryption, decryption or encryption and decoding method and apparatus
US8000476B2 (en) 2002-05-10 2011-08-16 Sony Corporation Data encryption/decryption method, and device
WO2003096611A1 (en) * 2002-05-10 2003-11-20 Sony Corporation Data encryption/decryption method, and device
WO2005025127A1 (en) * 2003-09-04 2005-03-17 Fujitsu Limited Transmitter/receiver apparatus and cryptographic communication method
JP2006340407A (en) * 2006-09-25 2006-12-14 Sony Corp Encryption device and method, and decoding device and method
JP2007043738A (en) * 2006-09-25 2007-02-15 Sony Corp Electronic equipment
JP2010246158A (en) * 2010-07-13 2010-10-28 Sony Corp Encryption apparatus and method, and decryption apparatus and method
JP2012070430A (en) * 2011-12-07 2012-04-05 Sony Corp Decoder and decoding method
JP2013017225A (en) * 2012-09-18 2013-01-24 Sony Corp Encryption device and method
JP2013179701A (en) * 2013-06-12 2013-09-09 Sony Corp Encryption device and method
JP2013192267A (en) * 2013-06-12 2013-09-26 Sony Corp Encryption processing apparatus, encryption processing method, decryption processing apparatus, and decryption processing method
JP2014064318A (en) * 2013-12-05 2014-04-10 Sony Corp Encryption device and method

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