JPH03131139A - Key management system for cryptographic key - Google Patents

Key management system for cryptographic key

Info

Publication number
JPH03131139A
JPH03131139A JP26863289A JP26863289A JPH03131139A JP H03131139 A JPH03131139 A JP H03131139A JP 26863289 A JP26863289 A JP 26863289A JP 26863289 A JP26863289 A JP 26863289A JP H03131139 A JPH03131139 A JP H03131139A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
key
user
open
secret
stored
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
JP26863289A
Inventor
Yasuhiro Ishii
Kazuo Takaragi
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 realize the cryptographic processing in the unit of users by providing a user key for each user in addition to a master key and a data key and applying the cryptographic processing based on the user key.
CONSTITUTION: A master key secret key 10 is stored safely in a cryptographic device 2. A master key open key 11 is stored in a host computer 1. As user keys for users A, B, C,...Z, a user A secret key 20 and a user A open key 30, a user B secret key 21 and a user B open key 31, a user C secret key 22 and a user C open key 32,... a user Z secret key 23 and a user Z open key 33 are generated, the user secret keys 20, 21, 22, 23 are ciphered by the master key open key 11 and stored in the host computer 1 and the user open keys 30, 31, 32, 33 are as they are stored in the host computer 1 and a terminal equipment 3. Moreover, the user secret key 24 of the user of a terminal equipment 3 is stored in an IC card 5.
COPYRIGHT: (C)1991,JPO&Japio
JP26863289A 1989-10-16 1989-10-16 Key management system for cryptographic key Pending JPH03131139A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26863289A JPH03131139A (en) 1989-10-16 1989-10-16 Key management system for cryptographic key

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26863289A JPH03131139A (en) 1989-10-16 1989-10-16 Key management system for cryptographic key

Publications (1)

Publication Number Publication Date
JPH03131139A true true JPH03131139A (en) 1991-06-04

Family

ID=17461246

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26863289A Pending JPH03131139A (en) 1989-10-16 1989-10-16 Key management system for cryptographic key

Country Status (1)

Country Link
JP (1) JPH03131139A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002539724A (en) * 1999-03-15 2002-11-19 トムソン ライセンシング ソシエテ アノニム Global Copy protection system for digital home network
JP2005539441A (en) * 2002-09-17 2005-12-22 エリコス ピッツォス Method and system for providing secure data distributed through a public network
DE19827659B4 (en) * 1997-06-30 2010-01-28 Microsoft Corp., Redmond System and method for storing data and for protecting the data against an access nichtauthorisierten
JP2015138978A (en) * 2014-01-20 2015-07-30 日本電信電話株式会社 Authentication system, and program

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19827659B4 (en) * 1997-06-30 2010-01-28 Microsoft Corp., Redmond System and method for storing data and for protecting the data against an access nichtauthorisierten
JP2002539724A (en) * 1999-03-15 2002-11-19 トムソン ライセンシング ソシエテ アノニム Global Copy protection system for digital home network
JP4850341B2 (en) * 1999-03-15 2012-01-11 トムソン ライセンシングThomson Licensing Global Copy protection system for digital home network
US8332657B1 (en) 1999-03-15 2012-12-11 Thomson Licensing Global copy protection system for digital home networks
JP2005539441A (en) * 2002-09-17 2005-12-22 エリコス ピッツォス Method and system for providing secure data distributed through a public network
JP2015138978A (en) * 2014-01-20 2015-07-30 日本電信電話株式会社 Authentication system, and program

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