Title:
センタ・システムにおける情報処理方法及びアクセス権限管理方法
Document Type and Number:
Japanese Patent JP4201556
Kind Code:
B2
Abstract:
This invention relates to an access control by using the cryptographic technology. The method according to this invention comprises receiving a first digital signature for specific data from a user terminal; comparing the received first digital signature with a second digital signature, which is registered in a data storage unit so as to correspond to the specific data; if it is judged that the first and second digital signatures are identical, granting the user an authority to update the specific data; if it is judged that the first and second digital signatures are not identical, generating first hash data from the first digital signature; comparing the first hash data with second hash data, which is registered in the data storage unit so as to correspond to the specific data; and if it is judged that the first and second digital signatures are identical, granting the user an authority to read the specific data.
Inventors:
Makita Ikusei
Application Number:
JP2002269115A
Publication Date:
December 24, 2008
Filing Date:
September 13, 2002
Export Citation:
Assignee:
富士通株式会社
International Classes:
G06F12/14; G06F21/00; G06F12/00; G06F15/00; G06F21/60; G06F21/62; G06F21/64; H04L9/00; H04L9/32
Domestic Patent References:
| JP2000163375A | ||||
| JP2000215165A | ||||
| JP2000099477A |
Foreign References:
| WO2001018633A1 |
Attorney, Agent or Firm:
Kazuo Harada