Title:
データセキュリティ
Document Type and Number:
Japanese Patent JP5496880
Kind Code:
B2
Abstract:
A system 100 for increasing data security comprises predetermined system data 104 to be protected. A cryptographic unit 108 is used for cryptographic processing of respective blocks of the content data in dependence on respective keys. A key provider 106 determines the respective key used for the processing of a respective block of the content data in dependence on a respective portion 112 of the predetermined system data 104, the portion not including all the predetermined system data, wherein different respective portions of the predetermined system data are selected for the respective blocks of content data. A server system 200 for increasing data security comprises an output 202 for providing processed content data 110 to a client system 100, the client system comprising predetermined system data 104 to be protected. The server system 200 also comprises a cryptographic unit 208 and a key provider 206.
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Inventors:
Michelles Wilhelmspie AJ
Hollissen Paulus M H M H
Scoric borris
Hollissen Paulus M H M H
Scoric borris
Application Number:
JP2010508946A
Publication Date:
May 21, 2014
Filing Date:
May 19, 2008
Export Citation:
Assignee:
Irdeto Corporate BeV
International Classes:
G06F21/12; G06F21/10; G06F21/52; H04L9/16
Domestic Patent References:
| JP2000122861A | ||||
| JP2006238154A | ||||
| JP9282155A | ||||
| JP1139156A |
Foreign References:
| FR2881254A1 |
Attorney, Agent or Firm:
Yasuhiko Murayama
Masatake Shiga
Takashi Watanabe
Shinya Mitsuhiro
Masatake Shiga
Takashi Watanabe
Shinya Mitsuhiro