Title:
セキュリティモジュールを有するユーザ装置により実行できる処理に対するプライバシの維持
Document Type and Number:
Japanese Patent JP4591894
Kind Code:
B2
Abstract:
A method and system for maintaining privacy for transactions performable by a user device having a security module with a privacy certification authority and a verifier are disclosed. The system includes an issuer providing an issuer public key; a user device having a security module for generating a first set of attestation-signature values; a privacy certification authority computer for providing an authority public key and issuing second attestation values; and a verification computer for checking the validity of the first set of attestation signature values with the issuer public key and the validity of a second set of attestation-signature values with the authority public key, the second set of attestation-signature values being derivable by the user device from the second attestation values, where it is verifiable that the two sets of attestation-signature values relate to the user device.
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Inventors:
Kamenish, Jean
Application Number:
JP2006534842A
Publication Date:
December 01, 2010
Filing Date:
August 20, 2004
Export Citation:
Assignee:
INTERNATIONAL BUSINESS MASCHINES CORPORATION
International Classes:
H04L9/32; G06F1/00; G06F21/33; G06F21/57; G06F21/60; G06Q20/38; G06Q20/40
Domestic Patent References:
| JP2001186122A | ||||
| JP2003258787A | ||||
| JP2004514988A | ||||
| JP2007505582A |
Foreign References:
| US20020049681 |
Other References:
Jan Camenisch,Design and Implementation of the idemix Anonymous Credential System,Proceedings of the 9th ACM conference on Computer and communications security,ACM,2002年11月,p. 21-30
Attorney, Agent or Firm:
Hiroshi Sakaguchi
Yoshihiro City
Takeshi Ueno
Tasaichi Tanae
Yoshihiro City
Takeshi Ueno
Tasaichi Tanae