Title:
セキュアコンテンツを暗号的に保護する方法およびシステム
Document Type and Number:
Japanese Patent JP4522645
Kind Code:
B2
Abstract:
Methods and systems are provided for cryptographically protecting secure content in connection with a graphics subsystem of a computing device. Techniques are implemented to encrypt the contents of video memory so that unauthorized software cannot gain meaningful access to it, thereby maintaining confidentiality. Moreover, a mechanism for tamper detection is provided so that there is awareness when data has been altered in some fashion, thereby maintaining integrity. In various embodiments, the contents of overlay surfaces and/or command buffers are encrypted, and/or the GPU is able to operate on encrypted content while preventing its availability to untrusted parties, devices or software.
Inventors:
Paul england
Marcus Paynard
Nicholas P. Wilt
Marcus Paynard
Nicholas P. Wilt
Application Number:
JP2002352806A
Publication Date:
August 11, 2010
Filing Date:
December 04, 2002
Export Citation:
Assignee:
MICROSOFT CORPORATION
International Classes:
G06F21/24; H04N7/167; G06F1/00; G06F11/30; G06F12/14; G09C1/00; G09G1/16; H04L9/00; H04L12/22; H04N5/913; H04N7/24
Domestic Patent References:
| JP2001333425A | ||||
| JP2001103280A |
Foreign References:
| US5825879 | ||||
| US20020163522 |
Attorney, Agent or Firm:
Atsuhiro Hamanaka
Mitsumasa Ihara
Yoshikazu Tani
Kazuo Abe
Mitsumasa Ihara
Yoshikazu Tani
Kazuo Abe