Invention Grant
US07673152B2 Microprocessor with program and data protection function under multi-task environment
失效
具有多任务环境下的程序和数据保护功能的微处理器
- Patent Title: Microprocessor with program and data protection function under multi-task environment
- Patent Title (中): 具有多任务环境下的程序和数据保护功能的微处理器
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Application No.: US11335601Application Date: 2006-01-20
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Publication No.: US07673152B2Publication Date: 2010-03-02
- Inventor: Kenji Shirakawa , Mikio Hashimoto , Keiichi Teramoto , Satoshi Ozaki , Kensaku Fujimoto
- Applicant: Kenji Shirakawa , Mikio Hashimoto , Keiichi Teramoto , Satoshi Ozaki , Kensaku Fujimoto
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2000-333635 20001031
- Main IPC: G06F17/30
- IPC: G06F17/30
Abstract:
In a microprocessor, a program key for decrypting a program and a data key for encrypting/decrypting data processed by the program are handled as cryptographically inseparable pair inside the microprocessor, so that it becomes possible for the microprocessor to protect processes that actually execute the program, without an intervention of the operating system, and it becomes possible to conceal secret information of the program not only from the other user program but also from the operating system.
Public/Granted literature
- US20060126849A1 Microprocessor with program and data protection function under multi-task environment Public/Granted day:2006-06-15
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