Microprocessor, a node terminal, a computer system and a program execution proving method
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United States of America Patent
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Aug 18, 2009
Grant Date -
Jul 20, 2006
app pub date -
Jul 13, 2005
filing date -
Jan 20, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A node terminal including an internal memory for saving a program transmitted from a server, a CPU for executing the program, a hash value calculating section for performing an operation of the program using a specified hash function when the execution of the program is completed, and a digital signature executing section for digitally signing the program operated using the hash function and the execution result of the program, using a secret key peculiar to the node and saved in a secret key storage, and a microprocessor capable of guaranteeing that the content of a memory is not unjustly falsified during the execution of the program.
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