Program update method and server
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United States of America Patent
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May 26, 2009
Grant Date -
Sep 20, 2007
app pub date -
May 14, 2007
filing date -
Nov 15, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system including a secure LSI 1 establishes a communication path to/from a server 3 (UD1), and receives a common key-encrypted program generated by encryption with a common key and transmitted from the server 3 (UD6 and UD7). The received common key-encrypted program is decrypted to generate a raw program, and the raw program is re-encrypted with an inherent key to newly generate an inherent key-encrypted program, which is stored in an external memory.
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