Apparatus and method for ensuring data integrity of unauthenticated code
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 26, 2005
Grant Date -
N/A
app pub date -
Jun 15, 2000
filing date -
Jun 15, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method for ensuring data integrity of unauthenticated code is provided. With the apparatus and method, a hash value of unauthenticated code is embedded in associated automatically authenticated code. When the automatically authenticated code is downloaded and executed, the automatically authenticated code may require that the unauthenticated code also be downloaded for proper execution of the automatically authenticated code on a particular client device. The unauthenticated code can be downloaded and its integrity verified by generating a hash value of the unauthenticated code and comparing the generated hash value to a hash value embedded in the automatically authenticated code. If there is a match, the unauthenticated code is verified. If there is not a match, the unauthenticated code has been corrupted during transmission and is not verified. As a result, the unauthenticated code is not used by the client device. The download of the unauthenticated code can then be attempted again and the verification process repeated.
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