Method and apparatus for enabling trial period use of software products: method and apparatus for generating a machine-dependent identification
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United States of America Patent
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May 26, 1998
Grant Date -
N/A
app pub date -
Apr 25, 1994
filing date -
Apr 25, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus is provided for distributing a software object from a source to a user. A software object is encrypted with an encryption operation utilizing a long-lived encryption key. It is directed from the source to the user. It is loaded onto a user-controlled data processing system having a particular configuration. A numerical machine identification is derived based at least in part upon the particular data processing system configuration of the user-controlled data processing system. A temporary key is derived which is based at least in part upon the numerical machine identification and the long-lived encryption key. The long-lived key generator is provided for receiving the temporary key and producing the long-lived encryption key. The user is allowed to utilize the temporary key for a prescribed interval to generate the long-lived encryption key to access the software object.
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