Generating user-dependent keys and random numbers
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United States of America Patent
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Feb 3, 2004
Grant Date -
N/A
app pub date -
Jun 2, 1999
filing date -
Jun 2, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods, systems and computer program products are provided which generate a cryptographic key utilizing user specific information to generate a user dependent key. The user specific information may be a user identification or biometric information associated with a user. In particular embodiments of the present invention a seed value is modified with biometric information to generate a user dependent key value. In alternative embodiments a key value is hashed with user specific information or user specific information is hashed and then combined with the key value to generate the user dependent key value. In still another embodiment of the present invention the space of potential key values is divided into subspaces and the subspaces assigned based on user specific information. A key value is then generated from the assigned subspace. Thus, the generated key values for different users are guaranteed to be disjoint.
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