Facilitating digital signature based on ephemeral private key
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United States of America Patent
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Feb 10, 2009
Grant Date -
Jul 13, 2006
app pub date -
Aug 8, 2005
filing date -
Jan 7, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
Facilitating communication using a digital signature includes: receiving user input data (UID); generating a first key as a deterministic function of the UID; clearing the UID; generating a second key as a deterministic function of the first key; clearing the first key following generation of the second key; and exporting the second key. Neither the UID nor the first key is exported. Thereafter, a digital signature is generated by again receiving the UID; regenerating the first key using the deterministic function and the UID; clearing the UID; generating a digital signature as a function of the regenerated first key; clearing the regenerated first key following generation of the digital signature; and exporting the generated digital signature.
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