Securing multifactor split key asymmetric crypto keys
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United States of America Patent
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Dec 25, 2012
Grant Date -
Aug 12, 2010
app pub date -
Mar 23, 2010
filing date -
Feb 14, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
Techniques for securing an asymmetric crypto-key having a public key and a split private key with multiple private portions are provided. A first one of multiple factors is stored. All of the factors are under the control of a user and all are required to generate a first private portion of the split private key. The first private portion not stored in a persistent state. A second private portion of the split private key under control of an entity other than the user is also stored. The first private portion and the second private portion are combinable to form a complete private portion.
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