Methods and systems for key recovery for a token
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United States of America Patent
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Oct 26, 2010
Grant Date -
Dec 6, 2007
app pub date -
Jun 6, 2006
filing date -
Jun 6, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
Methods, systems and computer readable mediums are provided for recovering keys. A key transport session key is generated, and a key encryption key is derived based on a server master key and an identification associated with a token. The key transport session key is encrypted with the key encryption key as a first wrapped key transport session key. An encrypted storage session key and an encrypted private key are retrieved from an archive. The encrypted storage session key is decrypted with a server storage key as a storage session key. The encrypted private key is decrypted with the storage session key. The decrypted private key is encrypted with the key transport session key as a wrapped private key. The wrapped private key and the first wrapped key transport session key are forwarded.
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