Saving and retrieving data based on symmetric key encryption
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United States of America Patent
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-
Sep 8, 2009
Grant Date -
Mar 22, 2007
app pub date -
Nov 8, 2006
filing date -
Apr 17, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
In accordance with certain aspects, data is received from a calling program. Ciphertext that includes the data is generated, using a symmetric cipher, in a manner that allows only one or more target programs to be able to obtain the data from the ciphertext. In accordance with other aspects, a bit string is received from a calling program. An identifier of the calling program is checked to determine whether the calling program is allowed to access data encrypted in ciphertext of the bit string. The integrity of the data is also verified, and the data is decrypted using a symmetric key. The data is returned to the calling program only if the calling program is allowed to access the data and if the integrity of the data is successfully verified.
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