System and method for delivering encrypted information in a communication network using location indentity and key tables
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United States of America Patent
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Jun 25, 2013
Grant Date -
Apr 19, 2007
app pub date -
Nov 20, 2006
filing date -
Oct 30, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
Access to digital data is controlled by encrypting the data in such a manner that it can be decrypted only at a specified location, within a specific time frame, and with a secret key. Data encrypted in such a manner is said to be geo-encrypted. This geo-encryption process comprises a method in which plaintext data is first encrypted using a data encrypting key that is generated at the time of encryption. The data encrypting key is then encrypted (or locked) using a key encrypting key and information derived from the location of the intended receiver. The encrypted data encrypting key is then transmitted to the receiver along with the ciphertext data. The receiver both must be at the correct location and must have a copy of the corresponding key decrypting key in order to derive the location information and decrypt the data encrypting key.
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