Secure communication system and method using shared random source for key changing
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United States of America Patent
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Jan 17, 2012
Grant Date -
Mar 30, 2006
app pub date -
Jul 16, 2002
filing date -
Jul 17, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
Apparatus for use by a first party for key management for secure communication with a second party, said key management being to provide at each party, simultaneously remotely, identical keys for said secure communication without transferring said keys over any communication link, the apparatus comprising: a datastream extractor, for obtaining from data exchanged between said parties a bitstream, a random selector for selecting, from said bitstream, a series of bits in accordance with a randomization seeded by said data exchanged between said parties, a key generator for generating a key for encryption/decryption based on said series of bits, thereby to manage key generation in a manner repeatable at said parties.
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