Cryptographic key management apparatus and method
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United States of America Patent
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Aug 23, 1994
Grant Date -
N/A
app pub date -
Dec 15, 1992
filing date -
Dec 15, 1992
priority date (Note) -
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Abstract
A method for establishing a secure communications link between first and second terminals includes a step of exchanging a first message. The first message contains information describing encryption devices and communications modes available within the terminals and user authentication information. The method also includes a step of selecting, in at least one terminal, a common key generation and ciphering algorithm. The method further includes steps of exchanging a second message for providing data to form traffic keys, exchanging a third message for synchronizing secure communications and initiating secure communication.
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