System and method for cryptographic key exchange using matrices
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United States of America Patent
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Dec 31, 2013
Grant Date -
Jun 28, 2012
app pub date -
Dec 28, 2010
filing date -
Dec 28, 2010
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Abstract
Two parties can establish a cryptographic key using a matrix based key exchange protocol, for secure communications without any prior distribution of secret keys or other secret data, and without revealing said key to any third party who may have access to all of the transmissions between them. A common matrix M, shared in advance, is multiplied by a random matrix K on the sending side, and a different random matrix N on the receiving side. The matrix product KM is sent from the sending side to the receiving side, and the matrix product MN is sent from the receiving side to the sending side. Both sides produce the common matrix product KMN, and use it for producing a symmetric key for encrypted communications.
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