Cryptographic key distribution method and system
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United States of America Patent
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Jun 23, 1992
Issued Date -
N/A
app pub date -
Mar 25, 1991
filing date -
Aug 7, 1989
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Abstract
A method for establishing cryptographic communications comprising the steps of: generating a first key-encryption-key signal; transforming, using a public-key-encryption algorithm, the first key-encryption-key signal to a first ciphertext signal; generating a second key-encryption-key signal; transforming, using the public-key-encryption algorithm, the second key-encryption-key signal to a second ciphertext signal; decoding, using the public-key-decryption algorithm, the first ciphertext signal and the second ciphertext signal, thereby generating the first key-encryption-key signal and the second key-encryption-key signal; transforming, using a secret-key-encryption algorithm, the first key-encryption-key signal and the second key-encryption-key signal to a third ciphertext signal; and decoding, using a secret-key-decryption algorithm and the first key-encryption-key signal, the third ciphertext signal thereby generating the second key-encryption-key signal.
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