Fast real-time public key cryptography
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United States of America Patent
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Aug 16, 1983
Grant Date -
N/A
app pub date -
Feb 9, 1981
filing date -
Feb 9, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a public key cryptographic system (FIG. 1) for communicating securely over an insecure communication channel (3), a sender (1, 2) enciphers a data message (D) using a public enciphering knapsack key (H) to generate an enciphered message (S.sub.H). An authorized receiver (4 6, 7, 20, 21, 22) with knowledge of a private deciphering key (E), a modulus (M) and an integer multiplier (W) generates a private enciphering key (A) which is employed in further enciphering the received enciphered message to form a doubly enciphered message (S.sub.E, S.sub.E). The doubly enciphered message is deciphered using the private deciphering key alone to recover the original data message.
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