Method for implementing a private-key communication protocol between two processing devices
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United States of America Patent
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May 1, 2001
Grant Date -
N/A
app pub date -
Sep 24, 1997
filing date -
Dec 28, 1994
priority date (Note) -
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Abstract
A method for implementing private key protocols between two processing devices of which at least one is a portable storage medium. The devices are fitted with a digital processing circuit for performing modular calculation operations with a view to executing operations such as modular multiplication, the processing circuit is used to implement a private key encryption function consisting of a series of reversible operations comprising at least a combination of two operations, i.e. a modular calculation operation and a binary logic operation, and said function is applied either for encrypting or signing messages to be transmitted, or for decrypting received messages.
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