Method of bilateral identity authentication
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United States of America Patent
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Jul 27, 2004
Grant Date -
N/A
app pub date -
Oct 25, 2000
filing date -
Oct 25, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A method for bilateral identity authentication over a communication channel provides a secure method for authenticating the identity of the communicating parties and establishing a secret key. Each party computes an authentication challenge based on an exchanged value used in a key generation procedure. The authentication challenge is encrypted to the other party's public key. After receiving an encrypted authentication channel from the other party, each party deciphers the authentication challenge and generates an authentication response based on the authentication challenge. The authentication response includes bits that the challenging party cannot predict in advance to prevent fraudulent use of the authentication response by the challenging party or some other third party. After receiving an authentication response from the other party, each party verifies that the expected authentication response was received.
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