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Tumbul, Erwin
mobile-sec-notifier
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11caad9e
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11caad9e
authored
3 years ago
by
Wistauder, Martin
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updated protocol
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@@ -12,7 +12,12 @@
2.
B sends A's id_code to the server.
3.
The server checks if it matches and returns a comm_id to B.
2.
Generate and exchange an ephemeral key.
1.
A and B generate a RSA key-pair.
1.
A and B generate RSA public-private key pairs.
2.
A and B exchange public keys.
3.
A and B encrypt their chosen secret value and send them to each other.
4.
A and B decrypt the received secret values and add them to their secret value.
5.
The result is the ephemeral key.
3.
Instantiate symmetric encryption using the ephemeral key.
1.
AES, CTR-mode
4.
Authenticate each other directly.
5.
(?) Check communication transcript (avoid malicious server).
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