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2 votes

Is it safe to use ECDH shared secret as a simple authentication cookie?

You're essentially using knowledge of an ECDH shared secret to prove knowledge of the private key associated with your static public key, thus authenticating yourself to the server. If you use the ...
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0 votes

UF-naCMA not implies UF-CMA

A good place to start is likely to be Bellare et al's 1998 paper Relations Among Notions of Security for Public-Key Encryption Schemes. In particular, their theorem 3.7 shows that NM-CCA1 does not ...
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