plaintext attacks

The big question, why are we encrypting messages with El Gamal, it's a key
exchange protocol and signature protocol. That is what it should be used
for. On the up and up though, El Gamal is typically strong against adaptive
chosen plaintext attacks, as well as generic chosen plaintext attacks.

Lance
----- Original Message ----- 
From: <auto97841-revL73yDgGBWk0Htik3J/[email protected]>
To: <[email protected]>
Sent: Wednesday, August 13, 2003 6:16 AM
Subject: [iip-dev] plaintext attacks


>
> if an attacker can get a Destination to encrypt a large number of messages
> to the attacker (so that the attacker has the plaintext and ciphertext),
>  at what point will there be effective attacks against the ElGamal private
> key?
>
> (I'm not concerned about the AES session key, as that is shared anyway)
>
> Basically, is ElG vulnerable to plaintext attacks?
>
> -jrandom
>
>
>
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