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seen Jun 21 '13 at 11:10

Jun
12
awarded  Notable Question
Oct
17
awarded  Popular Question
Nov
22
asked Message space in security definitions
Nov
21
accepted Can you help with that definition for a CCA?
Nov
20
awarded  Editor
Nov
20
revised Can you help with that definition for a CCA?
added 4 characters in body
Nov
20
asked Can you help with that definition for a CCA?
Nov
19
comment How does a chosen ciphertext attack work, with a simple example?
Yeah that what I get too! I just cant see how it works in the chosen-ciphertext-attack scenario! I mean..the way I see it is that it really comes down to guessing in the end!
Nov
19
comment How does a chosen ciphertext attack work, with a simple example?
Ok! And how does the attacker then actually get the plaintext if he is not allowed to query the oracle on the ciphertext that was "sniffed"?
Nov
19
comment How does a chosen ciphertext attack work, with a simple example?
Are you not confusing it with CPA?? I thought that in a CCA attack the adversary submits 2 ciphertexts and gets the decryption of one of them! Also what exactly is the IND property? I know that it stands for indistinguishability but cant see how it relates! Does it have to do with the fact that the adversary sends 2 msgs and tries to tell them apart or...?
Nov
19
awarded  Supporter
Nov
19
comment How does a chosen ciphertext attack work, with a simple example?
Ermm...Yeah I suppose that would count as communication! I think that for some particular schemes it is possible in theory but I cant figure out (or find anywhere) how this is achieved!
Nov
19
comment How does a chosen ciphertext attack work, with a simple example?
Yeah but it definitely requires some sort of "unprotected" communication though right?
Nov
19
awarded  Student
Nov
19
awarded  Scholar
Nov
19
accepted How does a chosen ciphertext attack work, with a simple example?
Nov
18
asked How does a chosen ciphertext attack work, with a simple example?