The ind-cpa tag has no wiki summary.
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1answer
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Proof that padded RSA is CPA-secure
I'm referring to page 383 of J. Katz and Y. Lindell's Introduction to Modern Cryptography. The book presents a padded RSA:
${\bf Key Generation:}$ same as Textbook RSA (given security parameter ...
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2answers
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Why is an Encrypt-and-MAC scheme with deterministic MAC not IND-CPA secure?
I'm preparing myself to exam, but I have a lot of troubles with rigorous proofs. It's the task from two-years ago exam. At the bottom I reminded one definition.
Let $(Gen_E,Enc,Dec)$ be an ...
1
vote
1answer
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Adversary Two Stages
I am read this paragraph and I have a doubt.
"An adversary to PKC $\Pi$ is given by two probabilistic polynomial
time algorithms, $A = (A1; A2)$. In the first stage, the "find"
stage, the ...
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0answers
42 views
IND-CPA security scheme [duplicate]
Possible Duplicate:
CPA Secure Chosen plaintext scheme
The example for IND-CPA secure schemes given is generally:
for a random r,
$Enc_k(m) =(r|| E_k(r)$ $XOR$ $m)$ where $E$ is a $PRF$
...
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1answer
99 views
Indistinguishability CPA and CCA2
I am study security notions in two lecture and I am cofusing with the concepts IND-CCA and IND-CPA2. About IND-CCA in wikipedia say
Indistinguishability under chosen ciphertext attack/adaptive chosen
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