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I am writing a paper and I got comments from the reviewer that I don’t really understand.

Is there any difference between a CPA (Chosen Plaintext Attack) and IND-CPA (Indistinguishability under Chosen Plaintext Attack) when evaluating the security of an encryption scheme?

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    $\begingroup$ IND-CPA means you "survive" a CPA. CPA by itself is no security notion but an adversary model. "CPA-secure" usually refers to IND-CPA. $\endgroup$
    – SEJPM
    Commented Oct 2, 2015 at 16:47

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IND-CPA is equivalent to semantic security under CPA.

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