Explain the different classes of attacks that should be resisted by a secure block cipher

Explain the different classes of attacks that should be resisted by a secure block cipher

Expert Solution

A secure cipher should usually resist three types of attacks

Chosen plain text attack is a model for cryptanalysis which assumes that the attacker can choose the random plain text to be encrypted and obtain the corresponding cipher text.

The main goal of this isto retreive some extra information which can reduce the security of the encryption scheme.

Chosen cipher text attacks where the attacker can get information by obtaining the decryptions of the chosen cipher text.

Known plain text attacks where the attacker has access to both the plain text and its encrypted version.

Please find the attached image for the classes a secure block cipher can resist.

venereology answered 1 year ago

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