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Acryptographic attack in which portions of the ciphertext are selected for trial decryption while having access to the corresponding decrypted plaintext is known as what type of attack?
Correct Answer: A
The correct answer is "Chosen ciphertext. In answer Known plaintext, the attacker has a copy of the plaintext corresponding to the ciphertext. Answer Chosen plaintext describes the situation where selected plaintext is encrypted and the output ciphertext is obtained. The adaptive chosen plaintext attack, answer "Adaptive chosen plaintext, is a form of chosen plaintext attack where the selection of the plaintext is altered according to previous results.