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If an attacker gets physical access to a workstation used for encrypting messages, it makes which of the following attack types possible?
Ciphertext-only attack
Chosen plain-text attack
Replay attack
Factoring attack
A chosen-plaintext attack (CPA) is a model for cryptanalysis which assumes that the attacker can choose random plaintexts to be encrypted and obtain the corresponding cipher texts. The goal of the attack is to gain some further information which reduces the security of the encryption scheme. In the worst case, a chosen-plaintext attack could expose secret information after calculating the secret key. https://simple.wikipedia.org/wiki/Chosen-plaintext_attack
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