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**Unformatted text preview: **given only the ciphertext . This is usually the hardest task a cryptanalyst must doof course Ceasers cipher is a trivial cipher. We discussed Attacks on Cryptosystems in class and gave a special name to this attack. What was it called? A ciphertext only attack. 3. The One-Time Pad. This is an encryption system that oers perfect secrecy . This means that (True or False): given a plaintext, the corresponding ciphertext is random. TRUE given a ciphertext, the corresponding plaintext is random. FALSE the plaintext is random. FALSE the ciphertext is random. TRUE Mike Burmester...

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