Question: Suppose a message has been encrypted using a substitution cryptosystem. Is it easier for an eavesdropper to use frequency analysis on the ciphertext to decrypt

Suppose a message has been encrypted using a substitution cryptosystem. Is it easier for an eavesdropper to use frequency analysis on the ciphertext to decrypt the message if the message is longer or if the message is shorter? Explain in a sentence or two.

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