Frequency analysis is the study of letters or groups of letters contained in a ciphertext in an attempt to partially reveal the message.

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If the text was compressed before using traditional cryptography, how much difficulty increases for frequency analysis attack?

Traditional encryption is weak and no longer be used. They can be easily broken by using frequency analysis is a well-known fact. But, the frequency analysis often depends on the number of captured ...
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Type of cipher used where ciphertext has no discernible pattern, spaces. Type?

What type of cipher could give ciphertext where for example random ASCII chars between say F-z (symbols and numerals inclusive), but with only a few spaces? Frequency of chars shows some similarities ...