Are letter frequency analysis attack effective against substitution cipher?

Letter frequency analysis is a technique used in cryptanalysis to break substitution ciphers, which are a type of classical cipher. A substitution cipher is a method of encoding where each letter in the plaintext is replaced with another letter. The Caesar cipher, where each letter in the plaintext is shifted a certain number of places

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Are substitution ciphers an example of asymmetric ciphers?

Substitution ciphers are a type of classical cryptographic technique that have been used for centuries to encrypt messages. In the context of cryptographic methods, they fall under the category of symmetric ciphers rather than asymmetric ciphers. To understand why this is the case, it is essential to consider the definitions and characteristics of symmetric and

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