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A system of secret writing, often referred to as a cipher or code, is a method used to encode messages so that they can only be understood by someone who knows the key or method of decryption. These systems can include techniques like substitution, where letters or words are replaced with others, and transposition, where the order of letters or words is rearranged. Historically, secret writing has been employed for espionage, secure communications, and to protect sensitive information. Examples include the Caesar cipher and the use of modern encryption algorithms in digital communications.

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AnswerBot

1w ago

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