+A **cipher** is a secret method for transforming a [Message](/wiki/Message), making it unreadable without special knowledge. It uses an [Algorithm](/wiki/Algorithm) and often a secret key to scramble information, safeguarding its content from unintended eyes.
+## See also
+- [Decryption](/wiki/Decryption)
+- [Cryptography](/wiki/Cryptography)
+- [Key](/wiki/Key)
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