Cipher is a type of encryption algorithm used to secure data. It is a mathematical algorithm that takes plaintext as input and produces an encrypted output. Ciphers are used to protect data from unauthorized access and to ensure the confidentiality of information. They are also used to authenticate data, ensuring that it has not been tampered with or altered in any way. Ciphers are used in a variety of applications, including secure communication, digital signatures, and data storage.
