Confidentiality, cryptography property: only the recipient who owns a particular secret (e.g. key) can understand the message, Authenticity, cryptography property: when we have some assurance that a message is from the source it claims to be from, Safe, program that isn't a malware, then it is not able to break any host or steal information, Secure, program the cannot (or rather it's very difficult to) be circumvented, Algorithm, set of steps to follow to modify a message, Key, sequence of digits, Ciphertext, encrypted message.

Cryptography

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