Secrecy which makes it extremely difficult for an intruder who is able to intercept the ciphertext to be able to determine its corresponding plaintext.
Authenticity which makes it possible for the recipient to validate the source of a message.
Integrity which makes it possible to ensure that the message sent cannot be modified in any way during transmission.
Nonrepudiation which makes it possible to ensure that the sender of the message cannot later turn around and disown the transmitted message.
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