Officially verified as accurate reproduction.

Authenticated Encryption is an encryption scheme which simultaneously assures the data confidentiality (also known as privacy: the encrypted message is impossible to understand without the knowledge of a secret key) and authenticity (in other words, it is unforgeable: the encrypted message includes an authentication tag that the sender can calculate only while possessing the secret key).

a proprietary system for delivering high-quality digital audio.

an email authentication system designed to allow an intermediate mail server like a mailing list or forwarding service to sign an email's original authentication results.