Confidentiality - Ensures that data is not disclosed to unintended persons. This is provided through encryption, which converts the data into a form that makes it less likely to be usable by an unintended recipient., Integrity - Ensures that data is not modified or tampered with. This is provided through hashing., Availability - Ensures the uptime of the system so that data is available when needed., Non-repudiation - Provides validation of a message's origin. For example, if a user sends a digitally signed email, they cannot claim later that the email was not sent. Non-repudiation is enforced by digital signatures.,

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