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Introduction to Cryptography

Now let’s talk in details about 3 major concepts: Computer Security OSI Security Architecture Cryptography 1- Computer security A definition of computer security consists of 3 concepts, we can name these concepts as CIA security concept Confidentiality Integrity Availability Confidentiality Assure that confidential information is not available to unauthorized users. Integrity Assure that information are only changed in a specified and authorized manner. Availability Assure that services are available to authorized users.
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