حلقة نقاشية

Cryptography and Network Security

الكلية الاسلامية الجامعة / الهندسة / هندسة تقنيات الحاسوب

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2014-01-06

يوم واحد

هندسية وتكنولوجيا

لم يحدد رقم الموبايل , [email protected]

الجامعة الاسلامية/ الموقع البديل في بابل

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Message confidentiality is to ensure that message is received by the receiver only and any other person cannot open it. This is achieved by cryptography techniques. Cryptography include symmetric key methods and asymmetric key techniques that encrypt the message to be ciphered, and then is decrypted by the receiver to be opened. Message authentication is to ensure that message is not changed. This can be achieved by a message digest technique by passing the message into an algorithm called hash function.In addition, it is necessary to prove the identity of the sender. Finally, entity authentication is to have two entities to be authenticated one to the other , like a university and a student. This can be achieved by many ways. The simplest way is using passwords.

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