Abstract:
The data security is useful not only for strong and
communication data in secret but also for ensuring that the
source of the message is valid and that the message has not
been altered. Cryptography was created as a technique for
securing the secrecy of communication and many different
methods have been developed to encrypt and decrypt data in
order to keep the message secret. There are different types of
encryption algorithms used to protect sensitive data including
symmetric, asymmetric encryption techniques. In this paper,
each department makes sample questions and encrypt sample
questions and send to the exam authorized group. The
authorized group save encrypted questions to the database and
take one questions from the database by random. The exam
authorized group decrypts the question and distribute plain text
question. This paper implements a security system that provides
arrangement of secure examination questions by using Elgamal
Algorithm.
