Abstract:
This thesis is on “Confidential Message Transaction in a Cardless Electronic Payment
System”.Nowadays people want the modern system as well as much more user friendly than before. In a
card, less electronic payment system messages are used instead of credit or debit cards. This messagesarepassedbetweendifferententitiesinordertodoelectronictransactionsoveranetwork. The
security of the cardless electronic payment system is a critical issue. In this process, it defines this security and the confidentiality of messages in the cardless payment system.The messages passed
between different entities are secured by using hybrid encryption and decryption technique. The
Analysis of different pair of encryption/decryption algorithms which are RSA-DES, RSA-AES
andRSA-TRPLEDESinthehybridencryptiontechniqueisdoneandconclusionsaredrawnonthe basis
of execution time and memory usage. Experimental results show that RSA-DES executes faster
and takes less memory so it is most suitable for hybrid encryption/decryption of messages.
