Increasing the Security of E-commerce Systems Using Some Models of Combined Cryptography

Secure communications are an important precondition of e-commerce transactions and are required for confidential electronic communications. Every e-commerce system relies on encryption to secure data transmission by controlling data access and protect information on the internet and ultimately boost consumer confidence. By implementing encryption, integrity is maintained while digital authentication is enforced, thus allowing both customers and merchants to verify the identity of the other party, a concept fundamental to secure online credit card transactions. In this paper we will explain the basic concepts of encryption and the needs and opportunities of using several cryptographic systems. Next, we will present some of the most recent algorithms which are supporting and enabling these confidential electronic communications. At the same time we will compare and evaluate individual algorithms by taking into consideration the security aspect and their complexity.