ANALISA IMPROVISASI ALGORITMA RSA BERDASARKAN DARI JUMLAH PENGGUNAAN BILANGAN PRIMA PADA INSTANT MESSAGING BERBASIS SOCKET TCP

RSA algorithm was discovered since 1977 and is still used until the present era. RSA algorithm has a very slow performance when compared with symmetric cryptography algorithm so a lot of research done to improve perfomanya. The main purpose of RSA algorithm is user security. RSA algorithm has many security holes for example, known plain text attack and wiener attack. This study analyzed the comparison of performance between standard RSA algorithm and RSA improvised algorithm implemented on java based TCP sockets and also analyzed security comparison of standard RSA algorithm and RSA algorithm improvement with known plain text attack and wiener attack method. The number of primes used in RSA improvisation algorithms varies from 2 to 6 primes. This research succeeds in concluding the factors that update RSA algorithm performance. In addition, this study also succeeded in concluding the factors that update RSA algorithm security from known plain text attack and wiener attack