Improvement in Performace of Advanced Encryption Standard Algorithm Using SLSB

-Most companies and government agencies have a dire need for protecting sensitive information. Encryption, access restriction, and locking documents behind firewalls are some common techniques for protecting sensitive information. Encryption is an effective way for preventing an unauthorized person from viewing the content of a sensitive document. Nonetheless, once the document is decrypted for viewing using the secret key, an ill-intentioned authorized person can save, copy, print, or transmit the unencrypted document anywhere he or she wants without any major difficulty. Many algorithms are invented by researcher for avoidance of risk. One of them is AES algorithm which play important role for better security. In this paper we study about an invention on AES algorithm using SLSB technique. This technique is applied directly on output of AES algorithm. AES is implemented in two ways one is using standard key and other using private key of RSA algorithm. Finally we compare the both results. Keyword: Encryption, RSA, AES, SLSB