The key is an important component for any cryptography algorithms. If the key is breached by the cyber attacker, then the cyber attacker encrypts the confidential message. In symmetric cryptographic, only one key is used for encryption and decryption, and it has weakness of symmetric cryptography. So, the problem can be solved by proposing Advanced Encryption Standard (AES) which is symmetric cryptography and Paillier system which is a asymmetric cryptography are used. The private key of AES is encrypted by Paillier cryptography. The message is encrypted by private key of AES cryptography and the private key of AES is encrypted by the public key of Paillier cryptography. The computed results are reported in the form of table and graph.