Abstract
The Internet is the communication path used in data exchange. Nevertheless, the delivery process is often experienced disturbance caused by outsiders who are not interested. In addressing the security disorder and abuse, then used cryptographic techniques. This research method using Hybrid cryptography with the aim to cover each other’s weaknesses between symmetric and asymmetric cryptographic algorithms. The algorithms used in this research is a symmetric algorithm Triple DES (Data Encryption Standard) and ElGamal asymmetric algorithms. Triple DES is the development of the algorithm DES. Triple DES needs three keys with the length of each 56 bits to perform encryption and decryption. Messages to be encrypted is a message that has the extension *.txt. ElGamal algorithm requires the public key, and private key, as well as the ElGamal algorithm, will also perform the encryption against key Triple DES. The public key used during encryption and private keys used during the process of decryption key Triple DES. As for the results of this research is the larger the size of the message then the longer time it takes to perform the Triple DES algorithm encryption and decryption. Time needed encryption algorithm Triple DES and ElGamal for longer than the time it takes to do the decryption. After the encryption process, the number of characters in the ElGamal algorithm becomes larger.
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More From: IOP Conference Series: Materials Science and Engineering
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