One Time Pad (OTP) dengan Mersenne Twister dan Dependent RSA 1 (DRSA-1) dalam Skema Hybrid Cryptosystem

Abstract

The development of technology is now increasingly rapid and makes the threats to important data and information even higher. Information confidentiality can be maintained in more than one way, one of which is by disguising the message as a password. One of the cryptographic techniques used to secure data is the Hybrid Cryptosystem method by combining symmetric and asymmetric algorithms to encrypt the message to be sent. The message information obtained will be encrypted using the One Time Pad algorithm, the OTP key is generated using the Mersenne Twister algorithm, and the message encryption key that has been generated is obtained using the Dependent RSA 1 (DRSA-1) algorithm. To increase the security of the message, the One Time Pad algorithm and the Dependent RSA 1 (DRSA-1) algorithm must be used together with a more secure algorithm. The One Time Pad algorithm process maintains the privacy of the data or information you want to send but is relatively easy to use. Dependent RSA 1 (DRSA-1) algorithm is a variation of the RSA algorithm. This variant of RSA has been proven to be semantically secure against adaptive attacks on selected ciphertexts. The complexity of the Dependent RSA 1 (DRSA-1) algorithm lies in the size of the numbers created. The larger the prime number, the higher the complexity of the calculation. The average time of OTP encryption is 20.6 milliseconds and the average time of DRSA1 encryption is 20.8 milliseconds while the average time of OTP decryption is 1 millisecond and the average time of DRSA1 decryption is 22.4 milliseconds.