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Research Paper

Year: 2020 | Month: February | Volume: 7 | Issue: 2 | Pages: 140-144

Combination Analysis of Data Encryption Standard (DES) Algorithm and LUC Algorithm on File Security

Fahmi Ruziq¹, Poltak Sihombing², Sawaluddin²

¹Postgraduate Students at Universitas Sumatera Utara, Medan, Indonesia
²Postgraduate Lecturer at Universitas Sumatera Utara, Medan, Indonesia

Corresponding Author: Fahmi Ruziq

ABSTRACT

Cryptography is a science of encryption techniques, where the data to be encrypted will be encrypted using a key into data that is difficult to read for other parties who do not have a decryption key. DES algorithm is a symmetric cipher block cryptographic algorithm that uses a block size of 64 bits and a key size of 56 bits. LUC algorithm is an asymmetric cryptographic algorithm that uses two primes to generate public keys and secret keys. Hybrid crypto systems can provide a greater level of security. In this study the DES algorithm will be used to encrypt the message, while the LUC algorithm is used to encrypt the DES external key before the key is sent to the recipient. The results of the study are the length of the file character is directly proportional to the time of the encryption and decryption process. In combination the DES algorithm and the LUC algorithm are very dependent on the LUC key generation process. If the p value and the q value used are greater the longer the LUC key generation process. The repeated encryption process with the same DES external keywords using the LUC algorithm will produce different cipherkeys. Message security using hybrid DES and LUC algorithm cryptography is better because the cipherkey generated from DES external key encryption is different and longer.

Keywords: Cryptography, DES, LUC, Hybrid Crypto

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