ANALISIS PERBANDINGAN ENKRIPSI MENGGUNAKAN ALGORITMA RIVEST CODE 4 (RC4) DAN ALGORITMA CAESAR CIPHER

TONI WIBOWO , NIM. 10651014 (2014) ANALISIS PERBANDINGAN ENKRIPSI MENGGUNAKAN ALGORITMA RIVEST CODE 4 (RC4) DAN ALGORITMA CAESAR CIPHER. Skripsi thesis, UNIVERSITAS ISLAM NEGERI SUNAN KALIJAGA.

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Abstract

Security and confidentiality of data in computer network now days is an important issue and continuously growing. In maintaining the security and confidentiality of data or information in computer network required the protection to make data or information can not be read or understood others, except the right recipient. This research is develop a web-based application that is able to secure data from the form text files with doc and txt extension by encrypt using RC4 algorithm and the Caesar Cipher Algorithm. The object for analysis in this research is the size of the file, processing time, and performance (speed) of encryption and decryption process. The algorithm that used for encryption is RC4 algorithm and Caesar Cipher. RC4 algorithm to encrypt the plaintext digit per digit or byte per byte by combining the XOR operation with a key stream. And the Caesar Cipher algorithm will encrypt the plaintext caesarean section by shifting the position of the letter. The final results of this research is produce an application that able to secure data in the form text files by encrypt using RC4 algorithm and Caesar Cipher Algorithm and analytical results in terms of file size, processing time and speed of encryption and decryption process. Based on the results of testing the functionality of the application, all respondents agreed that the application is made as function as it should be, which is 100% agree and 0% disagree. Based on the test results of interface applications, 47.5% said strongly agree, 45% agree, 7.5% neutral, disagree 0% and 0% strongly disagree.

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