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Development Of An Encryption Algorithm Based On The Caesar Cipher Algorithm a) Computer Engineering Technology, Politeknik Negeri Samarinda Abstract The problem in securing data is still an important aspect in maintaining data storage, especially data stored in digital form. This causes due to very rapid progress in the field of computers with the concept of an open system that has been widely used, so this can make it easier for someone to do data destruction that requires data stored in digital. This security usually uses encryption. Encryption is the process of communicating information by making that information unreadable without the help of special knowledge. So that encrypted data can be read, the decryption process is needed. The decryption process is used so that the message can be read again by the intended party. One of the algorithms to carry out the encryption and decryption process is the Caesar cipher algorithm, which algorithm is one of the most widely studied. However, the Caesar cipher algorithm has a disadvantage including all letters can be covered, do not recognize lowercase or uppercase letters. It is necessary for the development of the Caesar cipher. The purpose of this research is to develop an encryption algorithm based on the caesar cipher algorithm. A result of this research is a development of a Caesar cipher algorithm that includes more characters, namely A-Z, a-z, 0-9, and comma and space characters. In this study also used a change of 3 characters vertically (below). Keywords: caesar cipher, decryption, encryption Topic: Engineering |
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