Algoritma Hill Cipher untuk Enkripsi Data Teks yang Digunakan untuk Steganografi Gambar dengan Metode LSB (Least Significant Bit)

Abstract

The development of current advances in information technology, the ease with which the perpetrators of computer crime (cyber crime), or which often referred to as crackers, script kiddies, carder, lamers terms or other names, with the misuse of computer technology to support its activities, where their activities very disturbing someone's privacy. Therefore we need a secure system or application that can be difficult for computer criminals to conduct their activities, and assist the users of technology in terms of security of the data accessed. To complicate the perpetrators of computer crimes, the authors combine the methods of Hill Cipher encryption algorithm with the method of steganographic LSB (Least Significant Bit), which is expected to increase the security of the data. Steganography using LSB (Least Significant Bit) is the simplest technique. Therefore steganography with this method is very suitable for novices in the field of steganography. Method of LSB (Least Significant Bit) of data storage by replacing bits - bits that are not significant (least significant pixels) on the file (file) container (cover) with the bits of the file will be saved. To improve the security of data to be stored, encrypted data is also stored in advance, that is encrypted with the method of Hill Cipher.