Penyembunyian Data Rahasia pada Citra Digital Berbasis Chaos dan Discrete Cosine Transform
ABSTRACT: Steganography is one
of technique that developed to keep the security of data by hidding or
embedding it in other data media so that it’s content or even it’s existence is
not notice. Many steganography methode have been developed in the last few
years, but it still needed a steganography system with highest capacity and
robustness. By combining and modifying few technic, in this Final Project has
made a steganography system that used to embedding and extracting secret data
in image data form (BMP 8 bit grayscale and 24 bit color), voice data form (WAV
PCM 11.025 KHz 8 bit mono), and text data form (TXT) into cover data in image data
form (BMP 8 bit grayscale). Data hidding was done at frequency domain by
applying DCT (Discrete Cosine Transform) and chaos theory was applied using
logistic map equation. Program was made using Borland Delphi 7 programming
language. By using subjectif quality, RMS (Root Mean Square) metrics, and
similarity ratio measurement parameter, program performance was observed by
doing research consist of: research of initialitation parameter change
influences; research of embedding and extracting secret digital data in image,
voice, and text form into cover digital data in image form; research of program
realibility from data manipulation operation including brigthness modification,
contrast modification, resizing, cropping, and JPEG compression.
Penulis: ANTON PRABOWO, ACHMAD
HIDAYATNO, YULI CHRISTYONO
Kode Jurnal: jptlisetrodd110123
