Kombinasi Kriptografi Playfair Cipher dan Steganografi Dengan LSB Untuk Keamanan Data Teks

Wahyuni, Sri (2019) Kombinasi Kriptografi Playfair Cipher dan Steganografi Dengan LSB Untuk Keamanan Data Teks. Other thesis, Universitas Islam Riau.

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Abstract

A message is a secret statement made by someone and intended for someone else who is desired. In the process of sending message security a very important factor. One way to secure messages can be done by combining cryptography and steganography. The aim is to keep messages sent that can be done with cryptographic processes, as well as avoiding the message from suspicion that can be done with the steganography process. The message used in this study is text. In the cryptographic process, the message in the form of text will be encrypted with the Playfair Cipher method, and then the encrypted message will be steganographed on 8-bit grayscale digital images on a scale of 0- 255, with the Least Significant Bit (LSB) method. The results of this study are that by using a Playfair Cipher and Steganography cryptographic method in insertion, encrypted messages are difficult to return to their original messages by unauthorized parties. The result of this application is that it can insert hidden messages in the form of text into PNG format digital image files and can extract the hidden message from the image (stego-image).

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