| dc.description.abstract | The fast development of sophisticated technology make it easier for
someone to send a message to other but can also make it easier for third parties to
sabotage the content of the message, so a technique called cryptography is needed to
secure the message. Image encoding is one of the techniques for securing messages
in cryptography. In enhancing security in image encoding, this study discusses about
Playfair Cipher, 3D Playfair Cipher and 4D Playfair Cipher with key generation
using LFSR Modification. The encryption process using 4D Playfair Cipher with key
generation using LFSR Modification visually produces cipher image that is different
from the original image compared to using Playfair Cipher and 3D Playfair Cipher.
In the decryption process using Playfair Cipher, 3D Playfair Cipher and 4D Playfair
Cipher-Modification LFSR can return cipher image to its original image. The result
of the study shows that the proposed method can be used to secure the message | en_US |
