KRIPTOGRAFI FILE CITRA MENGGUNAKAN ALGORITMA TEA (TINY ENCRYPTION ALGORITHM)
Abstract: The sharp growth of
data communication recently raise the importance of data security and
confidentiality. Cryptography is the art or science of maintaining the security
of data or message that randomize the data or message. In addition to
text-based documents, it is also common to send image through a network. This
research investigates the way to secure the image from the cryptanalyst
disorders by using TEA (Tiny Encryption Algorithm) algorith, which is a secret
key cryptographic algorithm. The strength of this algorithm lies in the Feistel
network and the number of delta derived
from the golden number. It was found that the algorithm is appropriate for
encrypting and decrypting image, because of stronger round quantity and key length,
and does not need S-box and P-box in the process. The test showed that this
algorithm with 32 round fits highly for
securing images with optimum speed. It was also found that the bigger image size, the longer the
encryption and decryption process takes time to run, with decrypted image has
different bit depth value compared to original image
Penulis: Mukti Qamal
Kode Jurnal: jptinformatikadd140223
