Algoritma Enkripsi Selektif Citra Digital dalam Ranah Frekuensi Berbasis Permutasi Chaos

Algoritma Enkripsi Selektif Citra Digital dalam Ranah Frekuensi Berbasis Permutasi Chaos

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<p>This paper presents a selective image encryption in frequency domain. At first, the image is <br />transformed into frequency domain with Discrete Cosine Transform (DCT), and then DCT coefficients are <br />scanned in zigzag, and elements of the low-frequency sub-band are extrac...

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Main Author: Rinaldi Munir
Format: Article
Language:English
Published: Universitas Syiah Kuala 2015-05-01
Series:Jurnal Rekayasa Elektrika
Online Access:http://www.jurnal.unsyiah.ac.id/JRE/article/view/82
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spelling doaj-8cf2e225d7ad4596b027949ae977e9df2020-11-24T20:54:10ZengUniversitas Syiah KualaJurnal Rekayasa Elektrika1412-47852252-620X2015-05-0110210.17529/jre.v10i2.822195Algoritma Enkripsi Selektif Citra Digital dalam Ranah Frekuensi Berbasis Permutasi ChaosRinaldi Munir<p>This paper presents a selective image encryption in frequency domain. At first, the image is <br />transformed into frequency domain with Discrete Cosine Transform (DCT), and then DCT coefficients are <br />scanned in zigzag, and elements of the low-frequency sub-band are extracted. Encryption is performed only on <br />selected elements by scrambling them using 2D chaos map, namely Arnold Cat Map. Next, IDCT is applied to <br />obtain the encrypted image. The encryption algorithm is included in lossy encryption. Experiments on both <br />grayscale images and color images show that the images can be encrypted succesfully. Histograms of the encrypted <br />images differ significantly from histogram of the original images, and the pixels in the encrypted images are not <br />longer correlated.</p>http://www.jurnal.unsyiah.ac.id/JRE/article/view/82
collection DOAJ
language English
format Article
sources DOAJ
author Rinaldi Munir
spellingShingle Rinaldi Munir
Algoritma Enkripsi Selektif Citra Digital dalam Ranah Frekuensi Berbasis Permutasi Chaos
Jurnal Rekayasa Elektrika
author_facet Rinaldi Munir
author_sort Rinaldi Munir
title Algoritma Enkripsi Selektif Citra Digital dalam Ranah Frekuensi Berbasis Permutasi Chaos
title_short Algoritma Enkripsi Selektif Citra Digital dalam Ranah Frekuensi Berbasis Permutasi Chaos
title_full Algoritma Enkripsi Selektif Citra Digital dalam Ranah Frekuensi Berbasis Permutasi Chaos
title_fullStr Algoritma Enkripsi Selektif Citra Digital dalam Ranah Frekuensi Berbasis Permutasi Chaos
title_full_unstemmed Algoritma Enkripsi Selektif Citra Digital dalam Ranah Frekuensi Berbasis Permutasi Chaos
title_sort algoritma enkripsi selektif citra digital dalam ranah frekuensi berbasis permutasi chaos
publisher Universitas Syiah Kuala
series Jurnal Rekayasa Elektrika
issn 1412-4785
2252-620X
publishDate 2015-05-01
description <p>This paper presents a selective image encryption in frequency domain. At first, the image is <br />transformed into frequency domain with Discrete Cosine Transform (DCT), and then DCT coefficients are <br />scanned in zigzag, and elements of the low-frequency sub-band are extracted. Encryption is performed only on <br />selected elements by scrambling them using 2D chaos map, namely Arnold Cat Map. Next, IDCT is applied to <br />obtain the encrypted image. The encryption algorithm is included in lossy encryption. Experiments on both <br />grayscale images and color images show that the images can be encrypted succesfully. Histograms of the encrypted <br />images differ significantly from histogram of the original images, and the pixels in the encrypted images are not <br />longer correlated.</p>
url http://www.jurnal.unsyiah.ac.id/JRE/article/view/82
work_keys_str_mv AT rinaldimunir algoritmaenkripsiselektifcitradigitaldalamranahfrekuensiberbasispermutasichaos
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