Proteksi citra digital menggunakan kriptografi dan steganografi berbasis Chaos = Digital image protection using Chaos based cryptography and steganography
| Main Author: | Zulfany Nurluthfia, author |
|---|---|
| Format: | Bachelors Thesis |
| Terbitan: |
, 2016
|
| Subjects: | |
| Online Access: |
http://lib.ui.ac.id/file?file=digital/2016-5/20422495-S62152-Zulfany Nurluthfia.pdf |
| ctrlnum |
20422495 |
|---|---|
| fullrecord |
<?xml version="1.0"?>
<dc schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><title>Proteksi citra digital menggunakan kriptografi dan steganografi berbasis Chaos = Digital image protection using Chaos based cryptography and steganography</title><creator>Zulfany Nurluthfia, author</creator><type>Thesis:Bachelors</type><place/><publisher/><date>2016</date><description>[<b> ABSTRAK</b><br>
Pada era digital ini, bertambahnya tingkat kejahatan dunia maya, seperti
pencurian, pemalsuan, dan penyalahgunaan informasi yang sifatnya rahasia, telah
memicu berkembangnya teknik pengamanan informasi. Dua teknik yang dapat
digunakan untuk mengamankan informasi adalah kriptografi dan steganografi.
Tujuan dari skripsi ini adalah menyusun algoritma penyembunyian informasi
berupa citra digital dengan menggabungkan dua teknik, yaitu teknik enkripsi
menggunakan keystream yang dibangkitkan oleh fungsi logistic map dan teknik
penyisipan Least Significant Bit (LSB) berpola 3-3-2. Dari hasil pengujian dan
analisis, ditemukan bahwa algoritma ini memiliki ruang kunci sebesar 1030,
sensitivitas kunci hingga 10&#8722;16, keystream yang dihasilkan terbukti acak
berdasarkan frequency (monobit) test, distribusi nilai pixel-pixel dari citra
terenkripsinya adalah uniform, dan nilai PSNR antara cover object dengan stego
object di kisaran 47.123 &#8722; 57.586 yang mana mengindikasikan bahwa stego
object yang dihasilkan memiliki kualitas imperceptibility yang baik.
<hr>
<b>ABSTRACT</b><br>
In this digital era, the increasing number of cyber crime, such as theft, forgery,
and abuse of secret information, has triggered the development of information
security techniques. Two techniques that could be used to secure information are
cryptography and steganography. The purpose of this bachelor thesis is to design
an algorithm to hide information in image form using the combination of two
techniques, encryption technique with keystream generated by logistic map
function and Least Significant Bit (LSB) with 3-3-2 pattern to embed information.
According to various tests and analysis, it is discovered that this algorithm has key
space of 1030, key sensitivity up to 10&#8722;16, keystream that is proved to be random
by frequency (monobit) test, pixel value distribution of encrypted image is
uniform, and PSNR between cover object and stego object is in range 47.123 &#8722;
57.586 which indicates that the produced stego object has good imperceptibility
quality., In this digital era, the increasing number of cyber crime, such as theft, forgery,
and abuse of secret information, has triggered the development of information
security techniques. Two techniques that could be used to secure information are
cryptography and steganography. The purpose of this bachelor thesis is to design
an algorithm to hide information in image form using the combination of two
techniques, encryption technique with keystream generated by logistic map
function and Least Significant Bit (LSB) with 3-3-2 pattern to embed information.
According to various tests and analysis, it is discovered that this algorithm has key
space of 1030, key sensitivity up to 10&#8722;16, keystream that is proved to be random
by frequency (monobit) test, pixel value distribution of encrypted image is
uniform, and PSNR between cover object and stego object is in range 47.123 &#8722;
57.586 which indicates that the produced stego object has good imperceptibility
quality.]</description><subject>Chaos</subject><subject>Digital image</subject><subject>Cryptography</subject><identifier>20422495</identifier><source>http://lib.ui.ac.id/file?file=digital/2016-5/20422495-S62152-Zulfany Nurluthfia.pdf</source><recordID>20422495</recordID></dc>
|
| format |
Thesis:Bachelors Thesis Thesis:Thesis |
| author |
Zulfany Nurluthfia, author |
| title |
Proteksi citra digital menggunakan kriptografi dan steganografi berbasis Chaos = Digital image protection using Chaos based cryptography and steganography |
| publishDate |
2016 |
| topic |
Chaos Digital image Cryptography |
| url |
http://lib.ui.ac.id/file?file=digital/2016-5/20422495-S62152-Zulfany Nurluthfia.pdf |
| contents |
[<b> ABSTRAK</b><br>
Pada era digital ini, bertambahnya tingkat kejahatan dunia maya, seperti
pencurian, pemalsuan, dan penyalahgunaan informasi yang sifatnya rahasia, telah
memicu berkembangnya teknik pengamanan informasi. Dua teknik yang dapat
digunakan untuk mengamankan informasi adalah kriptografi dan steganografi.
Tujuan dari skripsi ini adalah menyusun algoritma penyembunyian informasi
berupa citra digital dengan menggabungkan dua teknik, yaitu teknik enkripsi
menggunakan keystream yang dibangkitkan oleh fungsi logistic map dan teknik
penyisipan Least Significant Bit (LSB) berpola 3-3-2. Dari hasil pengujian dan
analisis, ditemukan bahwa algoritma ini memiliki ruang kunci sebesar 1030,
sensitivitas kunci hingga 10−16, keystream yang dihasilkan terbukti acak
berdasarkan frequency (monobit) test, distribusi nilai pixel-pixel dari citra
terenkripsinya adalah uniform, dan nilai PSNR antara cover object dengan stego
object di kisaran 47.123 − 57.586 yang mana mengindikasikan bahwa stego
object yang dihasilkan memiliki kualitas imperceptibility yang baik.
<hr>
<b>ABSTRACT</b><br>
In this digital era, the increasing number of cyber crime, such as theft, forgery,
and abuse of secret information, has triggered the development of information
security techniques. Two techniques that could be used to secure information are
cryptography and steganography. The purpose of this bachelor thesis is to design
an algorithm to hide information in image form using the combination of two
techniques, encryption technique with keystream generated by logistic map
function and Least Significant Bit (LSB) with 3-3-2 pattern to embed information.
According to various tests and analysis, it is discovered that this algorithm has key
space of 1030, key sensitivity up to 10−16, keystream that is proved to be random
by frequency (monobit) test, pixel value distribution of encrypted image is
uniform, and PSNR between cover object and stego object is in range 47.123 −
57.586 which indicates that the produced stego object has good imperceptibility
quality., In this digital era, the increasing number of cyber crime, such as theft, forgery,
and abuse of secret information, has triggered the development of information
security techniques. Two techniques that could be used to secure information are
cryptography and steganography. The purpose of this bachelor thesis is to design
an algorithm to hide information in image form using the combination of two
techniques, encryption technique with keystream generated by logistic map
function and Least Significant Bit (LSB) with 3-3-2 pattern to embed information.
According to various tests and analysis, it is discovered that this algorithm has key
space of 1030, key sensitivity up to 10−16, keystream that is proved to be random
by frequency (monobit) test, pixel value distribution of encrypted image is
uniform, and PSNR between cover object and stego object is in range 47.123 −
57.586 which indicates that the produced stego object has good imperceptibility
quality.] |
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