scholarly journals Sistem Keamanan Data Text Dengan Data Encryption Standard (DES) Dan Metode Least Significant Bit (LSB)

2018 ◽  
Vol 1 (2) ◽  
pp. 11-20
Author(s):  
Indra Pratistha ◽  
Paholo Iman Prakoso
Keyword(s):  
Data Security ◽  
Digital Images ◽  
Computer Systems ◽  
Data Encryption ◽  
The Internet ◽  
Least Significant Bit ◽  
Data Encryption Standard ◽  
The Road ◽  
Current Information ◽  
Require Data

Current information can be delivered quickly without knowing the geographical boundaries using the internet. However, the information transmitted can be intercepted by the middle of the road which is not desired, then the security of the data actually becomes a very important issue. The development of computer systems and networks and the interconnection through the Internet has increased, of course, require data security and reliable message in order to avoid the attack. To secure internet data or message network necessary cryptographic encryption methods, one method of data encryption that there is a method of data encryption standard (DES) and subsequently inserted into the Lakeside digital images (steganography) using the method of least significant bit (LSB).

IMPLEMENTASI ALGORITMA ADVANCED ENCRYPTION STANDARD DAN TRIPLE DATA ENCRYPTION STANDARD UNTUK MENGAMANKAN CITRA DIGITAL

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Mahadi Winafil ◽  
Sinar Sinurat ◽  
Taronisokhi Zebua
Keyword(s):  
Digital Images ◽  
Data Encryption ◽  
Advanced Encryption Standard ◽  
The Internet ◽  
Client Server ◽  
Data Encryption Standard ◽  
Aes Algorithm ◽  
Encryption And Decryption ◽  
Cryptographic Techniques ◽  
E Mail

Digital images that are personal and confidential are very vulnerable to wiretapping by irresponsible parties. Especially if distributed via the internet network such as on Facebook, WhatsApp and e-mail chat based applications. Images that are sent sometimes are often confidential images and must be maintained. In order to maintain the security of digital images can be done by utilizing cryptographic techniques. Cryptographic techniques can secure digital images by changing pixel values from digital images so as to produce different pixel values from the original image to be secured. This research will use AES 128 bit and Triple DES methods for encryption and decryption of digital images on client-server based applications. The results of the encryption AES algorithm will be re-encrypted with the Triple DES Algorithm so as to produce pixel values that are far different from the original pixel values. Keywords: cryptography, image, AES, Triple DES

STEGANOGRAFI DENGAN MENGGUNAKAN METODE LSB DAN ALGORITMA HILL CIPHER

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Sherly Gina Supratman
Keyword(s):  
Digital Images ◽  
Text Messages ◽  
The Internet ◽  
Digital Imagery ◽  
Least Significant Bit ◽  
Hill Cipher ◽  
Secure Data ◽  
Audio Video ◽  
The Hill

AbstrakJaringan Komunikasi seperti Internet� merupakan jaringan yang tidak aman untuk mentransmisi data, seperti teks, audio,video dan citra digital. Salah satu cara untuk pengamanan data dapat dilakukan dengan menggunakan proses kriptografi dan �steganografi. Penggunaan ini dengan tujuan untuk merahasiakan pesan yang dikirim dan sekaligus menghindarkan pesan tersebut dari kecurigaan pihak lain yang tidak berkepentingan.Pesan yang digunakan dalam makalah ini adalah berupa text dengan menyisipkannya pada gambar. Pada proses kriptografi, pesan yang berupa text akan dienkrip dengan algoritma Hill Chiper, dan kemudian pesan yang telah dienkrip akan dilakukan proses steganografi pada citra digital� 8 bit dengan skala 0 � 255, dengan metode Least Significant Bit ( LSB ).�Kata kunci: Kriptografi, Hill Chiper, Steganografi, Least Significant Bit�AbstractCommunication Networks such as the Internet are unsafe networks for transmitting data, such as text, audio, video and digital imagery. One way to secure data can be done by using cryptography and steganography process. This use is for the purpose of concealing messages being transmitted and avoiding such messages from the suspicion by others who are not interested.The message used in this paper is text by inserting it in the image. In the cryptographic process, text messages will be encrypted with the Hill Chiper algorithm, and then the encrypted message will be steganographed on 8-bit digital images on a scale of 0-255, using the Least Significant Bit (LSB) method.�Keywords: Cryptography, Hill Chiper, Steganography, Least Significant Bit

scholarly journals Encryption of DES Algorithm in Information Security

2018 ◽  
Author(s):  
Andysah Putera Utama Siahaan
Keyword(s):  
Information Security ◽  
Data Security ◽  
Block Cipher ◽  
Personal Data ◽  
Block Size ◽  
Data Encryption ◽  
Business Practices ◽  
Security Systems ◽  
Data Encryption Standard ◽  
Private Key

Information security is the protection of personal and non-personal data from various threats to guarantee privacy. For business practices, data security can reduce business risk, and increase the return of investment and business opportunities. In designing information system security systems, there are information security aspects that need to be considered. Many threats will come before the information circulating. Information is a matter that will be targeted by wild parties. Cryptographic algorithms are needed to protect data from these threats. Data Encryption Standard (DES) belongs to the symmetry cryptography system and is classified as a block cipher type. DES operates on 64-bit block size. DES encrypts 64 plaintext bits into 64-bit ciphertext using 56 private key bits or subkeys. The internal key is generated from an external key that is 64 bits long. The DES method is an excellent cryptographic technique used to secure data. DES has 16 rounds to ensure safer data against unexpected attacks. Applying DES to data encryption will be very useful for protecting data.

scholarly journals Aplikasi Kriptografi dan Steganografi Menggunakan Metode Least Significant Bit (LSB) dan One Time Pad (OTP)

MATICS ◽  
2016 ◽  
Vol 8 (1) ◽  
pp. 1
Author(s):  
Ali Mahmudi ◽  
Sandy Nataly Mantja ◽  
Achmad Rozikin
Keyword(s):  
Information Technology ◽  
Digital Images ◽  
Internet Technology ◽  
The Internet ◽  
Least Significant Bit ◽  
Exchange Of Information ◽  
Secure Information ◽  
Internet Network

<p style="text-align: justify;"> With the development of technology, especially in the IT field, the more developed also the current exchange of information using internet technology. Security of information transmitted via the Internet network is a must to maintain the confidentiality and originality of the information. Technology to maintain the security of the information used in this paper is a cryptography and steganography. Application cryptography to secure information on the text, then the information is hidden in digital images. So that only users who have a lock / unlock passwords only, can read the message in greeting such information.</p>

scholarly journals Time performance analysis of advanced encryption standard and data encryption standard in data security transaction

2019 ◽  
Vol 16 (2) ◽  
pp. 988
Author(s):  
Zolidah Kasiran ◽  
Hikma Farah Ali ◽  
Noorhayati Mohamed Noor
Keyword(s):  
Performance Analysis ◽  
Data Security ◽  
Data Exchange ◽  
Data Communication ◽  
Data Encryption ◽  
Advanced Encryption Standard ◽  
File Format ◽  
Data Encryption Standard ◽  
Time Performance ◽  
Aes Algorithm

The advancement of the data communication technologies has increased the traffic of data exchange over the internet and at the same time created the opportunity of data attack by various party.  This paper present  Time Performance Analysis Of Advanced Encryption Standard And Data Encryption Standard  in Data Security Transaction<strong>. </strong>In this study we proposed an AES algorithm with  different key size, and different file format. Our aim is to safely to transfer the file for using the AES algorithm. Proposed algorithm has done by analyzing the different time taken for both AES and DES, experiments were done by three different file  format which were text, image, and voice. Each file format type was tested with five different file sizes. The result of each experiments were analysed and it was confirmed that  the AES algorithm have better performance in term of time taken as compared to DES.

scholarly journals Compensation of degradation, security, and capacity of LSB substitution methods by a new proposed hybrid n-LSB approach

2021 ◽  
pp. 48-48
Author(s):  
Kemal Tütüncü ◽  
Özcan Çataltaş
Keyword(s):  
Logistic Map ◽  
Hybrid Approach ◽  
Data Encryption ◽  
Secret Message ◽  
Least Significant Bit ◽  
Substitution Method ◽  
Data Encryption Standard ◽  
Hybrid Approaches ◽  
Encryption Algorithms ◽  
Lsb Substitution

This study proposes a new hybrid n-LSB (Least Significant Bit) substitution-based image steganography method in the spatial plane. The previously proposed n-LSB substitution method by authors of this paper is combined with the Rivest-Shamir-Adleman (RSA), RC5, and Data Encryption Standard (DES) encryption algorithms to improve the security of the steganography, which is one of the requirements of steganography, and the Lempel-Ziv-Welch (LZW), Arithmetic and Deflate lossless compression algorithms to increase the secret message capacity. Also, embedding was done randomly using a logistic map-based chaos generator to increase the security more. The classical n-LSB substitution method and the proposed hybrid approaches based on the previously proposed n-LSB were implemented using different secret messages and cover images. When the results were examined, it has been seen that the proposed hybrid n-LSB approach showed improvement in all three criteria of steganography. The proposed hybrid approach that consists of previously proposed n-LSB, RSA, Deflate, and the logistic map had the best results regarding capacity, security, and imperceptibility.

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