scholarly journals Implementasi Algoritma Data Encryption Standard Pada Penyandian Record Database

2018 ◽  
Vol 2 (1) ◽  
pp. 23
Author(s):  
Neti Rusri Yanti ◽  
Alimah Alimah ◽  
Desi Afrida Ritonga
Keyword(s):  
Block Cipher ◽  
Block Size ◽  
Data Encryption ◽  
Data Encryption Standard ◽  
Cryptographic Algorithms ◽  
Secure Data ◽  
Cryptographic System

Record databases are generally still often displayed in text form as information for users, so it can facilitate cryptanalyst to access and provide opportunities to do the leak, distribute or modify the database records. One of the cryptographic algorithms used to secure data is using the DES algorithm to encrypt the data to be stored or sent. The DES algorithm belongs to a cryptographic system of symmetry and is a type of block cipher. DES operates on a 64-bit block size. DES describes 64 bits of plaintext to 64 bits of ciphertext using 56 bits of internal key (internal key) or up-key (subkey). The internal key is generated from an external key 64-bit length. This research describes the process of securing database records by encrypting it based on DES algorithm, resulting in text record databases in the form of passwords that are difficult to understand and understand by others. This is done in an attempt to minimize the misuse of database records.

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.

Cryptanalytic Attacks on IDEA Block Cipher

2016 ◽  
Vol 66 (6) ◽  
pp. 582 ◽  
Author(s):  
Harish Kumar Sahu ◽  
Vikas Jadhav ◽  
Shefali Sonavane ◽  
R.K. Sharma
Keyword(s):  
Block Cipher ◽  
Data Encryption ◽  
Secret Key ◽  
Data Confidentiality ◽  
Data Encryption Standard ◽  
Financial Application ◽  
Time Requirements ◽  
International Data ◽  
Key Block ◽  
Symmetric Key

International data encryption algorithm (IDEA) is a secret key or symmetric key block cipher. The purpose of IDEA was to replace data encryption standard (DES) cipher, which became practically insecure due to its small key size of 56 bits and increase in computational power of systems. IDEA cipher mainly to provide data confidentiality in variety of applications such as commercial and financial application e.g. pretty good privacy (PGP) protocol. Till 2015, no successful linear or algebraic weaknesses IDEA of have been reported. In this paper, author explained IDEA cipher, its application in PGP and did a systematic survey of various attacks attempted on IDEA cipher. The best cryptanalysis result which applied to all keys could break IDEA up to 6 rounds out of 8.5 rounds of the full IDEA cipher1. But the attack requires 264 known plaintexts and 2126.8 operations for reduced round version. This attack is practically not feasible due to above mention mammoth data and time requirements. So IDEA cipher is still completely secure for practical usage. PGP v2.0 uses IDEA cipher in place of BassOmatic which was found to be insecure for providing data confidentiality.

scholarly journals APPLICATION OF CRYPTOGRAPHY WITH DATA ENCRYPTION STANDARD (DES) ALGORITHM IN PICTURE

2020 ◽  
Vol 4 (2) ◽  
pp. 9
Author(s):  
Angga Aditya Permana ◽  
Desi Nurnaningsih
Keyword(s):  
Block Cipher ◽  
Data Encryption ◽  
Third Party ◽  
Original Text ◽  
Symmetric Cryptography ◽  
Data Confidentiality ◽  
Data Encryption Standard ◽  
The Third ◽  
Encryption And Decryption ◽  
The One

Cryptography is the science of maintaining data confidentiality, where the original text (plaintext) is encrypted using an encryption key to be ciphertext (text that has been encrypted). In this case cryptography secures data from a third party so that the third party cannot know the original contents of the data because the one who holds the key for encryption and decryption is only the sender and receiver. There are several cryptographic methods that are commonly used, one of which is DES or Data Encryption Standard. DES is included in the key-symmetric cryptography and is classified as a block cipher type

Symmetric Encryption

2017 ◽  
Author(s):  
Keith M. Martin
Keyword(s):  
Stream Cipher ◽  
Block Cipher ◽  
Block Ciphers ◽  
Data Encryption ◽  
Advanced Encryption Standard ◽  
Symmetric Encryption ◽  
Modes Of Operation ◽  
Data Encryption Standard ◽  
Different Types ◽  
History Of

In this chapter, we focus on symmetric encryption. We begin by identifying two different types of symmetric encryption algorithm, namely, stream and block ciphers. We discuss the basic idea behind a stream cipher and consider their properties and applications. We then introduce block ciphers. We focus on two extremely important and influential block cipher algorithms, the Data Encryption Standard and the Advanced Encryption Standard, discussing the history of their development as well as their basic design. We then introduce the modes of operation of a block cipher, explaining why different modes have been proposed. We examine in detail four of the most well-established modes of operation and their core properties, as well as classifying other modes of operation.

scholarly journals Algebraic Properties of the Block Cipher DESL

Symmetry ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1411 ◽  
Author(s):  
Kenneth Matheis ◽  
Rainer Steinwandt ◽  
Adriana Suárez Suárez Corona
Keyword(s):  
Block Cipher ◽  
Data Encryption ◽  
Alternating Group ◽  
Data Encryption Standard ◽  
Right Hand ◽  
Algebraic Properties ◽  
Lightweight Block Cipher

The Data Encryption Standard Lightweight extension (DESL) is a lightweight block cipher which is very similar to DES, but unlike DES uses only a single S-box. This work demonstrates that this block cipher satisfies comparable algebraic properties to DES—namely, the round functions of DESL generate the alternating group and both ciphers resist multiple right-hand sides attacks.

scholarly journals Formalization of the Data Encryption Standard

2012 ◽  
Vol 20 (2) ◽  
pp. 125-146 ◽  
Author(s):  
Hiroyuki Okazaki ◽  
Yasunari Shidama
Keyword(s):  
United States ◽  
Information Processing ◽  
Block Cipher ◽  
The United States ◽  
Data Encryption ◽  
National Bureau ◽  
Data Encryption Standard ◽  
The World ◽  
Federal Information Processing Standard

Summary In this article we formalize DES (the Data Encryption Standard), that was the most widely used symmetric cryptosystem in the world. DES is a block cipher which was selected by the National Bureau of Standards as an official Federal Information Processing Standard for the United States in 1976 [15].

scholarly journals Data Security with International Data Encryption Algorithm

2017 ◽  
Author(s):  
Robbi Rahim ◽  
Mesran Mesran ◽  
Andysah Putera Utama Siahaan
Keyword(s):  
Information Security ◽  
Data Security ◽  
Data Encryption ◽  
Encryption Algorithm ◽  
Cryptographic Algorithms ◽  
Secure Data ◽  
International Data

Information security is very important nowadays, how to secure data certainly requires a technique one of which is the use of cryptography, IDEA algorithm is one of cryptographic algorithms that can be used to secure the message, and in this research IDEA algorithm process is displayed gradually to facilitate the development of IDEA algorithm in various purposes

scholarly journals Perancangan Teknik Kriptografi Block Cipher Berbasis Pola Permainan Tradisional Rangku Alu

2019 ◽  
Vol 5 (2) ◽  
Author(s):  
Perdana Bagas Tirta Kumbara ◽  
Magdalena A. Ineke Pakereng
Keyword(s):  
Information Technology ◽  
Data Security ◽  
Block Cipher ◽  
The World ◽  
Cryptographic Algorithms ◽  
Secure Data ◽  
Cryptographic Techniques ◽  
Traditional Game

Data security is one of the most important factors in the world of Information Technology today. One way to secure data is by Block Cipher Cryptography technique. However, some cryptographic techniques have been successfully solved by the cryptanalysis so that new cryptographic algorithms need to be created. The design of Cryptography algorithms based on traditional game patterns of Rangku Alu from East Nusa Tenggara is a design of Cryptographic Block Cipher algorithms that operate in the form of bits designed with 10 rounds where each cycle contains four processes. In each round there are four patterns for the plaintext process and four patterns for the key. The fourth process is transformed with an S-Box table to get a more random ciphertext. Tests were also carried out using Avalance Effect which reached 49,38% and the correlation value where there was a change in character reached 73,44%. So the result designing Cryptographic algorithms can be used for encryption and description in text files.

Comparative Study of Cryptographic Algorithms

2019 ◽  
Vol 8 (1) ◽  
pp. 13-22
Author(s):  
Mohanad ABDULHAMID ◽  
Nyagathu GICHUKI
Keyword(s):  
Comparative Study ◽  
Data Encryption ◽  
The Other ◽  
Public Key ◽  
Data Encryption Standard ◽  
Private Key ◽  
Other Hand ◽  
Encryption And Decryption ◽  
Cryptographic Algorithms

This paper presents a comparative study of two cryptosystems, Data Encryption Standard (DES) and the Rivest-Shamir-Adleman (RSA) schemes. DES is a symmetric (or private) key cipher. This means that the same key is used for encryption and decryption. RSA, on the other hand, is an asymmetric (or public) key cipher, meaning that two keys are used, one for encryption and the other for decryption. The objective of this paper is to implement these two schemes in software. The program is written in the Java™ language. It generates a key from a passphrase given by the user, encrypts and decrypts a message using the same key, for the case of DES. In RSA, decryption is done by computing the decryption key from the encryption key. Finally, the program returns the time taken to encrypt and decrypt a message.

scholarly journals A true Random-Number Encryption Method employing block cipher and PRNG

2014 ◽  
Vol 11 (3) ◽  
pp. 905-924 ◽  
Author(s):  
Yi-Li Huang ◽  
Fang-Yie Leu ◽  
Jian-Hong Chen ◽  
Chu Cheng-Chung
Keyword(s):  
Block Cipher ◽  
Random Number ◽  
Data Encryption ◽  
Advanced Encryption Standard ◽  
Random Numbers ◽  
Security Level ◽  
Current Time ◽  
Data Encryption Standard ◽  
Time Points ◽  
Encryption Method

In January 1999, distributed.net collaborated with the Electronic Frontier Foundation to break a DES (i.e., Data Encryption Standard) key, spending 22 hours and 15 minutes, and implying that the DES is no longer a secure encryption method. In this paper, we propose a more secure one, called the True Random Number Encryption Method (TRNEM for short), which employs current time, true random numbers and system security codes as parameters of the encryption process to increase the security level of a system. The same plaintext file encrypted by the TRNEM at different time points generates different ciphertext files. So these files are difficult to be cracked. We also analyze the security of the DES, AES (i.e., Advanced Encryption Standard) and TRNEM, and explain why the TRNEM can effectively defend some specific attacks, and why it is safer than the DES and AES.

Sign in / Sign up

Export Citation Format

Share Document