Theory and Implementation of Data Encryption Standard: A Review

An Application of a Fast Data Encryption Standard Implementation

The Data Encryption Standard is used as the basis for the UNIX password encryption scheme. Some of the security of that scheme depends on the speed of the implementation. This paper presents a mathematical formulation of a fast implementation of the DES in software, discusses how the mathematics can be translated into code, and then analyzes the UNIX password scheme to show how these results ca...

Hardware Implementation of the Data Encryption Standard (DES)

This paper presents hardware implementation of the data encryption and decryption of the DES standard algorithm. The design consists of the S-Box circuit Exclusive-OR circuit, Circular Left Shift circuit and the control unit. The S-Box circuit implemented using 32 PLDs (Programmable Logic Device) chip that hold substitution a 48-bits input data and yields a 32-bits output data. The other circui...

Data Encryption Standard

In 1972, the NBS Institute for Computer Sciences and Technology (ICST) initiated a project in computer security, a subject then in its infancy. One of the first goals of the project was to develop a cryptographic algorithm standard that could be used to protect sensitive and valuable data during transmission and in storage. Prior to this NBS initiative, encryption had been largely the concern o...

A New Fast Data Encryption Algorithm (FDE)

The Data Encryption Standard (DES)

The Data Encryption Standard (DES) [31] has been around for more than 25 years. DES was an outcome of a call for primitives in 1974 which didn’t result in many serious candidates except for a predecessor of DES, Lucifer [15, 35] designed by IBM around 1971. It took another year for a joint IBM–NSA effort to turn Lucifer into DES. The structure of Lucifer was significantly altered and since the ...