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The FastDES: A New Look of Data Encryption Standard
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 39 - Number 11 |
| Year of Publication: 2012 |
| Authors: Muhammad Nawaz Khan, Ishtiaq Wahid, Atual Aziz Ikram |
10.5120/4865-7249
|
Muhammad Nawaz Khan, Ishtiaq Wahid, Atual Aziz Ikram . The FastDES: A New Look of Data Encryption Standard. International Journal of Computer Applications. 39, 11 ( February 2012), 28-33. DOI=10.5120/4865-7249
Abstract
The FastDES algorithm is based on Data Encryption Standard (DES). In FastDES, the one round function concept of DES are used in three different customs to produce a new fast and more efficient secure algorithm. The DES operates on half of the input data, 32-bit of chunk out of 64 bits, while FastDES take block of 32-bit and work on it simultaneously. The encryption start from 32-bit of data and 32-bit of key bits, which passes from three consecutive rounds and 32-bit of cipher is produce. This algorithm is fast, so it can be used in many further securities mechanisms like Hash functions (MD5, SHA series, HMAC) and modes of the operation like CBC, CFB etc. Because of its fast operations it is also recommended to use with other security applications. The DES round function provide a best confusion-diffusion structure of Substitution-Permutation Network (SPN). The FastDES based on same design criteria of S-boxes and permutation functions of DES. Like 3-DES with two keys and 3-DES with three keys, the FastDES can use 3-FastDES with 2 different keys and 3-FastDES with 3 different keys, which not only enhanced system security but also thwart the cryptanalysis for brute force and meet in meddle attacks.
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