Effective Comparison of Enhanced DES Algorithm
- Payal Prabhudas Patel
- Khushbu Shah
Cryptography, Encryption, Xor, DES
The principal goal to design any encryption algorithm must be secure against unauthorized attacks. Data Encryption Standard algorithm is a symmetric key algorithm and it is used to secure the data. DES works on 64 bit data and 56 bit key. Different enhancements of DES algorithms are available. From the enhanced algorithm, few algorithm works on increasing the key length and few has complex S-BOX design, while other has increased the number of states in which the information is to be represented. In DES-96 improved DES security algorithm has used 84-bit key instead of the original 56-bit key, to resist brute-force attack. This would give 284 ≈ 1.934*1025 trials instead of 256 ≈ 7.205* 1016. By increasing the key length, the number of combinations for key is increases which is hard for the intruder to do the brute force attack. As the S-BOX design will become the complex, there will be a good avalanche effect. As the number of states increases in which the information is represented instead of binary representation, it is hard for the intruder to crack the actual information. Block encryption standard for transfer of data algorithms have minimized the memory requirements and execution time complexity. The total number of combinations required to decipher a 4 byte text is: 232 * 210 * 224 * 26 = 272 units.
Payal Prabhudas Patel, Khushbu Shah. "Effective Comparison of Enhanced DES Algorithm".INTERNATIONAL JOURNAL OF ENGINEERING DEVELOPMENT AND RESEARCH ISSN:2321-9939, Vol.1, Issue 3, pp.103 - 110, URL :https://rjwave.org/ijedr/papers/IJEDR1303022.pdf
Volume 1 Issue 3
Pages. 103 - 110
