A customized 152 bit key DES algorithm
El Agooz, S., Amer, E., Shehata, A., Ahmed, M. (2010). A customized 152 bit key DES algorithm. EKB Journal Management System, 7(7th International Conference on Electrical Engineering ICEENG 2010), 1-13. doi: 10.21608/iceeng.2010.32840
Salah S. El Agooz; Essam Abd Elwanees Amer; Alan Eldin R. Shehata; Mahmoud Y. Ahmed. "A customized 152 bit key DES algorithm". EKB Journal Management System, 7, 7th International Conference on Electrical Engineering ICEENG 2010, 2010, 1-13. doi: 10.21608/iceeng.2010.32840
El Agooz, S., Amer, E., Shehata, A., Ahmed, M. (2010). 'A customized 152 bit key DES algorithm', EKB Journal Management System, 7(7th International Conference on Electrical Engineering ICEENG 2010), pp. 1-13. doi: 10.21608/iceeng.2010.32840
El Agooz, S., Amer, E., Shehata, A., Ahmed, M. A customized 152 bit key DES algorithm. EKB Journal Management System, 2010; 7(7th International Conference on Electrical Engineering ICEENG 2010): 1-13. doi: 10.21608/iceeng.2010.32840

A customized 152 bit key DES algorithm

The International Conference on Electrical Engineering
Article 8, Volume 7, 7th International Conference on Electrical Engineering ICEENG 2010, May 2010, Page 1-13  XML PDF (637.45 K)
Document Type: Original Article
DOI: 10.21608/iceeng.2010.32840
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Authors
Salah S. El Agooz1; Essam Abd Elwanees Amer2; Alan Eldin R. Shehata3; Mahmoud Y. Ahmed4
1Brig.Gen.Prof.Dr., Military Technical College, Cairo, Egypt.
2Col.Dr., Military Technical College, Cairo, Egypt.
3Col.Ass.Prof.Dr., Military Technical College, Cairo, Egypt.
4Capt.Eng., Egyptian Armed Forces.
Abstract
In this paper, we proposed a novel technique for modification of the Data Encryption Standard (DES) to ensure a security enhancement against cryptographic attacks that were the main problem in DES algorithm. The proposed modification extended the key size from 64 bit to 152 bit, these extra bits are added to make the S-boxes be dynamically instead of the standard DES where it has static S-boxes, In this paper two approaches are introduced for Algorithm modification. The paper also includes a performance evaluation comparison between the proposed algorithm and the standard DES at different settings for data sizes, data type and encryption/decryption speed. The results show that the proposed techniques for algorithm modification make the DES algorithm stronger against cryptographic attacks compared to standard DES algorithm.
Keywords
security; DES evaluation; encryption time; throughput
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