Experimental analysis of image encryption using elgamal and block-substitution method for color images. Issue 5 (4th July 2017)

• Record Type: Journal Article
• Authors: Lokeshwari, G.; Udaya Kumar, S.; Susarla, Sreevidya
• Is Part Of: Journal of information & optimization sciences. Volume 38:Issue 5(2017)
• Page Start: 745
• Page End: 757
• Publication Date: 2017-07-04
• Subjects: Image encryption -- Block cipher -- Byte code -- Block substitution; Electronic data processing -- Periodicals; Information science -- Periodicals; Mathematical optimization -- Periodicals; 519.6
• DOI: 10.1080/02522667.2016.1251026
• Languages: English
• ISSNs: 0252-2667

Abstract

Abstract: This paper presents an encryption technique for color images. In this method byte code is extracted from the color image which is converted into binary data. Cipher text is generated by applying Block substitution encryption method on the obtained binary data. The effectiveness of the proposed method has been estimated by computing chi-square value. Obtained results show that the encryption method is suitable for both symmetric and asymmetric images of larger size.