caa a22 4500 605447535 CHVBK 20210128100132.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s11042-013-1790-4 doi (NATIONALLICENCE)springer-10.1007/s11042-013-1790-4 Security analysis and improvement of a partial encryption scheme [Elektronische Daten] [Oussama Benrhouma, Houcemeddine Hermassi, Safya Belghith] This paper proposes to cryptanalyze a partial image encryption scheme. Security weaknesses were found in the cryptosystem consisting in the generation of the keystream. We then propose a modified version of the partial encryption scheme to enhance its security together with keeping the benefit of encrypting a reduced amount of data. Our contributions can be resumed in two points : we will first show the insecurity of the cryptosystem under study then we will propose a remedy to resist the described attacks. Springer Science+Business Media New York, 2013 WSN nationallicence Partial encryption nationallicence Security nationallicence Attacks nationallicence Benrhouma Oussama SysComLab, Ecole Nationale d'Ingnieurs de Tunis (ENIT), Tunis, Tunisia aut Hermassi Houcemeddine SysComLab, Ecole Nationale d'Ingnieurs de Tunis (ENIT), Tunis, Tunisia aut Belghith Safya SysComLab, Ecole Nationale d'Ingnieurs de Tunis (ENIT), Tunis, Tunisia aut Multimedia Tools and Applications Springer US; http://www.springer-ny.com 74/11(2015-06-01), 3617-3634 1380-7501 74:11<3617 2015 74 11042 https://doi.org/10.1007/s11042-013-1790-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11042-013-1790-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Benrhouma Oussama SysComLab, Ecole Nationale d'Ingnieurs de Tunis (ENIT), Tunis, Tunisia aut NATIONALLICENCE 700 1- Hermassi Houcemeddine SysComLab, Ecole Nationale d'Ingnieurs de Tunis (ENIT), Tunis, Tunisia aut NATIONALLICENCE 700 1- Belghith Safya SysComLab, Ecole Nationale d'Ingnieurs de Tunis (ENIT), Tunis, Tunisia aut NATIONALLICENCE 773 0- Multimedia Tools and Applications Springer US; http://www.springer-ny.com 74/11(2015-06-01), 3617-3634 1380-7501 74:11<3617 2015 74 11042