Encrypt Medical Image using CSalsa20 Stream Algorithm

Abstract

As a result of the tremendous development in the field of information technology and the internet and

exposure to a flood of violations to circumvent and steal information organized and unorganized. The

urgent need for the emergence of data protection technologies and data encryption techniques. As a result

of the tremendous development in the field of information technology and the internet and exposure to a

flood of violations to circumvent and steal information organized and unorganized. The urgent need for

the emergence of data protection technologies and data encryption techniques one of these methods, The

Salsa20 encryption stream and all of its reduced versions Salsa20 / 7 and Salsa20 / 12 are among the fastest

stream ciphers today. In this paper, the Salsa20 method is therefore improved by adding a new variable by

using chaos theory which can achieve faster propagation than the original Salsa20 and has been applied by

encrypting medical images that need confidentiality because some patients do not want anyone to know

about a disease so the patient’s medical data is encrypted and no one can access it. This method has been

tested and measured with the original Salsa20 with a series of tests. Most tests show that the proposed messy

salsa is faster than the original salsa.