Secured Medical Image Hashing Based on Frequency Domain with Chaotic Map
Secured Medical Image Hashing Based on Frequency Domain with Chaotic Map

Amira K. Jabbar; Ashwaq T. Hashim; Qusay F. Al-Doori

Volume 39, 5A , May 2021, , Page 711-722

https://doi.org/10.30684/etj.v39i5A.1786

Abstract
  Recently, online-medicine got increased global interest, particularly during COVID19 pandemic. Data protection is important in the medical field since when promoting telemedicine applications, ...  Read More ...
Propose an Arabic CAPTCHA System based on Chaotic Maps
Propose an Arabic CAPTCHA System based on Chaotic Maps

Mariam T. Sulaiman; Nidaa F. Hassan

Volume 36, 1B , January 2018, , Page 48-52

https://doi.org/10.30684/etj.36.1B.8

Abstract
  CAPTCHA is the facility that prevents web bots from accessingthe web services by generating tests to check whether the user is human orcomputer program. In this paper, a new pseudo-random ...  Read More ...
Speech Encryption Based on Wavelet Transformation and Chaotic Map
Speech Encryption Based on Wavelet Transformation and Chaotic Map

Hala B.Abdul Wahab; Sundus I. Mahdi

Volume 34, 5B , May 2016, , Page 721-729

https://doi.org/https://doi.org/10.30684/etj.34.5B.12

Abstract
  In this paper a new algorithm is presented for speech encryption. It includes dividing the speech signal into overlapped blocks then shuffling those blocks in the time domain. A second ...  Read More ...