Ullah, Insaf, Noor Ul Amin, Arif Iqbal Umar, and Hizbullah khattak. “Proxy Promised Signcrypion Scheme Based on Elliptic Curve Crypto System”. International Journal of Computer (IJC) 20, no. 1 (February 15, 2016): 167–173. Accessed April 19, 2024. https://www.ijcjournal.org/index.php/InternationalJournalOfComputer/article/view/541.