Usability and Security of Arabic Text-based CAPTCHA Using Visual Cryptography  

作　　者：Suliman A.Alsuhibany Meznah Alquraishi 

机构地区：[1]Department of Computer Science,College of Computer,Qassim University,Buraydah,51452,Saudi Arabia

出　　处：《Computer Systems Science & Engineering》2022年第2期421-440,共20页计算机系统科学与工程（英文）

摘　　要：Recently,with the spread of online services involving websites,attack-ers have the opportunity to expose these services to malicious actions.To protect these services,A Completely Automated Public Turing Test to Tell Computers and Humans Apart(CAPTCHA)is a proposed technique.Since many Arabic countries have developed their online services in Arabic,Arabic text-based CAPTCHA has been introduced to improve the usability for their users.More-over,there exist a visual cryptography(VC)technique which can be exploited in order to enhance the security of text-based CAPTCHA by encrypting a CAPTCHA image into two shares and decrypting it by asking the user to stack them on each other.However,as yet,the implementation of this technique with regard to Arabic text-based CAPTCHA has not been carried out.Therefore,this paper aims to implement an Arabic printed and handwritten text-based CAPTCHA scheme based on the VC technique.To evaluate this scheme,experi-mental studies are conducted,and the results show that the implemented scheme offers a reasonable security and usability levels with text-based CAPTCHA itself.

关 键 词：Visual cryptography Arabic text-based CAPTCHA USABILITY SECURITY printed and handwritten Arabic script 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]