Password alone is not trusted for user online authentication since mere password cannot
give full surety of proper access control. The authentication of the users is one of the key …

Abstract CAPTCHA as “Completely Automated Public Turing test to tell Computers and
Humans Apart” is becoming an essential tool to help reduce many automated security …

Authentication is the process of verifying the identity of online computer users. It can be
confirmed using various methods such as captchas or encrypted hashed passwords to …

Smartphone devices are often assuming the role of edge systems in mobile IoT scenarios
and the access to cloud-based services through smartphones, for transmitting multiple …

The recent period has witnessed automated crawlers designed to automatically crack
passwords, which greatly risks various aspects of our lives. To prevent passwords from …

Privacy-preserving biometrics identification has drawn greater attention that efficiently
provides secure storage of sensitive information in cloud servers. In this paper, we design a …

Over the past decade, several public web services made an attempt to prevent automated
scripts and exploitation by bots by interrogating a user to solve a Turing-test challenge …

Captcha is an abbreviation of Completely Automated Public Turing test to Tell Computers
and Humans Apart. It is a technique used for verification purposes in many applications …

The huge issues that emerge when user access the cloud for gaining the services are the
security and privacy preservation. So a way should have been discovered to keep up the …

Cloud Computing has emerged as a revolutionary technology which has proven its impact
on various fields which require large data storage and high end processing services …