Abstract
Despite the number of users accessing and storing your personal information in cloud services has increased considerably, there still is a certain barrier regarding to cloud adoption. Data security and confidentiality can be considered one of main reasons that affect both sides, clients and cloud providers. Some techinques has been implemented to hamper the data violation and inapropriated access, such as two-factor authentication, that requires two or more factors to liberate the service access to an user. This work presents a performance analisys of two-factor authentication system considering three different virtual environments (KVM, Xen, and VMware Player hypervisors). For the two-factor authentication process, we use the traditional login and password mechanism, and the One Time Password (OTP), as second factor; and for the identity management, we use the OpenID protocol that allows a Single Sign One access. Results show KVM hypervisor has the best performance when compared to two others.
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