Cloud Authentication Based on Anonymous One-Time Password

摘要

Cloud computing contains many enterprise applications that require from each user to perform authenticate at first step. Then, he will gain a permit from the service provider to access resources at second step. The issue breach remains facing a modern computing model. A more secure scheme is the two-factor authentication (2FA) that requires a second factor (such as finger print, token) with username/password. Nevertheless, the feasibility of 2FA is largely limited by high device cost, malicious attack and the deployment complexity. In this paper, we propose a scheme of 2FA in cloud computing systems that depends on One-Time Password (OTP), Asymmetric Scalar-product Preserving Encryption (ASPE) and RSA digital signature as two factors. Furthermore, it overcomes aforementioned issues and does not require extra devices such as token device, card reader in smart card and scanner in physiological biometrics. The proposed scheme distinguishes to resist practical attacks, high-security level, anonymous password, mutual authentication, identity management, the cloud server and a user can establish authenticated session keys, reduces the cost, and good performance.