No abstract

An efficient way of ensuring security in cloud is to give secure data access control among untrusted cloud server. Hence to improve the security, a new system could be introduced such as Quantum Security Scheme which invokes Quantum gates for encryption purpose. Quantum cryptography has been rapidly developing these days due to its efficient service which is provided by means of key generation and key distribution. Quantum Ciphertext-Policy Attribute Based Encryption (QCP-ABE) is a promising technique for data access control on encrypted data. This scheme also achieves mutual authentication among those authorities involving in the system and it also achieves both forward and backward security.