Technical Documentation: a hybrid encryption scheme based on certificates in the standard model of cloud computing

A hybrid encryption scheme based on certificates in the standard model of cloud computing

Ping Herdach

With the rapid development of cloud computing, data security has become a key problem of cloud security, especially the large amount of data stored and transmitted in the cloud and the high security requirements. On the other hand, based on the certificate cryptosystem, it overcomes the problem of the traditional public key cryptosystem and the key escrow based on the identity cipher system, and provides a new method for constructing the security and efficient PKI, but the existing certificate-based encryption schemes mostly adopt bilinear pair structure, and the computational efficiency is low. Aiming at the cloud computing environment, a hybrid encryption scheme based on Diffie is proposed based on the problem of decision reduction, and the security and efficiency are analyzed. The scheme is a secret encryption scheme based on key encapsulation algorithm, symmetric encryption algorithm and message authentication code algorithm. The analysis shows that the scheme can resist the adaptive selective ciphertext attack under the standard model, and it is more efficient to encrypt the long message with high security requirements in cloud computing.

A hybrid encryption scheme based on certificates in the standard model of cloud computing