Confidentiality and Integrity Protection Method Based on One Time Encryption

Aiming at current problem of high computing overhead of encryption and authentication, this paper proposes a confidentiality and integrity protection method based on one time encryption. The method packages data block and verification data together, and then encrypts it. The confidentiality is guaranteed by traditional encryption mode and the integrity is guaranteed by decrypted verification data. Analysis and simulation show that the method has less time and space overhead than standard encryption and authentication mode. The method can be applied to other integrity and confidentiality protection schemes, and can meet the performance requirements of the most applications.