Design of Homomorphic Cloud Platform Based on Onion Encryption Model
摘要
In data decryption process of cloud platform server,it is easy to cause problems of information disclosure,the database administrators spy on users’ privacy information and heavy processing tasks of client.To solve above problems,a design scheme of security private cloud platform based on homomorphic cryptography is proposed.In the private cloud platform scene meeting the demand of bank business processing,by adopting with adjustable onion encryption strategy,ciphertexts can be evaluated directly by additive homomorphism of Paillier and multiplicative homomorphism of ElGamal.Then,frequent interactions between client and server,as well as data encryption and decryption operations can be avoided.Simulation experiment and efficiency analysis results show that the proposed scheme can effectively resist the chosen plaintext attack while ensuring the operation efficiency.