Encryption design for the database under the VFP environment based on chaos algorithm

The security of stream cipher, which was defined as one of the important cipher means, and depended on the performance of existing pseudo random series. Chaos algorithm was sensitive to the initial condition, arbitrariness and relativity. They could form fine pseudo- random series. Consequently, these systems were fit for the stream cipher. Firstly, the chaos encryption algorithm was studied depended on the Logistic function. And then a certain encryption/decryption algorithm was established. The encryption/decryption algorithm was obtained under the environment of VFP. This method could confirm the safety of the database operation system.