Research On White-box And Its Applcations

With the popularity of mobile terminals,now cryptographic algorithm software generally runs at the terminal, However, these terminals are naturally exposed in front of a hacker, so it will reveal a lot of important operation information, Reverse engineering attack method by combining static analysis, dynamic analysis will get the cipher key. The situation is called white-box attack. Traditional encryption algorithms, such as AES,DES, can't against the white box attack. In order to cope with this situation, the white box encryption algorithm emerge as the times require.Analyse the implementation of classical white-box encryption algorithm and its Faults, and improve it. Using code obfuscation, anti tampering techniques, watermark technology to strengthen the white box cryptography algorithm. The main purpose of the improvement is to achieve a white-box that balances security and efficiency, focusing on the algorithm's applicability. white-box is applied in the intelligent home system, digital right protection, software anti tamper, which the smart home described the basic principle and protocol in detail.Home system communicates by ZigBee, using white-box in mobile terminal, common encryption algorithm in ZigBee terminal. The system can prevent an attacker to steal data and cant detect the illegal data. The software tamper proof has the innovation, make up for the current anti tamper technology to deal with the problem of the dynamic attack.