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您的检索式：作者名="Yaxing Zha"
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| 1 | Proof of retrievability based on LDPC codes显示文摘In order to reduce the computational overhead of proof of retrievability(POR) scheme, a new POR scheme based on low-density parity-check(LDPC) codes is proposed, noted as LDPC-POR. In the model of PORs scheme, the client preprocesses the data and sends it to an untrusted server for storage, only keeping some metadata. Then, the client sends a challenge to the server to prove that the data stored at the server has neither been tampered nor deleted. In the setup phase of this scheme, the client uses LDPC code to encode the data, and blinds data with permutation and pseudo-random stream. In the challenge phase, the server generates the proof completely based on exclusive OR(XOR), after that the client makes use of the LDPC code to prove the validity of proof. The theoretical analysis shows that this scheme not only reduces the computational overhead, but also saves storage space compared with the classical scheme. In the meantime security proof is also provided in this paper showing that this scheme is feasible. | Bian Jianchao Liu Huixia Luo Shoushan Zha Yaxing Li Wei | 2015 | The Journal of China Universities of Posts and Telecommunications2015，22，4： | 0 |
| 2 | A Novel Provable Data Possession Scheme Based on Geographic Location Attribute显示文摘Increment of mobile cloud video motivates mobile users to utilize cloud storage service to address their demands,cloud storage provider always furnish a location-independent platform for managing user's data.However,mobile users wonder if their cloud video data leakage or dynamic migration to illegal service providers.In this paper,we design a novel provable data possession protocol based on data geographic location attribute,which allows data owner to auditing the integrity of their video data,which put forward an ideal choice for remote data possession checking in the mobile cloud storage.In our proposed scheme,we check out whether the video data dynamic migrate to an unspecified location(such as:overseas) by adding data geographic location attribute tag into provable data possession protocol.Moreover,we make sure the security of our proposed scheme under the Computational Diffie-Hellman assumption.The analysis and experiment results demonstrate that our proposed scheme is provably secure and efficient. | Yaxing Zha Shoushan Luo Jianchao Bian Wei Li | 2016 | China Communications2016，13，9： | 0 |
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