Abstract:

User files are not stored locally in the application of cloud storage, so the key problems include file security, data confidentiality and data robustness. Firstly, according to the security problems of the existing literature, which does not consider data robustness for data recovery, we construct a threat model by using pseudo random bilinear mapping. Secondly, the interface file block structure is prepared, and an integrity check scheme is designed according to the relevant literature algorithm, which can realize the implementation of multi key server security erase code storage system algorithm, and the calculation complexity of the algorithm is given. Experimental results show that the proposed integrity check scheme can achieve a large probability of successful data retrieval.

Key words: cloud storage, robustness, confidentiality, pseudo random, bilinear mapping, secure erasure code