In this paper

we propose an approach to verify the trustworthiness of big data including the trustworthiness of data source and data content.The trustworthiness of data source is achieved by verifying the identity of data owner based on public key certificate.We design an interactive challenge-response protocol to verify the trustworthiness of data content on the basis of simple random sampling test and aggregated signature-based broadcast encrypting scheme.The protocol can make the users who know the public parameters of the data owner validate the verification result with high probability by sampling only a small amount of data.Formal security analysis and experimental evaluations are also conducted

showing that the proposed scheme is practical to achieve the design goal for big data.