A Remote Data Integrity Checking Method Supporting Scalability
A technology of integrity checking and remote data, which is applied in the field of Internet of Things security, can solve the problems of high cost of signature and verification, and achieve the effect of satisfying safety and efficiency, reducing communication cost, and reducing computing cost
Active Publication Date: 2017-11-03
SOUTHEAST UNIV
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Problems solved by technology
Current schemes can satisfy requirements (1), (2), (3), (4) and (5), however, requirement (6) is still widely ignored, which leads to signature and verification costs are still high
More importantly, when considering the research topic, we observe that none of the existing cryptographic primitives can be directly used to achieve the goals discussed above
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[0016] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.
[0017] Such as figure 1 The system model of the shown remote data integrity checking scheme includes three entities: data source (DS), data center (DC) and verifier.
[0018] The present invention includes three major parts: an initialization stage, an outsourcing stage and a remote data integrity checking stage.
[0019] Such as figure 2 The initialization phase shown realizes the generation of the public-private key pair and its distribution from the data source (DS) to the data center (DC) a...
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The invention discloses a remote data integrity checking method supporting scalability, comprising the following steps: in the initialization stage, before outsourcing the data to the data center, the data source generates a pair of public and private key pairs, and distributes the public key to the data center Center and verifier; in the outsourcing stage, the data source divides each file into blocks, and generates a signature for each data block, and then uploads the data block and its signature to the data center; in the remote data integrity check stage, the verifier first sends a verification The request is sent to the data center, which then generates a small piece of aggregated proof from the data block and its signature and sends it back to the verifier, who finally checks the proof. The method of the present invention uses simple mathematical operations to replace the encryption operations used in existing solutions, and allows multiple data elements to share only a few encryption operations, which significantly reduces the computational cost of data streams and can effectively reduce remote integrity checks The communication cost satisfies the new security and high-efficiency characteristics of the data integrity protection mechanism.
Description
technical field [0001] The invention relates to a scalable remote data integrity checking method for Internet of Things security, and belongs to the technical field of Internet of Things security. Background technique [0002] Nowadays, Data Centers (DCs) are widely available, in order to provide outsourced services from Data Sources (DSs) (e.g. laptops, smartphones, websites), remote data integrity checking protocols need to be designed to ensure that outsourced data is not compromised by attackers damaged or lost. [0003] Scalability is a serious problem for remote data integrity checking services when the magnitude of data reaches terabytes (TB). Due to limited computing power, data sources have received deep attention due to the extremely high computational cost of signing large-scale data. Unfortunately, current remote data integrity checking techniques mainly focus on properties such as recoverability, privacy protection, and data update, and assume that the data so...
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IPC IPC(8): H04L29/06H04L9/32
Inventor 万长胜刘军
Owner SOUTHEAST UNIV