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Verification method, equipment and system of increment provable data integrity (IPDI)

A data and equipment technology, applied in the field of incremental provable data integrity verification, can solve problems such as unsatisfactory, unsafe data segments entering files, etc.

Inactive Publication Date: 2010-06-09
NEC (CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, once data files have been preprocessed (e.g., generated fingerprints for the PDI scheme) and outsourced, that is, the keys used for data preprocessing are disclosed to third-party verifiers, then the PDI scheme allows new It is not safe for the data segment to enter the file
[0023] Noting that existing technology does not yet satisfy all seven requirements (I) to (VII)

Method used

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  • Verification method, equipment and system of increment provable data integrity (IPDI)
  • Verification method, equipment and system of increment provable data integrity (IPDI)
  • Verification method, equipment and system of increment provable data integrity (IPDI)

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Embodiment Construction

[0056] In the following, the present invention will be described with reference to the accompanying drawings. In the following description, some specific embodiments are only for the purpose of description, and should not be construed as limiting the present invention, but are only examples of the present invention. Conventional structures or constructions are omitted so as not to obscure the understanding of the present invention.

[0057] Principle Description

[0058] The Incremental Provable Data Integrity (IPDI) scheme proposed here not only overcomes all the problems encountered in the prior art, but also outperforms various existing technologies in terms of performance.

[0059] The IPDI scheme basically has the following three steps, which is the same as figure 1 The working model shown matches.

[0060] Step 0':

[0061] The IPDI scheme requires a finite cyclic group Preferably, is a finite cyclic group on elliptic curves. In the present disclosure, the con...

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Abstract

The invention provides a verification method of increment provable data integrity (IPDI), which comprises the following steps: firstly, generating digital fingerprints of data at a client, and sending the fingerprints and the data together to an archive server; when necessary, sending an 'inquiry' to the archive server by the client or a third party verifier to determine the integrity of the data, and proving the integrity of the data through the archive server by using the received fingerprints; and finally, verifying the integrity of the data by the client or the third party verifier according to the output for responding to the 'inquiry' from the archive server. In addition, the IPDI scheme securely realizes the purpose of adding incremental data into a data file which already generates fingerprints and is outsourced.

Description

technical field [0001] The invention relates to the field of storage network security, in particular to an incremental provable data integrity (IPDI) verification method, device and system. Background technique [0002] The Internet is developing rapidly from personal local storage to outsourced data storage services on a global scale. Amazon Simple Storage Service (Amazon S3) (Reference 1: Amazon Simple Storage Service (Amazon S3), http: / / aws.amazon.com / s3) is one such Internet storage system. Amazon S3 provides a web service interface that can be used to store and retrieve data. Amazon S3's service is of global scale and business class, and its price is very reasonable: US$0.15GB / month for the amount of storage used; US$0.10GB / month for all incoming data; for the first 10TB / month of data Outgoing, US$0.18GB / month. For those looking for free global-scale storage services, there are also the following services. MediaMax (Reference 2: MediaMax Free Online Storage, http: / / ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/30H04L9/08
Inventor 曾珂雷浩
Owner NEC (CHINA) CO LTD
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