Methods, apparatuses and methods for protecting and verifying data integrity

A technology of data integrity and integrity, applied in the direction of digital data protection, digital transmission system, transmission system, etc., can solve the problems of easy tampering of electronic data, errors or loss in the process of transmission or storage

Inactive Publication Date: 2012-05-09
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Compared with paper media, electronic data (such as images, texts, audio, video, etc.) are easily tampered with, and are also prone to errors or loss during transmission or storage

Method used

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  • Methods, apparatuses and methods for protecting and verifying data integrity
  • Methods, apparatuses and methods for protecting and verifying data integrity
  • Methods, apparatuses and methods for protecting and verifying data integrity

Examples

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Embodiment Construction

[0030] Embodiments of the present disclosure are described below with reference to the drawings. Elements and features described in one drawing or one embodiment of the present disclosure may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that representation and description of components and processes that are not relevant to the present disclosure and known to those of ordinary skill in the art are omitted from the drawings and descriptions for the purpose of clarity.

[0031] Embodiments of the present disclosure provide methods, devices and systems for protecting and verifying the integrity of electronic data. The "data" mentioned in the embodiments or technical solutions of the present disclosure refers to electronic data, and the data can be electronic data in any form such as images, texts, videos, audios or any combination thereof. Not limited.

[0032] figure 1 is a schematic flowchart illustrating a met...

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PUM

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Abstract

The invention provides methods, apparatuses and methods for protecting and verifying data integrity. A method for protecting data integrity comprises the following steps of: dividing data into a plurality of data blocks; calculating the hash value of each data block by means of a first hash function, thereby obtaining a plurality of block hash values and forming a first hash chain; calculating a second hash chain by means of a second hash function according to the first hash chain, wherein the second hash chain comprises a plurality of chain hash values; each chain hash value is associated with the corresponding block hash value in the first hash chain, and associated with the adjacent chain hash value in the second hash chain, and wherein the first hash chain and the second hash chain serve as the integrity information of the data; and generating the verification information of the data by means of the last chain hash value in the second hash chain.

Description

technical field [0001] The present disclosure relates to the integrity protection of electronic data, and in particular, to a method, device and system for protecting and verifying the integrity of electronic data. Background technique [0002] Compared with paper media, electronic data (such as images, texts, audio, video, etc.) are easily tampered with, and are also prone to errors or loss during transmission or storage. In many applications, users need to check the integrity of electronic data to confirm that the data has not been tampered with or has not been inaccurate or lost. For example, with the promulgation of laws and regulations such as the Electronic Signature Law, electronic data can be used as evidence in court just like paper media. Therefore, ensuring the integrity of electronic data is becoming an increasingly important requirement. Contents of the invention [0003] A brief overview of some aspects of the disclosure is given below in order to provide a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/00
CPCH04L2209/38H04L2463/121H04L63/123H04L9/3236H04L9/3297G06F21/645G06F21/64G06F2221/2153H04L9/50
Inventor 李基
Owner SONY CORP
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