Data anti-leakage protection method for cloud storage environment

A cloud storage and anti-leakage technology, applied in the field of information security, can solve problems such as unsatisfactory data leakage protection, retention, complex calculation process, etc.

Active Publication Date: 2016-01-20
WUHAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

However, this type of method is still at the stage of theoretical exploration. The calculation process is very

Method used

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  • Data anti-leakage protection method for cloud storage environment
  • Data anti-leakage protection method for cloud storage environment
  • Data anti-leakage protection method for cloud storage environment

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Embodiment Construction

[0066] The present invention will be further described in detail below in conjunction with examples, but these examples should not be construed as limiting the present invention.

[0067] In step 2), select the security parameter λ shown below and the group generator g to be paired p , g r , Y and the parameters a, a′, g in the master key 2 , used to generate the public key PK L and master key MK:

[0068] λ=2 160

[0069] g p =[7809132837767772651573398790375403753462635003623019020044719272892058114280169545363627979672267814658276323812421368981173841647068218684446465465855241,7406643807957608305790166986115601778083675130710226906362591601230255575641360818656017098156052158125464120405691949210352493932149295057446052059530714]

[0070] g r =[4927806246087013323176344129922077121049761463643223330379875014379649792357196308368218031913996561191471542282649512239400384858148590491435071205008076,3959556302535778130756496571193265082800275622456294723604146789658349454

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Abstract

The invention relates to a data anti-leakage protection method for a cloud storage environment. The method comprises the following steps of setting system symbols and parameters; performing system initialization; sending a user attribute list L to an authorization mechanism TA and requesting generation of an attribute secret key by a user; after the authorization mechanism TA receives the user attribute list L, generating a private key SKL of the user; performing data encryption; performing keyword encryption; generating a trap door; performing server search; and performing data decryption. Compared with the prior art, the method can directly search encrypted information stored in a cloud storage server effectively in a non-trusted environment, ensures safety of data and privacy of the user, and can support search access control of different user fine grits. The method provides reliable guaranteed for data safety in the cloud storage environment and has a good application prospect.

Description

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Claims

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Application Information

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Owner WUHAN UNIV OF TECH
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