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Cloud Storage Data Encryption Method, Apparatus and System

  • US 20120134491A1
  • Filed: 12/22/2010
  • Published: 05/31/2012
  • Est. Priority Date: 11/29/2010
  • Status: Abandoned Application
First Claim
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1. A cloud storage data encryption method comprising:

  • according to the amount of data X expected to be stored into a cloud storage data center within a determined period of time, the proportion of local storage space to occupy R and the level of data security Z, calculating the size H of a random seed that should be generated;

    according to the amount Y of plaintext data to be encrypted every time, calculating the data acquisition times u from the random seed;

    generating and storing the random seed with the size of H according a preset method;

    acquiring data for several times from the random seed, and cascading the data acquired each time into a random string of no shorter than the length of a plaintext;

    according to the random string, generating a plaintext encryption bit identifier random string;

    according to the plaintext encryption bit identifier random string, selecting more than one half of plaintext data for encryption; and

    according to their positions in the plaintext, arranging the encrypted data and unencrypted data to form a ciphertext.

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