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SECURE CLOUD DATA SHARING

  • US 20140281520A1
  • Filed: 03/11/2014
  • Published: 09/18/2014
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. A method for sharing an encrypted file stored in a cloud server, the method comprising:

  • generating a file key associated with the encrypted file stored in the cloud server;

    encrypting the file key using a symmetric key to generate a share key;

    storing the share key in the cloud server;

    retrieving the encrypted file and the share key from the cloud server;

    decrypting the share key using the symmetric key to reconstruct the file key; and

    using the reconstructed file key to decrypt the encrypted file.

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