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Identity-based encryption system for secure data distribution

  • US 8,024,769 B2
  • Filed: 12/09/2005
  • Issued: 09/20/2011
  • Est. Priority Date: 02/05/2003
  • Status: Expired due to Fees
First Claim
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1. A method for distributing data structures to users over a communications network, the method comprising:

  • at a data packaging service, receiving a plurality of data structures having different associated data types and associated attributes;

    at the data packaging service, using information on which data type is associated with each data structure to select some of the attributes associated with that data structure;

    at the data packaging service, using the selected attributes for each data structure in forming a policy-based public key for that data structure;

    at the data packaging service, using an identity-based encryption engine to encrypt each data structure based on identity-based-encryption public parameter information and the public key for that data structure; and

    at the data packaging service, distributing each encrypted data structure to a plurality of users over the communications network, wherein each data structure has associated data type encryption policy information and wherein using information on which data type is associated with each data structure to select the attributes comprises using the data type encryption policy information to select the attributes.

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