Protecting the integrity of electronically derivative works

Protecting the integrity of electronically derivative works

  • CN 101,449,508 A
  • Filed: 03/14/2007
  • Published: 06/03/2009
  • Est. Priority Date: 03/14/2006
  • Status: Active Application
First Claim
Patent Images

1. method comprises:

  • Create second document, described second document obtains from first document derivations may;

    Determine first eap-message digest of described first document;

    Calculate second eap-message digest of described second document;

    AndCreate the digital signature of described second document, described digital signature comprises described first eap-message digest and described second eap-message digest.

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