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US 2001/0034835 A1Published application
Applied digital and physical signatures over telecommunications media
OwnerRobert E. Smithinventor
Life of this patent
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Abstract
A Message Authentication Code (MAC), which may be used with Public Key Authentication, assures that the content elements have not been altered and that the issuer is who they say they are. This is accomplished by encrypting the documents hash count using the issuer's private key. The content element's receiving party can verify the MAC using the issuer's Public Key.
Claims4
A computer-readable medium storing instructions for computer-implementable method for providing document security, comprising:
- receiving an electronic document;
- creating a document profile based on the electronic document;
- creating a signer profile representing at least one aspect of a person to sign the electronic document;
- generating a watermark based on the created document profile and the created signer profile;
- and
- providing a modified document having the generated watermark secured to the electronic document.
3 more elements
Dependencies are inferred from the claim text.