Digital signature/certificate for hard-copy documents
OwnerDennis DeYoung, Robert Sperryinventors
Life of this patent
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Abstract
A hard-copy authentication document is a physical manifestation of a digital signature or a physical manifestation of a public key affixed to a hard-copy document or physical object, respectively. A method of authentication and non-repudiation of hard-copy documents includes affixing a physical manifestation of a digital signature to a hard-copy document. The physical manifestation of a digital signature is converted to an electronic digital signature, which is compared to a public key to authenticate the hard-copy document.
Claims24
A hard-copy authentication document comprises a physical manifestation of at least one of a digital signature or a public key, the physical manifestation being affixed to a physical object.
A method of authentication and non-repudiation of hard-copy documents comprising:
- affixing a physical manifestation of a digital signature to a hard-copy document;
- converting the physical manifestation of a digital signature to an electronic digital signature;
- and
- validating the electronic digital signature with a public key to authenticate the hard-copy document.
A method of authentication and non-repudiation of documents comprising:
- affixing a physical manifestation of a public key or a physical manifestation of a digital certificate to a physical object to produce a hard-copy digital certificate;
- distributing the hard-copy digital certificate to a recipient of the document;
- converting the physical manifestation of a public key or the physical manifestation of a digital certificate to an electronic public key or an electronic digital certificate, respectively;
- and
- authenticating a digital signature with the electronic public key or the electronic digital certificate.
Dependencies are inferred from the claim text.