Patent
Method and apparatus for adding signature information to electronic documents
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TLDR
In this paper, the signature information is added to a signature data field template corresponding to the electronic document, converted to an image file, and superimposing the image file over the electronic documents to produce a signed electronic document.Abstract:
In one embodiment, the present invention is a method and apparatus for adding signature information to electronic documents. One embodiment of the inventive method involves adding the signature information into a signature data field template corresponding to the electronic document, converting the signature data field template, including the added signature information, to an image file, and superimposing the image file over the electronic document to produce a signed electronic document. The inventive method substantially eliminates the potential for human error and security breaches in the signing of electronic documents.read more
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References
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Proceedings ArticleDOI
Copyright protection of images using robust digital signatures
Nikos Nikolaidis,Ioannis Pitas +1 more
TL;DR: A method for copyright protection of digital images is presented by embedding an "invisible" signal, known as digital signature, in the digital image by minimizing the energy content of the signature signal in higher frequencies.
Patent
Electronic signature management system
Anthony E. Zank,David R. Stevens +1 more
TL;DR: An electronic signature management system as mentioned in this paper includes a graphic tablet digitizer for signaling position coordinates of a stylus being moved to produce a handwritten signature, a clock circuit of the digitizers defining a fixed interval between successive stylus position measurements, and a computer processor electrically interfaced with the tablet and programmed for receiving and storing a multiplicity of the coordinates in sequential order as an electronic signature forming a time history of the stylus movement.
Patent
Systems and methods for providing hardcopy secure documents and for validation of such documents
TL;DR: A secure document processing system for receiving an original document and for printing a secure hardcopy version of the original document, wherein the secure hard copy version includes a machine-readable encoded image signature which represents an image segment of a document as discussed by the authors.
Patent
Method for electronic transaction with digital signature
Kazuo Takaragi,Ryoichi Sasaki +1 more
TL;DR: In this paper, the authors propose a scheme to decode the signatures submitted by transacting parties as evidences by using a public key and checks as the basic of h(M) and the identifiers of the transacts parties whether the evidence data concern the same transaction or not.
Patent
Method and system for using electronic communications for an electronic contract
TL;DR: In this paper, a method and system for digitally signing an electronic contract document was proposed, where the signature was generated with a private key of an asymmetric key pair (247) and a verification status indicator corresponding to verification data input into the device.