Encryption and authentication systems and methods
First Claim
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1. A method comprising:
- receiving user authenticating information for applying a digital signature stamp of a user to contents of an electronic document;
receiving a selection of a region defined by the user, the region overlapping at least some contents of the electronic document for application of the digital signature stamp;
computing, by a computing system comprising computer hardware, a digital signature based on a user key and the contents of the electronic document, excluding the selected region from said computing; and
embedding within the contents of the electronic document, in the selected region, the digital signature stamp comprising a graphical display of digits corresponding to the computed digital signature.
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Abstract
Methods, apparatus, and systems are disclosed for, among other things, providing an electronic record (e.g., MICROSOFT WORD document, AUTOCAD drawing, etc.) that can be signed by “printing” that record to a special “virtual signature printer,” which provides the user with an intuitive, simple way of authenticating an electronic record. The “virtual signature printer” system can produce an output file (or multiple files) that can be sent to a recipient for viewing, printing, and validation. The recipient can view or print the file and, with special software, can validate the signature on the file.
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Citations
20 Claims
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1. A method comprising:
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receiving user authenticating information for applying a digital signature stamp of a user to contents of an electronic document; receiving a selection of a region defined by the user, the region overlapping at least some contents of the electronic document for application of the digital signature stamp; computing, by a computing system comprising computer hardware, a digital signature based on a user key and the contents of the electronic document, excluding the selected region from said computing; and embedding within the contents of the electronic document, in the selected region, the digital signature stamp comprising a graphical display of digits corresponding to the computed digital signature. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A computing system comprising:
a memory storing instructions configured for execution by the computing system in order to; receive user authenticating information for applying a digital signature stamp of the user to contents of an electronic document; receive a selection of a region, the region overlapping at least some contents of the electronic document for application of the digital signature stamp; compute a digital signature based on a user key and the contents of the electronic document, excluding the selected region from said computing; and embed within the contents of the electronic document, in the selected region, the digital signature stamp comprising a graphical display corresponding to the computed digital signature. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A non-transitory computer-readable medium encoded with instructions thereon, wherein the instructions are readable by a computing device in order to cause the computing device to perform operations comprising:
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receiving user authenticating information for applying a digital signature stamp of the user to contents of an electronic document; receiving a selection of a region, the region overlapping at least some contents of the electronic document for application of the digital signature stamp; computing a digital signature based on a user key and the contents of the electronic document, excluding the selected region from said computing; and embedding within the contents of the electronic document, in the selected region, the digital signature stamp comprising a graphical display corresponding to the computed digital signature. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification