Secure Signatures
First Claim
Patent Images
1. A computing device comprising:
- a processor; and
a memory coupled to the processor, the memory comprising computer-program instructions executable by the processor, the computer-program instructions when executed by the processor for performing operations comprising;
receiving an electronic signature; and
generating a secure signature that securely binds the electronic signature to content of a printed page, the binding being such that a cryptographic-based verification operation can programmatically verify that an author of the electronic signature expressed a willingness to be bound to the content of the printed page.
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Accused Products
Abstract
Systems and methods for secure signatures are described. In one aspect, a secure signature is generated. The secure signature strongly binds an image of an electronic signature (an “electronic signature”) to content in either electronic or printed form. Responsive to receiving a request from a user, the systems and methods determine whether an electronic signature associated with a printed page represents a secure signature. If so, the systems and methods determine and notify the user of whether the secure signature was cryptographically bound by a signer of the electronic signature to the content being signed.
22 Citations
20 Claims
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1. A computing device comprising:
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a processor; and a memory coupled to the processor, the memory comprising computer-program instructions executable by the processor, the computer-program instructions when executed by the processor for performing operations comprising; receiving an electronic signature; and generating a secure signature that securely binds the electronic signature to content of a printed page, the binding being such that a cryptographic-based verification operation can programmatically verify that an author of the electronic signature expressed a willingness to be bound to the content of the printed page. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A tangible computer-readable data storage medium comprising computer-program instructions executable by a processor, the computer-program instructions when executed by the processor for performing operations comprising:
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cryptographically tying a person'"'"'s electronic signature to content of a document by; digitally signing content of the document and the electronic signature to create a digital signature; embedding the digital signature into bits associated with the electronic signature to generate a secure signature; distributing the document comprising the secure signature to end-users for viewing and authentication. - View Dependent Claims (10, 11, 12)
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13. A computer-implemented method comprising:
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receiving a request from a user to verify that an electronic signature associated with a document is cryptographically bound by a signer of the electronic signature to content of the document; evaluating bits of the electronic signature to determine whether the bits represent an embedded digital signature; if the bits do not represent the embedded digital signature, notifying the user that the electronic signature is not cryptographically bound to content of the document; and if the bits do represent the embedded digital signature, verifying whether the electronic signature was cryptographically bound by the signer to the content. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification