Patent ID: 9374227
Filing Date: 2016-06-21
CPC Classification: G06F,H04L

Claim Text:
1. A method of verifying signed digital documents, the method comprising: receiving a signed digital document, said signed digital document including an embedded digital signature, the embedded digital signature comprising a distinctive graphical outline and a plurality of line segments that lie along opposite sides of the embedded digital signature thereby allowing the embedded digital signature to be graphically distinguished from contents of the signed digital document, the embedded digital signature overlapping at least some contents of the signed digital document; generating an intermediate document, said intermediate document excluding the embedded digital signature; generating a validation output based on user authentication information identifying a signer of the signed digital document and the intermediate document, the validation output comprising a computed value representing the signed digital document before embedding of the embedded digital signature; and verifying whether the signed digital document was signed by the signer based on a comparison of the validation output to the embedded digital signature.