Patent ID: 8694473
Filing Date: 2014-04-08
Classification: G06F,G07D,H04N,Y10S

Abstract:
1. A computer-implemented document integrity verification method comprising: receiving a digital document in a word processing format into a non-transitory computer readable medium; generating a baseline data sequence from the digital document, the baseline data sequence having a first printable element and a second printable element following the first printable element of the baseline data sequence; generating a modified data sequence from the baseline data sequence in accordance with a set of modification rules, the modified data sequence having a first printable element and a second printable element following the first printable element of the modified data sequence, generating a first original IVC, wherein generating a first original IVC comprises performing a one-way operation on the modified data sequence, and wherein the modification rules render tampering of the digital document undetectable for the at least one unprintable element within the baseline data sequence; and transmitting the first original IVC across a public computer network to a remote database node.