Patent ID: 7877365

Claim:
A computer-implemented document integrity verification method comprising: receiving a digital document in a word processing format into a computer readable medium; generating a first baseline data sequence from the digital document; generating a first modified baseline data sequence from the first baseline data sequence in accordance with a set of modification rules, wherein at least one element of the first baseline data sequence, between the first and final elements of the first baseline data sequence, is modified in the first modified baseline data sequence, and wherein an integrity verification code (IVC) generated for the first modified baseline data sequence will differ from an IVC generated for the first baseline data sequence; generating a first original IVC, wherein generating a first original IVC comprises performing a one-way operation on the first modified baseline data sequence, and wherein the modification rules render tampering undetectable for the at least one modified element within the first baseline data sequence; publishing the digital document with at least a portion of the first original IVC rendered on a face of the published document.