Open AccessEvading Signature Validation in Digitally Signed PDF
Author(s) -
Ramesh Cheripelli,
Swathi Ch
Publication year - 2021
Publication title -
engineering and scientific international journal
Language(s) - English
Resource type - Journals
eISSN - 2394-7187
pISSN - 2394-7179
DOI - 10.30726/esij/v8.i3.2021.83017
Subject(s) - trustworthiness , rounding , signature (topology) , digital signature , adaptability , electronic signature , computer science , computer security , internet privacy , mathematics , economics , management , operating system , hash function , geometry , process (computing)
Carefully marked Portable Document Formats (PDFs) are utilized in agreements, contracts, bills, proposals, and arrangements to ensure the genuineness and trustworthiness of their material. A normal client would accept that carefully marked PDF records are conclusive and cannot be additionally altered. Be that as it may, different changes like adding comments to a marked PDF or rounding out structure fields are permitted and do not nullify PDF marks. In this paper, we show that this adaptability permits attackers to totally change a record’s substance while keeping the first signature approval status immaculate.