Forgery Attacks on Time-Stamp, Signed PDF and X.509 Certificate

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@article{Itoh2009ForgeryAO, title={Forgery Attacks on Time-Stamp, Signed PDF and X.509 Certificate}, author={Kouichi Itoh and Tetsuya Izu and Wakaha Ogata and Takeshi Shimoyama and Masahiko Takenaka}, journal={IEICE Transactions}, year={2009}, volume={92-A}, pages={67-75} }