"How?" Miller asked, exhausted. "How did you know how to handle the streams, the dictionaries, the compression?"
"Watch closely," Elias said, his voice dropping to a whisper. "Most developers treat a PDF like a picture. They try to swallow the ocean in one gulp. That is the way of the amateur."
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He pulled up the keystore.
It was smaller than the original. It was cryptographically signed. It contained the metadata of the merger.
"A PdfCanvas signature is just paint," Elias lectured as he typed furiously. "It’s ink on paper. It proves nothing. We need a PdfPKCS7 container. We need to freeze the document in time." They try to swallow the ocean in one gulp
"That object wasn't in the cross-reference table," Elias muttered. "It’s hidden. A ghost link."