2 posts tagged with "security"

iLoveAPI and PDFCanon turn up in the same developer search, but they solve different problems.

iLoveAPI is a utility toolkit: merge, split, compress, convert, and manipulate documents.

PDFCanon is an integrity layer: normalize untrusted PDFs, remove structural drift, produce a stable SHA-256, and return an audit report.

I spent a long time figuring out why sha256sum invoice.pdf returns a different hash every time my accounting software re-exports "the same" document.

Turns out this is a fundamental property of the PDF format - and it quietly breaks a number of real-world systems that depend on stable file hashes: deduplication, audit trails, content-addressed storage, integrity verification.