Java Tech Enthusiast
Feb 14, 2025 · Information Security
Electronic Signature Implementation Using Java and PDF
This tutorial explains China’s electronic‑seal regulations, shows how to generate a CA‑based X.509 certificate and a custom seal image with BouncyCastle, and demonstrates signing a PDF in Java using iText 5 to embed a visible seal and a verifiable digital signature.
BouncyCastleDigital CertificateJava
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