electronic signature

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

0 likes · 16 min read

Electronic Signature Implementation Using Java and PDF

Rare Earth Juejin Tech Community

Nov 21, 2024 · Frontend Development

Implementing Electronic Signature, Image Merging, and Preview in Frontend using SignaturePad, html2canvas, and merge-images

This article explains how to build a front‑end electronic signature feature that merges a signature canvas with an HTML‑rendered document into a single preview image using SignaturePad, html2canvas, and merge-images, including code snippets and scaling adjustments.

canvaselectronic signaturefrontend

0 likes · 6 min read

Implementing Electronic Signature, Image Merging, and Preview in Frontend using SignaturePad, html2canvas, and merge-images