TOS DSC Bridge

Secure DSC bridge by TOS for eSign workflows, authentication, and document signing with Digital Signature Certificates.

🛡️ TOS DSC Bridge — Digital Signature Certificate Integration for the Web TOS DSC Bridge is a secure, ultra-lightweight Chrome extension built by Totally Optimised Solutions that seamlessly connects your browser to your local DSC hardware token — enabling fast, reliable eSign workflows from any integrated web portal. 🔐 What It Does TOS DSC Bridge acts as a secure local bridge between your browser and your USB DSC token (eToken / Smart Card). Websites powered by TOS systems can instantly request document signing, identity authentication, and cryptographic verification — all without leaving your browser tab. ⚡ Key Features ✅ One-click document signing using your DSC hardware token ✅ Auto-detects certificates — reads subject, issuer, serial & validity ✅ Cryptographic signature verification built in ✅ Dynamic bridge URL — configure your local endpoint right from the popup ✅ Real-time connection status with live health monitoring ✅ Your private key never leaves your device — ever ✅ Zero background resource usage when idle ✅ Works with eToken, Smart Card, and USB DSC dongles 👥 Who Is It For? 👨‍💼 CA firms & legal professionals handling signed documents 🏛️ Government portal users — MCA, GST, Income Tax, eTender 🏢 Enterprises using TOS-integrated eSign platforms 👨‍💻 Developers building DSC-based authentication systems 📋 Anyone required to digitally sign documents online ⚙️ How It Works 1️⃣ Install the TOS DSC Bridge desktop app from tos.systems 2️⃣ Plug in your DSC USB token 3️⃣ Open any TOS-integrated web portal 4️⃣ Sign, authenticate & verify — instantly, securely, locally 🔒 Privacy & Security 🔐 All cryptographic operations run 100% locally 🚫 No data is ever sent to external servers 🔑 Your PIN and private key never leave your machine 🖥️ Communicates only between your browser and localhost 📋 No tracking, no analytics, no ads — ever 📦 About Totally Optimised Solutions We build secure, developer-first tools for digital workflows across India's government and enterprise ecosystems. TOS DSC Bridge is trusted by thousands of professionals for reliable, hardware-backed digital signing. © 2025 Totally Optimised Solutions. All rights reserved. Unauthorized reproduction or redistribution of this software is strictly prohibited.