Desktop Software Integration

How desktop browsers invoke SecureSign Desktop Software on Windows, Linux, and macOS.

Flow

Desktop browsers use securesign:// deep link on all supported OSes

SecureSign Desktop Software

Windows: Download installer from Admin Console
Linux: sudo apt install securesign-desktop
macOS: brew install --cask securesign-desktop
Registers securesign:// so browsers can launch the software
Runs in the background; user connects DSC token via USB

Deep Link Handoff

Desktop browsers redirect to securesign://sign?requestId={uuid}&hashBase64={sha256}&hashAlgo=SHA256&documentType=hash&callbackUrl={encoded}&apiKey={ss_live_xxx} — identical to mobile. See Desktop Browser Flow and Deep Link Protocol.

JavaScript

const params = new URLSearchParams({
  requestId: crypto.randomUUID(),
  hashBase64: sha256Base64,
  hashAlgo: 'SHA256',
  documentType: 'hash',
  callbackUrl: 'https://portal.example.gov.in/sign/callback',
  apiKey: 'ss_live_abc123xyz'
});
window.location.href = `securesign://sign?${params}`;