@certnode/sdk-web (Browser)

ESM browser SDK for verifying CertNode receipts using WebCrypto (ES256 / P‑256).

Install

- Via npm (recommended): npm install @certnode/sdk-web
- Via CDN (after publish):
- ESM:
- UMD/global (compat): use web/js/verify.js from this repo and reference window.CertNode.verifyReceipt.
- Minified ESM (package dist): import sdk/web/dist/index.esm.min.js in your bundler if preferred

Usage (ESM)

``html

`

Notes

- Only ES256 (ECDSA P‑256) is supported.
- Uses RFC8785 JCS for canonicalization when payload_jcs_sha256 is present.
- No dependencies; requires a browser with WebCrypto support.
- Optional JWKS cache helper included as JWKSManager (TTL + ETag/Last‑Modified)
- A minified ESM bundle is generated at dist/index.esm.min.js for convenience

Types

- Type definitions included via index.d.ts.

License

MIT

CDN & SRI

If you prefer loading from a CDN, you can use jsDelivr and optionally add Subresource Integrity (SRI).

Compute SRI:

`
npm run build:web-sdk
node tools/generate-sri.js
`

Then include the script:

`html
type="module"
integrity="sha384-..."
crossorigin="anonymous"
src="https://cdn.jsdelivr.net/npm/@certnode/sdk-web@X.Y.Z/dist/index.esm.min.js">
``