# Function: EmbeddedJWK()

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▸ **EmbeddedJWK**(`protectedHeader?`, `token?`): [`Promise`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)\<[`CryptoKey`](https://developer.mozilla.org/docs/Web/API/CryptoKey)\>

EmbeddedJWK is an implementation of a [GetKeyFunction](../../../types/interfaces/GetKeyFunction.md) intended to be
used with the JWS/JWT verify operations whenever you need to opt-in to verify signatures with a
public key embedded in the token's "jwk" (JSON Web Key) Header Parameter. It is recommended to
combine this with the verify function's `algorithms` option to define accepted JWS "alg"
(Algorithm) Header Parameter values.

This function is exported (as a named export) from the main `'jose'` module entry point as well
as from its subpath export `'jose/jwk/embedded'`.

## Parameters

| Parameter | Type | Description |
| ------ | ------ | ------ |
| `protectedHeader?` | [`JWSHeaderParameters`](../../../types/interfaces/JWSHeaderParameters.md) | JWS Protected Header. |
| `token?` | [`FlattenedJWSInput`](../../../types/interfaces/FlattenedJWSInput.md) | The consumed JWS token. |

## Returns

[`Promise`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)\<[`CryptoKey`](https://developer.mozilla.org/docs/Web/API/CryptoKey)\>

The public key from the JWS "jwk" (JSON Web Key) Header Parameter.

## Example

```js
const jwt =
  'eyJqd2siOnsiY3J2IjoiUC0yNTYiLCJ4IjoiVU05ZzVuS25aWFlvdldBbE03NmNMejl2VG96UmpfX0NIVV9kT2wtZ09vRSIsInkiOiJkczhhZVF3MWwyY0RDQTdiQ2tPTnZ3REtwWEFidFhqdnFDbGVZSDhXc19VIiwia3R5IjoiRUMifSwiYWxnIjoiRVMyNTYifQ.eyJpc3MiOiJ1cm46ZXhhbXBsZTppc3N1ZXIiLCJhdWQiOiJ1cm46ZXhhbXBsZTphdWRpZW5jZSIsImlhdCI6MTYwNDU4MDc5NH0.60boak3_dErnW47ZPty1C0nrjeVq86EN_eK0GOq6K8w2OA0thKoBxFK4j-NuU9yZ_A9UKGxPT_G87DladBaV9g'

const { payload, protectedHeader } = await jose.jwtVerify(jwt, jose.EmbeddedJWK, {
  issuer: 'urn:example:issuer',
  audience: 'urn:example:audience',
})

console.log(protectedHeader)
console.log(payload)
```
