Function generateDpopKeyPair

generateDpopKeyPair(): Promise<DpopKeyPair>
Generates a new ES256 key pair for DPoP (Demonstrating Proof-of-Possession) operations.

This function creates a cryptographically secure ES256 key pair suitable for DPoP proof generation. The generated keys use the P-256 elliptic curve with SHA-256 hashing, which is the required algorithm for DPoP as specified in RFC 9449.

Returns Promise<DpopKeyPair>
Promise that resolves to a DpopKeyPair containing the private and public keys
Example
```
import { generateDpopKeyPair } from "@auth0/nextjs-auth0/server";

const keyPair = await generateDpopKeyPair();

const auth0 = new Auth0Client({
  useDPoP: true,
  dpopKeyPair: keyPair
});
```
See
RFC 9449: OAuth 2.0 Demonstrating Proof-of-Possession at the Application Layer (DPoP)
- Defined in src/utils/dpopRetry.ts:36