user inputs name and presses 'register'

normally, js would 'ping' the server with the username, and receive a challenge. ( also verifying that the username is available ) however, i'm hardcoding the challenge in this proof-of-concept. 01234567-89ab-cdef-0123-456789abcdef

	// webauthn.io
	// webauthn.guide

	// https://developer.mozilla.org/en-US/docs/Web/API/Crypto/getRandomValues
	// https://developer.mozilla.org/en-US/docs/Web/API/Crypto
	var u8a = new Uint8Array( 16 );
	crypto.getRandomValues( u8a );
	console.log( u8a );

	var challenge = [
		98, 47, 153, 237,
		143, 250, 156, 209,
		26, 151, 122, 91,
		66, 48, 3, 11,
	];

	////

	var assertionRequest = await navigator.credentials.create( {
		
	} );

	navigator.credentials.create({
		publicKey: {
			rp: {
				id: 'dirtand.rocks',
				name: 'dirt and rocks',
			}
			user: {
				// id: 327, // what is this for...
				name:
				displayName:
			}
			challenge: challenge,
			pubKeyCredParams: [
				{
					type: 'public-key',
					alg: -7,
				},
				// {
				// 	type: 'public-key',
				// 	alg:
				// },
			]
			timeout:
			excludeCredentials: [
				{
					type: 'public-key',
					id:
					transports: [ USB NFC BLE INTERNAL
					]
				}
			]
			authenticatorSelection: {
				authenticatorAttachment:
				residentKey:
				requireResidentKey
				userVerification:
			}
			attestation:
		}
		extensions: {
			credProps
			credentialProtectionPolicy:
			enforceCredentialProtectionPolicy
			minPinLength
			uvm
		}
	});

	

(phase-0)

todo: finish copying from webauthn.guide ...

(phase-1)