keyToJwk function
Implementation
KeyToJwk keyToJwk(ByteBuffer keyBytes) {
final keyB64 = base64Encode(keyBytes.asUint8List());
final k =
keyB64.replaceAll('+', '-').replaceAll('/', '_').replaceAll('=', '');
return KeyToJwk.from(kty: 'oct', k: k, ext: false, alg: 'A256GCM');
}