static JsonWebKey CreateJWKey(
RSAParameters publicKey,
string algorithm,
string keyId = null,
string keyType = "RSA") => new JsonWebKey
{
KeyType = keyType,
Algorithm = algorithm,
PublicKeyUse = KeyUse.Signature,
Exponent = publicKey.Exponent.ToBase64UrlSafe(),
Modulus = publicKey.Modulus.ToBase64UrlSafe(),
KeyId = keyId ?? publicKey.KeyId()
};