CoreOS has released one: <a href="https:&#x2F;&#x2F;github.com&#x2F;coreos&#x2F;go-oidc" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;coreos&#x2F;go-oidc</a><p>We&#x27;re currently using it in our own OAuth&#x2F;OIDC identity provider.