Validating access token with at_hash : <p>I'm trying to validate access tokens against at_hash. Token header is like this</p>

<p><code>{
  "typ": "JWT",
  "alg": "RS256",
  "x5t": "MclQ7Vmu-1e5_rvdSfBShLe82eY",
  "kid": "MclQ7Vmu-1e5_rvdSfBShLe82eY"
}</code></p>

<p>How do I get from my access token to the Base64 encoded at_hash claim value that is in the id token? Is there an online tool that could help me with this? Is SHA256 hash calculator not a correct tool for this?</p>

<p>Thanks</p>
