title: How to obtain value of "x5t" using Certificate credentials for application authentication
body: <p>I was trying to obtain JWT token from Microsoft Azure Active Directory using <a href="https://docs.microsoft.com/en-us/azure/active-directory/develop/active-directory-certificate-credentials" rel="noreferrer">Certificate credentials for application authentication</a>.</p>
  
  <p>I am struck at figuring out the value of "x5t".</p>
  
  <p>I have tried with</p>
  
  <ul>
  <li>SHA-1 fingerprint value available in the public certificate.</li>
  <li>SHA-1 hash of the public certificate using FVIC.</li>
  </ul>
  
  <p>But i keep getting below error when send the request to MSA login endpoint</p>
  
  <pre><code>{
      "error": "invalid_client",
      "error_description": "AADSTS70002: Error validating credentials. AADSTS50012: Client assertion contains an invalid signature. [Reason - The key was not found., Thumbprint of key used by client: '6F67F76B96F6FBBDF9D3EE1DDF7F9A7B877EE9C75DEDBD3DE9C7FB', Configured keys: [Key0:Start=06/01/2018, End=12/31/2099, Thumbprint=6WGktXA64QmA9TPv;Key1:Start=06/01/2018, End=12/31/2099, Thumbprint=rD9Q10sR6Q6ZkDVw;]]\r\nTrace ID: d9e3e276-e878-4b8a-b08b-10c82a0b0600\r\nCorrelation ID: 48ec889d-2376-45a6-9bf0-01b22b0e0c17\r\nTimestamp: 2018-06-01 09:38:24Z",
      "error_codes": [
          70002,
          50012
      ],
      "timestamp": "2018-06-01 09:38:24Z",
      "trace_id": "d9e3e276-e878-4b8a-b08b-10c82a0b0600",
      "correlation_id": "48ec889d-2376-45a6-9bf0-01b22b0e0c17"
  }
  </code></pre>
  
  <p>How to obtain the value for "x5t" ?</p>