title: WSO2 API Manager, what is Authorization: Basic <long hex value>?
body: <p>I am new to <code>WSO2 API Manager</code> <code>(APIM)</code> using version <code>1.9.1</code>. I am referring to  link : <strong><a href="https://docs.wso2.com/display/AM170/Token+API" rel="nofollow">https://docs.wso2.com/display/AM170/Token+API</a></strong>, in this link they've given curl command</p>
  
  <pre><code>curl -k -d "grant_type=password&amp;username=&lt;username&gt;&amp;password=
  &lt;password&gt;&amp;scope=&lt;scope1&gt; &lt;scope2&gt;" -H "Authorization: Basic 
  SVpzSWk2SERiQjVlOFZLZFpBblVpX2ZaM2Y4YTpHbTBiSjZvV1Y4ZkM1T1FMTGxDNmpzbEFDVzhh, 
  Content-Type: application/x-www-form-urlencoded" https://localhost:8243/token
  </code></pre>
  
  <p>Now I am trying to understand above <code>curl</code> command in order to create <code>Junit</code> to map all these <code>headers</code> and <code>body</code> values to my Spring <code>RestTemplate</code> API's. I understand all parameters, but I don't understand below</p>
  
  <pre><code>Authorization: Basic 
      SVpzSWk2SERiQjVlOFZLZFpBblVpX2ZaM2Y4YTpHbTBiSjZvV1Y4ZkM1T1FMTGxDNmpzbEFDVzhh
  </code></pre>
  
  <p>Could you please explain what is the use of it? What we called long hex string by name?</p>