title: The term 'xxd' is not recognized as the name of a cmdlet, function
body: <p>I am trying to create a hash key for my Android APP (SMS retriever API ), i follow this link </p>
  
  <p><a href="https://medium.com/@rodrigohsb/automatic-sms-authentication-without-asking-permission-sms-retriever-api-47eb5026b9a3" rel="nofollow noreferrer">https://medium.com/@rodrigohsb/automatic-sms-authentication-without-asking-permission-sms-retriever-api-47eb5026b9a3</a></p>
  
  <p>but while running key tool command i am getting following error :</p>
  
  <blockquote>
    <p>xxd : The term 'xxd' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
    spelling of the name, or if a path was included, verify that the path is correct and try again.
    At line:1 char:57"</p>
  </blockquote>