title: Why hash code values are different for different tools?
body: <p>I have created Hash code of an <code>.iso</code> file using <code>fciv.exe</code>. I have used MD5 and SHA1 algorithm. Then I found <code>Get-filehash -Path "c:\MyProject.iso" -Algorithm Sha1</code> cmdlet in PowerShell, as it is very easy I used that.</p>
  
  <p>But both the tools created different hash code. Hash algorithms should be unique across all the tools. At least that's what my understanding is - am I right? Or it is an expected behavior?</p>
  
  <p>Update:
  I have taken a sample file and created hash value for that using fciv.exe and also using Powershell.</p>
  
  <p>Fciv.exe created following Sha1</p>
  
  <pre><code>6d9Rar2xh+B5/eEE96pO15EDji0=
  </code></pre>
  
  <p>Powershell created following Sha1</p>
  
  <pre><code>E9DF516ABDB187E079FDE104F7AA4ED791038E2D
  </code></pre>