title: How to decrypt sha1 encrypted string C#
body: <p>I've encrypted a string(hello) using SHA1 using below code. Please guide me to decrypt this string.</p>
  
  <pre><code>SHA1Managed sha1 = new SHA1Managed();
  byte[] hash = sha1.ComputeHash(Encoding.UTF8.GetBytes("hello"));
  StringBuilder sb = new StringBuilder(hash.Length * 2);
  foreach( byte b in hash)
  {
      sb.Append(b.ToString("x2"));
  }
  string result = sb.ToString();
  </code></pre>
  
  <p>While searching in internet, I didn't find decryption using SHA1, even in MSDN. Kindly guide me.</p>