title: Store Private Key into Azure KeyVault, value got changed
body: <p>I tried to store my private key to Azure Key Vault, but when I retrieve it out, my private key got changed. </p>
  
  <p>If I put the private key into my web.config file, it works without any issue.</p>
  
  <pre><code>-----BEGIN RSA PRIVATE KEY-----
  MIIEowIBAAKCAQEAohoZ+TCXMn17BPFXFCuIHvh7oONSBNCjuixl2CbwrGO8tIAO
  XIQP1sZa3lhXkUj0f4HewmYsx6JR+39Do21H+QtCZxR4qCvOJxrrFHqMrk76aQji
  ....
  ZVmUljOatig+g+q+jMEf7IA5zcAgBdAAuausXrPoNcip89Yuqag1
  -----END RSA PRIVATE KEY-----
  </code></pre>
  
  <p>Since my private key is just a text, I stored it as a Secrets. Am I doing the right thing? </p>
  
  <p>I also tried to store the key as a Certificate, but the key is just a text with hidden CRLN, it is not PEM or PKCS#12. And in my case, I don't need to store the public key.</p>
  
  <p>Below is my code to retrieve the key:</p>
  
  <pre><code>public static string GetDocuSignPrivateKey()
  {
      var key = keyVaultClient.GetSecretAsync($"{vaultUrl}secrets/DocuSignPrivateKey/88e15b41234bf89619ddc9a2exxxx").Result;
  
      return key.Value;
  }
  </code></pre>
  
  <p>Sorry, I just start using Azure KeyVault.  Please help.  Thank you.</p>