title: Decrypt Skype Private Message
body: <p>Skype supports private message. It looks like its private message is encrypted using Signal Protocol.</p>
  <p>I have this sample of Skype private message and need to decrypt the &quot;content&quot;.</p>
  <pre><code> &quot;clientmessageid&quot;: &quot;10507111498039774744&quot;,
          &quot;messagetype&quot;: &quot;EndToEndEncryption/EncryptedText&quot;,
          &quot;originalarrivaltime&quot;: &quot;2020-01-27T05:53:17.571Z&quot;,
          &quot;encryptedkey&quot;: {
              &quot;d79ee36f-a499-49b7-ac9d-6091362e141a&quot;: &quot;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&quot;
          },
          &quot;version&quot;: &quot;1580104398186&quot;,
          &quot;fromdeviceid&quot;: &quot;aee59f97-e1e9-4561-af80-4a0b4c6f2156&quot;,
          &quot;from&quot;: &quot;https://azwcus1-client-s.gateway.messenger.live.com/v1/users/ME/contacts/8:prakash.tandukar&quot;,
          &quot;id&quot;: &quot;1580104398186&quot;,
          &quot;conversationLink&quot;: &quot;https://azwcus1-client-s.gateway.messenger.live.com/v1/users/ME/conversations/19:cd600a6ac9fd0fc43098250d506519ea3fae996a9ab5ed32b81734696b6e8325@encrypted.skype&quot;,
          &quot;type&quot;: &quot;Message&quot;,
          &quot;conversationid&quot;: &quot;19:cd600a6ac9fd0fc43098250d506519ea3fae996a9ab5ed32b81734696b6e8325@encrypted.skype&quot;,
          &quot;content&quot;: &quot;UVpLGf93DMdW5sNpO+XnHp7xHpq5LtgZM/TcvxE9nT8M7ElyNiOVQWGB933cw/Cn&quot;,
          &quot;composetime&quot;: &quot;2020-01-27T05:53:17.571Z&quot;
  </code></pre>
  <p>The content is encrypted. There is also encryptedkey. I have been looking signal-protocol-pcl package for decyrpting content in c# but have not able to decrypt the content.</p>