title: Intellij IDEA License Activation (SSLHandshakeException)
body: <p>I'm trying to active Intellij IDEA (14) with my educational license under Ubuntu-gnome (15.4) getting an SSLHandshakeException:</p>
  
  <blockquote>
    <p>JetProfile connection error: SSLHandshakeException: java.security.cert.CertificateException: java.security.SignatureException: Signature length not correct: got 256 but was expecting 512</p>
  </blockquote>
  
  <p>Then it says "Intellij was not able to detect your proxy configuration", although I do not have a proxy and my network settings are configured to have no proxy. The support there told me to check my direct connection to <strike><a href="https://lservice-auth.jetbrains.com/" rel="nofollow noreferrer">https://lservice-auth.jetbrains.com/</a></strike>(<a href="https://account.jetbrains.com/lservice/" rel="nofollow noreferrer">https://account.jetbrains.com/lservice/</a>). Chrome says this connection isn't safe (I've switched my distro and successfully activated Intellij, Chrome still has trust issues with that link):</p>
  
  <blockquote>
    <p>NET::ERR_CERT_AUTHORITY_INVALID</p>
  </blockquote>
  
  <p>Intellij-Error screenshot: 
  <a href="https://i.stack.imgur.com/sA1Vd.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/sA1Vd.png" alt="enter image description here"></a></p>
  
  <p><strong>Update:</strong>
  I have managed to import Jetbrain's Keystore to my keystore, it now has 2 entries but still won't work:</p>
  
  <blockquote>
    <p>Keystore enthält 2 Einträge</p>
    
    <p>jetbrains, 20.07.2015, trustedCertEntry,  Zertifikat-Fingerprint
    (SHA1): C3:83:F6:0A:6A:99:86:F3:B6:B3:38:44:8C:42:66:64:0F:07:DB:5A
    plugins.jetbrains.com, 20.07.2015, trustedCertEntry, 
    Zertifikat-Fingerprint (SHA1):
    DF:47:A0:22:81:4B:79:F0:E5:C2:E1:4E:B4:CA:8A:0D:B9:1D:32:CC</p>
  </blockquote>