File u_tigervnc-display-SHA-1-fingerprint-of-untrusted-certificate.patch of Package tigervnc.openSUSE_Leap_42.1_Update

From af09e89d54b57649cf60363d03f84d129baecd27 Mon Sep 17 00:00:00 2001
From: Michal Srb <michalsrb@gmail.com>
Date: Tue, 7 Jul 2015 02:38:18 +0300
Subject: [PATCH 2/2] Display SHA-1 fingerprint of untrusted certificate in
 java client.

---
 java/com/tigervnc/rfb/CSecurityTLS.java | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/java/com/tigervnc/rfb/CSecurityTLS.java b/java/com/tigervnc/rfb/CSecurityTLS.java
index 7633f08..6014502 100644
--- a/java/com/tigervnc/rfb/CSecurityTLS.java
+++ b/java/com/tigervnc/rfb/CSecurityTLS.java
@@ -248,9 +248,28 @@ public class CSecurityTLS extends CSecurity {
 	      tm.checkServerTrusted(chain, authType);
       } catch (CertificateException e) {
         Object[] answer = {"Proceed", "Exit"};
+
+        StringBuilder message = new StringBuilder();
+        message.append(e.getCause().getLocalizedMessage());
+        message.append("\nContinue connecting to this host?");
+
+        try {
+          MessageDigest sha1 = MessageDigest.getInstance("SHA1");
+          sha1.update(chain[0].getEncoded());
+
+          message.append("\nSHA-1 fingerprint: ");
+
+          for(byte B : sha1.digest()) {
+            message.append(Integer.toHexString(0xff & B));
+            message.append(':');
+          }
+          message.deleteCharAt(message.length() - 1);
+        } catch (NoSuchAlgorithmException noSuchAlgorithmException) {
+          // No fingerprint then...
+        }
+
         int ret = JOptionPane.showOptionDialog(null,
-          e.getCause().getLocalizedMessage()+"\n"+
-          "Continue connecting to this host?",
+          message.toString(),
           "Confirm certificate exception?",
           JOptionPane.YES_NO_OPTION, JOptionPane.WARNING_MESSAGE,
           null, answer, answer[0]);
-- 
2.1.4