1 files changed, 40 insertions, 0 deletions
diff --git a/main/src/plugins/omemo/ui/util.vala b/main/src/plugins/omemo/ui/util.vala
new file mode 100644
index 00000000..e250ff4d
--- /dev/null
+++ b/main/src/plugins/omemo/ui/util.vala
@@ -0,0 +1,40 @@
+using Xmpp.Util;
+
+namespace Dino.Plugins.Omemo {
+
+public static string fingerprint_from_base64(string b64) {
+    uint8[] arr = Base64.decode(b64);
+
+    arr = arr[1:arr.length];
+    string s = "";
+    foreach (uint8 i in arr) {
+        string tmp = i.to_string("%x");
+        if (tmp.length == 1) tmp = "0" + tmp;
+        s = s + tmp;
+    }
+
+    return s;
+}
+
+public static string fingerprint_markup(string s) {
+    return "<span font_family='monospace' font='9'>" + format_fingerprint(s) + "</span>";
+}
+
+public static string format_fingerprint(string s) {
+    string markup = "";
+    for (int i = 0; i < s.length; i += 4) {
+        string four_chars = s.substring(i, 4).down();
+
+        if (i % 32 == 0 && i != 0) markup += "\n";
+        markup += four_chars;
+        if (i % 16 == 12 && i % 32 != 28) {
+            markup += " ";
+        }
+        if (i % 8 == 4 && i % 16 != 12) {
+            markup += "\u00a0"; // Non-breaking space
+        }
+    }
+    return markup;
+}
+
+}