Use correct sticker pack key length of 32. (#288)

* Use correct sticker pack key length of 32.

* Update dependencies

Co-authored-by: AsamK <asamk@gmx.de>

build.gradle

@@ -20,7 +20,7 @@ repositories {
 }
 
 dependencies {
-    compile 'com.github.turasa:signal-service-java:2.15.3_unofficial_5'
+    compile 'com.github.turasa:signal-service-java:2.15.3_unofficial_6'
     compile 'org.bouncycastle:bcprov-jdk15on:1.64'
     compile 'net.sourceforge.argparse4j:argparse4j:0.8.1'
     compile 'org.freedesktop.dbus:dbus-java:2.7.0'

src/main/java/org/asamk/signal/manager/KeyUtils.java

@@ -35,7 +35,7 @@ class KeyUtils {
     }
 
     static byte[] createStickerUploadKey() {
-        return getSecretBytes(64);
+        return getSecretBytes(32);
     }
 
     private static String getSecret(int size) {