Don't try to encrypt null body

Stephen Paul Weber created 2 years ago

Change summary

src/main/java/eu/siacs/conversations/crypto/axolotl/XmppAxolotlMessage.java | 2 
1 file changed, 2 insertions(+)

Detailed changes

src/main/java/eu/siacs/conversations/crypto/axolotl/XmppAxolotlMessage.java

@@ -146,6 +146,8 @@ public class XmppAxolotlMessage {
     }
 
     void encrypt(final String plaintext) throws CryptoFailedException {
+        if (plaintext == null) return;
+
         try {
             SecretKey secretKey = new SecretKeySpec(innerKey, KEYTYPE);
             IvParameterSpec ivSpec = new IvParameterSpec(iv);