fix AES default (#575)

* fix AES default

* fix AES default

src/edge.c

@@ -175,9 +175,9 @@ static void help () {
            "                         | causes connections stall when not properly supported.\n");
 #endif
     printf("-r                       | Enable packet forwarding through n2n community.\n");
-    printf("-A1                      | Disable payload encryption. Do not use with key (defaulting to Twofish then).\n");
-    printf("-A2 ... -A5 or -A        | Choose a cipher for payload encryption, requires a key: -A2 = Twofish (default),\n");
-    printf("                         | -A3 or -A (deprecated) = AES, "
+    printf("-A1                      | Disable payload encryption. Do not use with key (defaulting to AES then).\n");
+    printf("-A2 ... -A5 or -A        | Choose a cipher for payload encryption, requires a key: -A2 = Twofish,\n");
+    printf("                         | -A3 or -A (deprecated) = AES (default), "
            "-A4 = ChaCha20, "
            "-A5 = Speck-CTR.\n");
     printf("-H                       | Enable full header encryption. Requires supernode with fixed community.\n");
@@ -792,9 +792,9 @@ int main (int argc, char* argv[]) {
 
     if(conf.transop_id == N2N_TRANSFORM_ID_NULL) {
         if(conf.encrypt_key) {
-            /* make sure that Twofish is default cipher if key only (and no cipher) is specified */
-            traceEvent(TRACE_WARNING, "Switching to Twofish as key was provided.");
-            conf.transop_id = N2N_TRANSFORM_ID_TWOFISH;
+            /* make sure that AES is default cipher if key only (and no cipher) is specified */
+            traceEvent(TRACE_WARNING, "Switching to AES as key was provided.");
+            conf.transop_id = N2N_TRANSFORM_ID_AES;
         }
     }