Update 'crss-reg/crss-reg-exist-dev.yml'

crss-reg/crss-reg-exist-dev.yml

@@ -42,4 +42,7 @@ crss:
       username: pemc
       password: 123qwe
   attestation:
-    root-folder: /crss/attestation
+    root-folder: /crss/attestation
+  crypto:
+    aes:
+      key: 1234567890abcdef