diff --git a/common/keys/definitions/definitions_dev_hex b/common/keys/definitions/definitions_dev_hex
new file mode 100644
index 0000000000..544cfaf6d7
--- /dev/null
+++ b/common/keys/definitions/definitions_dev_hex
@@ -0,0 +1 @@
+4141414141414141414141414141414141414141414141414141414141414141
diff --git a/common/keys/definitions/definitions_dev_hex.pub b/common/keys/definitions/definitions_dev_hex.pub
new file mode 100644
index 0000000000..2be874c4bd
--- /dev/null
+++ b/common/keys/definitions/definitions_dev_hex.pub
@@ -0,0 +1 @@
+db995fe25169d141cab9bbba92baa01f9f2e1ece7df4cb2ac05190f37fcc1f9d