diff --git a/scripts/imgtool/keys/general.py b/scripts/imgtool/keys/general.py
index 3ba34cb..f6b8a09 100644
--- a/scripts/imgtool/keys/general.py
+++ b/scripts/imgtool/keys/general.py
@@ -5,11 +5,10 @@
 AUTOGEN_MESSAGE = "/* Autogenerated by imgtool.py, do not edit. */"
 
 class KeyClass(object):
-    def _public_emit(self, header, trailer, indent, file=sys.stdout, len_format=None):
+    def _emit(self, header, trailer, encoded_bytes, indent, file=sys.stdout, len_format=None):
         print(AUTOGEN_MESSAGE, file=file)
         print(header, end='', file=file)
-        encoded = self.get_public_bytes()
-        for count, b in enumerate(encoded):
+        for count, b in enumerate(encoded_bytes):
             if count % 8 == 0:
                 print("\n" + indent, end='', file=file)
             else:
@@ -17,19 +16,30 @@
             print("0x{:02x},".format(b), end='', file=file)
         print("\n" + trailer, file=file)
         if len_format is not None:
-            print(len_format.format(len(encoded)), file=file)
+            print(len_format.format(len(encoded_bytes)), file=file)
 
-    def emit_c(self, file=sys.stdout):
-        self._public_emit(
+    def emit_c_public(self, file=sys.stdout):
+        self._emit(
                 header="const unsigned char {}_pub_key[] = {{".format(self.shortname()),
                 trailer="};",
+                encoded_bytes=self.get_public_bytes(),
                 indent="    ",
                 len_format="const unsigned int {}_pub_key_len = {{}};".format(self.shortname()),
                 file=file)
 
-    def emit_rust(self, file=sys.stdout):
-        self._public_emit(
+    def emit_rust_public(self, file=sys.stdout):
+        self._emit(
                 header="static {}_PUB_KEY: &'static [u8] = &[".format(self.shortname().upper()),
                 trailer="];",
+                encoded_bytes=self.get_public_bytes(),
                 indent="    ",
                 file=file)
+
+    def emit_private(self, minimal, file=sys.stdout):
+        self._emit(
+                header="const unsigned char enc_priv_key[] = {",
+                trailer="};",
+                encoded_bytes=self.get_private_bytes(minimal),
+                indent="    ",
+                len_format="const unsigned int enc_priv_key_len = {};",
+                file=file)