commit 47b77c521a64d7456273ddb0868eae8ca2f93cae
author David Brown <david.brown@linaro.org> Thu Nov 16 15:10:22 2017 -0700
committer David Brown <davidb@davidb.org> Tue Jan 09 09:41:30 2018 -0700
tree ab35ea6b40172c99acf4a7e4b42c8d995b4e2711
parent 5e7c6dd58a0877cd702f70b509a1ee9781d03cc1

imgtool: Fix signing payload type

The 'cryptography' library is pickier about the data it is asked to
sign.  Get the bytes value out of the bytearray for doing the actual
signature.

Signed-off-by: David Brown <david.brown@linaro.org>

scripts/imgtool/image.py

diff --git a/scripts/imgtool/image.py b/scripts/imgtool/image.py
index 79a342d..efd20d7 100644
--- a/scripts/imgtool/image.py
+++ b/scripts/imgtool/image.py
@@ -125,7 +125,7 @@
             pubbytes = sha.digest()
             tlv.add('KEYHASH', pubbytes)
 
-            sig = key.sign(self.payload)
+            sig = key.sign(bytes(self.payload))
             tlv.add(key.sig_tlv(), sig)
 
         self.payload += tlv.get()