docs: Write up some docs about ecdsa padding
Start with some documentation on ECDSA signatures, and the problems with
the current padding approach. Present a plan to support correctly
formatted ECDSA signatures, and how to handle the transition both in the
C code, as well as the tooling that signs images.
Signed-off-by: David Brown <david.brown@linaro.org>
diff --git a/docs/index.md b/docs/index.md
index d9c70cb..3c4d1a3 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -20,6 +20,7 @@
- [Bootloader design](design.md)
- [Encrypted images](encrypted_images.md)
- [imgtool](imgtool.md) - image signing and key management
+- [ecdsa](ecdsa.md) - Information about ECDSA signature formats
- Usage instructions:
- [Zephyr](readme-zephyr.md)
- [Mynewt](readme-mynewt.md)