Earlier refactoring created a call for get_public_bytes() that was added
to the RSA class, but missed on the ECDSA class. Add this call so that
ECDSA signatures will work again.
Signed-off-by: David Brown <david.brown@linaro.org>
Add a `--rust` flag to the getpub subcommand to output the public key in
Rust format rather than C.
Signed-off-by: David Brown <david.brown@linaro.org>
Add support for the RSA-PSS signature algorithm to imgtool.py. This
algorithm has a strong security proof, and is recommended for all new
designs. The new algorithm is enabled by default for RSA signatures to
match the default in the bootloader also being changed.
This is the start of a python implementation of imgtool. This
implements all of the functionality that was missing in the zep2newt.py
tool, namely creation of keypairs, and converting the public version of
these keys into C code.
David Brown