Switch to the development branch of Mbed TLS

[daverodgman]

As per #5637, return to fuzzing the development branch of Mbed TLS.

Signed-off-by: Dave Rodgman dave.rodgman@arm.com

[daverodgman]

Update as most of the projects have been updated independently of this PR

[DavidKorczynski]

@guidovranken - could you verify this one?

[guidovranken]

Thanks @daverodgman

You can also remove these 2 lines since they are not supported by the new version of mbed TLS:

oss-fuzz/projects/cryptofuzz/build.sh

Lines 319 to 320 in 61dac92

	scripts/config.pl set MBEDTLS_MD2_C
	scripts/config.pl set MBEDTLS_MD4_C

I'm getting these errors when I compile the existing Cryptofuzz module with the new mbed TLS: https://gist.github.com/guidovranken/2990a57942a53043a3032b0681214a5a

Would you mind giving some pointers how to work around these?

[daverodgman]

Hi, the errors relate to these changes:

https://github.com/ARMmbed/mbedtls/blob/development/docs/3.0-migration-guide.md#most-structure-fields-are-now-private

We do have a planned task to add accessors for these fields:

Mbed-TLS/mbedtls#4838
Mbed-TLS/mbedtls#5017

In the short term, probably using the MBEDTLS_PRIVATE macro is the way to go.

[guidovranken]

I've made the requisite changes to both the fuzzer and to #7062 so this PR can be closed.

[DavidKorczynski]

Thanks @guidovranken