And use it in the non-PSA version of mbedtls_pk_sign_ext()
to bypass checks that didn't succeed when used by TLS 1.3.
That is because in the failing scenarios the padding of
the RSA context is not set to PKCS_V21.
See the discussion on PR #7930 for more details.
Signed-off-by: Tomi Fontanilles <129057597+tomi-font@users.noreply.github.com>
