Hi Jerome, On Thu, 27 Feb 2025 at 09:09, Jerome Forissier <jerome.foriss...@linaro.org> wrote: > > This series adds support for HTTP server authentication using root (CA) > certificates. > > As a first step, the wget command is extended to support a sub-command: > cacert <addr> <size>. The memory region shall contain the CA > certificates. With this, it is possible to load the certificates from > storage or get them from the network for example, which is convenient > for testing at least. The Kconfig symbol for this feature is > WGET_CACERT=y. > > Then new Kconfig symbols are added to support providing the certificates > at build time, as a DER or PEM encoded X509 collection: > WGET_BUILTIN_CACERT=y and WGET_BUILTIN_CACERT_PATH=<some path>. > Note that PEM support requires MBEDTLS_LIB_X509_PEM=y (for the cacert > command as well as for the builtin way). > > Here is a complete example (showing only the relevant output from the > various commands): > > make qemu_arm64_lwip_defconfig > wget https://curl.se/ca/cacert.pem > echo CONFIG_WGET_BUILTIN_CACERT=y >>.config > echo CONFIG_WGET_BUILTIN_CACERT_PATH=cacert.pem >>.config > make olddefconfig > make -j$(nproc) CROSS_COMPILE="ccache aarch64-linux-gnu-" > qemu-system-aarch64 -M virt -nographic -cpu max \ > -object rng-random,id=rng0,filename=/dev/urandom \ > -device virtio-rng-pci,rng=rng0 -bios u-boot.bin > => dhcp > # HTTPS transfer using the builtin CA certificates > => wget https://www.google.com/ > 18724 bytes transferred in 15 ms (1.2 MiB/s) > # Disable certificate validation > => wget cacert 0 0 > # Unsafe HTTPS transfer > => wget https://www.google.com/ > WARNING: no CA certificates, HTTPS connections not authenticated > 16570 bytes transferred in 15 ms (1.1 MiB/s) > # Dowload and apply CA certificates from the net > => wget https://curl.se/ca/cacert.pem > WARNING: no CA certificates, HTTPS connections not authenticated > ## > 233263 bytes transferred in 61 ms (3.6 MiB/s) > => wget cacert $fileaddr $filesize > # Now HTTPS is authenticated against the new CA > => wget https://www.google.com/ > 18743 bytes transferred in 14 ms (1.3 MiB/s) > # Drop the certificates again... > => wget cacert 0 0 > # Check that transfer is not secure > => wget https://www.google.com/ > WARNING: no CA certificates, HTTPS connections not authenticated > # Restore the builtin CA > => wget cacert builtin > # No more WARNING > => wget https://www.google.com/ > 18738 bytes transferred in 15 ms (1.2 MiB/s) > > Jerome Forissier (5): > net: lwip: extend wget to support CA (root) certificates > lwip: tls: enforce checking of server certificates based on CA > availability > lwip: tls: warn when no CA exists amd log certificate validation > errors > net: lwip: add support for built-in root certificates > configs: qemu_arm64_lwip_defconfig: enable WGET_CACERT and > MBEDTLS_LIB_X509_PEM > > cmd/Kconfig | 29 ++++++ > cmd/net-lwip.c | 19 +++- > configs/qemu_arm64_lwip_defconfig | 2 + > .../src/apps/altcp_tls/altcp_tls_mbedtls.c | 9 +- > .../lwip/apps/altcp_tls_mbedtls_opts.h | 6 -- > lib/mbedtls/Makefile | 3 + > lib/mbedtls/mbedtls_def_config.h | 5 ++ > net/lwip/Makefile | 6 ++ > net/lwip/wget.c | 90 ++++++++++++++++++- > 9 files changed, 158 insertions(+), 11 deletions(-)
Did you manage to add some sandbox tests for lwip? Regards, Simon
