Since MBEDTLS_TIMING_C is enabled, mbedtls_entropy_init() adds the weak
source MBEDTLS_ENTROPY_MAX_SOURCES(). With mbedtls_platform_entropy_poll(),
this makes two sources. The unit tests need room for a third source.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
1. Copy config-ccm-psk-tls1_2.h
2. Add DTLS support
3. Add some TLS and DTLS features that are useful in low-bandwidth,
low-reliability networks
4. Reduce the SSL buffer to a very small size
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
time() is only needed to seed the PRNG non-deterministically. If it isn't
available, do seed it, but pick a static seed.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
The timing module might include time.h on its own when on
a suitable platform, even if MBEDTLS_HAVE_TIME is disabled.
Co-authored-by: Tom Cosgrove <tom.cosgrove@arm.com>
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
Having such implementation might cause issues for those that
expect to have a working implementation.
Having a compile-time error is better in such case.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
The LTS branch hasn't been updated in the contributing guidelines.
Deleting it instead of updating as the information is available at the
link above and deleting prevents similar mistakes in the future.
Signed-off-by: Janos Follath <janos.follath@arm.com>
Encrypt-Then-Mac (ETM) is supported in Mbed TLS
server for TLS version geater than SSLv3 and only
for the CBC cipher mode thus make it
clear in the SSL context.
The previous code was ok as long as the check of
the ETM status was done only in the case of the CBC
cipher mode but fragile as #5573 revealed.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Also move the self test implementation guards
so that alternate implementations must
provide their own.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
MBEDTLS_HAVE_TIME_ALT implies MBEDTLS_HAVE_TIME, so an extra
check for MBEDTLS_HAVE_TIME is not needed.
Signed-off-by: David Horstmann <david.horstmann@arm.com>
Allow programs/test/udp_proxy.c to build when MBEDTLS_HAVE_TIME is
not defined. In this case, do not attempt to seed the pseudo-random
number generator used to sometimes produce corrupt packets and other
erroneous data.
Signed-off-by: David Horstmann <david.horstmann@arm.com>
To be able to test utility programs for an absence of time.h, we need a
baremetal config that is not crypto only. Add one.
Signed-off-by: Daniel Axtens <dja@axtens.net>
baremetal compiles should not include time.h, as MBEDTLS_HAVE_TIME is
undefined. To test this, provide an overriding include directory that
has a time.h which throws a meaningful error if included.
Signed-off-by: Daniel Axtens <dja@axtens.net>
MBEDTLS_HAVE_TIME is documented as: "System has time.h and time()."
If that is not defined, do not attempt to include time.h.
A particular problem is platform-time.h, which should only be included if
MBEDTLS_HAVE_TIME is defined, which makes everything messier. Maybe it
should be refactored to have the check inside the header.
Signed-off-by: Daniel Axtens <dja@axtens.net>
Make it safe to import the config multiple times without having
multiple definition errors.
(This prevents errors in the fuzzers in a later patch.)
Signed-off-by: Daniel Axtens <dja@axtens.net>
This is automatic in CPython but not guaranteed by the language. Be friendly
to other Python implementations.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
The storage format comparison has a dual purpose: detect format changes that
lead to a loss of backward compatibility, and detect loss of test coverage.
For loss of backward compatibility, the read tests are the relevant ones.
For loss of test coverage, all generated test cases are potentially
relevant, but this script currently focuses on storage format (where a loss
of test coverage may be a symptom of a loss of backward compatibility).
Therefore, storage format test comparison now looks at manually written
storage format tests, but only if they're read tests.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Expand abi_check.py to look for backward incompatibilities not only in
the interface exposed to application code (and to some extent driver
code), but also to the interface exposed via the storage format, which
is relevant when upgrading Mbed TLS on a device with a PSA keystore.
Strictly speaking, the storage format checks look for regressions in
the automatically generated storage format test data. Incompatible
changes that are not covered by the generated tests will also not be
covered by the interface checker.
A known defect in this commit is that the --brief output is not brief
for storage format checks.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This way we can add other checks and only run a subset of all the
checks. The default remains to run all the checks.
I made separate options for API and ABI, but since we use the same
tool for both and it doesn't have an obvious way to check only API or
only ABI, the two options must be both enabled or both disabled.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
