Work in progress, some tasks have very explicit definitions and details
on how to execute, others much less so; some may need splitting.
These documents are temporary anyway, to give a rough idea of the work
remaining to reach those goals (both of which we started, but only for
some use case so far). Ultimately the result will be actionable and
estimated tasks on github.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
Note: removed `mbedtls_x509write_crt_set_subject_key()` from the list of
things that should be tested, as it's taking public key rather than a
keypair.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
This is an updated version of the study that was done a few years ago.
The script `syms` was used to list symbols form libmbedtls.a /
libmbedx509.a that are defined externally. It was run with config.py
full minus MBEDTLS_USE_PSA_CRYPTO minus
MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
Combine the changelog entries for the memory constraints fix on
aarch64 and amd64, since these are essentially fixing the same
issue.
Signed-off-by: David Horstmann <david.horstmann@arm.com>
Don't mention "TLS 1.2 only" for PSK, as that could give the impression
that the other things about TLS are supported beyond 1.2, which isn't
the case currently.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
The section is about things that are not covered, but some lists are
about things that are covered, which was very confusing.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
Add memory constraints to the aarch64 inline assembly in MULADDC_STOP.
This fixes an issue where Clang 12 and 13 were generating
non-functional code on aarch64 platforms. See #4962, #4943
for further details.
Signed-off-by: David Horstmann <david.horstmann@arm.com>
Also, remove the section about design considerations for now. It's
probably more suitable for a developer-oriented document that would also
include considerations about possible paths for the future, which would
better be separated from user documentation (separating the certain that
is now, from the uncertain that might or might not be later).
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
The API reached 1.0.0 some time ago, and we've caught up with the
incompatible changes already.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
MULADDC_CORE reads from (%%rsi) and writes to (%%rdi). This fragment is
repeated up to 16 times, and %%rsi and %%rdi are s and d on entry
respectively. Hence the complete asm statement reads 16 64-bit words
from memory starting at s, and writes 16 64-bit words starting at d.
Without any declaration of modified memory, Clang 12 and Clang 13 generated
non-working code for mbedtls_mpi_mod_exp. The constraints make the unit
tests pass with Clang 12.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This parameter was set but not used, which was pointless. Clang 14 detects
this and legitimately complains.
Remove the parameter. This is an internal function, only called once. The
caller already has a sufficient check on the output buffer size which
applies in more cases, so there is no real gain in robustness in adding the
same check inside the internal function.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Fix opaque key test vector dependency to PSA_CRYPTO_DRIVER_TEST
instead of MBEDTLS_PSA_CRYPTO_DRIVERS while validating with
test drivers.
Signed-off-by: Archana <archana.madhavan@silabs.com>
The target attributes for key copy could have key bits and
type zeroed. If so, they need to be overwritten/ inherited
from the source key.
This is now forcefully overwritten after validating the
optional attributes. As a result assigning attributes type
and bits after copy are no longer necessary.
Signed-off-by: Archana <archana.madhavan@silabs.com>
A minimal test driver extension is added to support
copy of opaque keys within the same location.
Test vector support is extended to cover opaque keys.
Signed-off-by: Archana <archana.madhavan@silabs.com>
The validation against key width and max key bits is extended to
all key types from the existing validation for only symmetric keys.
Signed-off-by: Archana <archana.madhavan@silabs.com>
