The external representation before included more than just endianness
(like reading in Mongtomery curve scalars or converting hashes to
numbers in a standard compliant way).
These are higher level concepts and are out of scope for Bignum and for
the modulus structure.
Passing endianness as a parameter is a step towards removing it from the
modulus structure.
Signed-off-by: Janos Follath <janos.follath@arm.com>
The external representation before included more than just endianness
(like reading in Mongtomery curve scalars or converting hashes to
numbers in a standard compliant way).
These are higher level concepts and are out of scope for Bignum and for
the modulus structure.
Passing endianness as a parameter is a step towards removing it from the
modulus structure.
Signed-off-by: Janos Follath <janos.follath@arm.com>
In theory we could allow residues to have more allocated limbs than the
modulus, but we might or might not need it in the end.
Go for the simpler option for now and we can extend it later if we
really need it.
Signed-off-by: Janos Follath <janos.follath@arm.com>
We want to make sure that the value has at least as many limbs allocated
as the modulus as we need this to be able to do any operations in
constant time.
An invariant of the API is that the residue values are canonical, make
sure that the residue is compared to the entire modulus.
Signed-off-by: Janos Follath <janos.follath@arm.com>
This patch adjusts the I/O methods and the tests.
Documentation has also been updated to be more clear.
Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
This patch adjusts the logic of the size checking of the method,
and refactors the tests. Documentation has also been updated.
Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
This patch is inverting the input type checking logic in the method,
in order to ensure that residue < modulus.
Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
This patch adds the following tests for the high levet IO api:
* mpi_mod_io_neg
* mpi_mod_io
Manually generated test data has also been included.
Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
CID is now enabled in the default config (as well as full), so it's
already tested in numerous all.sh components, not need to add one for
that.
We need a component for the legacy/compat option though as it's never
enabled in existing components. So, keep that one, but adjust the name
and fix a typo in a message.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
We don't need to have two copies of the test with one of them depending
on legacy/compat CID: we can have just one copy, but make sure we run
ssl-opt.sh both in a build with standard CID and in a build with
legacy/compat - that's the job of all.sh (see next commit).
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
Per suggestion from Manuel, I removed this redundant test.
Signed-off-by: Hannes Tschofenig <hannes.tschofenig@arm.com>
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
Added also extra text.
Signed-off-by: Hannes Tschofenig <hannes.tschofenig@arm.com>
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
OpenSSL may be configured to support features such as cipher suites or
protocol versions that are disabled by default. Enable them all: we're
testing, we don't care about enabling insecure stuff. This is not needed
with the builds of OpenSSL that we're currently using on the Jenkins CI, but
it's needed with more recent versions such as typically found on developer
machines, and with future CI additions.
The syntax to do that was only introduced in OpenSSL 1.1.0; fortunately we
don't need to do anything special with earlier versions.
With OpenSSL 1.1.1f on Ubuntu 20.04, this allows SHA-1 in certificates,
which is still needed for a few test cases in ssl-opt.sh. Curiously, this is
also needed for the cipher suite TLS-DHE-PSK-WITH-ARIA-128-GCM-SHA256 (and
no other, including other DHE-PSK or ARIA cipher suites).
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
psa_cipher_encrypt() and psa_cipher_decrypt() sometimes add a zero offset to
a null pointer when the cipher does not use an IV. This is undefined
behavior, although it works as naively expected on most platforms. This
can cause a crash with modern Clang+ASan (depending on compiler optimizations).
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
The test cases aim to mirror the legacy function, but needed the some
cases to be removed because:
- Null representation is not valid in core
- There are no negative numbers in core
- Bignum core doesn't do parameter checking and there are no promises for
even N
The _size variant of the test has been removed as bignum core doesn't do
parameter checking and there is no promises for inputs that are larger
than MBEDTLS_MPI_MAX_SIZE.
Signed-off-by: Janos Follath <janos.follath@arm.com>
Now that we have a function that calls
mbedtls_mpi_core_ct_uint_table_lookup(), the compiler won't complain if
we make it static.
Signed-off-by: Janos Follath <janos.follath@arm.com>
- external errors are now checked in the specified point. If the
same error happens in another line, then this is not valid and
the test fails
- fixed some inconsistency in which injected error codes were not
taken from the data file. Now all the expected error code are
read from the data file
- added a couple of defines to shrink the code
Signed-off-by: Valerio Setti <vsetti@baylibre.com>
As for ecjpake_setup(), now the test function can handle:
- "external" errors, through parameters set by the data file
- "internal" ones, through enums which inject ad-hoc failures
Similarly also ecjpake_rounds() can handle both type of errors,
but right now there's no erroneous case in the associated ".data"
file.
In both cases, after an error the current test is terminated.
Signed-off-by: Valerio Setti <vsetti@baylibre.com>
Eventually we want it to be enabled by default
when TLS 1.3 is enabled but currently the
feature is on development thus it should not be
enabled by default.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Normally we need all the combinations, unique combinations make sense
only if the operation is commutative.
No changes to generated tests.
Signed-off-by: Janos Follath <janos.follath@arm.com>
The class BaseTarget served two purposes:
- track test cases and target files for generation
- provide an abstract base class for individual test groups
Splitting these allows decoupling these two and to have further common
superclasses across targets.
No intended change in generated test cases.
Signed-off-by: Janos Follath <janos.follath@arm.com>
The value of the first sent signature algorithm is overwritten.
This test forces only a single algorithm to be sent and then
validates that the client received such algorithm.
04 03 is the expected value for SECP256R1_SHA256.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
Now when operation holds pointer to dynamically allocated buffer for password key we can't do copy of the operation object in test instead we need to re-initialize operation object after error.
Signed-off-by: Przemek Stekiel <przemyslaw.stekiel@mobica.com>
Looking for the .data file doesn't work in out-of-tree builds. Use the
.datax file instead. `make clean` removes all .datax files, so this resolves
the issue of executables not present on the current branch being left behind
after a branch change followed by a `make clean`.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
When x is the most negative value of a two's complement type,
`(unsigned_type)(-x)` has undefined behavior, whereas `-(unsigned_type)x`
has well-defined behavior and does what was intended.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Although negative zero is officially unsupported, we've had bugs related to
it in the past. So do test functions with a negative zero input.
There will likely be cases where we don't want to accept negative zero as if
it was valid, because it's too hard to handle. We'll add exceptions on a
case by case basis.
For the functions that are currently tested by the generated tests, the new
test cases pass.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
The bignum module does not officially support "negative zero" (an
mbedtls_mpi object with s=-1 and all limbs zero). However, we have a
history of bugs where a function that should produce an official
zero (with s=1), produces a negative zero in some circumstances. So it's
good to check that the bignum functions are robust when passed a negative
zero as input. And for that, we need a way to construct a negative zero
from test case arguments.
There are checks that functions don't produce negative zeros as output in
the test suite. Skip those checks if there's a negative zero input: we
don't want functions to _create_ negative zeros, but we don't mind if
they _propagate_ negative zeros.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This is to ensure that the MbedTLS based implementation of EC-JPAKE
is compatible with the PSA crypto one
Signed-off-by: Valerio Setti <vsetti@baylibre.com>
