Add a class for modulus representations (mbedtls_mpi_mod_rep_selector).
Add a method to convert a number to any representation.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
With the default input style (which is "variable"), fill all bignum test
case arguments to the same width as the modulus.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Tests are refactored to generate separate cases for 32-bit and 64-bit
limbs using arch_split. Duplicate arguments and branching in the test
function is removed.
Signed-off-by: Werner Lewis <werner.lewis@arm.com>
This patch adds autogenerated inputs for the
`mpi_mod_raw_neg()` test in the bignum_mod_raw suite.
Signed-off-by: Minos Galanakis <minos.galanakis@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>
Remove old dataset that was overriding the defaults in bignum_core. This
will change the datasets for core_sub and core_add to the default
inherited from bignum_common.
Signed-off-by: Janos Follath <janos.follath@arm.com>
Add data for small values, 192 bit and 1024 bit values, primes,
non-primes odd, even, and some typical corner cases.
All subclasses override this for the time being so there are no changes
to the test cases.
Signed-off-by: Janos Follath <janos.follath@arm.com>
The goal of this commit is to add some constants that can be used to
define datasets and add test data in a more readable and reusable
manner.
All platforms using ECC need to support calculations with at least 192
bits, therefore constants for this length are added. We are not using a
curve prime as those will be tested elsewhere and it is better not to
play favourites.
All platforms using RSA or FFDH need to support calculations with at
least 1024 bits, therefore numbers of this size are added too.
A safe prime is added for both sizes as it makes all elements generators
(except 0 and 1 of course), which in turn makes some tests more
effective.
Signed-off-by: Janos Follath <janos.follath@arm.com>
Only fixed width input_style uses the default value of the bits_in_limb
parameter, so set it to 32 in order to have less leading zeroes.
Signed-off-by: Janos Follath <janos.follath@arm.com>
There are no intended changes to generated tests. (The ordering of tests
in the mod_raw module has changed.)
Signed-off-by: Janos Follath <janos.follath@arm.com>
The special case list type depends on the arity and the subclass. Remove
type restriction to make defining special case lists more flexible and natural.
Signed-off-by: Janos Follath <janos.follath@arm.com>
Sometimes we don't want all possible combinations of the input data and
sometimes not all combinations make sense. We are adding a convenient
way to decide on a case by case basis. Now child classes only need to
implement the is_valid method and the invalid cases will be filtered out
automatically.
Signed-off-by: Janos Follath <janos.follath@arm.com>
Having int_ variants as an attribute has the advantage of the input
being validated when the object is instantiated. In theory otherwise if
a particular int_ attribute is not accessed, then the invalid argument
is passed to the tests as it is. (This would in all likelihood detected
by the actual test cases, still, it is more robust like this.)
There are no semantic changes to the generated test cases. (The order
of appearance of 64 and 32 bit mpi_core_add_and_add_if test cases has
changed.)
Signed-off-by: Janos Follath <janos.follath@arm.com>
Before arg_ attributes were the arguments as they were defined in the
python script. Turning these into properties and having them take the
form respect the style set in input_style makes the class easier to use
and more consistent.
This change makes the hex_ properties redundant and therefore they are
removed.
There are no semantic changes to the generated test cases. (The order
of appearance of 64 and 32 bit mpi_core_add_and_add_if test cases has
changed.)
Signed-off-by: Janos Follath <janos.follath@arm.com>
The ArchSplit functionality was duplicated and moved to OperationCommon
from the other copy. The remnants of the functionality is moved to the
only subclass using this.
There is no semantic change to the generated tests. The order has
changed however: core_add tests have been moved before core_mla tests
and the order of the 64 and 32 bit versions have been swapped.
Signed-off-by: Janos Follath <janos.follath@arm.com>
The functionality of ModOperationCommonArchSplit is needed in several
subclasses, therefore moving it to a superclass.
There is another, redundant ArchSplit class, which will be removed in a
later commit.
Signed-off-by: Janos Follath <janos.follath@arm.com>
The class BignumModRawOperationArchSplit has functionality that are
needed in other modules, therefore moving it to bignum_common.
Signed-off-by: Janos Follath <janos.follath@arm.com>
The class BignumModRawOperation implements functionality that are needed
in other modules, therefore we move it to common.
No intended changes to test cases. The order of add_and_add_if and sub tests
have been switched.
Signed-off-by: Janos Follath <janos.follath@arm.com>
We need arch split tests in different modules, moving it to the common
module makes it reusable.
No intended changes in the generated tests. (The position of the
core_add_if tests changed, but they are still all there.)
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>
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>
This exposes a bug in mbedtls_mpi_add_mpi() and mbedtls_mpi_sub_mpi() which
will be fixed in a subsequent commit.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This patch moves `BignumModRawOperation` and `BignumModRawOperationArchSplit`
outside of the scaffolding merge slot.
It also renames `r_sqrt` property to `r2`.
Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
This patch modifies the BignumModRawOperation class to
provide special access to key members commonly used
in tests.
It binds the module's getters to conversion functions
which enable automatic conversions such as:
* hex to int.
* zero padding hex strings.
* common Montgomery constants such as R, R^2 and R^01
are now be calculated upon access.
class `BignumModRawOperationArchSplit` is also updated to
utilise the new design.
Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
This patch is adding a basic instantance of `BignumModRawOperation`
and creates an `BignumModRawOperationArchSplit` class, copying
over the implementation of `BignumCoreRawOperationArchSplit`.
Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
Legacy Bignum is excluded as it doesn't get regular extensions like new
ones.
Each slot uses comments of their respective filetype. Since .data files
don't have a syntax for comments, dummy test cases are used. (These test
cases will never be executed and no noise will be added to tests.)
Signed-off-by: Janos Follath <janos.follath@arm.com>
We will need it to pad parameters in the base class, but it is useful
because every child class would need to calculate it anyway.
Signed-off-by: Janos Follath <janos.follath@arm.com>
In Bignum Core the result also involves a carry and both the result and
the carry depend on the size of the limbs.
Before this change both 32 and 64 bit specific result have been passed
to the test functions.
Moving this decision out of the tests makes the test functions easier to
write and read and the test cases easier to read and debug. The change
doesn't make writing the generator script any harder and might even make
reading it easier.
Signed-off-by: Janos Follath <janos.follath@arm.com>
Many bignum tests have multiple calculated result values, so return
these as a list, rather than formatting as a string.
Signed-off-by: Werner Lewis <werner.lewis@arm.com>
