At the end of the benchmark program, heap stats are printed, and these
stats will be wrong if we reset counters in the middle.
Also remove the function to reset counters, in order to encourage other
programs to behave correctly as well.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
This no longer makes sense since pre-computed multiples of the base
point are now static. The function was not doing anything since `grp.T`
was set to `NULL` when exiting `ecp_mul_comb()` anyway.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
The "proper" fix would be to define the function only when it's needed,
but the condition for that would be tedious to write (enumeration of all
symmetric crypto modules) and since this is a utility program, not the
core library, I think it's OK to keep unused functions.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
This improves readibility and prepares for further changes
like the introduction of a single double-width temporary for
ECP arithmetic.
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
Fix library references, tests and programs.
Testing is performed in the already present all.sh test.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
`ecp_add_mixed()` and `ecp_double_jac()` are the core subroutines
for elliptic curve arithmetic, and as such crucial for the performance
of ECP primitives like ECDHE and ECDSA.
This commit provides a very slight simplification and performance and
memory usage improvement to `ecp_add_mixed()` by removing the use of
three temporary MPIs used for coordinate calculations.
Where those variables were used, the code now writes directly to the
coordinate MPIs of the target elliptic curve point.
This is a valid change even if there is aliasing between input and
output, since at the time any of the coordinate MPIs in question is
written, the corresponding coordinates of both inputs are no longer
read.
(The analogous change in `ecp_double_jac()` can not be made since
this property does not hold for `ecp_double_jac()`.)
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
This commit removes code from the Montgomery multiplication routine
`mpi_montmul()` which seems to serve no purpose.
Details: `mpi_montmul()` uses a temporary storage `T` for intermediate
results which is assumed to be of twice the size as the inputs to be
multiplied, and which is used as follows: After the i-th (i=0,1,...)
iteration, the n-limb word starting at `T->p + i + 1` contains the
Montgomery multiplication of B with the limbs 0,..,i of A, and the
variable `d` points to `T->p + i + 1`. In particular, after `n` iterations,
`T->p + n` holds the full multiplication
(subject to conditional subtraction).
As a consequence of this way of using the temporary `T`, the contents
of `{T->p, ..., T->p + i}` are irrelevant after the i-th iteration. Nonetheless,
the code copies `A[i]` to `T->p[i]` at the end of the i-th iterations, which is
redundant and can be removed.
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
* Updated the default argument to create less noise with argument
passing.
* Reworded ChangeLog to match MbedTLS documentation/ announcement
requirements
Signed-off-by: Archana <archana.madhavan@silabs.com>
Jinja2 rev 2.10.1 is required for the driver wrappers code gen.
The same is set up in the bionic docker file.
Signed-off-by: Archana <archana.madhavan@silabs.com>
Pylint errors are fixed.
The Python script is improved to take default arguments when not
passed (eg invoked from root of the tree)
check-generated-files.sh and CMakeLists.sh updated.
Signed-off-by: Archana <archana.madhavan@silabs.com>
Moved python script generate_driver_wrappers.py under scripts and
corresponding template file under script/data_files.
Signed-off-by: Archana <archana.madhavan@silabs.com>
