Same as mbedtls_ecp_write_key(), but doesn't require the caller to figure out
the length of the output and possibly distinguish between Weierstrass and
Montgomery curves.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Document and test the current behavior, even if it is weird:
* For Weierstrass keys, the error is MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL,
not MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL.
* For Weierstrass keys, a smaller output buffer is ok if the output fits.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Set the public key in a key pair. This complements mbedtls_ecp_read_key and
the functions can be used in either order.
Document the need to call check functions separately.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
For tests running the ecp_fast_mod with MBEDTLS_ECP_DP_SECPXXXR1 the
dependency MBEDTLS_ECP_NIST_OPTIM has been added as this gives the
curves the optimised reduction function that ecp_fast_mod tests.
Signed-off-by: Agathiyan Bragadeesh <agabra02@e127300.arm.com>
This patch introduces the following changes:
* Documentation for `mbedtls_ecp_modulus_setup()`
moved to `ecp_invasive.h`.
* Added invalid modulus selector `MBEDTLS_ECP_MOD_NONE`.
* Adjusted negative tests to use invalid selectors.
* Reworded documentation.
Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
Rename the function to 'fix_quasi_reduction' to better suite its functionality.
Also changed the name prefix to suite for the new module.
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
Spec values are now always used for test data, and conversion to
internal representation is done in the test function.
Signed-off-by: Werner Lewis <werner.lewis@arm.com>
Test cases added to check curve parameters and information for each
curve supported. Expected parameters are taken from references: SEC 2
for NIST, RFC 5639 for Brainpool, and RFC 7748 for curve25519/curve448.
Signed-off-by: Werner Lewis <werner.lewis@arm.com>
Tests function with various ECP point conditions, covering freshly
initialized, zeroed, non-zero, and freed points.
Signed-off-by: Werner Lewis <werner.lewis@arm.com>
- parameter name in function description
- test_suite_ecp.data: add new line at the end of file
Signed-off-by: Przemek Stekiel <przemyslaw.stekiel@mobica.com>
* Add tests to validate MSB not ok for Curve25519 and
Curve448.
* Add a test to generate key for for Curve448.
Signed-off-by: Archana <archana.madhavan@silabs.com>
mbedtls_ecp_read_key and mbedtls_ecp_write_key are updated to include
support for Curve448 as prescribed by RFC 7748 §5.
Test suites have been updated to validate curve448 under Montgomery
curves.
Signed-off-by: Archana <archana.madhavan@silabs.com>
Negative x coordinate was tested with the value -1. It happens to be one
of the low order points both for Curve25519 and Curve448 and might be
rejected because of that and not because it is negative. Make sure that
x < 0 is the only plausible reason for the point to be rejected.
Signed-off-by: Janos Follath <janos.follath@arm.com>
A test case for which the loop would take practically forever if it was
reached. The point would be to validate that the loop is not reached.
The test case should cause the CI to time out if starting with the
current code, ecp_check_pubkey_mx() was changed to call
ecp_check_pubkey_x25519() first and run the mbedtls_mpi_size(() test
afterwards, which would make no semantic difference in terms of memory
contents when the function returns, but would open the way for a DoS.
Signed-off-by: Janos Follath <janos.follath@arm.com>
