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Add tests for mod_mul

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Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
This commit is contained in:
Gabor Mezei
2022-12-13 10:53:50 +01:00
parent 9db81e9cca
commit eca74668c7
3 changed files with 212 additions and 0 deletions
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19
scripts/mbedtls_dev/bignum_mod.py
View File

@@ -31,6 +31,25 @@ class BignumModTarget(test_data_generation.BaseTarget):
# BEGIN MERGE SLOT 2 # BEGIN MERGE SLOT 2
class BignumModMul(bignum_common.ModOperationCommon,
BignumModTarget):
"""Test cases for bignum mpi_mod_mul()."""
symbol = "*"
test_function = "mpi_mod_mul"
test_name = "mbedtls_mpi_mod_mul"
input_style = "arch_split"
arity = 2
def arguments(self) -> List[str]:
return [bignum_common.quote_str(n) for n in [self.arg_a,
self.arg_b,
self.arg_n]
] + self.result()
def result(self) -> List[str]:
result = (self.int_a * self.int_b) % self.int_n
return [self.format_result(result)]
# END MERGE SLOT 2 # END MERGE SLOT 2
# BEGIN MERGE SLOT 3 # BEGIN MERGE SLOT 3

186
tests/suites/test_suite_bignum_mod.function
View File

@@ -2,6 +2,7 @@
#include "mbedtls/bignum.h" #include "mbedtls/bignum.h"
#include "mbedtls/entropy.h" #include "mbedtls/entropy.h"
#include "bignum_mod.h" #include "bignum_mod.h"
#include "bignum_mod_raw.h"
#include "constant_time_internal.h" #include "constant_time_internal.h"
#include "test/constant_flow.h" #include "test/constant_flow.h"
@@ -102,6 +103,191 @@ exit:
/* BEGIN MERGE SLOT 2 */ /* BEGIN MERGE SLOT 2 */
/* BEGIN_CASE */
void mpi_mod_mul( char * input_A,
char * input_B,
char * input_N,
char * result )
{
mbedtls_mpi_uint *A = NULL;
mbedtls_mpi_uint *B = NULL;
mbedtls_mpi_uint *N = NULL;
mbedtls_mpi_uint *X = NULL;
mbedtls_mpi_uint *R = NULL;
size_t limbs_A;
size_t limbs_B;
size_t limbs_N;
size_t limbs_R;
mbedtls_mpi_mod_modulus m;
mbedtls_mpi_mod_modulus_init( &m );
TEST_EQUAL( mbedtls_test_read_mpi_core( &A, &limbs_A, input_A ), 0 );
TEST_EQUAL( mbedtls_test_read_mpi_core( &B, &limbs_B, input_B ), 0 );
TEST_EQUAL( mbedtls_test_read_mpi_core( &N, &limbs_N, input_N ), 0 );
TEST_EQUAL( mbedtls_test_read_mpi_core( &R, &limbs_R, result ), 0 );
const size_t limbs = limbs_N;
const size_t bytes = limbs * sizeof( mbedtls_mpi_uint );
TEST_EQUAL( limbs_A, limbs );
TEST_EQUAL( limbs_B, limbs );
TEST_EQUAL( limbs_R, limbs );
ASSERT_ALLOC( X, limbs );
TEST_EQUAL( mbedtls_mpi_mod_modulus_setup(
&m, N, limbs,
MBEDTLS_MPI_MOD_REP_MONTGOMERY ), 0 );
mbedtls_mpi_mod_residue rA;
TEST_EQUAL( mbedtls_mpi_mod_residue_setup( &rA, &m, A, limbs ), 0 );
mbedtls_mpi_mod_residue rB;
TEST_EQUAL( mbedtls_mpi_mod_residue_setup( &rB, &m, B, limbs ), 0 );
mbedtls_mpi_mod_residue rX;
TEST_EQUAL( mbedtls_mpi_mod_residue_setup( &rX, &m, X, limbs ), 0 );
/* Convert to Montgomery representation */
TEST_EQUAL( mbedtls_mpi_mod_raw_to_mont_rep( rA.p, &m ), 0 );
TEST_EQUAL( mbedtls_mpi_mod_raw_to_mont_rep( rB.p, &m ), 0 );
TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rA, &rB, &m ), 0 );
TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
ASSERT_COMPARE( rX.p, bytes, R, bytes );
/* alias X to A */
memcpy( rX.p, rA.p, bytes );
TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rX, &rB, &m ), 0 );
TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
ASSERT_COMPARE( rX.p, bytes, R, bytes );
/* alias X to B */
memcpy( rX.p, rB.p, bytes );
TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rA, &rX, &m ), 0);
TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
ASSERT_COMPARE( rX.p, bytes, R, bytes );
/* A == B: alias A and B */
if( memcmp( rA.p, rB.p, bytes ) == 0 )
{
TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rA, &rA, &m ), 0 );
TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
ASSERT_COMPARE( rX.p, bytes, R, bytes );
/* X, A, B all aliased together */
memcpy( rX.p, rA.p, bytes );
TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rX, &rX, &m ), 0 );
TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
ASSERT_COMPARE( rX.p, bytes, R, bytes );
}
/* A != B: test B * A */
else
{
TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rB, &rA, &m ), 0 );
TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
ASSERT_COMPARE( rX.p, bytes, R, bytes );
/* B * A: alias X to A */
memcpy( rX.p, rA.p, bytes );
TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rB, &rX, &m ), 0 );
TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
ASSERT_COMPARE( rX.p, bytes, R, bytes );
/* B + A: alias X to B */
memcpy( rX.p, rB.p, bytes );
TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rX, &rA, &m ), 0 );
TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
ASSERT_COMPARE( rX.p, bytes, R, bytes );
}
exit:
mbedtls_mpi_mod_residue_release( &rA );
mbedtls_mpi_mod_residue_release( &rB );
mbedtls_mpi_mod_residue_release( &rX );
mbedtls_mpi_mod_modulus_free( &m );
mbedtls_free( A );
mbedtls_free( B );
mbedtls_free( N );
mbedtls_free( X );
mbedtls_free( R );
}
/* END_CASE */
/* BEGIN_CASE */
void mpi_mod_mul_neg( char * input_A,
char * input_B,
char * input_N,
char * result,
int exp_ret )
{
mbedtls_mpi_uint *A = NULL;
mbedtls_mpi_uint *B = NULL;
mbedtls_mpi_uint *N = NULL;
mbedtls_mpi_uint *X = NULL;
mbedtls_mpi_uint *R = NULL;
size_t limbs_A = 0;
size_t limbs_B = 0;
size_t limbs_N = 0;
size_t limbs_X = 0;
mbedtls_mpi_mod_modulus m;
mbedtls_mpi_mod_modulus_init( &m );
mbedtls_mpi_mod_modulus fake_m;
mbedtls_mpi_mod_modulus_init( &fake_m );
TEST_EQUAL( mbedtls_test_read_mpi_core( &A, &limbs_A, input_A ), 0 );
TEST_EQUAL( mbedtls_test_read_mpi_core( &B, &limbs_B, input_B ), 0 );
TEST_EQUAL( mbedtls_test_read_mpi_core( &N, &limbs_N, input_N ), 0 );
TEST_EQUAL( mbedtls_test_read_mpi_core( &R, &limbs_X, result ), 0 );
ASSERT_ALLOC( X, limbs_X );
TEST_EQUAL( mbedtls_mpi_mod_modulus_setup(
&m, N, limbs_N,
MBEDTLS_MPI_MOD_REP_MONTGOMERY ), 0 );
mbedtls_mpi_mod_residue rA;
TEST_EQUAL( mbedtls_mpi_mod_residue_setup( &rA, &m, A, limbs_N ), 0 );
rA.limbs = limbs_A;
mbedtls_mpi_mod_residue rB;
TEST_EQUAL( mbedtls_mpi_mod_residue_setup( &rB, &m, B, limbs_N ), 0 );
rB.limbs = limbs_B;
mbedtls_mpi_mod_residue rX;
TEST_EQUAL( mbedtls_mpi_mod_residue_setup( &rX, &m, X, limbs_N ), 0 );
rX.limbs = limbs_X;
/* Convert to Montgomery representation */
TEST_EQUAL( mbedtls_mpi_mod_raw_to_mont_rep( rA.p, &m ), 0 );
TEST_EQUAL( mbedtls_mpi_mod_raw_to_mont_rep( rB.p, &m ), 0 );
TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rA, &rB, &m ), exp_ret );
/* Check when m is not initialized */
TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rA, &rB, &fake_m ),
MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
exit:
mbedtls_mpi_mod_residue_release( &rA );
mbedtls_mpi_mod_residue_release( &rB );
mbedtls_mpi_mod_residue_release( &rX );
mbedtls_mpi_mod_modulus_free( &m );
mbedtls_mpi_mod_modulus_free( &fake_m );
mbedtls_free( A );
mbedtls_free( B );
mbedtls_free( N );
mbedtls_free( X );
mbedtls_free( R );
}
/* END_CASE */
/* END MERGE SLOT 2 */ /* END MERGE SLOT 2 */
/* BEGIN MERGE SLOT 3 */ /* BEGIN MERGE SLOT 3 */

7
tests/suites/test_suite_bignum_mod.misc.data
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@@ -12,7 +12,14 @@ mpi_mod_setup:MBEDTLS_MPI_MOD_REP_MONTGOMERY:0
# END MERGE SLOT 1 # END MERGE SLOT 1
# BEGIN MERGE SLOT 2 # BEGIN MERGE SLOT 2
Test mpi_mod_mul #1 N->limbs != A->limbs
mpi_mod_mul_neg:"1":"00000000000000000000000000000000":"f0000000000000000000000000000000":"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
Test mpi_mod_mul #2 N->limbs != B->limbs
mpi_mod_mul_neg:"1234567890abcdef1234567890abcdef":"0":"f0000000000000000000000000000000":"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
Test mpi_mod_mul #3 N->limbs != X->limbs
mpi_mod_mul_neg:"1234567890abcdef1234567890abcdef":"00000000000000000000000000000000":"f0000000000000000000000000000000":"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
# END MERGE SLOT 2 # END MERGE SLOT 2
# BEGIN MERGE SLOT 3 # BEGIN MERGE SLOT 3