mirror of
https://github.com/Mbed-TLS/mbedtls.git
synced 2025-02-04 15:39:53 +00:00
Add tests for mod_mul
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
This commit is contained in:
Gabor Mezei
parent
9db81e9cca
commit
eca74668c7
@ -31,6 +31,25 @@ class BignumModTarget(test_data_generation.BaseTarget):
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# BEGIN MERGE SLOT 2
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class BignumModMul(bignum_common.ModOperationCommon,
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BignumModTarget):
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"""Test cases for bignum mpi_mod_mul()."""
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symbol = "*"
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test_function = "mpi_mod_mul"
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test_name = "mbedtls_mpi_mod_mul"
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input_style = "arch_split"
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arity = 2
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def arguments(self) -> List[str]:
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return [bignum_common.quote_str(n) for n in [self.arg_a,
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self.arg_b,
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self.arg_n]
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] + self.result()
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def result(self) -> List[str]:
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result = (self.int_a * self.int_b) % self.int_n
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return [self.format_result(result)]
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# END MERGE SLOT 2
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# BEGIN MERGE SLOT 3
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@ -2,6 +2,7 @@
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#include "mbedtls/bignum.h"
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#include "mbedtls/entropy.h"
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#include "bignum_mod.h"
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#include "bignum_mod_raw.h"
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#include "constant_time_internal.h"
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#include "test/constant_flow.h"
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@ -102,6 +103,191 @@ exit:
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/* BEGIN MERGE SLOT 2 */
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/* BEGIN_CASE */
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void mpi_mod_mul( char * input_A,
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char * input_B,
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char * input_N,
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char * result )
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{
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mbedtls_mpi_uint *A = NULL;
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mbedtls_mpi_uint *B = NULL;
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mbedtls_mpi_uint *N = NULL;
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mbedtls_mpi_uint *X = NULL;
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mbedtls_mpi_uint *R = NULL;
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size_t limbs_A;
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size_t limbs_B;
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size_t limbs_N;
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size_t limbs_R;
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mbedtls_mpi_mod_modulus m;
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mbedtls_mpi_mod_modulus_init( &m );
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TEST_EQUAL( mbedtls_test_read_mpi_core( &A, &limbs_A, input_A ), 0 );
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TEST_EQUAL( mbedtls_test_read_mpi_core( &B, &limbs_B, input_B ), 0 );
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TEST_EQUAL( mbedtls_test_read_mpi_core( &N, &limbs_N, input_N ), 0 );
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TEST_EQUAL( mbedtls_test_read_mpi_core( &R, &limbs_R, result ), 0 );
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const size_t limbs = limbs_N;
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const size_t bytes = limbs * sizeof( mbedtls_mpi_uint );
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TEST_EQUAL( limbs_A, limbs );
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TEST_EQUAL( limbs_B, limbs );
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TEST_EQUAL( limbs_R, limbs );
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ASSERT_ALLOC( X, limbs );
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TEST_EQUAL( mbedtls_mpi_mod_modulus_setup(
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&m, N, limbs,
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MBEDTLS_MPI_MOD_REP_MONTGOMERY ), 0 );
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mbedtls_mpi_mod_residue rA;
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TEST_EQUAL( mbedtls_mpi_mod_residue_setup( &rA, &m, A, limbs ), 0 );
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mbedtls_mpi_mod_residue rB;
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TEST_EQUAL( mbedtls_mpi_mod_residue_setup( &rB, &m, B, limbs ), 0 );
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mbedtls_mpi_mod_residue rX;
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TEST_EQUAL( mbedtls_mpi_mod_residue_setup( &rX, &m, X, limbs ), 0 );
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/* Convert to Montgomery representation */
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TEST_EQUAL( mbedtls_mpi_mod_raw_to_mont_rep( rA.p, &m ), 0 );
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TEST_EQUAL( mbedtls_mpi_mod_raw_to_mont_rep( rB.p, &m ), 0 );
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TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rA, &rB, &m ), 0 );
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TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
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ASSERT_COMPARE( rX.p, bytes, R, bytes );
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/* alias X to A */
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memcpy( rX.p, rA.p, bytes );
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TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rX, &rB, &m ), 0 );
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TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
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ASSERT_COMPARE( rX.p, bytes, R, bytes );
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/* alias X to B */
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memcpy( rX.p, rB.p, bytes );
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TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rA, &rX, &m ), 0);
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TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
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ASSERT_COMPARE( rX.p, bytes, R, bytes );
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/* A == B: alias A and B */
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if( memcmp( rA.p, rB.p, bytes ) == 0 )
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{
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TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rA, &rA, &m ), 0 );
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TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
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ASSERT_COMPARE( rX.p, bytes, R, bytes );
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/* X, A, B all aliased together */
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memcpy( rX.p, rA.p, bytes );
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TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rX, &rX, &m ), 0 );
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TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
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ASSERT_COMPARE( rX.p, bytes, R, bytes );
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}
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/* A != B: test B * A */
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else
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{
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TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rB, &rA, &m ), 0 );
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TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
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ASSERT_COMPARE( rX.p, bytes, R, bytes );
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/* B * A: alias X to A */
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memcpy( rX.p, rA.p, bytes );
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TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rB, &rX, &m ), 0 );
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TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
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ASSERT_COMPARE( rX.p, bytes, R, bytes );
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/* B + A: alias X to B */
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memcpy( rX.p, rB.p, bytes );
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TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rX, &rA, &m ), 0 );
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TEST_EQUAL( mbedtls_mpi_mod_raw_from_mont_rep( rX.p, &m ), 0 );
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ASSERT_COMPARE( rX.p, bytes, R, bytes );
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}
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exit:
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mbedtls_mpi_mod_residue_release( &rA );
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mbedtls_mpi_mod_residue_release( &rB );
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mbedtls_mpi_mod_residue_release( &rX );
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mbedtls_mpi_mod_modulus_free( &m );
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mbedtls_free( A );
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mbedtls_free( B );
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mbedtls_free( N );
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mbedtls_free( X );
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mbedtls_free( R );
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}
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/* END_CASE */
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/* BEGIN_CASE */
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void mpi_mod_mul_neg( char * input_A,
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char * input_B,
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char * input_N,
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char * result,
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int exp_ret )
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{
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mbedtls_mpi_uint *A = NULL;
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mbedtls_mpi_uint *B = NULL;
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mbedtls_mpi_uint *N = NULL;
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mbedtls_mpi_uint *X = NULL;
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mbedtls_mpi_uint *R = NULL;
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size_t limbs_A = 0;
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size_t limbs_B = 0;
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size_t limbs_N = 0;
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size_t limbs_X = 0;
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mbedtls_mpi_mod_modulus m;
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mbedtls_mpi_mod_modulus_init( &m );
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mbedtls_mpi_mod_modulus fake_m;
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mbedtls_mpi_mod_modulus_init( &fake_m );
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TEST_EQUAL( mbedtls_test_read_mpi_core( &A, &limbs_A, input_A ), 0 );
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TEST_EQUAL( mbedtls_test_read_mpi_core( &B, &limbs_B, input_B ), 0 );
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TEST_EQUAL( mbedtls_test_read_mpi_core( &N, &limbs_N, input_N ), 0 );
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TEST_EQUAL( mbedtls_test_read_mpi_core( &R, &limbs_X, result ), 0 );
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ASSERT_ALLOC( X, limbs_X );
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TEST_EQUAL( mbedtls_mpi_mod_modulus_setup(
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&m, N, limbs_N,
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MBEDTLS_MPI_MOD_REP_MONTGOMERY ), 0 );
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mbedtls_mpi_mod_residue rA;
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TEST_EQUAL( mbedtls_mpi_mod_residue_setup( &rA, &m, A, limbs_N ), 0 );
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rA.limbs = limbs_A;
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mbedtls_mpi_mod_residue rB;
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TEST_EQUAL( mbedtls_mpi_mod_residue_setup( &rB, &m, B, limbs_N ), 0 );
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rB.limbs = limbs_B;
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mbedtls_mpi_mod_residue rX;
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TEST_EQUAL( mbedtls_mpi_mod_residue_setup( &rX, &m, X, limbs_N ), 0 );
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rX.limbs = limbs_X;
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/* Convert to Montgomery representation */
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TEST_EQUAL( mbedtls_mpi_mod_raw_to_mont_rep( rA.p, &m ), 0 );
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TEST_EQUAL( mbedtls_mpi_mod_raw_to_mont_rep( rB.p, &m ), 0 );
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TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rA, &rB, &m ), exp_ret );
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/* Check when m is not initialized */
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TEST_EQUAL( mbedtls_mpi_mod_mul( &rX, &rA, &rB, &fake_m ),
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MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
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exit:
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mbedtls_mpi_mod_residue_release( &rA );
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mbedtls_mpi_mod_residue_release( &rB );
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mbedtls_mpi_mod_residue_release( &rX );
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mbedtls_mpi_mod_modulus_free( &m );
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mbedtls_mpi_mod_modulus_free( &fake_m );
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mbedtls_free( A );
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mbedtls_free( B );
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mbedtls_free( N );
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mbedtls_free( X );
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mbedtls_free( R );
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}
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/* END_CASE */
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/* END MERGE SLOT 2 */
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/* BEGIN MERGE SLOT 3 */
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@ -12,7 +12,14 @@ mpi_mod_setup:MBEDTLS_MPI_MOD_REP_MONTGOMERY:0
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# END MERGE SLOT 1
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# BEGIN MERGE SLOT 2
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Test mpi_mod_mul #1 N->limbs != A->limbs
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mpi_mod_mul_neg:"1":"00000000000000000000000000000000":"f0000000000000000000000000000000":"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
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Test mpi_mod_mul #2 N->limbs != B->limbs
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mpi_mod_mul_neg:"1234567890abcdef1234567890abcdef":"0":"f0000000000000000000000000000000":"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
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Test mpi_mod_mul #3 N->limbs != X->limbs
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mpi_mod_mul_neg:"1234567890abcdef1234567890abcdef":"00000000000000000000000000000000":"f0000000000000000000000000000000":"0":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
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# END MERGE SLOT 2
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# BEGIN MERGE SLOT 3
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