tests/suites/test_suite_ecdh.function

BEGIN_HEADER
#include <polarssl/ecdh.h>
END_HEADER

BEGIN_DEPENDENCIES
depends_on:POLARSSL_ECDH_C:POLARSSL_ECP_C:POLARSSL_BIGNUM_C
END_DEPENDENCIES

BEGIN_CASE
ecdh_primitive_random:id
{
    ecp_group grp;
    ecp_point qA, qB;
    mpi dA, dB, zA, zB;
    rnd_pseudo_info rnd_info;

    ecp_group_init( &grp );
    ecp_point_init( &qA ); ecp_point_init( &qB );
    mpi_init( &dA ); mpi_init( &dB );
    mpi_init( &zA ); mpi_init( &zB );
    memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );

    TEST_ASSERT( ecp_use_known_dp( &grp, POLARSSL_ECP_DP_{id} ) == 0 );

    TEST_ASSERT( ecdh_gen_public( &grp, &dA, &qA, &rnd_pseudo_rand, &rnd_info )
                 == 0 );
    TEST_ASSERT( ecdh_gen_public( &grp, &dB, &qB, &rnd_pseudo_rand, &rnd_info )
                 == 0 );
    TEST_ASSERT( ecdh_compute_shared( &grp, &zA, &qB, &dA ) == 0 );
    TEST_ASSERT( ecdh_compute_shared( &grp, &zB, &qA, &dB ) == 0 );

    TEST_ASSERT( mpi_cmp_mpi( &zA, &zB ) == 0 );

    ecp_group_free( &grp );
    ecp_point_free( &qA ); ecp_point_free( &qB );
    mpi_free( &dA ); mpi_free( &dB );
    mpi_free( &zA ); mpi_free( &zB );
}
END_CASE

BEGIN_CASE
ecdh_primitive_testvec:id:dA:xA:yA:dB:xB:yB:z
{
    ecp_group grp;
    ecp_point qA, qB;
    mpi dA, dB, zA, zB, check;

    ecp_group_init( &grp );
    ecp_point_init( &qA ); ecp_point_init( &qB );
    mpi_init( &dA ); mpi_init( &dB );
    mpi_init( &zA ); mpi_init( &zB ); mpi_init( &check );

    TEST_ASSERT( ecp_use_known_dp( &grp, POLARSSL_ECP_DP_{id} ) == 0 );

    TEST_ASSERT( ecdh_gen_public( &grp, &dA, &qA, &not_rnd, "{dA}" ) == 0 );
    TEST_ASSERT( ! ecp_is_zero( &qA ) );
    TEST_ASSERT( mpi_read_string( &check, 16, "{xA}" ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &qA.X, &check ) == 0 );
    TEST_ASSERT( mpi_read_string( &check, 16, "{yA}" ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &qA.Y, &check ) == 0 );

    TEST_ASSERT( ecdh_gen_public( &grp, &dB, &qB, &not_rnd, "{dB}" ) == 0 );
    TEST_ASSERT( ! ecp_is_zero( &qB ) );
    TEST_ASSERT( mpi_read_string( &check, 16, "{xB}" ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &qB.X, &check ) == 0 );
    TEST_ASSERT( mpi_read_string( &check, 16, "{yB}" ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &qB.Y, &check ) == 0 );

    TEST_ASSERT( mpi_read_string( &check, 16, "{z}" ) == 0 );
    TEST_ASSERT( ecdh_compute_shared( &grp, &zA, &qB, &dA ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &zA, &check ) == 0 );
    TEST_ASSERT( ecdh_compute_shared( &grp, &zB, &qA, &dB ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &zB, &check ) == 0 );

    ecp_group_free( &grp );
    ecp_point_free( &qA ); ecp_point_free( &qB );
    mpi_free( &dA ); mpi_free( &dB );
    mpi_free( &zA ); mpi_free( &zB ); mpi_free( &check );
}
END_CASE