tests/suites/test_suite_ecp.function

BEGIN_HEADER
#include <polarssl/ecp.h>
END_HEADER

BEGIN_DEPENDENCIES
depends_on:POLARSSL_ECP_C:POLARSSL_BIGNUM_C
END_DEPENDENCIES

BEGIN_CASE
ecp_small_add:a_zero:x_a:y_a:b_zero:x_b:y_b:c_zero:x_c:y_c
{
    ecp_group grp;
    ecp_point A, B, C;

    ecp_group_init( &grp );
    ecp_point_init( &A ); ecp_point_init( &B ); ecp_point_init( &C );

    TEST_ASSERT( ecp_group_read_string( &grp, 10,
                "47", "4", "17", "42", "13" ) == 0 );

    if( {a_zero} )
        ecp_set_zero( &A );
    else
        TEST_ASSERT( ecp_point_read_string( &A, 10, {x_a}, {y_a} ) == 0 );

    if( {b_zero} )
        ecp_set_zero( &B );
    else
        TEST_ASSERT( ecp_point_read_string( &B, 10, {x_b}, {y_b} ) == 0 );

    TEST_ASSERT( ecp_add( &grp, &C, &A, &B ) == 0 );

    if( {c_zero} )
        TEST_ASSERT( mpi_cmp_int( &C.Z, 0 ) == 0 );
    else
    {
        TEST_ASSERT( mpi_cmp_int( &C.X, {x_c} ) == 0 );
        TEST_ASSERT( mpi_cmp_int( &C.Y, {y_c} ) == 0 );
    }

    TEST_ASSERT( ecp_add( &grp, &C, &B, &A ) == 0 );

    if( {c_zero} )
        TEST_ASSERT( mpi_cmp_int( &C.Z, 0 ) == 0 );
    else
    {
        TEST_ASSERT( mpi_cmp_int( &C.X, {x_c} ) == 0 );
        TEST_ASSERT( mpi_cmp_int( &C.Y, {y_c} ) == 0 );
    }

    ecp_group_free( &grp );
    ecp_point_free( &A ); ecp_point_free( &B ); ecp_point_free( &C );
}
END_CASE

BEGIN_CASE
ecp_small_mul:m:r_zero:x_r:y_r:ret
{
    ecp_group grp;
    ecp_point R;
    mpi m;

    ecp_group_init( &grp );
    ecp_point_init( &R );
    mpi_init( &m );

    TEST_ASSERT( ecp_group_read_string( &grp, 10,
                "47", "4", "17", "42", "13" ) == 0 );

    TEST_ASSERT( mpi_lset( &m, {m} ) == 0 );

    TEST_ASSERT( ecp_mul( &grp, &R, &m, &grp.G ) == {ret} );

    if( {r_zero} )
        TEST_ASSERT( mpi_cmp_int( &R.Z, 0 ) == 0 );
    else
    {
        TEST_ASSERT( mpi_cmp_int( &R.X, {x_r} ) == 0 );
        TEST_ASSERT( mpi_cmp_int( &R.Y, {y_r} ) == 0 );
    }

    ecp_group_free( &grp );
    ecp_point_free( &R );
    mpi_free( &m );
}
END_CASE

BEGIN_CASE
ecp_test_vect:id:dA:xA:yA:dB:xB:yB:xZ:yZ
{
    ecp_group grp;
    ecp_point R;
    mpi dA, xA, yA, dB, xB, yB, xZ, yZ;

    ecp_group_init( &grp ); ecp_point_init( &R );
    mpi_init( &dA ); mpi_init( &xA ); mpi_init( &yA ); mpi_init( &dB );
    mpi_init( &xB ); mpi_init( &yB ); mpi_init( &xZ ); mpi_init( &yZ );

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

    TEST_ASSERT( mpi_read_string( &dA, 16, {dA} ) == 0 );
    TEST_ASSERT( mpi_read_string( &xA, 16, {xA} ) == 0 );
    TEST_ASSERT( mpi_read_string( &yA, 16, {yA} ) == 0 );
    TEST_ASSERT( mpi_read_string( &dB, 16, {dB} ) == 0 );
    TEST_ASSERT( mpi_read_string( &xB, 16, {xB} ) == 0 );
    TEST_ASSERT( mpi_read_string( &yB, 16, {yB} ) == 0 );
    TEST_ASSERT( mpi_read_string( &xZ, 16, {xZ} ) == 0 );
    TEST_ASSERT( mpi_read_string( &yZ, 16, {yZ} ) == 0 );

    TEST_ASSERT( ecp_mul( &grp, &R, &dA, &grp.G ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &R.X, &xA ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &R.Y, &yA ) == 0 );
    TEST_ASSERT( ecp_mul( &grp, &R, &dB, &R ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &R.X, &xZ ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &R.Y, &yZ ) == 0 );

    TEST_ASSERT( ecp_mul( &grp, &R, &dB, &grp.G ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &R.X, &xB ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &R.Y, &yB ) == 0 );
    TEST_ASSERT( ecp_mul( &grp, &R, &dA, &R ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &R.X, &xZ ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &R.Y, &yZ ) == 0 );

    ecp_group_free( &grp ); ecp_point_free( &R );
    mpi_free( &dA ); mpi_free( &xA ); mpi_free( &yA ); mpi_free( &dB );
    mpi_free( &xB ); mpi_free( &yB ); mpi_free( &xZ ); mpi_free( &yZ );
}
END_CASE

BEGIN_CASE
ecp_fast_mod:id:N
{
    ecp_group grp;
    mpi N, R;

    mpi_init( &N ); mpi_init( &R );
    ecp_group_init( &grp );

    TEST_ASSERT( ecp_use_known_dp( &grp, POLARSSL_ECP_DP_{id} ) == 0 );
    TEST_ASSERT( mpi_read_string( &N, 16, {N} ) == 0 );

    /*
     * Store correct result before we touch N
     */
    TEST_ASSERT( mpi_mod_mpi( &R, &N, &grp.P ) == 0 );

    TEST_ASSERT( grp.modp( &N ) == 0 );
    TEST_ASSERT( mpi_msb( &N ) <= grp.pbits + 3 );

    /*
     * Use mod rather than addition/substraction in case previous test fails
     */
    TEST_ASSERT( mpi_mod_mpi( &N, &N, &grp.P ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &N, &R ) == 0 );

    mpi_free( &N ); mpi_free( &R );
    ecp_group_free( &grp );
}
END_CASE