mbedtls/tests/suites/test_suite_ecp.function

BEGIN_HEADER
#include <polarssl/ecp.h>

#define POLARSSL_ECP_PF_UNKNOWN     -1
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_sub:#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_sub( &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 );
    }

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

BEGIN_CASE
ecp_small_mul:#m_str:#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_str} ) == 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_small_check_pub:#x:#y:#z:#ret
{
    ecp_group grp;
    ecp_point P;

    ecp_group_init( &grp );
    ecp_point_init( &P );

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

    TEST_ASSERT( mpi_lset( &P.X, {x} ) == 0 );
    TEST_ASSERT( mpi_lset( &P.Y, {y} ) == 0 );
    TEST_ASSERT( mpi_lset( &P.Z, {z} ) == 0 );

    TEST_ASSERT( ecp_check_pubkey( &grp, &P ) == {ret} );

    ecp_group_free( &grp );
    ecp_point_free( &P );
}
END_CASE

BEGIN_CASE
ecp_test_vect:#id:dA_str:xA_str:yA_str:dB_str:xB_str:yB_str:xZ_str:yZ_str
{
    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, {id} ) == 0 );

    TEST_ASSERT( ecp_check_pubkey( &grp, &grp.G ) == 0 );

    TEST_ASSERT( mpi_read_string( &dA, 16, {dA_str} ) == 0 );
    TEST_ASSERT( mpi_read_string( &xA, 16, {xA_str} ) == 0 );
    TEST_ASSERT( mpi_read_string( &yA, 16, {yA_str} ) == 0 );
    TEST_ASSERT( mpi_read_string( &dB, 16, {dB_str} ) == 0 );
    TEST_ASSERT( mpi_read_string( &xB, 16, {xB_str} ) == 0 );
    TEST_ASSERT( mpi_read_string( &yB, 16, {yB_str} ) == 0 );
    TEST_ASSERT( mpi_read_string( &xZ, 16, {xZ_str} ) == 0 );
    TEST_ASSERT( mpi_read_string( &yZ, 16, {yZ_str} ) == 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_check_pubkey( &grp, &R ) == 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_check_pubkey( &grp, &R ) == 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_check_pubkey( &grp, &R ) == 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 );
    TEST_ASSERT( ecp_check_pubkey( &grp, &R ) == 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_str
{
    ecp_group grp;
    mpi N, R;

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

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

BEGIN_CASE
ecp_write_binary:#id:x:y:z:#format:out:#blen:#ret
{
    ecp_group grp;
    ecp_point P;
    unsigned char buf[256], str[512];
    size_t olen;

    memset( buf, 0, sizeof( buf ) );
    memset( str, 0, sizeof( str ) );

    ecp_group_init( &grp ); ecp_point_init( &P );

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

    TEST_ASSERT( mpi_read_string( &P.X, 16, {x} ) == 0 );
    TEST_ASSERT( mpi_read_string( &P.Y, 16, {y} ) == 0 );
    TEST_ASSERT( mpi_read_string( &P.Z, 16, {z} ) == 0 );

    TEST_ASSERT( ecp_point_write_binary( &grp, &P, {format},
                                   &olen, buf, {blen} ) == {ret} );

    if( {ret} == 0 )
    {
        hexify( str, buf, olen );
        TEST_ASSERT( strcasecmp( (char *) str, {out} ) == 0 );
    }

    ecp_group_free( &grp ); ecp_point_free( &P );
}
END_CASE

BEGIN_CASE
ecp_read_binary:#id:input:x:y:z:#ret
{
    ecp_group grp;
    ecp_point P;
    mpi X, Y, Z;
    int ilen;
    unsigned char buf[256];

    memset( buf, 0, sizeof( buf ) );

    ecp_group_init( &grp ); ecp_point_init( &P );
    mpi_init( &X ); mpi_init( &Y ); mpi_init( &Z );

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

    TEST_ASSERT( mpi_read_string( &X, 16, {x} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, 16, {y} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Z, 16, {z} ) == 0 );

    ilen = unhexify( buf, {input} );

    TEST_ASSERT( ecp_point_read_binary( &grp, &P, buf, ilen ) == {ret} );

    if( {ret} == 0 )
    {
        TEST_ASSERT( mpi_cmp_mpi( &P.X, &X ) == 0 );
        TEST_ASSERT( mpi_cmp_mpi( &P.Y, &Y ) == 0 );
        TEST_ASSERT( mpi_cmp_mpi( &P.Z, &Z ) == 0 );
    }

    ecp_group_free( &grp ); ecp_point_free( &P );
    mpi_free( &X ); mpi_free( &Y ); mpi_free( &Z );
}
END_CASE

BEGIN_CASE
ecp_tls_read_point:#id:input:x:y:z:#ret
{
    ecp_group grp;
    ecp_point P;
    mpi X, Y, Z;
    size_t ilen;
    unsigned char buf[256];
    const unsigned char *vbuf = buf;

    memset( buf, 0, sizeof( buf ) );

    ecp_group_init( &grp ); ecp_point_init( &P );
    mpi_init( &X ); mpi_init( &Y ); mpi_init( &Z );

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

    TEST_ASSERT( mpi_read_string( &X, 16, {x} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, 16, {y} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Z, 16, {z} ) == 0 );

    ilen = unhexify( buf, {input} );

    TEST_ASSERT( ecp_tls_read_point( &grp, &P, &vbuf, ilen ) == {ret} );

    if( {ret} == 0 )
    {
        TEST_ASSERT( mpi_cmp_mpi( &P.X, &X ) == 0 );
        TEST_ASSERT( mpi_cmp_mpi( &P.Y, &Y ) == 0 );
        TEST_ASSERT( mpi_cmp_mpi( &P.Z, &Z ) == 0 );
        TEST_ASSERT( *vbuf == 0x00 );
    }

    ecp_group_free( &grp ); ecp_point_free( &P );
    mpi_free( &X ); mpi_free( &Y ); mpi_free( &Z );
}
END_CASE

BEGIN_CASE
ecp_tls_write_read_point:#id
{
    ecp_group grp;
    ecp_point pt;
    unsigned char buf[256];
    const unsigned char *vbuf;
    size_t olen;

    ecp_group_init( &grp );
    ecp_point_init( &pt );

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

    memset( buf, 0x00, sizeof( buf ) ); vbuf = buf;
    TEST_ASSERT( ecp_tls_write_point( &grp, &grp.G,
                    POLARSSL_ECP_PF_COMPRESSED, &olen, buf, 256 ) == 0 );
    TEST_ASSERT( ecp_tls_read_point( &grp, &pt, &vbuf, olen )
                 == POLARSSL_ERR_ECP_BAD_INPUT_DATA );
    TEST_ASSERT( vbuf == buf + olen );

    memset( buf, 0x00, sizeof( buf ) ); vbuf = buf;
    TEST_ASSERT( ecp_tls_write_point( &grp, &grp.G,
                    POLARSSL_ECP_PF_UNCOMPRESSED, &olen, buf, 256 ) == 0 );
    TEST_ASSERT( ecp_tls_read_point( &grp, &pt, &vbuf, olen ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &grp.G.X, &pt.X ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &grp.G.Y, &pt.Y ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &grp.G.Z, &pt.Z ) == 0 );
    TEST_ASSERT( vbuf == buf + olen );

    memset( buf, 0x00, sizeof( buf ) ); vbuf = buf;
    TEST_ASSERT( ecp_set_zero( &pt ) == 0 );
    TEST_ASSERT( ecp_tls_write_point( &grp, &pt,
                    POLARSSL_ECP_PF_COMPRESSED, &olen, buf, 256 ) == 0 );
    TEST_ASSERT( ecp_tls_read_point( &grp, &pt, &vbuf, olen ) == 0 );
    TEST_ASSERT( ecp_is_zero( &pt ) );
    TEST_ASSERT( vbuf == buf + olen );

    memset( buf, 0x00, sizeof( buf ) ); vbuf = buf;
    TEST_ASSERT( ecp_set_zero( &pt ) == 0 );
    TEST_ASSERT( ecp_tls_write_point( &grp, &pt,
                    POLARSSL_ECP_PF_UNCOMPRESSED, &olen, buf, 256 ) == 0 );
    TEST_ASSERT( ecp_tls_read_point( &grp, &pt, &vbuf, olen ) == 0 );
    TEST_ASSERT( ecp_is_zero( &pt ) );
    TEST_ASSERT( vbuf == buf + olen );

    ecp_group_free( &grp );
    ecp_point_free( &pt );
}
END_CASE

BEGIN_CASE
ecp_tls_read_group:record:#result:#bits
{
    ecp_group grp;
    unsigned char buf[10];
    const unsigned char *vbuf = buf;
    int len, ret;

    ecp_group_init( &grp );
    memset( buf, 0x00, sizeof( buf ) );

    len = unhexify( buf, {record} );

    ret = ecp_tls_read_group( &grp, &vbuf, len );

    TEST_ASSERT( ret == {result} );
    if( ret == 0)
    {
        TEST_ASSERT( mpi_msb( &grp.P ) == (size_t) {bits} );
        TEST_ASSERT( *vbuf == 0x00 );
    }

    ecp_group_free( &grp );
}
END_CASE

BEGIN_CASE
ecp_tls_write_read_group:#id
{
    ecp_group grp1, grp2;
    unsigned char buf[10];
    const unsigned char *vbuf = buf;
    size_t len;
    int ret;

    ecp_group_init( &grp1 );
    ecp_group_init( &grp2 );
    memset( buf, 0x00, sizeof( buf ) );

    TEST_ASSERT( ecp_use_known_dp( &grp1, {id} ) == 0 );

    TEST_ASSERT( ecp_tls_write_group( &grp1, &len, buf, 10 ) == 0 );
    TEST_ASSERT( ( ret = ecp_tls_read_group( &grp2, &vbuf, len ) ) == 0 );

    if( ret == 0 )
    {
        TEST_ASSERT( mpi_cmp_mpi( &grp1.N, &grp2.N ) == 0 );
        TEST_ASSERT( grp1.id == grp2.id );
    }

    ecp_group_free( &grp1 );
    ecp_group_free( &grp2 );
}
END_CASE

BEGIN_CASE
ecp_check_privkey:#id
{
    ecp_group grp;
    mpi d;

    ecp_group_init( &grp );
    mpi_init( &d );

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

    TEST_ASSERT( mpi_lset( &d, 0 ) == 0 );
    TEST_ASSERT( ecp_check_privkey( &grp, &d ) == POLARSSL_ERR_ECP_GENERIC );

    TEST_ASSERT( mpi_copy( &d, &grp.N ) == 0 );
    TEST_ASSERT( ecp_check_privkey( &grp, &d ) == POLARSSL_ERR_ECP_GENERIC );

    ecp_group_free( &grp );
    mpi_free( &d );
}
END_CASE

BEGIN_CASE
ecp_gen_keypair:#id
{
    ecp_group grp;
    ecp_point Q;
    mpi d;
    rnd_pseudo_info rnd_info;

    ecp_group_init( &grp );
    ecp_point_init( &Q );
    mpi_init( &d );
    memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );

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

    TEST_ASSERT( ecp_gen_keypair( &grp, &d, &Q, &rnd_pseudo_rand, &rnd_info )
                 == 0 );

    TEST_ASSERT( ecp_check_pubkey( &grp, &Q ) == 0 );
    TEST_ASSERT( ecp_check_privkey( &grp, &d ) == 0 );

    ecp_group_free( &grp );
    ecp_point_free( &Q );
    mpi_free( &d );
}
END_CASE

BEGIN_CASE
ecp_selftest:
{
    TEST_ASSERT( ecp_self_test( 0 ) == 0 );
}
END_CASE