mbedtls/tests/suites/test_suite_mpi.function

BEGIN_HEADER
#include <polarssl/bignum.h>
END_HEADER

BEGIN_DEPENDENCIES
depends_on:POLARSSL_BIGNUM_C
END_DEPENDENCIES

BEGIN_CASE
mpi_read_write_string:#radix_X:input_X:#radix_A:input_A:#output_size:#result_read:#result_write
{
    mpi X;
    char str[1000];
    size_t len = {output_size};

    mpi_init( &X );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == {result_read} );
    if( {result_read} == 0 )
    {
        TEST_ASSERT( mpi_write_string( &X, {radix_A}, str, &len ) == {result_write} );
        if( {result_write} == 0 )
        {
            TEST_ASSERT( strcasecmp( str, {input_A} ) == 0 );
        }
    }

    mpi_free( &X );
}
END_CASE

BEGIN_CASE
mpi_read_binary:input_X:#radix_A:input_A
{
    mpi X;
    unsigned char str[1000];
    unsigned char buf[1000];
    size_t len = 1000;
    size_t input_len;

    mpi_init( &X );

    input_len = unhexify( buf, {input_X} );

    TEST_ASSERT( mpi_read_binary( &X, buf, input_len ) == 0 );
    TEST_ASSERT( mpi_write_string( &X, {radix_A}, (char *) str, &len ) == 0 );
    TEST_ASSERT( strcmp( (char *) str, {input_A} ) == 0 );

    mpi_free( &X );
}
END_CASE

BEGIN_CASE
mpi_write_binary:#radix_X:input_X:input_A:#output_size:#result
{
    mpi X;
    unsigned char str[1000];
    unsigned char buf[1000];
    size_t buflen;

    memset( buf, 0x00, 1000 );
    memset( str, 0x00, 1000 );

    mpi_init( &X );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    
    buflen = mpi_size( &X );
    if( buflen > (size_t) {output_size} )
        buflen = (size_t) {output_size};

    TEST_ASSERT( mpi_write_binary( &X, buf, buflen ) == {result} );
    if( {result} == 0)
    {
        hexify( str, buf, buflen );

        TEST_ASSERT( strcasecmp( (char *) str, {input_A} ) == 0 );
    }

    mpi_free( &X );
}
END_CASE

BEGIN_CASE
mpi_read_file:#radix_X:input_file:input_A:#result
{
    mpi X;
    unsigned char str[1000];
    unsigned char buf[1000];
    size_t buflen;
    FILE *file;

    memset( buf, 0x00, 1000 );
    memset( str, 0x00, 1000 );

    mpi_init( &X );

    file = fopen( {input_file}, "r" );
    TEST_ASSERT( mpi_read_file( &X, {radix_X}, file ) == {result} );
    fclose(file);

    if( {result} == 0 )
    {
        buflen = mpi_size( &X );
        TEST_ASSERT( mpi_write_binary( &X, buf, buflen ) == 0 );

        hexify( str, buf, buflen );

        TEST_ASSERT( strcasecmp( (char *) str, {input_A} ) == 0 );
    }

    mpi_free( &X );
}
END_CASE

BEGIN_CASE
mpi_write_file:#radix_X:input_X:#output_radix:output_file
{
    mpi X, Y;
    FILE *file_out, *file_in;

    mpi_init( &X ); mpi_init( &Y );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );

    file_out = fopen( {output_file}, "w" );
    TEST_ASSERT( file_out != NULL );
    TEST_ASSERT( mpi_write_file( NULL, &X, {output_radix}, file_out ) == 0 );
    fclose(file_out);

    file_in = fopen( {output_file}, "r" );
    TEST_ASSERT( file_in != NULL );
    TEST_ASSERT( mpi_read_file( &Y, {output_radix}, file_in ) == 0 );
    fclose(file_in);

    TEST_ASSERT( mpi_cmp_mpi( &X, &Y ) == 0 );

    mpi_free( &X ); mpi_free( &Y );
}
END_CASE

BEGIN_CASE
mpi_get_bit:#radix_X:input_X:#pos:#val
{
    mpi X;
    mpi_init( &X );
    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_get_bit( &X, {pos} ) == {val} );

    mpi_free( &X );
}
END_CASE

BEGIN_CASE
mpi_set_bit:#radix_X:input_X:#pos:#val:#radix_Y:output_Y
{
    mpi X, Y;
    mpi_init( &X ); mpi_init( &Y );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, {radix_Y}, {output_Y} ) == 0 );
    TEST_ASSERT( mpi_set_bit( &X, {pos}, {val} ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &X, &Y ) == 0 );

    mpi_free( &X ); mpi_free( &Y );
}
END_CASE

BEGIN_CASE
mpi_lsb:#radix_X:input_X:#nr_bits
{
    mpi X;
    mpi_init( &X );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_lsb( &X ) == (size_t) {nr_bits} );

    mpi_free( &X );
}
END_CASE

BEGIN_CASE
mpi_msb:#radix_X:input_X:#nr_bits
{
    mpi X;
    mpi_init( &X );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_msb( &X ) == (size_t) {nr_bits} );

    mpi_free( &X );
}
END_CASE

BEGIN_CASE
mpi_gcd:#radix_X:input_X:#radix_Y:input_Y:#radix_A:input_A
{
    mpi A, X, Y, Z;
    mpi_init( &A ); mpi_init( &X ); mpi_init( &Y ); mpi_init( &Z );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, {radix_Y}, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_gcd( &Z, &X, &Y ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &Z, &A ) == 0 );

    mpi_free( &A ); mpi_free( &X ); mpi_free( &Y ); mpi_free( &Z );
}
END_CASE

BEGIN_CASE
mpi_cmp_int:#input_X:#input_A:#result_CMP
{
    mpi X;
    mpi_init( &X  );

    TEST_ASSERT( mpi_lset( &X, {input_X} ) == 0);
    TEST_ASSERT( mpi_cmp_int( &X, {input_A} ) == {result_CMP});

    mpi_free( &X );
}
END_CASE

BEGIN_CASE
mpi_cmp_mpi:#radix_X:input_X:#radix_Y:input_Y:#input_A
{
    mpi X, Y;
    mpi_init( &X ); mpi_init( &Y );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, {radix_Y}, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &X, &Y ) == {input_A} );

    mpi_free( &X ); mpi_free( &Y );
}
END_CASE

BEGIN_CASE
mpi_cmp_abs:#radix_X:input_X:#radix_Y:input_Y:#input_A
{
    mpi X, Y;
    mpi_init( &X ); mpi_init( &Y );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, {radix_Y}, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_cmp_abs( &X, &Y ) == {input_A} );

    mpi_free( &X ); mpi_free( &Y );
}
END_CASE

BEGIN_CASE
mpi_copy:#input_X:#input_A
{
    mpi X, Y, A;
    mpi_init( &X ); mpi_init( &Y ); mpi_init( &A );

    TEST_ASSERT( mpi_lset( &X, {input_X} ) == 0 );
    TEST_ASSERT( mpi_lset( &Y, {input_A} ) == 0 );
    TEST_ASSERT( mpi_lset( &A, {input_A} ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &X, &Y ) != 0 );
    TEST_ASSERT( mpi_cmp_mpi( &Y, &A ) == 0 );
    TEST_ASSERT( mpi_copy( &Y, &X ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &X, &Y ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &Y, &A ) != 0 );

    mpi_free( &X ); mpi_free( &Y ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_copy_self:#input_X
{
    mpi X;
    mpi_init( &X );

    TEST_ASSERT( mpi_lset( &X, {input_X} ) == 0 );
    TEST_ASSERT( mpi_copy( &X, &X ) == 0 );
    TEST_ASSERT( mpi_cmp_int( &X, {input_X} ) == 0 );

    mpi_free( &X );
}
END_CASE

BEGIN_CASE
mpi_swap:#input_X:#input_Y
{
    mpi X, Y, A;
    mpi_init( &X ); mpi_init( &Y ); mpi_init( &A );

    TEST_ASSERT( mpi_lset( &X, {input_X} ) == 0 );
    TEST_ASSERT( mpi_lset( &Y, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_lset( &A, {input_X} ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &X, &Y ) != 0 );
    TEST_ASSERT( mpi_cmp_mpi( &X, &A ) == 0 );
    mpi_swap( &X, &Y );
    TEST_ASSERT( mpi_cmp_mpi( &X, &Y ) != 0 );
    TEST_ASSERT( mpi_cmp_mpi( &Y, &A ) == 0 );

    mpi_free( &X ); mpi_free( &Y ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_add_mpi:#radix_X:input_X:#radix_Y:input_Y:#radix_A:input_A
{
    mpi X, Y, Z, A;
    mpi_init( &X ); mpi_init( &Y ); mpi_init( &Z ); mpi_init( &A );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, {radix_Y}, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_add_mpi( &Z, &X, &Y ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &Z, &A ) == 0 );

    mpi_free( &X ); mpi_free( &Y ); mpi_free( &Z ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_add_abs:#radix_X:input_X:#radix_Y:input_Y:#radix_A:input_A
{
    mpi X, Y, Z, A;
    mpi_init( &X ); mpi_init( &Y ); mpi_init( &Z ); mpi_init( &A );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, {radix_Y}, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_add_abs( &Z, &X, &Y ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &Z, &A ) == 0 );

    mpi_free( &X ); mpi_free( &Y ); mpi_free( &Z ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_add_abs_add_first:#radix_X:input_X:#radix_Y:input_Y:#radix_A:input_A
{
    mpi X, Y, A;
    mpi_init( &X ); mpi_init( &Y ); mpi_init( &A );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, {radix_Y}, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_add_abs( &X, &X, &Y ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &X, &A ) == 0 );

    mpi_free( &X ); mpi_free( &Y ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_add_abs_add_second:#radix_X:input_X:#radix_Y:input_Y:#radix_A:input_A
{
    mpi X, Y, A;
    mpi_init( &X ); mpi_init( &Y ); mpi_init( &A );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, {radix_Y}, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_add_abs( &Y, &X, &Y ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &Y, &A ) == 0 );

    mpi_free( &X ); mpi_free( &Y ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_add_int:#radix_X:input_X:#input_Y:#radix_A:input_A
{
    mpi X, Z, A;
    mpi_init( &X ); mpi_init( &Z ); mpi_init( &A );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_add_int( &Z, &X, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &Z, &A ) == 0 );

    mpi_free( &X ); mpi_free( &Z ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_sub_mpi:#radix_X:input_X:#radix_Y:input_Y:#radix_A:input_A
{
    mpi X, Y, Z, A;
    mpi_init( &X ); mpi_init( &Y ); mpi_init( &Z ); mpi_init( &A );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, {radix_Y}, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_sub_mpi( &Z, &X, &Y ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &Z, &A ) == 0 );

    mpi_free( &X ); mpi_free( &Y ); mpi_free( &Z ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_sub_abs:#radix_X:input_X:#radix_Y:input_Y:#radix_A:input_A:#sub_result
{
    mpi X, Y, Z, A;
    int res;
    mpi_init( &X ); mpi_init( &Y ); mpi_init( &Z ); mpi_init( &A );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, {radix_Y}, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    
    res = mpi_sub_abs( &Z, &X, &Y );
    TEST_ASSERT( res == {sub_result} );
    if( res == 0 )
        TEST_ASSERT( mpi_cmp_mpi( &Z, &A ) == 0 );

    mpi_free( &X ); mpi_free( &Y ); mpi_free( &Z ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_sub_int:#radix_X:input_X:#input_Y:#radix_A:input_A
{
    mpi X, Z, A;
    mpi_init( &X ); mpi_init( &Z ); mpi_init( &A );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_sub_int( &Z, &X, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &Z, &A ) == 0 );

    mpi_free( &X ); mpi_free( &Z ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_mul_mpi:#radix_X:input_X:#radix_Y:input_Y:#radix_A:input_A
{
    mpi X, Y, Z, A;
    mpi_init( &X ); mpi_init( &Y ); mpi_init( &Z ); mpi_init( &A );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, {radix_Y}, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_mul_mpi( &Z, &X, &Y ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &Z, &A ) == 0 );

    mpi_free( &X ); mpi_free( &Y ); mpi_free( &Z ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_mul_int:#radix_X:input_X:#input_Y:#radix_A:input_A:result_comparison
{
    mpi X, Z, A;
    mpi_init( &X ); mpi_init( &Z ); mpi_init( &A );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_mul_int( &Z, &X, {input_Y} ) == 0 );
    if( strcmp( result_comparison, "==" ) == 0 )
        TEST_ASSERT( mpi_cmp_mpi( &Z, &A ) == 0 );
    else if( strcmp( result_comparison, "!=" ) == 0 )
        TEST_ASSERT( mpi_cmp_mpi( &Z, &A ) != 0 );
    else
        TEST_ASSERT( "unknown operator" == 0 );

    mpi_free( &X ); mpi_free( &Z ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_div_mpi:#radix_X:input_X:#radix_Y:input_Y:#radix_A:input_A:#radix_B:input_B:#div_result
{
    mpi X, Y, Q, R, A, B;
    int res;
    mpi_init( &X ); mpi_init( &Y ); mpi_init( &Q ); mpi_init( &R );
    mpi_init( &A ); mpi_init( &B );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, {radix_Y}, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_read_string( &B, {radix_B}, {input_B} ) == 0 );
    res = mpi_div_mpi( &Q, &R, &X, &Y );
    TEST_ASSERT( res == {div_result} );
    if( res == 0 )
    {
        TEST_ASSERT( mpi_cmp_mpi( &Q, &A ) == 0 );
        TEST_ASSERT( mpi_cmp_mpi( &R, &B ) == 0 );
    }

    mpi_free( &X ); mpi_free( &Y ); mpi_free( &Q ); mpi_free( &R );
    mpi_free( &A ); mpi_free( &B );
}
END_CASE

BEGIN_CASE
mpi_div_int:#radix_X:input_X:#input_Y:#radix_A:input_A:#radix_B:input_B:#div_result
{
    mpi X, Q, R, A, B;
    int res;
    mpi_init( &X ); mpi_init( &Q ); mpi_init( &R ); mpi_init( &A );
    mpi_init( &B );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_read_string( &B, {radix_B}, {input_B} ) == 0 );
    res = mpi_div_int( &Q, &R, &X, {input_Y} );
    TEST_ASSERT( res == {div_result} );
    if( res == 0 )
    {
        TEST_ASSERT( mpi_cmp_mpi( &Q, &A ) == 0 );
        TEST_ASSERT( mpi_cmp_mpi( &R, &B ) == 0 );
    }

    mpi_free( &X ); mpi_free( &Q ); mpi_free( &R ); mpi_free( &A );
    mpi_free( &B );
}
END_CASE

BEGIN_CASE
mpi_mod_mpi:#radix_X:input_X:#radix_Y:input_Y:#radix_A:input_A:#div_result
{
    mpi X, Y, A;
    int res;
    mpi_init( &X ); mpi_init( &Y ); mpi_init( &A );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, {radix_Y}, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    res = mpi_mod_mpi( &X, &X, &Y );
    TEST_ASSERT( res == {div_result} );
    if( res == 0 )
    {
        TEST_ASSERT( mpi_cmp_mpi( &X, &A ) == 0 );
    }

    mpi_free( &X ); mpi_free( &Y ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_mod_int:#radix_X:input_X:#input_Y:#input_A:#div_result
{
    mpi X;
    int res;
    t_uint r;
    mpi_init( &X );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    res = mpi_mod_int( &r, &X, {input_Y} );
    TEST_ASSERT( res == {div_result} );
    if( res == 0 )
    {
        TEST_ASSERT( r == (t_uint) {input_A} );
    }

    mpi_free( &X );
}
END_CASE

BEGIN_CASE
mpi_exp_mod:#radix_A:input_A:#radix_E:input_E:#radix_N:input_N:#radix_RR:input_RR:#radix_X:input_X:#div_result
{
    mpi A, E, N, RR, Z, X;
    int res;
    mpi_init( &A  ); mpi_init( &E ); mpi_init( &N );
    mpi_init( &RR ); mpi_init( &Z ); mpi_init( &X );

    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_read_string( &E, {radix_E}, {input_E} ) == 0 );
    TEST_ASSERT( mpi_read_string( &N, {radix_N}, {input_N} ) == 0 );
    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );

    if( strlen( {input_RR} ) )
        TEST_ASSERT( mpi_read_string( &RR, {radix_RR}, {input_RR} ) == 0 );

    res = mpi_exp_mod( &Z, &A, &E, &N, &RR );
    TEST_ASSERT( res == {div_result} );
    if( res == 0 )
    {
        TEST_ASSERT( mpi_cmp_mpi( &Z, &X ) == 0 );
    }

    mpi_free( &A  ); mpi_free( &E ); mpi_free( &N );
    mpi_free( &RR ); mpi_free( &Z ); mpi_free( &X );
}
END_CASE

BEGIN_CASE
mpi_inv_mod:#radix_X:input_X:#radix_Y:input_Y:#radix_A:input_A:#div_result
{
    mpi X, Y, Z, A;
    int res;
    mpi_init( &X ); mpi_init( &Y ); mpi_init( &Z ); mpi_init( &A );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &Y, {radix_Y}, {input_Y} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    res = mpi_inv_mod( &Z, &X, &Y );
    TEST_ASSERT( res == {div_result} );
    if( res == 0 )
    {
        TEST_ASSERT( mpi_cmp_mpi( &Z, &A ) == 0 );
    }

    mpi_free( &X ); mpi_free( &Y ); mpi_free( &Z ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_is_prime:#radix_X:input_X:#div_result
{
    mpi X;
    int res;
    mpi_init( &X );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    res = mpi_is_prime( &X, rnd_std_rand, NULL );
    TEST_ASSERT( res == {div_result} );

    mpi_free( &X );
}
END_CASE

BEGIN_CASE
mpi_shift_l:#radix_X:input_X:#shift_X:#radix_A:input_A
{
    mpi X, A;
    mpi_init( &X ); mpi_init( &A );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_shift_l( &X, {shift_X} ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &X, &A ) == 0 );

    mpi_free( &X ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_shift_r:#radix_X:input_X:#shift_X:#radix_A:input_A
{
    mpi X, A;
    mpi_init( &X ); mpi_init( &A );

    TEST_ASSERT( mpi_read_string( &X, {radix_X}, {input_X} ) == 0 );
    TEST_ASSERT( mpi_read_string( &A, {radix_A}, {input_A} ) == 0 );
    TEST_ASSERT( mpi_shift_r( &X, {shift_X} ) == 0 );
    TEST_ASSERT( mpi_cmp_mpi( &X, &A ) == 0 );

    mpi_free( &X ); mpi_free( &A );
}
END_CASE

BEGIN_CASE
mpi_selftest:
{
    TEST_ASSERT( mpi_self_test( 0 ) == 0 );
}
END_CASE
/* Helper Code
    char str[1000];
    int len = 1000;
    mpi_write_string(&Z, 10, str, &len);
    printf("Z: %d %s\n", Z.s, str);
    TEST_ASSERT( mpi_cmp_mpi( &Z, &A ) == 0 );
*/