mirror of
https://github.com/yuzu-emu/mbedtls
synced 2024-11-24 23:08:11 +00:00
105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
/*
|
|
* Simple MPI demonstration program
|
|
*
|
|
* Copyright (C) 2006-2011, ARM Limited, All Rights Reserved
|
|
*
|
|
* This file is part of mbed TLS (https://polarssl.org)
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#if !defined(POLARSSL_CONFIG_FILE)
|
|
#include "polarssl/config.h"
|
|
#else
|
|
#include POLARSSL_CONFIG_FILE
|
|
#endif
|
|
|
|
#if defined(POLARSSL_PLATFORM_C)
|
|
#include "polarssl/platform.h"
|
|
#else
|
|
#define polarssl_printf printf
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "polarssl/bignum.h"
|
|
|
|
#if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_FS_IO)
|
|
int main( int argc, char *argv[] )
|
|
{
|
|
((void) argc);
|
|
((void) argv);
|
|
|
|
polarssl_printf("POLARSSL_BIGNUM_C and/or POLARSSL_FS_IO not defined.\n");
|
|
return( 0 );
|
|
}
|
|
#else
|
|
int main( int argc, char *argv[] )
|
|
{
|
|
mpi E, P, Q, N, H, D, X, Y, Z;
|
|
|
|
((void) argc);
|
|
((void) argv);
|
|
|
|
mpi_init( &E ); mpi_init( &P ); mpi_init( &Q ); mpi_init( &N );
|
|
mpi_init( &H ); mpi_init( &D ); mpi_init( &X ); mpi_init( &Y );
|
|
mpi_init( &Z );
|
|
|
|
mpi_read_string( &P, 10, "2789" );
|
|
mpi_read_string( &Q, 10, "3203" );
|
|
mpi_read_string( &E, 10, "257" );
|
|
mpi_mul_mpi( &N, &P, &Q );
|
|
|
|
polarssl_printf( "\n Public key:\n\n" );
|
|
mpi_write_file( " N = ", &N, 10, NULL );
|
|
mpi_write_file( " E = ", &E, 10, NULL );
|
|
|
|
polarssl_printf( "\n Private key:\n\n" );
|
|
mpi_write_file( " P = ", &P, 10, NULL );
|
|
mpi_write_file( " Q = ", &Q, 10, NULL );
|
|
|
|
#if defined(POLARSSL_GENPRIME)
|
|
mpi_sub_int( &P, &P, 1 );
|
|
mpi_sub_int( &Q, &Q, 1 );
|
|
mpi_mul_mpi( &H, &P, &Q );
|
|
mpi_inv_mod( &D, &E, &H );
|
|
|
|
mpi_write_file( " D = E^-1 mod (P-1)*(Q-1) = ",
|
|
&D, 10, NULL );
|
|
#else
|
|
polarssl_printf("\nTest skipped (POLARSSL_GENPRIME not defined).\n\n");
|
|
#endif
|
|
mpi_read_string( &X, 10, "55555" );
|
|
mpi_exp_mod( &Y, &X, &E, &N, NULL );
|
|
mpi_exp_mod( &Z, &Y, &D, &N, NULL );
|
|
|
|
polarssl_printf( "\n RSA operation:\n\n" );
|
|
mpi_write_file( " X (plaintext) = ", &X, 10, NULL );
|
|
mpi_write_file( " Y (ciphertext) = X^E mod N = ", &Y, 10, NULL );
|
|
mpi_write_file( " Z (decrypted) = Y^D mod N = ", &Z, 10, NULL );
|
|
polarssl_printf( "\n" );
|
|
|
|
mpi_free( &E ); mpi_free( &P ); mpi_free( &Q ); mpi_free( &N );
|
|
mpi_free( &H ); mpi_free( &D ); mpi_free( &X ); mpi_free( &Y );
|
|
mpi_free( &Z );
|
|
|
|
#if defined(_WIN32)
|
|
polarssl_printf( " Press Enter to exit this program.\n" );
|
|
fflush( stdout ); getchar();
|
|
#endif
|
|
|
|
return( 0 );
|
|
}
|
|
#endif /* POLARSSL_BIGNUM_C && POLARSSL_FS_IO */
|