mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-11-24 04:05:49 +01:00
115 lines
3.9 KiB
C
115 lines
3.9 KiB
C
/*
|
|
* Simple MPI demonstration program
|
|
*
|
|
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
* not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
* This file is part of mbed TLS (https://tls.mbed.org)
|
|
*/
|
|
|
|
#if !defined(MBEDTLS_CONFIG_FILE)
|
|
#include "mbedtls/config.h"
|
|
#else
|
|
#include MBEDTLS_CONFIG_FILE
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_PLATFORM_C)
|
|
#include "mbedtls/platform.h"
|
|
#else
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#define mbedtls_printf printf
|
|
#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
|
|
#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
|
|
#endif /* MBEDTLS_PLATFORM_C */
|
|
|
|
#if defined(MBEDTLS_BIGNUM_C) && defined(MBEDTLS_FS_IO)
|
|
#include "mbedtls/bignum.h"
|
|
|
|
#include <stdio.h>
|
|
#endif
|
|
|
|
#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_FS_IO)
|
|
int main( void )
|
|
{
|
|
mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_FS_IO not defined.\n");
|
|
return( 0 );
|
|
}
|
|
#else
|
|
int main( void )
|
|
{
|
|
int ret = 1;
|
|
int exit_code = MBEDTLS_EXIT_FAILURE;
|
|
mbedtls_mpi E, P, Q, N, H, D, X, Y, Z;
|
|
|
|
mbedtls_mpi_init( &E ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q ); mbedtls_mpi_init( &N );
|
|
mbedtls_mpi_init( &H ); mbedtls_mpi_init( &D ); mbedtls_mpi_init( &X ); mbedtls_mpi_init( &Y );
|
|
mbedtls_mpi_init( &Z );
|
|
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &P, 10, "2789" ) );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &Q, 10, "3203" ) );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &E, 10, "257" ) );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &N, &P, &Q ) );
|
|
|
|
mbedtls_printf( "\n Public key:\n\n" );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_write_file( " N = ", &N, 10, NULL ) );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_write_file( " E = ", &E, 10, NULL ) );
|
|
|
|
mbedtls_printf( "\n Private key:\n\n" );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_write_file( " P = ", &P, 10, NULL ) );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_write_file( " Q = ", &Q, 10, NULL ) );
|
|
|
|
#if defined(MBEDTLS_GENPRIME)
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &P, &P, 1 ) );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &Q, &Q, 1 ) );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_mul_mpi( &H, &P, &Q ) );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_inv_mod( &D, &E, &H ) );
|
|
|
|
mbedtls_mpi_write_file( " D = E^-1 mod (P-1)*(Q-1) = ",
|
|
&D, 10, NULL );
|
|
#else
|
|
mbedtls_printf("\nTest skipped (MBEDTLS_GENPRIME not defined).\n\n");
|
|
#endif
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &X, 10, "55555" ) );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &Y, &X, &E, &N, NULL ) );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_exp_mod( &Z, &Y, &D, &N, NULL ) );
|
|
|
|
mbedtls_printf( "\n RSA operation:\n\n" );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_write_file( " X (plaintext) = ", &X, 10, NULL ) );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_write_file( " Y (ciphertext) = X^E mod N = ", &Y, 10, NULL ) );
|
|
MBEDTLS_MPI_CHK( mbedtls_mpi_write_file( " Z (decrypted) = Y^D mod N = ", &Z, 10, NULL ) );
|
|
mbedtls_printf( "\n" );
|
|
|
|
exit_code = MBEDTLS_EXIT_SUCCESS;
|
|
|
|
cleanup:
|
|
mbedtls_mpi_free( &E ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q ); mbedtls_mpi_free( &N );
|
|
mbedtls_mpi_free( &H ); mbedtls_mpi_free( &D ); mbedtls_mpi_free( &X ); mbedtls_mpi_free( &Y );
|
|
mbedtls_mpi_free( &Z );
|
|
|
|
if( exit_code != MBEDTLS_EXIT_SUCCESS )
|
|
{
|
|
mbedtls_printf( "\nAn error occurred.\n" );
|
|
}
|
|
|
|
#if defined(_WIN32)
|
|
mbedtls_printf( " Press Enter to exit this program.\n" );
|
|
fflush( stdout ); getchar();
|
|
#endif
|
|
|
|
return( exit_code );
|
|
}
|
|
#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_FS_IO */
|