diff options
Diffstat (limited to 'externals/mbedtls/programs/pkey/mpi_demo.c')
| -rw-r--r-- | externals/mbedtls/programs/pkey/mpi_demo.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/externals/mbedtls/programs/pkey/mpi_demo.c b/externals/mbedtls/programs/pkey/mpi_demo.c new file mode 100644 index 0000000000..e7df64793c --- /dev/null +++ b/externals/mbedtls/programs/pkey/mpi_demo.c @@ -0,0 +1,142 @@ +/* + * Simple MPI demonstration program + * + * Copyright The Mbed TLS Contributors + * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later + * + * This file is provided under the Apache License 2.0, or the + * GNU General Public License v2.0 or later. + * + * ********** + * Apache License 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. + * + * ********** + * + * ********** + * GNU General Public License v2.0 or later: + * + * 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(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 exit +#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"); + mbedtls_exit( 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 + + mbedtls_exit( exit_code ); +} +#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_FS_IO */ |