154 lines
4.3 KiB
C
154 lines
4.3 KiB
C
/*
|
|
* RSA simple data encryption program
|
|
*
|
|
* Copyright The Mbed TLS Contributors
|
|
* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
|
|
*/
|
|
|
|
#include "mbedtls/build_info.h"
|
|
|
|
#include "mbedtls/platform.h"
|
|
|
|
#if defined(MBEDTLS_BIGNUM_C) && defined(MBEDTLS_PK_PARSE_C) && \
|
|
defined(MBEDTLS_ENTROPY_C) && defined(MBEDTLS_FS_IO) && \
|
|
defined(MBEDTLS_CTR_DRBG_C)
|
|
#include "mbedtls/error.h"
|
|
#include "mbedtls/pk.h"
|
|
#include "mbedtls/entropy.h"
|
|
#include "mbedtls/ctr_drbg.h"
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#endif
|
|
|
|
#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_PK_PARSE_C) || \
|
|
!defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_FS_IO) || \
|
|
!defined(MBEDTLS_CTR_DRBG_C)
|
|
int main(void)
|
|
{
|
|
mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_PK_PARSE_C and/or "
|
|
"MBEDTLS_ENTROPY_C and/or MBEDTLS_FS_IO and/or "
|
|
"MBEDTLS_CTR_DRBG_C not defined.\n");
|
|
mbedtls_exit(0);
|
|
}
|
|
#else
|
|
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
FILE *f;
|
|
int ret = 1;
|
|
int exit_code = MBEDTLS_EXIT_FAILURE;
|
|
size_t i, olen = 0;
|
|
mbedtls_pk_context pk;
|
|
mbedtls_entropy_context entropy;
|
|
mbedtls_ctr_drbg_context ctr_drbg;
|
|
unsigned char input[1024];
|
|
unsigned char buf[512];
|
|
const char *pers = "mbedtls_pk_encrypt";
|
|
|
|
mbedtls_ctr_drbg_init(&ctr_drbg);
|
|
mbedtls_entropy_init(&entropy);
|
|
mbedtls_pk_init(&pk);
|
|
|
|
#if defined(MBEDTLS_USE_PSA_CRYPTO)
|
|
psa_status_t status = psa_crypto_init();
|
|
if (status != PSA_SUCCESS) {
|
|
mbedtls_fprintf(stderr, "Failed to initialize PSA Crypto implementation: %d\n",
|
|
(int) status);
|
|
goto exit;
|
|
}
|
|
#endif /* MBEDTLS_USE_PSA_CRYPTO */
|
|
|
|
if (argc != 3) {
|
|
mbedtls_printf("usage: mbedtls_pk_encrypt <key_file> <string of max 100 characters>\n");
|
|
|
|
#if defined(_WIN32)
|
|
mbedtls_printf("\n");
|
|
#endif
|
|
|
|
goto exit;
|
|
}
|
|
|
|
mbedtls_printf("\n . Seeding the random number generator...");
|
|
fflush(stdout);
|
|
|
|
if ((ret = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func,
|
|
&entropy, (const unsigned char *) pers,
|
|
strlen(pers))) != 0) {
|
|
mbedtls_printf(" failed\n ! mbedtls_ctr_drbg_seed returned -0x%04x\n",
|
|
(unsigned int) -ret);
|
|
goto exit;
|
|
}
|
|
|
|
mbedtls_printf("\n . Reading public key from '%s'", argv[1]);
|
|
fflush(stdout);
|
|
|
|
if ((ret = mbedtls_pk_parse_public_keyfile(&pk, argv[1])) != 0) {
|
|
mbedtls_printf(" failed\n ! mbedtls_pk_parse_public_keyfile returned -0x%04x\n",
|
|
(unsigned int) -ret);
|
|
goto exit;
|
|
}
|
|
|
|
if (strlen(argv[2]) > 100) {
|
|
mbedtls_printf(" Input data larger than 100 characters.\n\n");
|
|
goto exit;
|
|
}
|
|
|
|
memcpy(input, argv[2], strlen(argv[2]));
|
|
|
|
/*
|
|
* Calculate the RSA encryption of the hash.
|
|
*/
|
|
mbedtls_printf("\n . Generating the encrypted value");
|
|
fflush(stdout);
|
|
|
|
if ((ret = mbedtls_pk_encrypt(&pk, input, strlen(argv[2]),
|
|
buf, &olen, sizeof(buf),
|
|
mbedtls_ctr_drbg_random, &ctr_drbg)) != 0) {
|
|
mbedtls_printf(" failed\n ! mbedtls_pk_encrypt returned -0x%04x\n",
|
|
(unsigned int) -ret);
|
|
goto exit;
|
|
}
|
|
|
|
/*
|
|
* Write the signature into result-enc.txt
|
|
*/
|
|
if ((f = fopen("result-enc.txt", "wb+")) == NULL) {
|
|
mbedtls_printf(" failed\n ! Could not create %s\n\n",
|
|
"result-enc.txt");
|
|
ret = 1;
|
|
goto exit;
|
|
}
|
|
|
|
for (i = 0; i < olen; i++) {
|
|
mbedtls_fprintf(f, "%02X%s", buf[i],
|
|
(i + 1) % 16 == 0 ? "\r\n" : " ");
|
|
}
|
|
|
|
fclose(f);
|
|
|
|
mbedtls_printf("\n . Done (created \"%s\")\n\n", "result-enc.txt");
|
|
|
|
exit_code = MBEDTLS_EXIT_SUCCESS;
|
|
|
|
exit:
|
|
|
|
mbedtls_pk_free(&pk);
|
|
mbedtls_entropy_free(&entropy);
|
|
mbedtls_ctr_drbg_free(&ctr_drbg);
|
|
#if defined(MBEDTLS_USE_PSA_CRYPTO)
|
|
mbedtls_psa_crypto_free();
|
|
#endif /* MBEDTLS_USE_PSA_CRYPTO */
|
|
|
|
#if defined(MBEDTLS_ERROR_C)
|
|
if (exit_code != MBEDTLS_EXIT_SUCCESS) {
|
|
mbedtls_strerror(ret, (char *) buf, sizeof(buf));
|
|
mbedtls_printf(" ! Last error was: %s\n", buf);
|
|
}
|
|
#endif
|
|
|
|
mbedtls_exit(exit_code);
|
|
}
|
|
#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_PK_PARSE_C && MBEDTLS_ENTROPY_C &&
|
|
MBEDTLS_FS_IO && MBEDTLS_CTR_DRBG_C */
|