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Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2023-01-11 14:52:35 +01:00
parent 480f683d15
commit 1b6c09a62e
391 changed files with 73134 additions and 75084 deletions
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156
programs/pkey/rsa_decrypt.c
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@@ -39,17 +39,17 @@
#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_RSA_C) || \
!defined(MBEDTLS_FS_IO) || !defined(MBEDTLS_ENTROPY_C) || \
!defined(MBEDTLS_CTR_DRBG_C)
int main( void )
int main(void)
{
mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_RSA_C and/or "
"MBEDTLS_FS_IO and/or MBEDTLS_ENTROPY_C and/or "
"MBEDTLS_CTR_DRBG_C not defined.\n");
mbedtls_exit( 0 );
"MBEDTLS_FS_IO and/or MBEDTLS_ENTROPY_C and/or "
"MBEDTLS_CTR_DRBG_C not defined.\n");
mbedtls_exit(0);
}
#else
int main( int argc, char *argv[] )
int main(int argc, char *argv[])
{
FILE *f;
int ret = 1;
@@ -65,137 +65,129 @@ int main( int argc, char *argv[] )
const char *pers = "rsa_decrypt";
((void) argv);
memset(result, 0, sizeof( result ) );
memset(result, 0, sizeof(result));
if( argc != 1 )
{
mbedtls_printf( "usage: rsa_decrypt\n" );
if (argc != 1) {
mbedtls_printf("usage: rsa_decrypt\n");
#if defined(_WIN32)
mbedtls_printf( "\n" );
mbedtls_printf("\n");
#endif
mbedtls_exit( exit_code );
mbedtls_exit(exit_code);
}
mbedtls_printf( "\n . Seeding the random number generator..." );
fflush( stdout );
mbedtls_printf("\n . Seeding the random number generator...");
fflush(stdout);
mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, 0 );
mbedtls_ctr_drbg_init( &ctr_drbg );
mbedtls_entropy_init( &entropy );
mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q );
mbedtls_mpi_init( &D ); mbedtls_mpi_init( &E ); mbedtls_mpi_init( &DP );
mbedtls_mpi_init( &DQ ); mbedtls_mpi_init( &QP );
mbedtls_rsa_init(&rsa, MBEDTLS_RSA_PKCS_V15, 0);
mbedtls_ctr_drbg_init(&ctr_drbg);
mbedtls_entropy_init(&entropy);
mbedtls_mpi_init(&N); mbedtls_mpi_init(&P); mbedtls_mpi_init(&Q);
mbedtls_mpi_init(&D); mbedtls_mpi_init(&E); mbedtls_mpi_init(&DP);
mbedtls_mpi_init(&DQ); mbedtls_mpi_init(&QP);
ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func,
&entropy, (const unsigned char *) pers,
strlen( pers ) );
if( ret != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned %d\n",
ret );
ret = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func,
&entropy, (const unsigned char *) pers,
strlen(pers));
if (ret != 0) {
mbedtls_printf(" failed\n ! mbedtls_ctr_drbg_seed returned %d\n",
ret);
goto exit;
}
mbedtls_printf( "\n . Reading private key from rsa_priv.txt" );
fflush( stdout );
mbedtls_printf("\n . Reading private key from rsa_priv.txt");
fflush(stdout);
if( ( f = fopen( "rsa_priv.txt", "rb" ) ) == NULL )
{
mbedtls_printf( " failed\n ! Could not open rsa_priv.txt\n" \
" ! Please run rsa_genkey first\n\n" );
if ((f = fopen("rsa_priv.txt", "rb")) == NULL) {
mbedtls_printf(" failed\n ! Could not open rsa_priv.txt\n" \
" ! Please run rsa_genkey first\n\n");
goto exit;
}
if( ( ret = mbedtls_mpi_read_file( &N , 16, f ) ) != 0 ||
( ret = mbedtls_mpi_read_file( &E , 16, f ) ) != 0 ||
( ret = mbedtls_mpi_read_file( &D , 16, f ) ) != 0 ||
( ret = mbedtls_mpi_read_file( &P , 16, f ) ) != 0 ||
( ret = mbedtls_mpi_read_file( &Q , 16, f ) ) != 0 ||
( ret = mbedtls_mpi_read_file( &DP , 16, f ) ) != 0 ||
( ret = mbedtls_mpi_read_file( &DQ , 16, f ) ) != 0 ||
( ret = mbedtls_mpi_read_file( &QP , 16, f ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_mpi_read_file returned %d\n\n",
ret );
fclose( f );
if ((ret = mbedtls_mpi_read_file(&N, 16, f)) != 0 ||
(ret = mbedtls_mpi_read_file(&E, 16, f)) != 0 ||
(ret = mbedtls_mpi_read_file(&D, 16, f)) != 0 ||
(ret = mbedtls_mpi_read_file(&P, 16, f)) != 0 ||
(ret = mbedtls_mpi_read_file(&Q, 16, f)) != 0 ||
(ret = mbedtls_mpi_read_file(&DP, 16, f)) != 0 ||
(ret = mbedtls_mpi_read_file(&DQ, 16, f)) != 0 ||
(ret = mbedtls_mpi_read_file(&QP, 16, f)) != 0) {
mbedtls_printf(" failed\n ! mbedtls_mpi_read_file returned %d\n\n",
ret);
fclose(f);
goto exit;
}
fclose( f );
fclose(f);
if( ( ret = mbedtls_rsa_import( &rsa, &N, &P, &Q, &D, &E ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_rsa_import returned %d\n\n",
ret );
if ((ret = mbedtls_rsa_import(&rsa, &N, &P, &Q, &D, &E)) != 0) {
mbedtls_printf(" failed\n ! mbedtls_rsa_import returned %d\n\n",
ret);
goto exit;
}
if( ( ret = mbedtls_rsa_complete( &rsa ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_rsa_complete returned %d\n\n",
ret );
if ((ret = mbedtls_rsa_complete(&rsa)) != 0) {
mbedtls_printf(" failed\n ! mbedtls_rsa_complete returned %d\n\n",
ret);
goto exit;
}
/*
* Extract the RSA encrypted value from the text file
*/
if( ( f = fopen( "result-enc.txt", "rb" ) ) == NULL )
{
mbedtls_printf( "\n ! Could not open %s\n\n", "result-enc.txt" );
if ((f = fopen("result-enc.txt", "rb")) == NULL) {
mbedtls_printf("\n ! Could not open %s\n\n", "result-enc.txt");
goto exit;
}
i = 0;
while( fscanf( f, "%02X", (unsigned int*) &c ) > 0 &&
i < (int) sizeof( buf ) )
while (fscanf(f, "%02X", (unsigned int *) &c) > 0 &&
i < (int) sizeof(buf)) {
buf[i++] = (unsigned char) c;
}
fclose( f );
fclose(f);
if( i != rsa.len )
{
mbedtls_printf( "\n ! Invalid RSA signature format\n\n" );
if (i != rsa.len) {
mbedtls_printf("\n ! Invalid RSA signature format\n\n");
goto exit;
}
/*
* Decrypt the encrypted RSA data and print the result.
*/
mbedtls_printf( "\n . Decrypting the encrypted data" );
fflush( stdout );
mbedtls_printf("\n . Decrypting the encrypted data");
fflush(stdout);
ret = mbedtls_rsa_pkcs1_decrypt( &rsa, mbedtls_ctr_drbg_random,
&ctr_drbg, MBEDTLS_RSA_PRIVATE, &i,
buf, result, 1024 );
if( ret != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_rsa_pkcs1_decrypt returned %d\n\n",
ret );
ret = mbedtls_rsa_pkcs1_decrypt(&rsa, mbedtls_ctr_drbg_random,
&ctr_drbg, MBEDTLS_RSA_PRIVATE, &i,
buf, result, 1024);
if (ret != 0) {
mbedtls_printf(" failed\n ! mbedtls_rsa_pkcs1_decrypt returned %d\n\n",
ret);
goto exit;
}
mbedtls_printf( "\n . OK\n\n" );
mbedtls_printf("\n . OK\n\n");
mbedtls_printf( "The decrypted result is: '%s'\n\n", result );
mbedtls_printf("The decrypted result is: '%s'\n\n", result);
exit_code = MBEDTLS_EXIT_SUCCESS;
exit:
mbedtls_ctr_drbg_free( &ctr_drbg );
mbedtls_entropy_free( &entropy );
mbedtls_rsa_free( &rsa );
mbedtls_mpi_free( &N ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q );
mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E ); mbedtls_mpi_free( &DP );
mbedtls_mpi_free( &DQ ); mbedtls_mpi_free( &QP );
mbedtls_ctr_drbg_free(&ctr_drbg);
mbedtls_entropy_free(&entropy);
mbedtls_rsa_free(&rsa);
mbedtls_mpi_free(&N); mbedtls_mpi_free(&P); mbedtls_mpi_free(&Q);
mbedtls_mpi_free(&D); mbedtls_mpi_free(&E); mbedtls_mpi_free(&DP);
mbedtls_mpi_free(&DQ); mbedtls_mpi_free(&QP);
#if defined(_WIN32)
mbedtls_printf( " + Press Enter to exit this program.\n" );
fflush( stdout ); getchar();
mbedtls_printf(" + Press Enter to exit this program.\n");
fflush(stdout); getchar();
#endif
mbedtls_exit( exit_code );
mbedtls_exit(exit_code);
}
#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_RSA_C && MBEDTLS_FS_IO */