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Add missing f_rng/p_rng arguments to x509write_crt

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Manuel Pégourié-Gonnard 2013-09-12 05:59:05 +02:00 committed by Paul Bakker
parent 53c642504e
commit 31e59400d2
5 changed files with 85 additions and 28 deletions
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22
include/polarssl/x509write.h
View file

@ -373,11 +373,20 @@ void x509write_crt_free( x509write_cert *ctx );
* \param crt certificate to write away * \param crt certificate to write away
* \param buf buffer to write to * \param buf buffer to write to
* \param size size of the buffer * \param size size of the buffer
* \param f_rng RNG function (for signature, see note)
* \param p_rng RNG parameter
* *
* \return length of data written if successful, or a specific * \return length of data written if successful, or a specific
* error code * error code
*
* \note f_rng may be NULL if RSA is used for signature and the
* signature is made offline (otherwise f_rng is desirable
* for countermeasures against timing attacks).
* ECDSA signatures always require a non-NULL f_rng.
*/ */
int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size ); int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng );
/** /**
* \brief Write a public key to a DER structure * \brief Write a public key to a DER structure
@ -441,10 +450,19 @@ int x509write_csr_der( x509write_csr *ctx, unsigned char *buf, size_t size,
* \param crt certificate to write away * \param crt certificate to write away
* \param buf buffer to write to * \param buf buffer to write to
* \param size size of the buffer * \param size size of the buffer
* \param f_rng RNG function (for signature, see note)
* \param p_rng RNG parameter
* *
* \return 0 successful, or a specific error code * \return 0 successful, or a specific error code
*
* \note f_rng may be NULL if RSA is used for signature and the
* signature is made offline (otherwise f_rng is desirable
* for countermeasures against timing attacks).
* ECDSA signatures always require a non-NULL f_rng.
*/ */
int x509write_crt_pem( x509write_cert *ctx, unsigned char *buf, size_t size ); int x509write_crt_pem( x509write_cert *ctx, unsigned char *buf, size_t size,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng );
/** /**
* \brief Write a public key to a PEM string * \brief Write a public key to a PEM string

14
library/x509write.c
View file

@ -905,7 +905,9 @@ int x509write_csr_der( x509write_csr *ctx, unsigned char *buf, size_t size,
return( len ); return( len );
} }
int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size ) int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng )
{ {
int ret; int ret;
const char *sig_oid; const char *sig_oid;
@ -1007,7 +1009,7 @@ int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size )
md( md_info_from_type( ctx->md_alg ), c, len, hash ); md( md_info_from_type( ctx->md_alg ), c, len, hash );
if( ( ret = pk_sign( ctx->issuer_key, ctx->md_alg, hash, 0, sig, &sig_len, if( ( ret = pk_sign( ctx->issuer_key, ctx->md_alg, hash, 0, sig, &sig_len,
NULL, NULL ) ) != 0 ) f_rng, p_rng ) ) != 0 )
{ {
return( ret ); return( ret );
} }
@ -1083,13 +1085,15 @@ static int x509write_pemify( const char *begin_str, const char *end_str,
return( 0 ); return( 0 );
} }
int x509write_crt_pem( x509write_cert *crt, unsigned char *buf, size_t size ) int x509write_crt_pem( x509write_cert *crt, unsigned char *buf, size_t size,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng )
{ {
int ret; int ret;
unsigned char output_buf[4096]; unsigned char output_buf[4096];
if( ( ret = x509write_crt_der( crt, output_buf, if( ( ret = x509write_crt_der( crt, output_buf, sizeof(output_buf),
sizeof(output_buf) ) ) < 0 ) f_rng, p_rng ) ) < 0 )
{ {
return( ret ); return( ret );
} }

12
programs/x509/cert_req.c
View file

@ -34,19 +34,21 @@
#include "polarssl/config.h" #include "polarssl/config.h"
#include "polarssl/x509write.h" #include "polarssl/x509write.h"
#include "polarssl/error.h"
#include "polarssl/entropy.h" #include "polarssl/entropy.h"
#include "polarssl/ctr_drbg.h" #include "polarssl/ctr_drbg.h"
#include "polarssl/error.h"
#if !defined(POLARSSL_X509_PARSE_C) || !defined(POLARSSL_FS_IO) || \ #if !defined(POLARSSL_X509_WRITE_C) || !defined(POLARSSL_X509_PARSE_C) || \
!defined(POLARSSL_ENTROPY_C) || !defined(POLARSSL_CTR_DRBG_C) || \ !defined(POLARSSL_FS_IO) || \
!defined(POLARSSL_ENTROPY_C) || !defined(POLARSSL_CTR_DRBG_C) || \
!defined(POLARSSL_ERROR_C) !defined(POLARSSL_ERROR_C)
int main( int argc, char *argv[] ) int main( int argc, char *argv[] )
{ {
((void) argc); ((void) argc);
((void) argv); ((void) argv);
printf( "POLARSSL_X509_PARSE_C and/or POLARSSL_FS_IO and/or " printf( "POLARSSL_X509_WRITE_C and/or POLARSSL_X509_PARSE_C and/or "
"POLARSSL_FS_IO and/or "
"POLARSSL_ENTROPY_C and/or POLARSSL_CTR_DRBG_C and/or " "POLARSSL_ENTROPY_C and/or POLARSSL_CTR_DRBG_C and/or "
"POLARSSL_ERROR_C not defined.\n"); "POLARSSL_ERROR_C not defined.\n");
return( 0 ); return( 0 );
@ -333,6 +335,6 @@ exit:
return( ret ); return( ret );
} }
#endif /* POLARSSL_X509_PARSE_C && POLARSSL_FS_IO && #endif /* POLARSSL_X509_WRITE_C && POLARSSL_X509_PARSE_C && POLARSSL_FS_IO &&
POLARSSL_ENTROPY_C && POLARSSL_CTR_DRBG_C && POLARSSL_ENTROPY_C && POLARSSL_CTR_DRBG_C &&
POLARSSL_ERROR_C */ POLARSSL_ERROR_C */

60
programs/x509/cert_write.c
View file

@ -33,24 +33,24 @@
#include "polarssl/config.h" #include "polarssl/config.h"
#include "polarssl/error.h"
#include "polarssl/rsa.h"
#include "polarssl/x509.h"
#include "polarssl/base64.h"
#include "polarssl/x509write.h" #include "polarssl/x509write.h"
#include "polarssl/oid.h" #include "polarssl/entropy.h"
#include "polarssl/ctr_drbg.h"
#include "polarssl/error.h"
#if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_RSA_C) || \ #if !defined(POLARSSL_X509_WRITE_C) || !defined(POLARSSL_X509_PARSE_C) || \
!defined(POLARSSL_X509_WRITE_C) || !defined(POLARSSL_FS_IO) || \ !defined(POLARSSL_FS_IO) || \
!defined(POLARSSL_ENTROPY_C) || !defined(POLARSSL_CTR_DRBG_C) || \
!defined(POLARSSL_ERROR_C) !defined(POLARSSL_ERROR_C)
int main( int argc, char *argv[] ) int main( int argc, char *argv[] )
{ {
((void) argc); ((void) argc);
((void) argv); ((void) argv);
printf("POLARSSL_BIGNUM_C and/or POLARSSL_RSA_C and/or " printf( "POLARSSL_X509_WRITE_C and/or POLARSSL_X509_PARSE_C and/or "
"POLARSSL_X509_WRITE_C and/or POLARSSL_FS_IO and/or " "POLARSSL_FS_IO and/or "
"POLARSSL_ERROR_C not defined.\n"); "POLARSSL_ENTROPY_C and/or POLARSSL_CTR_DRBG_C and/or "
"POLARSSL_ERROR_C not defined.\n");
return( 0 ); return( 0 );
} }
#else #else
@ -97,7 +97,9 @@ struct options
unsigned char ns_cert_type; /* NS cert type */ unsigned char ns_cert_type; /* NS cert type */
} opt; } opt;
int write_certificate( x509write_cert *crt, char *output_file ) int write_certificate( x509write_cert *crt, char *output_file,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng )
{ {
int ret; int ret;
FILE *f; FILE *f;
@ -105,7 +107,7 @@ int write_certificate( x509write_cert *crt, char *output_file )
size_t len = 0; size_t len = 0;
memset( output_buf, 0, 4096 ); memset( output_buf, 0, 4096 );
if( ( ret = x509write_crt_pem( crt, output_buf, 4096 ) ) < 0 ) if( ( ret = x509write_crt_pem( crt, output_buf, 4096, f_rng, p_rng ) ) < 0 )
return( ret ); return( ret );
len = strlen( (char *) output_buf ); len = strlen( (char *) output_buf );
@ -183,6 +185,9 @@ int main( int argc, char *argv[] )
x509_csr csr; x509_csr csr;
x509write_cert crt; x509write_cert crt;
mpi serial; mpi serial;
entropy_context entropy;
ctr_drbg_context ctr_drbg;
const char *pers = "crt example app";
/* /*
* Set to sane values * Set to sane values
@ -350,8 +355,29 @@ int main( int argc, char *argv[] )
printf("\n"); printf("\n");
/*
* 0. Seed the PRNG
*/
printf( " . Seeding the random number generator..." );
fflush( stdout );
entropy_init( &entropy );
if( ( ret = ctr_drbg_init( &ctr_drbg, entropy_func, &entropy,
(const unsigned char *) pers,
strlen( pers ) ) ) != 0 )
{
error_strerror( ret, buf, 1024 );
printf( " failed\n ! ctr_drbg_init returned %d - %s\n", ret, buf );
goto exit;
}
printf( " ok\n" );
// Parse serial to MPI // Parse serial to MPI
// //
printf( " . Reading serial number..." );
fflush( stdout );
if( ( ret = mpi_read_string( &serial, 10, opt.serial ) ) != 0 ) if( ( ret = mpi_read_string( &serial, 10, opt.serial ) ) != 0 )
{ {
error_strerror( ret, buf, 1024 ); error_strerror( ret, buf, 1024 );
@ -359,6 +385,8 @@ int main( int argc, char *argv[] )
goto exit; goto exit;
} }
printf( " ok\n" );
// Parse issuer certificate if present // Parse issuer certificate if present
// //
if( !opt.selfsign && strlen( opt.issuer_crt ) ) if( !opt.selfsign && strlen( opt.issuer_crt ) )
@ -597,7 +625,8 @@ int main( int argc, char *argv[] )
printf( " . Writing the certificate..." ); printf( " . Writing the certificate..." );
fflush( stdout ); fflush( stdout );
if( ( ret = write_certificate( &crt, opt.output_file ) ) != 0 ) if( ( ret = write_certificate( &crt, opt.output_file,
ctr_drbg_random, &ctr_drbg ) ) != 0 )
{ {
error_strerror( ret, buf, 1024 ); error_strerror( ret, buf, 1024 );
printf( " failed\n ! write_certifcate -0x%02x - %s\n\n", -ret, buf ); printf( " failed\n ! write_certifcate -0x%02x - %s\n\n", -ret, buf );
@ -619,5 +648,6 @@ exit:
return( ret ); return( ret );
} }
#endif /* POLARSSL_BIGNUM_C && POLARSSL_RSA_C && #endif /* POLARSSL_X509_WRITE_C && POLARSSL_X509_PARSE_C && POLARSSL_FS_IO &&
POLARSSet_serial_X509_WRITE_C && POLARSSL_FS_IO */ POLARSSL_ENTROPY_C && POLARSSL_CTR_DRBG_C &&
POLARSSL_ERROR_C */

5
tests/suites/test_suite_x509write.function
View file

@ -76,7 +76,9 @@ void x509_crt_check( char *subject_key_file, char *subject_pwd,
int ret; int ret;
size_t olen = sizeof( check_buf ); size_t olen = sizeof( check_buf );
FILE *f; FILE *f;
rnd_pseudo_info rnd_info;
memset( &rnd_info, 0x2a, sizeof( rnd_pseudo_info ) );
mpi_init( &serial ); mpi_init( &serial );
pk_init( &subject_key ); pk_init( &subject_key );
pk_init( &issuer_key ); pk_init( &issuer_key );
@ -101,7 +103,8 @@ void x509_crt_check( char *subject_key_file, char *subject_pwd,
TEST_ASSERT( x509write_crt_set_subject_key_identifier( &crt ) == 0 ); TEST_ASSERT( x509write_crt_set_subject_key_identifier( &crt ) == 0 );
TEST_ASSERT( x509write_crt_set_authority_key_identifier( &crt ) == 0 ); TEST_ASSERT( x509write_crt_set_authority_key_identifier( &crt ) == 0 );
ret = x509write_crt_der( &crt, buf, sizeof(buf) ); ret = x509write_crt_der( &crt, buf, sizeof(buf),
rnd_pseudo_rand, &rnd_info );
TEST_ASSERT( ret >= 0 ); TEST_ASSERT( ret >= 0 );
c = buf + sizeof( buf ) - ret; c = buf + sizeof( buf ) - ret;