Base X509 certificate writing functinality
diff --git a/include/polarssl/x509write.h b/include/polarssl/x509write.h
index 0e443ee..8600b42 100644
--- a/include/polarssl/x509write.h
+++ b/include/polarssl/x509write.h
@@ -84,6 +84,31 @@
}
x509_csr;
+#define X509_CRT_VERSION_1 0
+#define X509_CRT_VERSION_2 1
+#define X509_CRT_VERSION_3 2
+
+#define X509_RFC5280_MAX_SERIAL_LEN 32
+#define X509_RFC5280_UTC_TIME_LEN 15
+
+/**
+ * Container for writing a certificate (CRT)
+ */
+typedef struct _x509write_cert
+{
+ int version;
+ mpi serial;
+ rsa_context *subject_key;
+ rsa_context *issuer_key;
+ x509_req_name *subject;
+ x509_req_name *issuer;
+ md_type_t md_alg;
+ char not_before[X509_RFC5280_UTC_TIME_LEN + 1];
+ char not_after[X509_RFC5280_UTC_TIME_LEN + 1];
+ asn1_named_data *extensions;
+}
+x509write_cert;
+
/* \} addtogroup x509_module */
/**
@@ -170,6 +195,125 @@
void x509write_csr_free( x509_csr *ctx );
/**
+ * \brief Initialize a CRT writing context
+ *
+ * \param ctx CRT context to initialize
+ */
+void x509write_crt_init( x509write_cert *ctx );
+
+/**
+ * \brief Set the verion for a Certificate
+ * Default: X509_CRT_VERSION_3
+ *
+ * \param ctx CRT context to use
+ * \param version version to set (X509_CRT_VERSION_1, X509_CRT_VERSION_2 or
+ * X509_CRT_VERSION_3)
+ */
+void x509write_crt_set_version( x509write_cert *ctx, int version );
+
+/**
+ * \brief Set the serial number for a Certificate.
+ *
+ * \param ctx CRT context to use
+ * \param serial serial number to set
+ *
+ * \return 0 if successful
+ */
+int x509write_crt_set_serial( x509write_cert *ctx, const mpi *serial );
+
+/**
+ * \brief Set the validity period for a Certificate
+ * Timestamps should be in string format for UTC timezone
+ * i.e. "YYYYMMDDhhmmss"
+ * e.g. "20131231235959" for December 31st 2013
+ * at 23:59:59
+ *
+ * \param ctx CRT context to use
+ * \param not_before not_before timestamp
+ * \param not_after not_after timestamp
+ *
+ * \return 0 if timestamp was parsed successfully, or
+ * a specific error code
+ */
+int x509write_crt_set_validity( x509write_cert *ctx, char *not_before,
+ char *not_after );
+
+/**
+ * \brief Set the issuer name for a Certificate
+ * Issuer names should contain a comma-separated list
+ * of OID types and values:
+ * e.g. "C=NL,O=Offspark,CN=PolarSSL CA"
+ *
+ * \param ctx CRT context to use
+ * \param issuer_name issuer name to set
+ *
+ * \return 0 if issuer name was parsed successfully, or
+ * a specific error code
+ */
+int x509write_crt_set_issuer_name( x509write_cert *ctx, char *issuer_name );
+
+/**
+ * \brief Set the subject name for a Certificate
+ * Subject names should contain a comma-separated list
+ * of OID types and values:
+ * e.g. "C=NL,O=Offspark,CN=PolarSSL Server 1"
+ *
+ * \param ctx CRT context to use
+ * \param subject_name subject name to set
+ *
+ * \return 0 if subject name was parsed successfully, or
+ * a specific error code
+ */
+int x509write_crt_set_subject_name( x509write_cert *ctx, char *subject_name );
+
+/**
+ * \brief Set the subject public key for the certificate
+ *
+ * \param ctx CRT context to use
+ * \param rsa RSA public key to include
+ */
+void x509write_crt_set_subject_key( x509write_cert *ctx, rsa_context *rsa );
+
+/**
+ * \brief Set the issuer key used for signing the certificate
+ *
+ * \param ctx CRT context to use
+ * \param rsa RSA key to sign with
+ */
+void x509write_crt_set_issuer_key( x509write_cert *ctx, rsa_context *rsa );
+
+/**
+ * \brief Set the MD algorithm to use for the signature
+ * (e.g. POLARSSL_MD_SHA1)
+ *
+ * \param ctx CRT context to use
+ * \param md_ald MD algorithm to use
+ */
+void x509write_crt_set_md_alg( x509write_cert *ctx, md_type_t md_alg );
+
+/**
+ * \brief Free the contents of a CRT write context
+ *
+ * \param ctx CRT context to free
+ */
+void x509write_crt_free( x509write_cert *ctx );
+
+/**
+ * \brief Write a built up certificate to a X509 DER structure
+ * Note: data is written at the end of the buffer! Use the
+ * return value to determine where you should start
+ * using the buffer
+ *
+ * \param crt certificate to write away
+ * \param buf buffer to write to
+ * \param size size of the buffer
+ *
+ * \return length of data written if successful, or a specific
+ * error code
+ */
+int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size );
+
+/**
* \brief Write a RSA public key to a PKCS#1 DER structure
* Note: data is written at the end of the buffer! Use the
* return value to determine where you should start
@@ -217,6 +361,17 @@
#if defined(POLARSSL_BASE64_C)
/**
+ * \brief Write a built up certificate to a X509 PEM string
+ *
+ * \param crt certificate to write away
+ * \param buf buffer to write to
+ * \param size size of the buffer
+ *
+ * \return 0 successful, or a specific error code
+ */
+int x509write_crt_pem( x509write_cert *ctx, unsigned char *buf, size_t size );
+
+/**
* \brief Write a RSA public key to a PKCS#1 PEM string
*
* \param rsa RSA to write away
diff --git a/library/x509write.c b/library/x509write.c
index 7e04e12..1428c67 100644
--- a/library/x509write.c
+++ b/library/x509write.c
@@ -45,55 +45,19 @@
#define polarssl_free free
#endif
-void x509write_csr_init( x509_csr *ctx )
-{
- memset( ctx, 0, sizeof(x509_csr) );
-}
-
-void x509write_csr_free( x509_csr *ctx )
-{
- x509_req_name *cur;
- asn1_named_data *cur_ext;
-
- while( ( cur = ctx->subject ) != NULL )
- {
- ctx->subject = cur->next;
- polarssl_free( cur );
- }
-
- while( ( cur_ext = ctx->extensions ) != NULL )
- {
- ctx->extensions = cur_ext->next;
- asn1_free_named_data( cur_ext );
- polarssl_free( cur_ext );
- }
-
- memset( ctx, 0, sizeof(x509_csr) );
-}
-
-void x509write_csr_set_md_alg( x509_csr *ctx, md_type_t md_alg )
-{
- ctx->md_alg = md_alg;
-}
-
-void x509write_csr_set_rsa_key( x509_csr *ctx, rsa_context *rsa )
-{
- ctx->rsa = rsa;
-}
-
-int x509write_csr_set_subject_name( x509_csr *ctx, char *subject_name )
+static int x509write_string_to_names( x509_req_name **head, char *name )
{
int ret = 0;
- char *s = subject_name, *c = s;
+ char *s = name, *c = s;
char *end = s + strlen( s );
char *oid = NULL;
int in_tag = 1;
x509_req_name *cur;
- while( ctx->subject )
+ while( *head != NULL )
{
- cur = ctx->subject;
- ctx->subject = ctx->subject->next;
+ cur = *head;
+ *head = cur->next;
polarssl_free( cur );
}
@@ -143,8 +107,8 @@
memset( cur, 0, sizeof(x509_req_name) );
- cur->next = ctx->subject;
- ctx->subject = cur;
+ cur->next = *head;
+ *head = cur;
strncpy( cur->oid, oid, strlen( oid ) );
strncpy( cur->name, s, c - s );
@@ -160,6 +124,47 @@
return( ret );
}
+void x509write_csr_init( x509_csr *ctx )
+{
+ memset( ctx, 0, sizeof(x509_csr) );
+}
+
+void x509write_csr_free( x509_csr *ctx )
+{
+ x509_req_name *cur;
+ asn1_named_data *cur_ext;
+
+ while( ( cur = ctx->subject ) != NULL )
+ {
+ ctx->subject = cur->next;
+ polarssl_free( cur );
+ }
+
+ while( ( cur_ext = ctx->extensions ) != NULL )
+ {
+ ctx->extensions = cur_ext->next;
+ asn1_free_named_data( cur_ext );
+ polarssl_free( cur_ext );
+ }
+
+ memset( ctx, 0, sizeof(x509_csr) );
+}
+
+void x509write_csr_set_md_alg( x509_csr *ctx, md_type_t md_alg )
+{
+ ctx->md_alg = md_alg;
+}
+
+void x509write_csr_set_rsa_key( x509_csr *ctx, rsa_context *rsa )
+{
+ ctx->rsa = rsa;
+}
+
+int x509write_csr_set_subject_name( x509_csr *ctx, char *subject_name )
+{
+ return x509write_string_to_names( &ctx->subject, subject_name );
+}
+
int x509write_csr_set_extension( x509_csr *ctx,
const char *oid, size_t oid_len,
const unsigned char *val, size_t val_len )
@@ -257,6 +262,94 @@
return( 0 );
}
+void x509write_crt_init( x509write_cert *ctx )
+{
+ memset( ctx, 0, sizeof(x509write_cert) );
+
+ mpi_init( &ctx->serial );
+ ctx->version = X509_CRT_VERSION_3;
+}
+
+void x509write_crt_free( x509write_cert *ctx )
+{
+ x509_req_name *cur;
+ asn1_named_data *cur_ext;
+
+ mpi_free( &ctx->serial );
+
+ while( ( cur = ctx->subject ) != NULL )
+ {
+ ctx->subject = cur->next;
+ polarssl_free( cur );
+ }
+
+ while( ( cur = ctx->issuer ) != NULL )
+ {
+ ctx->issuer = cur->next;
+ polarssl_free( cur );
+ }
+
+ while( ( cur_ext = ctx->extensions ) != NULL )
+ {
+ ctx->extensions = cur_ext->next;
+ asn1_free_named_data( cur_ext );
+ polarssl_free( cur_ext );
+ }
+
+ memset( ctx, 0, sizeof(x509_csr) );
+}
+
+void x509write_crt_set_md_alg( x509write_cert *ctx, md_type_t md_alg )
+{
+ ctx->md_alg = md_alg;
+}
+
+void x509write_crt_set_subject_key( x509write_cert *ctx, rsa_context *rsa )
+{
+ ctx->subject_key = rsa;
+}
+
+void x509write_crt_set_issuer_key( x509write_cert *ctx, rsa_context *rsa )
+{
+ ctx->issuer_key = rsa;
+}
+
+int x509write_crt_set_subject_name( x509write_cert *ctx, char *subject_name )
+{
+ return x509write_string_to_names( &ctx->subject, subject_name );
+}
+
+int x509write_crt_set_issuer_name( x509write_cert *ctx, char *issuer_name )
+{
+ return x509write_string_to_names( &ctx->issuer, issuer_name );
+}
+
+int x509write_crt_set_serial( x509write_cert *ctx, const mpi *serial )
+{
+ int ret;
+
+ if( ( ret = mpi_copy( &ctx->serial, serial ) ) != 0 )
+ return( ret );
+
+ return( 0 );
+}
+
+int x509write_crt_set_validity( x509write_cert *ctx, char *not_before,
+ char *not_after )
+{
+ if( strlen(not_before) != X509_RFC5280_UTC_TIME_LEN - 1 ||
+ strlen(not_after) != X509_RFC5280_UTC_TIME_LEN - 1 )
+ {
+ return( POLARSSL_ERR_X509WRITE_BAD_INPUT_DATA );
+ }
+ strncpy( ctx->not_before, not_before, X509_RFC5280_UTC_TIME_LEN );
+ strncpy( ctx->not_after , not_after , X509_RFC5280_UTC_TIME_LEN );
+ ctx->not_before[X509_RFC5280_UTC_TIME_LEN - 1] = 'Z';
+ ctx->not_after[X509_RFC5280_UTC_TIME_LEN - 1] = 'Z';
+
+ return( 0 );
+}
+
int x509write_pubkey_der( rsa_context *rsa, unsigned char *buf, size_t size )
{
int ret;
@@ -344,6 +437,18 @@
return( len );
}
+/*
+ * RelativeDistinguishedName ::=
+ * SET OF AttributeTypeAndValue
+ *
+ * AttributeTypeAndValue ::= SEQUENCE {
+ * type AttributeType,
+ * value AttributeValue }
+ *
+ * AttributeType ::= OBJECT IDENTIFIER
+ *
+ * AttributeValue ::= ANY DEFINED BY AttributeType
+ */
static int x509_write_name( unsigned char **p, unsigned char *start, char *oid,
char *name )
{
@@ -376,6 +481,25 @@
return( len );
}
+static int x509_write_names( unsigned char **p, unsigned char *start,
+ x509_req_name *first )
+{
+ int ret;
+ size_t len = 0;
+ x509_req_name *cur = first;
+
+ while( cur != NULL )
+ {
+ ASN1_CHK_ADD( len, x509_write_name( p, start, cur->oid, cur->name ) );
+ cur = cur->next;
+ }
+
+ ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) );
+ ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
+
+ return( len );
+}
+
static int x509_write_sig( unsigned char **p, unsigned char *start,
const char *oid, unsigned char *sig, size_t size )
{
@@ -402,6 +526,21 @@
return( len );
}
+static int x509_write_time( unsigned char **p, unsigned char *start,
+ const char *time, size_t size )
+{
+ int ret;
+ size_t len = 0;
+
+ ASN1_CHK_ADD( len, asn1_write_raw_buffer( p, start,
+ (const unsigned char *) time,
+ size ) );
+ ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) );
+ ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_GENERALIZED_TIME ) );
+
+ return( len );
+}
+
int x509write_csr_der( x509_csr *ctx, unsigned char *buf, size_t size )
{
int ret;
@@ -410,9 +549,8 @@
unsigned char hash[64];
unsigned char sig[POLARSSL_MPI_MAX_SIZE];
unsigned char tmp_buf[2048];
- size_t sub_len = 0, pub_len = 0, sig_len = 0;
+ size_t pub_len = 0, sig_len = 0;
size_t len = 0;
- x509_req_name *cur = ctx->subject;
asn1_named_data *cur_ext = ctx->extensions;
c = tmp_buf + 2048 - 1;
@@ -482,16 +620,10 @@
ASN1_CHK_ADD( len, asn1_write_len( &c, tmp_buf, pub_len ) );
ASN1_CHK_ADD( len, asn1_write_tag( &c, tmp_buf, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
- while( cur != NULL )
- {
- ASN1_CHK_ADD( sub_len, x509_write_name( &c, tmp_buf, cur->oid, cur->name ) );
-
- cur = cur->next;
- }
-
- len += sub_len;
- ASN1_CHK_ADD( len, asn1_write_len( &c, tmp_buf, sub_len ) );
- ASN1_CHK_ADD( len, asn1_write_tag( &c, tmp_buf, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
+ /*
+ * Subject ::= Name
+ */
+ ASN1_CHK_ADD( len, x509_write_names( &c, tmp_buf, ctx->subject ) );
/*
* Version ::= INTEGER { v1(0), v2(1), v3(2) }
@@ -522,6 +654,123 @@
return( len );
}
+int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size )
+{
+ int ret;
+ const char *sig_oid;
+ unsigned char *c, *c2;
+ unsigned char hash[64];
+ unsigned char sig[POLARSSL_MPI_MAX_SIZE];
+ unsigned char tmp_buf[2048];
+ size_t sub_len = 0, pub_len = 0, sig_len = 0;
+ size_t len = 0;
+ asn1_named_data *cur_ext = ctx->extensions;
+
+ c = tmp_buf + 2048 - 1;
+
+ // Generate correct OID
+ //
+ ret = oid_get_oid_by_sig_alg( POLARSSL_PK_RSA, ctx->md_alg, &sig_oid );
+ if( ret != 0 )
+ return( ret );
+
+
+ /*
+ * SubjectPublicKeyInfo ::= SEQUENCE {
+ * algorithm AlgorithmIdentifier,
+ * subjectPublicKey BIT STRING }
+ */
+ ASN1_CHK_ADD( pub_len, asn1_write_mpi( &c, tmp_buf, &ctx->subject_key->E ) );
+ ASN1_CHK_ADD( pub_len, asn1_write_mpi( &c, tmp_buf, &ctx->subject_key->N ) );
+
+ ASN1_CHK_ADD( pub_len, asn1_write_len( &c, tmp_buf, pub_len ) );
+ ASN1_CHK_ADD( pub_len, asn1_write_tag( &c, tmp_buf, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
+
+ if( c - tmp_buf < 1 )
+ return( POLARSSL_ERR_ASN1_BUF_TOO_SMALL );
+
+ *--c = 0;
+ pub_len += 1;
+
+ ASN1_CHK_ADD( pub_len, asn1_write_len( &c, tmp_buf, pub_len ) );
+ ASN1_CHK_ADD( pub_len, asn1_write_tag( &c, tmp_buf, ASN1_BIT_STRING ) );
+
+ ASN1_CHK_ADD( pub_len, asn1_write_algorithm_identifier( &c, tmp_buf, OID_PKCS1_RSA ) );
+
+ len += pub_len;
+ ASN1_CHK_ADD( len, asn1_write_len( &c, tmp_buf, pub_len ) );
+ ASN1_CHK_ADD( len, asn1_write_tag( &c, tmp_buf, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
+
+ /*
+ * Subject ::= Name
+ */
+ ASN1_CHK_ADD( len, x509_write_names( &c, tmp_buf, ctx->subject ) );
+
+ /*
+ * Validity ::= SEQUENCE {
+ * notBefore Time,
+ * notAfter Time }
+ */
+ sub_len = 0;
+
+ ASN1_CHK_ADD( sub_len, x509_write_time( &c, tmp_buf, ctx->not_after,
+ X509_RFC5280_UTC_TIME_LEN ) );
+
+ ASN1_CHK_ADD( sub_len, x509_write_time( &c, tmp_buf, ctx->not_before,
+ X509_RFC5280_UTC_TIME_LEN ) );
+
+ len += sub_len;
+ ASN1_CHK_ADD( len, asn1_write_len( &c, tmp_buf, sub_len ) );
+ ASN1_CHK_ADD( len, asn1_write_tag( &c, tmp_buf, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
+
+ /*
+ * Issuer ::= Name
+ */
+ ASN1_CHK_ADD( len, x509_write_names( &c, tmp_buf, ctx->issuer ) );
+
+ /*
+ * Signature ::= AlgorithmIdentifier
+ */
+ ASN1_CHK_ADD( len, asn1_write_algorithm_identifier( &c, tmp_buf,
+ sig_oid ) );
+
+ /*
+ * Serial ::= INTEGER
+ */
+ ASN1_CHK_ADD( len, asn1_write_mpi( &c, tmp_buf, &ctx->serial ) );
+
+ /*
+ * Version ::= INTEGER { v1(0), v2(1), v3(2) }
+ */
+ sub_len = 0;
+ ASN1_CHK_ADD( sub_len, asn1_write_int( &c, tmp_buf, ctx->version ) );
+ len += sub_len;
+ ASN1_CHK_ADD( len, asn1_write_len( &c, tmp_buf, sub_len ) );
+ ASN1_CHK_ADD( len, asn1_write_tag( &c, tmp_buf, ASN1_CONTEXT_SPECIFIC | ASN1_CONSTRUCTED | 0 ) );
+
+ ASN1_CHK_ADD( len, asn1_write_len( &c, tmp_buf, len ) );
+ ASN1_CHK_ADD( len, asn1_write_tag( &c, tmp_buf, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
+
+ md( md_info_from_type( ctx->md_alg ), c, len, hash );
+
+ rsa_pkcs1_sign( ctx->issuer_key, NULL, NULL, RSA_PRIVATE, ctx->md_alg, 0, hash, sig );
+
+ c2 = buf + size - 1;
+ ASN1_CHK_ADD( sig_len, x509_write_sig( &c2, buf, sig_oid, sig, ctx->issuer_key->len ) );
+
+ c2 -= len;
+ memcpy( c2, c, len );
+
+ len += sig_len;
+ ASN1_CHK_ADD( len, asn1_write_len( &c2, buf, len ) );
+ ASN1_CHK_ADD( len, asn1_write_tag( &c2, buf, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
+
+ return( len );
+}
+
+#define PEM_BEGIN_CRT "-----BEGIN CERTIFICATE-----\n"
+#define PEM_END_CRT "-----END CERTIFICATE-----\n"
+
#define PEM_BEGIN_CSR "-----BEGIN CERTIFICATE REQUEST-----\n"
#define PEM_END_CSR "-----END CERTIFICATE REQUEST-----\n"
@@ -571,6 +820,27 @@
return( 0 );
}
+int x509write_crt_pem( x509write_cert *crt, unsigned char *buf, size_t size )
+{
+ int ret;
+ unsigned char output_buf[4096];
+
+ if( ( ret = x509write_crt_der( crt, output_buf,
+ sizeof(output_buf) ) ) < 0 )
+ {
+ return( ret );
+ }
+
+ if( ( ret = x509write_pemify( PEM_BEGIN_CRT, PEM_END_CRT,
+ output_buf + sizeof(output_buf) - 1 - ret,
+ ret, buf, size ) ) != 0 )
+ {
+ return( ret );
+ }
+
+ return( 0 );
+}
+
int x509write_pubkey_pem( rsa_context *rsa, unsigned char *buf, size_t size )
{
int ret;
diff --git a/programs/.gitignore b/programs/.gitignore
index 2b7510f..b349cd4 100644
--- a/programs/.gitignore
+++ b/programs/.gitignore
@@ -40,3 +40,4 @@
x509/cert_app
x509/cert_req
x509/crl_app
+x509/cert_write
diff --git a/programs/x509/CMakeLists.txt b/programs/x509/CMakeLists.txt
index d07cff8..8aaa4ac 100644
--- a/programs/x509/CMakeLists.txt
+++ b/programs/x509/CMakeLists.txt
@@ -19,6 +19,9 @@
add_executable(cert_req cert_req.c)
target_link_libraries(cert_req ${libs})
-install(TARGETS cert_app crl_app cert_req
+add_executable(cert_write cert_write.c)
+target_link_libraries(cert_write ${libs})
+
+install(TARGETS cert_app crl_app cert_req cert_write
DESTINATION "bin"
PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c
new file mode 100644
index 0000000..59c49b2
--- /dev/null
+++ b/programs/x509/cert_write.c
@@ -0,0 +1,423 @@
+/*
+ * Certificate generation and signing
+ *
+ * Copyright (C) 2006-2013, Brainspark B.V.
+ *
+ * This file is part of PolarSSL (http://www.polarssl.org)
+ * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
+ *
+ * All rights reserved.
+ *
+ * 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.
+ */
+
+#ifndef _CRT_SECURE_NO_DEPRECATE
+#define _CRT_SECURE_NO_DEPRECATE 1
+#endif
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.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/oid.h"
+
+#if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_RSA_C) || \
+ !defined(POLARSSL_X509_WRITE_C) || !defined(POLARSSL_FS_IO)
+int main( int argc, char *argv[] )
+{
+ ((void) argc);
+ ((void) argv);
+
+ printf("POLARSSL_BIGNUM_C and/or POLARSSL_RSA_C and/or "
+ "POLARSSL_X509_WRITE_C and/or POLARSSL_FS_IO not defined.\n");
+ return( 0 );
+}
+#else
+
+#define DFL_SUBJECT_KEY "subject.key"
+#define DFL_ISSUER_KEY "ca.key"
+#define DFL_SUBJECT_PWD ""
+#define DFL_ISSUER_PWD ""
+#define DFL_OUTPUT_FILENAME "cert.crt"
+#define DFL_SUBJECT_NAME "CN=Cert,O=PolarSSL,C=NL"
+#define DFL_ISSUER_NAME "CN=CA,O=PolarSSL,C=NL"
+#define DFL_NOT_BEFORE "20010101000000"
+#define DFL_NOT_AFTER "20301231235959"
+#define DFL_SERIAL "1"
+#define DFL_KEY_USAGE 0
+#define DFL_NS_CERT_TYPE 0
+
+/*
+ * global options
+ */
+struct options
+{
+ char *subject_key; /* filename of the subject key file */
+ char *issuer_key; /* filename of the issuer key file */
+ char *subject_pwd; /* password for the subject key file */
+ char *issuer_pwd; /* password for the issuer key file */
+ char *output_file; /* where to store the constructed key file */
+ char *subject_name; /* subject name for certificate */
+ char *issuer_name; /* issuer name for certificate */
+ char *not_before; /* validity period not before */
+ char *not_after; /* validity period not after */
+ char *serial; /* serial number string */
+ unsigned char key_usage; /* key usage flags */
+ unsigned char ns_cert_type; /* NS cert type */
+} opt;
+
+int write_certificate( x509write_cert *crt, char *output_file )
+{
+ int ret;
+ FILE *f;
+ unsigned char output_buf[4096];
+ size_t len = 0;
+
+ memset( output_buf, 0, 4096 );
+ if( ( ret = x509write_crt_pem( crt, output_buf, 4096 ) ) < 0 )
+ return( ret );
+
+ len = strlen( (char *) output_buf );
+
+ if( ( f = fopen( output_file, "w" ) ) == NULL )
+ return( -1 );
+
+ if( fwrite( output_buf, 1, len, f ) != len )
+ return( -1 );
+
+ fclose(f);
+
+ return( 0 );
+}
+
+#define USAGE \
+ "\n usage: cert_write param=<>...\n" \
+ "\n acceptable parameters:\n" \
+ " subject_key=%%s default: subject.key\n" \
+ " subject_pwd=%%s default: (empty)\n" \
+ " issuer_key=%%s default: ca.key\n" \
+ " issuer_pwd=%%s default: (empty)\n" \
+ " output_file=%%s default: cert.crt\n" \
+ " subject_name=%%s default: CN=Cert,O=PolarSSL,C=NL\n" \
+ " issuer_name=%%s default: CN=CA,O=PolarSSL,C=NL\n" \
+ " serial=%%s default: 1\n" \
+ " not_before=%%s default: 20010101000000\n"\
+ " not_after=%%s default: 20301231235959\n"\
+ " key_usage=%%s default: (empty)\n" \
+ " Comma-separated-list of values:\n" \
+ " digital_signature\n" \
+ " non_repudiation\n" \
+ " key_encipherment\n" \
+ " data_encipherment\n" \
+ " key_agreement\n" \
+ " key_certificate_sign\n" \
+ " crl_sign\n" \
+ " ns_cert_type=%%s default: (empty)\n" \
+ " Comma-separated-list of values:\n" \
+ " ssl_client\n" \
+ " ssl_server\n" \
+ " email\n" \
+ " object_signing\n" \
+ " ssl_ca\n" \
+ " email_ca\n" \
+ " object_signing_ca\n" \
+ "\n"
+
+int main( int argc, char *argv[] )
+{
+ int ret = 0;
+ rsa_context issuer_rsa, subject_rsa;
+ char buf[1024];
+ int i, j, n;
+ char *p, *q, *r;
+ x509write_cert crt;
+ mpi serial;
+
+ /*
+ * Set to sane values
+ */
+ x509write_crt_init( &crt );
+ x509write_crt_set_md_alg( &crt, POLARSSL_MD_SHA1 );
+ rsa_init( &issuer_rsa, RSA_PKCS_V15, 0 );
+ rsa_init( &subject_rsa, RSA_PKCS_V15, 0 );
+ mpi_init( &serial );
+ memset( buf, 0, 1024 );
+
+ if( argc == 0 )
+ {
+ usage:
+ printf( USAGE );
+ ret = 1;
+ goto exit;
+ }
+
+ opt.subject_key = DFL_SUBJECT_KEY;
+ opt.issuer_key = DFL_ISSUER_KEY;
+ opt.subject_pwd = DFL_SUBJECT_PWD;
+ opt.issuer_pwd = DFL_ISSUER_PWD;
+ opt.output_file = DFL_OUTPUT_FILENAME;
+ opt.subject_name = DFL_SUBJECT_NAME;
+ opt.issuer_name = DFL_ISSUER_NAME;
+ opt.not_before = DFL_NOT_BEFORE;
+ opt.not_after = DFL_NOT_AFTER;
+ opt.serial = DFL_SERIAL;
+ opt.key_usage = DFL_KEY_USAGE;
+ opt.ns_cert_type = DFL_NS_CERT_TYPE;
+
+ for( i = 1; i < argc; i++ )
+ {
+
+ p = argv[i];
+ if( ( q = strchr( p, '=' ) ) == NULL )
+ goto usage;
+ *q++ = '\0';
+
+ n = strlen( p );
+ for( j = 0; j < n; j++ )
+ {
+ if( argv[i][j] >= 'A' && argv[i][j] <= 'Z' )
+ argv[i][j] |= 0x20;
+ }
+
+ if( strcmp( p, "subject_key" ) == 0 )
+ opt.subject_key = q;
+ else if( strcmp( p, "issuer_key" ) == 0 )
+ opt.issuer_key = q;
+ else if( strcmp( p, "subject_pwd" ) == 0 )
+ opt.subject_pwd = q;
+ else if( strcmp( p, "issuer_pwd" ) == 0 )
+ opt.issuer_pwd = q;
+ else if( strcmp( p, "output_file" ) == 0 )
+ opt.output_file = q;
+ else if( strcmp( p, "subject_name" ) == 0 )
+ {
+ opt.subject_name = q;
+ }
+ else if( strcmp( p, "issuer_name" ) == 0 )
+ {
+ opt.issuer_name = q;
+ }
+ else if( strcmp( p, "not_before" ) == 0 )
+ {
+ opt.not_before = q;
+ }
+ else if( strcmp( p, "not_after" ) == 0 )
+ {
+ opt.not_after = q;
+ }
+ else if( strcmp( p, "serial" ) == 0 )
+ {
+ opt.serial = q;
+ }
+ else if( strcmp( p, "key_usage" ) == 0 )
+ {
+ while( q != NULL )
+ {
+ if( ( r = strchr( q, ',' ) ) != NULL )
+ *r++ = '\0';
+
+ if( strcmp( q, "digital_signature" ) == 0 )
+ opt.key_usage |= KU_DIGITAL_SIGNATURE;
+ else if( strcmp( q, "non_repudiation" ) == 0 )
+ opt.key_usage |= KU_NON_REPUDIATION;
+ else if( strcmp( q, "key_encipherment" ) == 0 )
+ opt.key_usage |= KU_KEY_ENCIPHERMENT;
+ else if( strcmp( q, "data_encipherment" ) == 0 )
+ opt.key_usage |= KU_DATA_ENCIPHERMENT;
+ else if( strcmp( q, "key_agreement" ) == 0 )
+ opt.key_usage |= KU_KEY_AGREEMENT;
+ else if( strcmp( q, "key_cert_sign" ) == 0 )
+ opt.key_usage |= KU_KEY_CERT_SIGN;
+ else if( strcmp( q, "crl_sign" ) == 0 )
+ opt.key_usage |= KU_CRL_SIGN;
+ else
+ goto usage;
+
+ q = r;
+ }
+ }
+ else if( strcmp( p, "ns_cert_type" ) == 0 )
+ {
+ while( q != NULL )
+ {
+ if( ( r = strchr( q, ',' ) ) != NULL )
+ *r++ = '\0';
+
+ if( strcmp( q, "ssl_client" ) == 0 )
+ opt.ns_cert_type |= NS_CERT_TYPE_SSL_CLIENT;
+ else if( strcmp( q, "ssl_server" ) == 0 )
+ opt.ns_cert_type |= NS_CERT_TYPE_SSL_SERVER;
+ else if( strcmp( q, "email" ) == 0 )
+ opt.ns_cert_type |= NS_CERT_TYPE_EMAIL;
+ else if( strcmp( q, "object_signing" ) == 0 )
+ opt.ns_cert_type |= NS_CERT_TYPE_OBJECT_SIGNING;
+ else if( strcmp( q, "ssl_ca" ) == 0 )
+ opt.ns_cert_type |= NS_CERT_TYPE_SSL_CA;
+ else if( strcmp( q, "email_ca" ) == 0 )
+ opt.ns_cert_type |= NS_CERT_TYPE_EMAIL_CA;
+ else if( strcmp( q, "object_signing_ca" ) == 0 )
+ opt.ns_cert_type |= NS_CERT_TYPE_OBJECT_SIGNING_CA;
+ else
+ goto usage;
+
+ q = r;
+ }
+ }
+ else
+ goto usage;
+ }
+
+ // Parse serial to MPI
+ //
+ if( ( ret = mpi_read_string( &serial, 10, opt.serial ) ) != 0 )
+ {
+#ifdef POLARSSL_ERROR_C
+ error_strerror( ret, buf, 1024 );
+#endif
+ printf( " failed\n ! mpi_read_string returned -0x%02x - %s\n\n", -ret, buf );
+ goto exit;
+ }
+
+/*
+ if( opt.key_usage )
+ x509write_csr_set_key_usage( &req, opt.key_usage );
+
+ if( opt.ns_cert_type )
+ x509write_csr_set_ns_cert_type( &req, opt.ns_cert_type );
+*/
+ /*
+ * 1.0. Check the names for validity
+ */
+ if( ( ret = x509write_crt_set_subject_name( &crt, opt.subject_name ) ) != 0 )
+ {
+#ifdef POLARSSL_ERROR_C
+ error_strerror( ret, buf, 1024 );
+#endif
+ printf( " failed\n ! x509write_crt_set_subject_name returned -0x%02x - %s\n\n", -ret, buf );
+ goto exit;
+ }
+
+ if( ( ret = x509write_crt_set_issuer_name( &crt, opt.issuer_name ) ) != 0 )
+ {
+#ifdef POLARSSL_ERROR_C
+ error_strerror( ret, buf, 1024 );
+#endif
+ printf( " failed\n ! x509write_crt_set_issuer_name returned -0x%02x - %s\n\n", -ret, buf );
+ goto exit;
+ }
+
+ /*
+ * 1.1. Load the keys
+ */
+ printf( "\n . Loading the subject key ..." );
+ fflush( stdout );
+
+ ret = x509parse_keyfile_rsa( &subject_rsa, opt.subject_key, opt.subject_pwd );
+
+ if( ret != 0 )
+ {
+#ifdef POLARSSL_ERROR_C
+ error_strerror( ret, buf, 1024 );
+#endif
+ printf( " failed\n ! x509parse_keyfile_rsa returned -0x%02x - %s\n\n", -ret, buf );
+ goto exit;
+ }
+
+ x509write_crt_set_subject_key( &crt, &subject_rsa );
+
+ printf( " ok\n" );
+
+ printf( " . Loading the issuer key ..." );
+ fflush( stdout );
+
+ ret = x509parse_keyfile_rsa( &issuer_rsa, opt.issuer_key, opt.issuer_pwd );
+
+ if( ret != 0 )
+ {
+#ifdef POLARSSL_ERROR_C
+ error_strerror( ret, buf, 1024 );
+#endif
+ printf( " failed\n ! x509parse_keyfile_rsa returned -x%02x - %s\n\n", -ret, buf );
+ goto exit;
+ }
+
+ x509write_crt_set_issuer_key( &crt, &issuer_rsa );
+
+ printf( " ok\n" );
+
+ printf( " . Setting certificate values ..." );
+ fflush( stdout );
+
+ ret = x509write_crt_set_serial( &crt, &serial );
+ if( ret != 0 )
+ {
+#ifdef POLARSSL_ERROR_C
+ error_strerror( ret, buf, 1024 );
+#endif
+ printf( " failed\n ! x509write_crt_set_serial returned -0x%02x - %s\n\n", -ret, buf );
+ goto exit;
+ }
+
+ ret = x509write_crt_set_validity( &crt, opt.not_before, opt.not_after );
+ if( ret != 0 )
+ {
+#ifdef POLARSSL_ERROR_C
+ error_strerror( ret, buf, 1024 );
+#endif
+ printf( " failed\n ! x509write_crt_set_validity returned -0x%02x - %s\n\n", -ret, buf );
+ goto exit;
+ }
+
+ printf( " ok\n" );
+
+ /*
+ * 1.2. Writing the request
+ */
+ printf( " . Writing the certificate..." );
+ fflush( stdout );
+
+ if( ( ret = write_certificate( &crt, opt.output_file ) ) != 0 )
+ {
+#ifdef POLARSSL_ERROR_C
+ error_strerror( ret, buf, 1024 );
+#endif
+ printf( " failed\n ! write_certifcate -0x%02x - %s\n\n", -ret, buf );
+ goto exit;
+ }
+
+ printf( " ok\n" );
+
+exit:
+ x509write_crt_free( &crt );
+ rsa_free( &subject_rsa );
+ rsa_free( &issuer_rsa );
+ mpi_free( &serial );
+
+#if defined(_WIN32)
+ printf( " + Press Enter to exit this program.\n" );
+ fflush( stdout ); getchar();
+#endif
+
+ return( ret );
+}
+#endif /* POLARSSL_BIGNUM_C && POLARSSL_RSA_C &&
+ POLARSSet_serial_X509_WRITE_C && POLARSSL_FS_IO */