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456 lines
14 KiB
C
456 lines
14 KiB
C
/**
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* \file x509write.h
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*
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* \brief X509 buffer writing functionality
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*
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* Copyright (C) 2006-2013, Brainspark B.V.
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef POLARSSL_X509_WRITE_H
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#define POLARSSL_X509_WRITE_H
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#include "config.h"
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#include "x509.h"
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/**
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* \addtogroup x509_module
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* \{
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*/
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/**
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* \name X509 Write Error codes
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* \{
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*/
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#define POLARSSL_ERR_X509WRITE_UNKNOWN_OID -0x5F80 /**< Requested OID is unknown. */
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#define POLARSSL_ERR_X509WRITE_BAD_INPUT_DATA -0x5F00 /**< Failed to allocate memory. */
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#define POLARSSL_ERR_X509WRITE_MALLOC_FAILED -0x5E80 /**< Failed to allocate memory. */
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/* \} name */
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/* \} addtogroup x509_module */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \addtogroup x509_module
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* \{
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*/
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/**
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* \name Structures for writing X.509 CSRs (Certificate Signing Request)
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* \{
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*/
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/**
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* Container for a CSR
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*/
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typedef struct _x509_csr
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{
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rsa_context *rsa;
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asn1_named_data *subject;
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md_type_t md_alg;
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asn1_named_data *extensions;
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}
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x509_csr;
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#define X509_CRT_VERSION_1 0
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#define X509_CRT_VERSION_2 1
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#define X509_CRT_VERSION_3 2
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#define X509_RFC5280_MAX_SERIAL_LEN 32
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#define X509_RFC5280_UTC_TIME_LEN 15
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/**
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* Container for writing a certificate (CRT)
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*/
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typedef struct _x509write_cert
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{
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int version;
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mpi serial;
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rsa_context *subject_key;
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rsa_context *issuer_key;
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asn1_named_data *subject;
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asn1_named_data *issuer;
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md_type_t md_alg;
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char not_before[X509_RFC5280_UTC_TIME_LEN + 1];
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char not_after[X509_RFC5280_UTC_TIME_LEN + 1];
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asn1_named_data *extensions;
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}
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x509write_cert;
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/* \} addtogroup x509_module */
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/**
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* \brief Initialize a CSR context
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*
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* \param ctx CSR context to initialize
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*/
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void x509write_csr_init( x509_csr *ctx );
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/**
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* \brief Set the subject name for a CSR
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* Subject names should contain a comma-separated list
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* of OID types and values:
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* e.g. "C=NL,O=Offspark,CN=PolarSSL Server 1"
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*
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* \param ctx CSR context to use
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* \param subject_name subject name to set
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*
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* \return 0 if subject name was parsed successfully, or
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* a specific error code
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*/
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int x509write_csr_set_subject_name( x509_csr *ctx, char *subject_name );
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/**
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* \brief Set the RSA key for a CSR (public key will be included,
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* private key used to sign the CSR when writing it)
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*
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* \param ctx CSR context to use
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* \param rsa RSA key to include
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*/
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void x509write_csr_set_rsa_key( x509_csr *ctx, rsa_context *rsa );
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/**
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* \brief Set the MD algorithm to use for the signature
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* (e.g. POLARSSL_MD_SHA1)
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*
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* \param ctx CSR context to use
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* \param md_ald MD algorithm to use
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*/
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void x509write_csr_set_md_alg( x509_csr *ctx, md_type_t md_alg );
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/**
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* \brief Set the Key Usage Extension flags
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* (e.g. KU_DIGITAL_SIGNATURE | KU_KEY_CERT_SIGN)
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*
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* \param ctx CSR context to use
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* \param key_usage key usage flags to set
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*
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* \return 0 if successful, or POLARSSL_ERR_X509WRITE_MALLOC_FAILED
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*/
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int x509write_csr_set_key_usage( x509_csr *ctx, unsigned char key_usage );
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/**
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* \brief Set the Netscape Cert Type flags
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* (e.g. NS_CERT_TYPE_SSL_CLIENT | NS_CERT_TYPE_EMAIL)
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*
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* \param ctx CSR context to use
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* \param ns_cert_type Netscape Cert Type flags to set
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*
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* \return 0 if successful, or POLARSSL_ERR_X509WRITE_MALLOC_FAILED
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*/
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int x509write_csr_set_ns_cert_type( x509_csr *ctx, unsigned char ns_cert_type );
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/**
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* \brief Generic function to add to or replace an extension in the CSR
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*
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* \param ctx CSR context to use
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* \param oid OID of the extension
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* \param oid_len length of the OID
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* \param val value of the extension OCTET STRING
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* \param val_len length of the value data
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*
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* \return 0 if successful, or a POLARSSL_ERR_X509WRITE_MALLOC_FAILED
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*/
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int x509write_csr_set_extension( x509_csr *ctx,
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const char *oid, size_t oid_len,
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const unsigned char *val, size_t val_len );
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/**
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* \brief Free the contents of a CSR context
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*
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* \param ctx CSR context to free
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*/
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void x509write_csr_free( x509_csr *ctx );
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/**
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* \brief Initialize a CRT writing context
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*
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* \param ctx CRT context to initialize
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*/
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void x509write_crt_init( x509write_cert *ctx );
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/**
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* \brief Set the verion for a Certificate
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* Default: X509_CRT_VERSION_3
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*
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* \param ctx CRT context to use
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* \param version version to set (X509_CRT_VERSION_1, X509_CRT_VERSION_2 or
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* X509_CRT_VERSION_3)
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*/
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void x509write_crt_set_version( x509write_cert *ctx, int version );
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/**
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* \brief Set the serial number for a Certificate.
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*
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* \param ctx CRT context to use
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* \param serial serial number to set
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*
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* \return 0 if successful
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*/
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int x509write_crt_set_serial( x509write_cert *ctx, const mpi *serial );
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/**
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* \brief Set the validity period for a Certificate
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* Timestamps should be in string format for UTC timezone
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* i.e. "YYYYMMDDhhmmss"
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* e.g. "20131231235959" for December 31st 2013
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* at 23:59:59
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*
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* \param ctx CRT context to use
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* \param not_before not_before timestamp
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* \param not_after not_after timestamp
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*
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* \return 0 if timestamp was parsed successfully, or
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* a specific error code
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*/
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int x509write_crt_set_validity( x509write_cert *ctx, char *not_before,
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char *not_after );
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/**
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* \brief Set the issuer name for a Certificate
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* Issuer names should contain a comma-separated list
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* of OID types and values:
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* e.g. "C=NL,O=Offspark,CN=PolarSSL CA"
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*
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* \param ctx CRT context to use
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* \param issuer_name issuer name to set
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*
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* \return 0 if issuer name was parsed successfully, or
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* a specific error code
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*/
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int x509write_crt_set_issuer_name( x509write_cert *ctx, char *issuer_name );
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/**
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* \brief Set the subject name for a Certificate
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* Subject names should contain a comma-separated list
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* of OID types and values:
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* e.g. "C=NL,O=Offspark,CN=PolarSSL Server 1"
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*
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* \param ctx CRT context to use
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* \param subject_name subject name to set
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*
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* \return 0 if subject name was parsed successfully, or
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* a specific error code
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*/
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int x509write_crt_set_subject_name( x509write_cert *ctx, char *subject_name );
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/**
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* \brief Set the subject public key for the certificate
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*
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* \param ctx CRT context to use
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* \param rsa RSA public key to include
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*/
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void x509write_crt_set_subject_key( x509write_cert *ctx, rsa_context *rsa );
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/**
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* \brief Set the issuer key used for signing the certificate
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*
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* \param ctx CRT context to use
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* \param rsa RSA key to sign with
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*/
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void x509write_crt_set_issuer_key( x509write_cert *ctx, rsa_context *rsa );
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/**
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* \brief Set the MD algorithm to use for the signature
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* (e.g. POLARSSL_MD_SHA1)
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*
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* \param ctx CRT context to use
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* \param md_ald MD algorithm to use
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*/
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void x509write_crt_set_md_alg( x509write_cert *ctx, md_type_t md_alg );
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/**
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* \brief Generic function to add to or replace an extension in the
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* CRT
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*
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* \param ctx CRT context to use
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* \param oid OID of the extension
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* \param oid_len length of the OID
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* \param critical if the extension is critical (per the RFC's definition)
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* \param val value of the extension OCTET STRING
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* \param val_len length of the value data
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*
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* \return 0 if successful, or a POLARSSL_ERR_X509WRITE_MALLOC_FAILED
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*/
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int x509write_crt_set_extension( x509write_cert *ctx,
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const char *oid, size_t oid_len,
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int critical,
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const unsigned char *val, size_t val_len );
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/**
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* \brief Set the basicConstraints extension for a CRT
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*
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* \param ctx CRT context to use
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* \param is_ca is this a CA certificate
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* \param max_pathlen maximum length of certificate chains below this
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* certificate (only for CA certificates, -1 is
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* inlimited)
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*
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* \return 0 if successful, or a POLARSSL_ERR_X509WRITE_MALLOC_FAILED
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*/
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int x509write_crt_set_basic_constraints( x509write_cert *ctx,
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int is_ca, int max_pathlen );
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/**
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* \brief Set the subjectKeyIdentifier extension for a CRT
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* Requires that x509write_crt_set_subject_key() has been
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* called before
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*
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* \param ctx CRT context to use
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*
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* \return 0 if successful, or a POLARSSL_ERR_X509WRITE_MALLOC_FAILED
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*/
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int x509write_crt_set_subject_key_identifier( x509write_cert *ctx );
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/**
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* \brief Set the authorityKeyIdentifier extension for a CRT
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* Requires that x509write_crt_set_issuer_key() has been
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* called before
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*
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* \param ctx CRT context to use
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*
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* \return 0 if successful, or a POLARSSL_ERR_X509WRITE_MALLOC_FAILED
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*/
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int x509write_crt_set_authority_key_identifier( x509write_cert *ctx );
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/**
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* \brief Free the contents of a CRT write context
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*
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* \param ctx CRT context to free
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*/
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void x509write_crt_free( x509write_cert *ctx );
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/**
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* \brief Write a built up certificate to a X509 DER structure
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* Note: data is written at the end of the buffer! Use the
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* return value to determine where you should start
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* using the buffer
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*
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* \param crt certificate to write away
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* \param buf buffer to write to
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* \param size size of the buffer
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*
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* \return length of data written if successful, or a specific
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* error code
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*/
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int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size );
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/**
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* \brief Write a RSA public key to a PKCS#1 DER structure
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* Note: data is written at the end of the buffer! Use the
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* return value to determine where you should start
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* using the buffer
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*
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* \param rsa RSA to write away
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* \param buf buffer to write to
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* \param size size of the buffer
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*
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* \return length of data written if successful, or a specific
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* error code
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*/
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int x509write_pubkey_der( rsa_context *rsa, unsigned char *buf, size_t size );
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/**
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* \brief Write a RSA key to a PKCS#1 DER structure
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* Note: data is written at the end of the buffer! Use the
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* return value to determine where you should start
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* using the buffer
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*
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* \param rsa RSA to write away
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* \param buf buffer to write to
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* \param size size of the buffer
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*
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* \return length of data written if successful, or a specific
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* error code
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*/
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int x509write_key_der( rsa_context *rsa, unsigned char *buf, size_t size );
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/**
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* \brief Write a CSR (Certificate Signing Request) to a
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* DER structure
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* Note: data is written at the end of the buffer! Use the
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* return value to determine where you should start
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* using the buffer
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*
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* \param rsa CSR to write away
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* \param buf buffer to write to
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* \param size size of the buffer
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*
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* \return length of data written if successful, or a specific
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* error code
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*/
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int x509write_csr_der( x509_csr *ctx, unsigned char *buf, size_t size );
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#if defined(POLARSSL_BASE64_C)
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/**
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* \brief Write a built up certificate to a X509 PEM string
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*
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* \param crt certificate to write away
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* \param buf buffer to write to
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* \param size size of the buffer
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*
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* \return 0 successful, or a specific error code
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*/
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int x509write_crt_pem( x509write_cert *ctx, unsigned char *buf, size_t size );
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/**
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* \brief Write a RSA public key to a PKCS#1 PEM string
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*
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* \param rsa RSA to write away
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* \param buf buffer to write to
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* \param size size of the buffer
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*
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* \return 0 successful, or a specific error code
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*/
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int x509write_pubkey_pem( rsa_context *rsa, unsigned char *buf, size_t size );
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/**
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* \brief Write a RSA key to a PKCS#1 PEM string
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*
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* \param rsa RSA to write away
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* \param buf buffer to write to
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* \param size size of the buffer
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*
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* \return 0 successful, or a specific error code
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*/
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int x509write_key_pem( rsa_context *rsa, unsigned char *buf, size_t size );
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/**
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* \brief Write a CSR (Certificate Signing Request) to a
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* PEM string
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*
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* \param rsa CSR to write away
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* \param buf buffer to write to
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* \param size size of the buffer
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*
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* \return 0 successful, or a specific error code
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*/
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int x509write_csr_pem( x509_csr *ctx, unsigned char *buf, size_t size );
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#endif /* POLARSSL_BASE64_C */
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#ifdef __cplusplus
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}
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#endif
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#endif /* POLARSSL_X509_WRITE_H */
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