mirror of
https://github.com/yuzu-emu/mbedtls
synced 2024-11-24 22:28:22 +00:00
243 lines
9.1 KiB
C
243 lines
9.1 KiB
C
/**
|
|
* \file asn1write.h
|
|
*
|
|
* \brief ASN.1 buffer writing functionality
|
|
*
|
|
* Copyright (C) 2006-2014, 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 POLARSSL_ASN1_WRITE_H
|
|
#define POLARSSL_ASN1_WRITE_H
|
|
|
|
#include "asn1.h"
|
|
|
|
#define ASN1_CHK_ADD(g, f) do { if( ( ret = f ) < 0 ) return( ret ); else \
|
|
g += ret; } while( 0 )
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* \brief Write a length field in ASN.1 format
|
|
* Note: function works backwards in data buffer
|
|
*
|
|
* \param p reference to current position pointer
|
|
* \param start start of the buffer (for bounds-checking)
|
|
* \param len the length to write
|
|
*
|
|
* \return the length written or a negative error code
|
|
*/
|
|
int asn1_write_len( unsigned char **p, unsigned char *start, size_t len );
|
|
|
|
/**
|
|
* \brief Write a ASN.1 tag in ASN.1 format
|
|
* Note: function works backwards in data buffer
|
|
*
|
|
* \param p reference to current position pointer
|
|
* \param start start of the buffer (for bounds-checking)
|
|
* \param tag the tag to write
|
|
*
|
|
* \return the length written or a negative error code
|
|
*/
|
|
int asn1_write_tag( unsigned char **p, unsigned char *start,
|
|
unsigned char tag );
|
|
|
|
/**
|
|
* \brief Write raw buffer data
|
|
* Note: function works backwards in data buffer
|
|
*
|
|
* \param p reference to current position pointer
|
|
* \param start start of the buffer (for bounds-checking)
|
|
* \param buf data buffer to write
|
|
* \param size length of the data buffer
|
|
*
|
|
* \return the length written or a negative error code
|
|
*/
|
|
int asn1_write_raw_buffer( unsigned char **p, unsigned char *start,
|
|
const unsigned char *buf, size_t size );
|
|
|
|
#if defined(POLARSSL_BIGNUM_C)
|
|
/**
|
|
* \brief Write a big number (ASN1_INTEGER) in ASN.1 format
|
|
* Note: function works backwards in data buffer
|
|
*
|
|
* \param p reference to current position pointer
|
|
* \param start start of the buffer (for bounds-checking)
|
|
* \param X the MPI to write
|
|
*
|
|
* \return the length written or a negative error code
|
|
*/
|
|
int asn1_write_mpi( unsigned char **p, unsigned char *start, mpi *X );
|
|
#endif /* POLARSSL_BIGNUM_C */
|
|
|
|
/**
|
|
* \brief Write a NULL tag (ASN1_NULL) with zero data in ASN.1 format
|
|
* Note: function works backwards in data buffer
|
|
*
|
|
* \param p reference to current position pointer
|
|
* \param start start of the buffer (for bounds-checking)
|
|
*
|
|
* \return the length written or a negative error code
|
|
*/
|
|
int asn1_write_null( unsigned char **p, unsigned char *start );
|
|
|
|
/**
|
|
* \brief Write an OID tag (ASN1_OID) and data in ASN.1 format
|
|
* Note: function works backwards in data buffer
|
|
*
|
|
* \param p reference to current position pointer
|
|
* \param start start of the buffer (for bounds-checking)
|
|
* \param oid the OID to write
|
|
* \param oid_len length of the OID
|
|
*
|
|
* \return the length written or a negative error code
|
|
*/
|
|
int asn1_write_oid( unsigned char **p, unsigned char *start,
|
|
const char *oid, size_t oid_len );
|
|
|
|
/**
|
|
* \brief Write an AlgorithmIdentifier sequence in ASN.1 format
|
|
* Note: function works backwards in data buffer
|
|
*
|
|
* \param p reference to current position pointer
|
|
* \param start start of the buffer (for bounds-checking)
|
|
* \param oid the OID of the algorithm
|
|
* \param oid_len length of the OID
|
|
* \param par_len length of parameters, which must be already written.
|
|
* If 0, NULL parameters are added
|
|
*
|
|
* \return the length written or a negative error code
|
|
*/
|
|
int asn1_write_algorithm_identifier( unsigned char **p, unsigned char *start,
|
|
const char *oid, size_t oid_len,
|
|
size_t par_len );
|
|
|
|
/**
|
|
* \brief Write a boolean tag (ASN1_BOOLEAN) and value in ASN.1 format
|
|
* Note: function works backwards in data buffer
|
|
*
|
|
* \param p reference to current position pointer
|
|
* \param start start of the buffer (for bounds-checking)
|
|
* \param boolean 0 or 1
|
|
*
|
|
* \return the length written or a negative error code
|
|
*/
|
|
int asn1_write_bool( unsigned char **p, unsigned char *start, int boolean );
|
|
|
|
/**
|
|
* \brief Write an int tag (ASN1_INTEGER) and value in ASN.1 format
|
|
* Note: function works backwards in data buffer
|
|
*
|
|
* \param p reference to current position pointer
|
|
* \param start start of the buffer (for bounds-checking)
|
|
* \param val the integer value
|
|
*
|
|
* \return the length written or a negative error code
|
|
*/
|
|
int asn1_write_int( unsigned char **p, unsigned char *start, int val );
|
|
|
|
/**
|
|
* \brief Write a printable string tag (ASN1_PRINTABLE_STRING) and
|
|
* value in ASN.1 format
|
|
* Note: function works backwards in data buffer
|
|
*
|
|
* \param p reference to current position pointer
|
|
* \param start start of the buffer (for bounds-checking)
|
|
* \param text the text to write
|
|
* \param text_len length of the text
|
|
*
|
|
* \return the length written or a negative error code
|
|
*/
|
|
int asn1_write_printable_string( unsigned char **p, unsigned char *start,
|
|
const char *text, size_t text_len );
|
|
|
|
/**
|
|
* \brief Write an IA5 string tag (ASN1_IA5_STRING) and
|
|
* value in ASN.1 format
|
|
* Note: function works backwards in data buffer
|
|
*
|
|
* \param p reference to current position pointer
|
|
* \param start start of the buffer (for bounds-checking)
|
|
* \param text the text to write
|
|
* \param text_len length of the text
|
|
*
|
|
* \return the length written or a negative error code
|
|
*/
|
|
int asn1_write_ia5_string( unsigned char **p, unsigned char *start,
|
|
const char *text, size_t text_len );
|
|
|
|
/**
|
|
* \brief Write a bitstring tag (ASN1_BIT_STRING) and
|
|
* value in ASN.1 format
|
|
* Note: function works backwards in data buffer
|
|
*
|
|
* \param p reference to current position pointer
|
|
* \param start start of the buffer (for bounds-checking)
|
|
* \param buf the bitstring
|
|
* \param bits the total number of bits in the bitstring
|
|
*
|
|
* \return the length written or a negative error code
|
|
*/
|
|
int asn1_write_bitstring( unsigned char **p, unsigned char *start,
|
|
const unsigned char *buf, size_t bits );
|
|
|
|
/**
|
|
* \brief Write an octet string tag (ASN1_OCTET_STRING) and
|
|
* value in ASN.1 format
|
|
* Note: function works backwards in data buffer
|
|
*
|
|
* \param p reference to current position pointer
|
|
* \param start start of the buffer (for bounds-checking)
|
|
* \param buf data buffer to write
|
|
* \param size length of the data buffer
|
|
*
|
|
* \return the length written or a negative error code
|
|
*/
|
|
int asn1_write_octet_string( unsigned char **p, unsigned char *start,
|
|
const unsigned char *buf, size_t size );
|
|
|
|
/**
|
|
* \brief Create or find a specific named_data entry for writing in a
|
|
* sequence or list based on the OID. If not already in there,
|
|
* a new entry is added to the head of the list.
|
|
* Warning: Destructive behaviour for the val data!
|
|
*
|
|
* \param list Pointer to the location of the head of the list to seek
|
|
* through (will be updated in case of a new entry)
|
|
* \param oid The OID to look for
|
|
* \param oid_len Size of the OID
|
|
* \param val Data to store (can be NULL if you want to fill it by hand)
|
|
* \param val_len Minimum length of the data buffer needed
|
|
*
|
|
* \return NULL if if there was a memory allocation error, or a pointer
|
|
* to the new / existing entry.
|
|
*/
|
|
asn1_named_data *asn1_store_named_data( asn1_named_data **list,
|
|
const char *oid, size_t oid_len,
|
|
const unsigned char *val,
|
|
size_t val_len );
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* POLARSSL_ASN1_WRITE_H */
|