X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/39cc1c879e3d75b3cafd79e4e139a7f6673dd349..700d8687944db0a48535f818b59b6c9859952c61:/common/mbedtls/asn1write.h diff --git a/common/mbedtls/asn1write.h b/common/mbedtls/asn1write.h new file mode 100644 index 00000000..0b832e5c --- /dev/null +++ b/common/mbedtls/asn1write.h @@ -0,0 +1,242 @@ +/** + * \file asn1write.h + * + * \brief ASN.1 buffer writing functionality + */ +/* + * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved + * SPDX-License-Identifier: GPL-2.0 + * + * 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. + * + * This file is part of mbed TLS (https://tls.mbed.org) + */ +#ifndef MBEDTLS_ASN1_WRITE_H +#define MBEDTLS_ASN1_WRITE_H + +#include "asn1.h" + +#define MBEDTLS_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 mbedtls_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 mbedtls_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 mbedtls_asn1_write_raw_buffer( unsigned char **p, unsigned char *start, + const unsigned char *buf, size_t size ); + +#if defined(MBEDTLS_BIGNUM_C) +/** + * \brief Write a big number (MBEDTLS_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 mbedtls_asn1_write_mpi( unsigned char **p, unsigned char *start, const mbedtls_mpi *X ); +#endif /* MBEDTLS_BIGNUM_C */ + +/** + * \brief Write a NULL tag (MBEDTLS_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 mbedtls_asn1_write_null( unsigned char **p, unsigned char *start ); + +/** + * \brief Write an OID tag (MBEDTLS_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 mbedtls_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 mbedtls_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 (MBEDTLS_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 mbedtls_asn1_write_bool( unsigned char **p, unsigned char *start, int boolean ); + +/** + * \brief Write an int tag (MBEDTLS_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 mbedtls_asn1_write_int( unsigned char **p, unsigned char *start, int val ); + +/** + * \brief Write a printable string tag (MBEDTLS_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 mbedtls_asn1_write_printable_string( unsigned char **p, unsigned char *start, + const char *text, size_t text_len ); + +/** + * \brief Write an IA5 string tag (MBEDTLS_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 mbedtls_asn1_write_ia5_string( unsigned char **p, unsigned char *start, + const char *text, size_t text_len ); + +/** + * \brief Write a bitstring tag (MBEDTLS_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 mbedtls_asn1_write_bitstring( unsigned char **p, unsigned char *start, + const unsigned char *buf, size_t bits ); + +/** + * \brief Write an octet string tag (MBEDTLS_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 mbedtls_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. + */ +mbedtls_asn1_named_data *mbedtls_asn1_store_named_data( mbedtls_asn1_named_data **list, + const char *oid, size_t oid_len, + const unsigned char *val, + size_t val_len ); + +#ifdef __cplusplus +} +#endif + +#endif /* MBEDTLS_ASN1_WRITE_H */