ASN.1 buffer writing functionality. More...

Functions
int	asn1_write_len (unsigned char *p, unsigned char start, size_t len)
	Write a length field in ASN.1 format Note: function works backwards in data buffer.
int	asn1_write_tag (unsigned char *p, unsigned char start, unsigned char tag)
	Write a ASN.1 tag in ASN.1 format Note: function works backwards in data buffer.
int	asn1_write_raw_buffer (unsigned char *p, unsigned char start, const unsigned char *buf, size_t size)
	Write raw buffer data Note: function works backwards in data buffer.
int	asn1_write_mpi (unsigned char *p, unsigned char start, mpi *X)
	Write a big number (ASN1_INTEGER) in ASN.1 format Note: function works backwards in data buffer.
int	asn1_write_null (unsigned char *p, unsigned char start)
	Write a NULL tag (ASN1_NULL) with zero data in ASN.1 format Note: function works backwards in data buffer.
int	asn1_write_oid (unsigned char *p, unsigned char start, const char *oid, size_t oid_len)
	Write an OID tag (ASN1_OID) and data in ASN.1 format Note: function works backwards in data buffer.
int	asn1_write_algorithm_identifier (unsigned char *p, unsigned char start, const char *oid, size_t oid_len, size_t par_len)
	Write an AlgorithmIdentifier sequence in ASN.1 format Note: function works backwards in data buffer.
int	asn1_write_bool (unsigned char *p, unsigned char start, int boolean)
	Write a boolean tag (ASN1_BOOLEAN) and value in ASN.1 format Note: function works backwards in data buffer.
int	asn1_write_int (unsigned char *p, unsigned char start, int val)
	Write an int tag (ASN1_INTEGER) and value in ASN.1 format Note: function works backwards in data buffer.
int	asn1_write_printable_string (unsigned char *p, unsigned char start, const char *text, size_t text_len)
	Write a printable string tag (ASN1_PRINTABLE_STRING) and value in ASN.1 format Note: function works backwards in data buffer.
int	asn1_write_ia5_string (unsigned char *p, unsigned char start, const char *text, size_t text_len)
	Write an IA5 string tag (ASN1_IA5_STRING) and value in ASN.1 format Note: function works backwards in data buffer.
int	asn1_write_bitstring (unsigned char *p, unsigned char start, const unsigned char *buf, size_t bits)
	Write a bitstring tag (ASN1_BIT_STRING) and value in ASN.1 format Note: function works backwards in data buffer.
int	asn1_write_octet_string (unsigned char *p, unsigned char start, const unsigned char *buf, size_t size)
	Write an octet string tag (ASN1_OCTET_STRING) and value in ASN.1 format Note: function works backwards in data buffer.
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)
	Create or find a specific named_data entry for writing in a sequence or list based on the OID.

Detailed Description

ASN.1 buffer writing functionality.

This file is part of mbed TLS (https://tls.mbed.org)

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.

Definition in file asn1write.h.

Function Documentation

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
	)

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!

Parameters:

list	Pointer to the location of the head of the list to seek through (will be updated in case of a new entry)
oid	The OID to look for
oid_len	Size of the OID
val	Data to store (can be NULL if you want to fill it by hand)
val_len	Minimum length of the data buffer needed

Returns:: NULL if if there was a memory allocation error, or a pointer to the new / existing entry.

Definition at line 305 of file asn1write.c.

int asn1_write_algorithm_identifier	(	unsigned char **	p,
		unsigned char *	start,
		const char *	oid,
		size_t	oid_len,
		size_t	par_len
	)

Write an AlgorithmIdentifier sequence in ASN.1 format Note: function works backwards in data buffer.

Parameters:

p	reference to current position pointer
start	start of the buffer (for bounds-checking)
oid	the OID of the algorithm
oid_len	length of the OID
par_len	length of parameters, which must be already written. If 0, NULL parameters are added

Returns:: the length written or a negative error code

Definition at line 166 of file asn1write.c.

int asn1_write_bitstring	(	unsigned char **	p,
		unsigned char *	start,
		const unsigned char *	buf,
		size_t	bits
	)

Write a bitstring tag (ASN1_BIT_STRING) and value in ASN.1 format Note: function works backwards in data buffer.

Parameters:

p	reference to current position pointer
start	start of the buffer (for bounds-checking)
buf	the bitstring
bits	the total number of bits in the bitstring

Returns:: the length written or a negative error code

Definition at line 264 of file asn1write.c.

int asn1_write_bool	(	unsigned char **	p,
		unsigned char *	start,
		int	boolean
	)

Write a boolean tag (ASN1_BOOLEAN) and value in ASN.1 format Note: function works backwards in data buffer.

Parameters:

p	reference to current position pointer
start	start of the buffer (for bounds-checking)
boolean	0 or 1

Returns:: the length written or a negative error code

Definition at line 187 of file asn1write.c.

int asn1_write_ia5_string	(	unsigned char **	p,
		unsigned char *	start,
		const char *	text,
		size_t	text_len
	)

Write an IA5 string tag (ASN1_IA5_STRING) and value in ASN.1 format Note: function works backwards in data buffer.

Parameters:

p	reference to current position pointer
start	start of the buffer (for bounds-checking)
text	the text to write
text_len	length of the text

Returns:: the length written or a negative error code

Definition at line 249 of file asn1write.c.

int asn1_write_int	(	unsigned char **	p,
		unsigned char *	start,
		int	val
	)

Write an int tag (ASN1_INTEGER) and value in ASN.1 format Note: function works backwards in data buffer.

Parameters:

p	reference to current position pointer
start	start of the buffer (for bounds-checking)
val	the integer value

Returns:: the length written or a negative error code

Definition at line 204 of file asn1write.c.

int asn1_write_len	(	unsigned char **	p,
		unsigned char *	start,
		size_t	len
	)

Write a length field in ASN.1 format Note: function works backwards in data buffer.

Parameters:

p	reference to current position pointer
start	start of the buffer (for bounds-checking)
len	the length to write

Returns:: the length written or a negative error code

Definition at line 43 of file asn1write.c.

int asn1_write_mpi	(	unsigned char **	p,
		unsigned char *	start,
		mpi *	X
	)

Write a big number (ASN1_INTEGER) in ASN.1 format Note: function works backwards in data buffer.

Parameters:

p	reference to current position pointer
start	start of the buffer (for bounds-checking)
X	the MPI to write

Returns:: the length written or a negative error code

Definition at line 102 of file asn1write.c.

int asn1_write_null	(	unsigned char **	p,
		unsigned char *	start
	)

Write a NULL tag (ASN1_NULL) with zero data in ASN.1 format Note: function works backwards in data buffer.

Parameters:

p	reference to current position pointer
start	start of the buffer (for bounds-checking)

Returns:: the length written or a negative error code

Definition at line 139 of file asn1write.c.

int asn1_write_octet_string	(	unsigned char **	p,
		unsigned char *	start,
		const unsigned char *	buf,
		size_t	size
	)

Write an octet string tag (ASN1_OCTET_STRING) and value in ASN.1 format Note: function works backwards in data buffer.

Parameters:

p	reference to current position pointer
start	start of the buffer (for bounds-checking)
buf	data buffer to write
size	length of the data buffer

Returns:: the length written or a negative error code

Definition at line 291 of file asn1write.c.

int asn1_write_oid	(	unsigned char **	p,
		unsigned char *	start,
		const char *	oid,
		size_t	oid_len
	)

Write an OID tag (ASN1_OID) and data in ASN.1 format Note: function works backwards in data buffer.

Parameters:

p	reference to current position pointer
start	start of the buffer (for bounds-checking)
oid	the OID to write
oid_len	length of the OID

Returns:: the length written or a negative error code

Definition at line 152 of file asn1write.c.

int asn1_write_printable_string	(	unsigned char **	p,
		unsigned char *	start,
		const char *	text,
		size_t	text_len
	)

Write a printable string tag (ASN1_PRINTABLE_STRING) and value in ASN.1 format Note: function works backwards in data buffer.

Parameters:

p	reference to current position pointer
start	start of the buffer (for bounds-checking)
text	the text to write
text_len	length of the text

Returns:: the length written or a negative error code

Definition at line 234 of file asn1write.c.

int asn1_write_raw_buffer	(	unsigned char **	p,
		unsigned char *	start,
		const unsigned char *	buf,
		size_t	size
	)

Write raw buffer data Note: function works backwards in data buffer.

Parameters:

p	reference to current position pointer
start	start of the buffer (for bounds-checking)
buf	data buffer to write
size	length of the data buffer

Returns:: the length written or a negative error code

Definition at line 86 of file asn1write.c.

int asn1_write_tag	(	unsigned char **	p,
		unsigned char *	start,
		unsigned char	tag
	)

Write a ASN.1 tag in ASN.1 format Note: function works backwards in data buffer.

Parameters:

p	reference to current position pointer
start	start of the buffer (for bounds-checking)
tag	the tag to write

Returns:: the length written or a negative error code

Definition at line 76 of file asn1write.c.

Type:	Library
Created:	11 Jun 2015
Imports:	10
Forks:	0
Commits:	1
Dependents:	2
Dependencies:	0
Followers:	1

asn1write.h File Reference

Functions

Detailed Description

Function Documentation

Repository toolbox

Repository details

Important Information for this Arm website

asn1write.h File Reference

Functions

Detailed Description

Function Documentation

Repository toolbox

Repository details

Important Information for this Arm website

Access Warning