RetroArch
Functions
asn1parse.c File Reference
#include "mbedtls/config.h"
#include "mbedtls/asn1.h"
#include <string.h>
#include "mbedtls/bignum.h"
#include "mbedtls/platform.h"
#include "arc4_alt.h"
Include dependency graph for asn1parse.c:

Functions

int mbedtls_asn1_get_len (unsigned char **p, const unsigned char *end, size_t *len)
 Get the length of an ASN.1 element. Updates the pointer to immediately behind the length. More...
 
int mbedtls_asn1_get_tag (unsigned char **p, const unsigned char *end, size_t *len, int tag)
 Get the tag and length of the tag. Check for the requested tag. Updates the pointer to immediately behind the tag and length. More...
 
int mbedtls_asn1_get_bool (unsigned char **p, const unsigned char *end, int *val)
 Retrieve a boolean ASN.1 tag and its value. Updates the pointer to immediately behind the full tag. More...
 
int mbedtls_asn1_get_int (unsigned char **p, const unsigned char *end, int *val)
 Retrieve an integer ASN.1 tag and its value. Updates the pointer to immediately behind the full tag. More...
 
int mbedtls_asn1_get_mpi (unsigned char **p, const unsigned char *end, mbedtls_mpi *X)
 Retrieve a MPI value from an integer ASN.1 tag. Updates the pointer to immediately behind the full tag. More...
 
int mbedtls_asn1_get_bitstring (unsigned char **p, const unsigned char *end, mbedtls_asn1_bitstring *bs)
 Retrieve a bitstring ASN.1 tag and its value. Updates the pointer to immediately behind the full tag. More...
 
int mbedtls_asn1_get_bitstring_null (unsigned char **p, const unsigned char *end, size_t *len)
 Retrieve a bitstring ASN.1 tag without unused bits and its value. Updates the pointer to the beginning of the bit/octet string. More...
 
int mbedtls_asn1_get_sequence_of (unsigned char **p, const unsigned char *end, mbedtls_asn1_sequence *cur, int tag)
 Parses and splits an ASN.1 "SEQUENCE OF <tag>" Updated the pointer to immediately behind the full sequence tag. More...
 
int mbedtls_asn1_get_alg (unsigned char **p, const unsigned char *end, mbedtls_asn1_buf *alg, mbedtls_asn1_buf *params)
 Retrieve an AlgorithmIdentifier ASN.1 sequence. Updates the pointer to immediately behind the full AlgorithmIdentifier. More...
 
int mbedtls_asn1_get_alg_null (unsigned char **p, const unsigned char *end, mbedtls_asn1_buf *alg)
 Retrieve an AlgorithmIdentifier ASN.1 sequence with NULL or no params. Updates the pointer to immediately behind the full AlgorithmIdentifier. More...
 
void mbedtls_asn1_free_named_data (mbedtls_asn1_named_data *cur)
 Free a mbedtls_asn1_named_data entry. More...
 
void mbedtls_asn1_free_named_data_list (mbedtls_asn1_named_data **head)
 Free all entries in a mbedtls_asn1_named_data list Head will be set to NULL. More...
 
mbedtls_asn1_named_datambedtls_asn1_find_named_data (mbedtls_asn1_named_data *list, const char *oid, size_t len)
 Find a specific named_data entry in a sequence or list based on the OID. More...
 

Function Documentation

◆ mbedtls_asn1_find_named_data()

mbedtls_asn1_named_data* mbedtls_asn1_find_named_data ( mbedtls_asn1_named_data list,
const char *  oid,
size_t  len 
)

Find a specific named_data entry in a sequence or list based on the OID.

Parameters
listThe list to seek through
oidThe OID to look for
lenSize of the OID
Returns
NULL if not found, or a pointer to the existing entry.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ mbedtls_asn1_free_named_data()

void mbedtls_asn1_free_named_data ( mbedtls_asn1_named_data entry)

Free a mbedtls_asn1_named_data entry.

Parameters
entryThe named data entry to free
Here is the call graph for this function:
Here is the caller graph for this function:

◆ mbedtls_asn1_free_named_data_list()

void mbedtls_asn1_free_named_data_list ( mbedtls_asn1_named_data **  head)

Free all entries in a mbedtls_asn1_named_data list Head will be set to NULL.

Parameters
headPointer to the head of the list of named data entries to free
Here is the call graph for this function:
Here is the caller graph for this function:

◆ mbedtls_asn1_get_alg()

int mbedtls_asn1_get_alg ( unsigned char **  p,
const unsigned char *  end,
mbedtls_asn1_buf alg,
mbedtls_asn1_buf params 
)

Retrieve an AlgorithmIdentifier ASN.1 sequence. Updates the pointer to immediately behind the full AlgorithmIdentifier.

Parameters
pThe position in the ASN.1 data
endEnd of data
algThe buffer to receive the OID
paramsThe buffer to receive the params (if any)
Returns
0 if successful or a specific ASN.1 or MPI error code.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ mbedtls_asn1_get_alg_null()

int mbedtls_asn1_get_alg_null ( unsigned char **  p,
const unsigned char *  end,
mbedtls_asn1_buf alg 
)

Retrieve an AlgorithmIdentifier ASN.1 sequence with NULL or no params. Updates the pointer to immediately behind the full AlgorithmIdentifier.

Parameters
pThe position in the ASN.1 data
endEnd of data
algThe buffer to receive the OID
Returns
0 if successful or a specific ASN.1 or MPI error code.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ mbedtls_asn1_get_bitstring()

int mbedtls_asn1_get_bitstring ( unsigned char **  p,
const unsigned char *  end,
mbedtls_asn1_bitstring bs 
)

Retrieve a bitstring ASN.1 tag and its value. Updates the pointer to immediately behind the full tag.

Parameters
pThe position in the ASN.1 data
endEnd of data
bsThe variable that will receive the value
Returns
0 if successful or a specific ASN.1 error code.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ mbedtls_asn1_get_bitstring_null()

int mbedtls_asn1_get_bitstring_null ( unsigned char **  p,
const unsigned char *  end,
size_t *  len 
)

Retrieve a bitstring ASN.1 tag without unused bits and its value. Updates the pointer to the beginning of the bit/octet string.

Parameters
pThe position in the ASN.1 data
endEnd of data
lenLength of the actual bit/octect string in bytes
Returns
0 if successful or a specific ASN.1 error code.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ mbedtls_asn1_get_bool()

int mbedtls_asn1_get_bool ( unsigned char **  p,
const unsigned char *  end,
int *  val 
)

Retrieve a boolean ASN.1 tag and its value. Updates the pointer to immediately behind the full tag.

Parameters
pThe position in the ASN.1 data
endEnd of data
valThe variable that will receive the value
Returns
0 if successful or a specific ASN.1 error code.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ mbedtls_asn1_get_int()

int mbedtls_asn1_get_int ( unsigned char **  p,
const unsigned char *  end,
int *  val 
)

Retrieve an integer ASN.1 tag and its value. Updates the pointer to immediately behind the full tag.

Parameters
pThe position in the ASN.1 data
endEnd of data
valThe variable that will receive the value
Returns
0 if successful or a specific ASN.1 error code.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ mbedtls_asn1_get_len()

int mbedtls_asn1_get_len ( unsigned char **  p,
const unsigned char *  end,
size_t *  len 
)

Get the length of an ASN.1 element. Updates the pointer to immediately behind the length.

Parameters
pThe position in the ASN.1 data
endEnd of data
lenThe variable that will receive the value
Returns
0 if successful, MBEDTLS_ERR_ASN1_OUT_OF_DATA on reaching end of data, MBEDTLS_ERR_ASN1_INVALID_LENGTH if length is unparseable.
Here is the caller graph for this function:

◆ mbedtls_asn1_get_mpi()

int mbedtls_asn1_get_mpi ( unsigned char **  p,
const unsigned char *  end,
mbedtls_mpi X 
)

Retrieve a MPI value from an integer ASN.1 tag. Updates the pointer to immediately behind the full tag.

Parameters
pThe position in the ASN.1 data
endEnd of data
XThe MPI that will receive the value
Returns
0 if successful or a specific ASN.1 or MPI error code.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ mbedtls_asn1_get_sequence_of()

int mbedtls_asn1_get_sequence_of ( unsigned char **  p,
const unsigned char *  end,
mbedtls_asn1_sequence cur,
int  tag 
)

Parses and splits an ASN.1 "SEQUENCE OF <tag>" Updated the pointer to immediately behind the full sequence tag.

Parameters
pThe position in the ASN.1 data
endEnd of data
curFirst variable in the chain to fill
tagType of sequence
Returns
0 if successful or a specific ASN.1 error code.
Here is the call graph for this function:
Here is the caller graph for this function:

◆ mbedtls_asn1_get_tag()

int mbedtls_asn1_get_tag ( unsigned char **  p,
const unsigned char *  end,
size_t *  len,
int  tag 
)

Get the tag and length of the tag. Check for the requested tag. Updates the pointer to immediately behind the tag and length.

Parameters
pThe position in the ASN.1 data
endEnd of data
lenThe variable that will receive the length
tagThe expected tag
Returns
0 if successful, MBEDTLS_ERR_ASN1_UNEXPECTED_TAG if tag did not match requested tag, or another specific ASN.1 error code.
Here is the call graph for this function:
Here is the caller graph for this function: