asn1.h

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#ifndef POLARSSL_ASN1_H
#define POLARSSL_ASN1_H
 
#if !defined(POLARSSL_CONFIG_FILE)
#include "config.h"
#else
#include POLARSSL_CONFIG_FILE
#endif
 
#if defined(POLARSSL_BIGNUM_C)
#include "bignum.h"
#endif
 
#include <string.h>
 
#define POLARSSL_ERR_ASN1_OUT_OF_DATA                      -0x0060  
#define POLARSSL_ERR_ASN1_UNEXPECTED_TAG                   -0x0062  
#define POLARSSL_ERR_ASN1_INVALID_LENGTH                   -0x0064  
#define POLARSSL_ERR_ASN1_LENGTH_MISMATCH                  -0x0066  
#define POLARSSL_ERR_ASN1_INVALID_DATA                     -0x0068  
#define POLARSSL_ERR_ASN1_MALLOC_FAILED                    -0x006A  
#define POLARSSL_ERR_ASN1_BUF_TOO_SMALL                    -0x006C  
/* \} name */
 
#define ASN1_BOOLEAN                 0x01
#define ASN1_INTEGER                 0x02
#define ASN1_BIT_STRING              0x03
#define ASN1_OCTET_STRING            0x04
#define ASN1_NULL                    0x05
#define ASN1_OID                     0x06
#define ASN1_UTF8_STRING             0x0C
#define ASN1_SEQUENCE                0x10
#define ASN1_SET                     0x11
#define ASN1_PRINTABLE_STRING        0x13
#define ASN1_T61_STRING              0x14
#define ASN1_IA5_STRING              0x16
#define ASN1_UTC_TIME                0x17
#define ASN1_GENERALIZED_TIME        0x18
#define ASN1_UNIVERSAL_STRING        0x1C
#define ASN1_BMP_STRING              0x1E
#define ASN1_PRIMITIVE               0x00
#define ASN1_CONSTRUCTED             0x20
#define ASN1_CONTEXT_SPECIFIC        0x80
/* \} name */
/* \} addtogroup asn1_module */
 
#define OID_SIZE(x) (sizeof(x) - 1)
 
#define OID_CMP(oid_str, oid_buf)                                   \
        ( ( OID_SIZE(oid_str) == (oid_buf)->len ) &&                \
          memcmp( (oid_str), (oid_buf)->p, (oid_buf)->len) == 0 )
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef struct _asn1_buf
{
    int tag;                
    size_t len;             
    unsigned char *p;       
}
asn1_buf;
 
typedef struct _asn1_bitstring
{
    size_t len;                 
    unsigned char unused_bits;  
    unsigned char *p;           
}
asn1_bitstring;
 
typedef struct _asn1_sequence
{
    asn1_buf buf;                   
    struct _asn1_sequence *next;    
}
asn1_sequence;
 
typedef struct _asn1_named_data
{
    asn1_buf oid;                   
    asn1_buf val;                   
    struct _asn1_named_data *next;  
}
asn1_named_data;
 
int asn1_get_len( unsigned char **p,
                  const unsigned char *end,
                  size_t *len );
 
int asn1_get_tag( unsigned char **p,
                  const unsigned char *end,
                  size_t *len, int tag );
 
int asn1_get_bool( unsigned char **p,
                   const unsigned char *end,
                   int *val );
 
int asn1_get_int( unsigned char **p,
                  const unsigned char *end,
                  int *val );
 
int asn1_get_bitstring( unsigned char **p, const unsigned char *end,
                        asn1_bitstring *bs);
 
int asn1_get_bitstring_null( unsigned char **p, const unsigned char *end,
                             size_t *len );
 
int asn1_get_sequence_of( unsigned char **p,
                          const unsigned char *end,
                          asn1_sequence *cur,
                          int tag);
 
#if defined(POLARSSL_BIGNUM_C)
int asn1_get_mpi( unsigned char **p,
                  const unsigned char *end,
                  mpi *X );
#endif /* POLARSSL_BIGNUM_C */
 
int asn1_get_alg( unsigned char **p,
                  const unsigned char *end,
                  asn1_buf *alg, asn1_buf *params );
 
int asn1_get_alg_null( unsigned char **p,
                       const unsigned char *end,
                       asn1_buf *alg );
 
asn1_named_data *asn1_find_named_data( asn1_named_data *list,
                                       const char *oid, size_t len );
 
void asn1_free_named_data( asn1_named_data *entry );
 
void asn1_free_named_data_list( asn1_named_data **head );
 
#ifdef __cplusplus
}
#endif
 
#endif /* asn1.h */