PolarSSL v1.2.10
asn1.h
Go to the documentation of this file.
1 
27 #ifndef POLARSSL_ASN1_H
28 #define POLARSSL_ASN1_H
29 
30 #include "config.h"
31 
32 #if defined(POLARSSL_BIGNUM_C)
33 #include "bignum.h"
34 #endif
35 
36 #include <string.h>
37 
50 #define POLARSSL_ERR_ASN1_OUT_OF_DATA -0x0060
51 #define POLARSSL_ERR_ASN1_UNEXPECTED_TAG -0x0062
52 #define POLARSSL_ERR_ASN1_INVALID_LENGTH -0x0064
53 #define POLARSSL_ERR_ASN1_LENGTH_MISMATCH -0x0066
54 #define POLARSSL_ERR_ASN1_INVALID_DATA -0x0068
55 #define POLARSSL_ERR_ASN1_MALLOC_FAILED -0x006A
56 #define POLARSSL_ERR_ASN1_BUF_TOO_SMALL -0x006C
58 /* \} name */
59 
71 #define ASN1_BOOLEAN 0x01
72 #define ASN1_INTEGER 0x02
73 #define ASN1_BIT_STRING 0x03
74 #define ASN1_OCTET_STRING 0x04
75 #define ASN1_NULL 0x05
76 #define ASN1_OID 0x06
77 #define ASN1_UTF8_STRING 0x0C
78 #define ASN1_SEQUENCE 0x10
79 #define ASN1_SET 0x11
80 #define ASN1_PRINTABLE_STRING 0x13
81 #define ASN1_T61_STRING 0x14
82 #define ASN1_IA5_STRING 0x16
83 #define ASN1_UTC_TIME 0x17
84 #define ASN1_GENERALIZED_TIME 0x18
85 #define ASN1_UNIVERSAL_STRING 0x1C
86 #define ASN1_BMP_STRING 0x1E
87 #define ASN1_PRIMITIVE 0x00
88 #define ASN1_CONSTRUCTED 0x20
89 #define ASN1_CONTEXT_SPECIFIC 0x80
90 /* \} name */
91 /* \} addtogroup asn1_module */
92 
94 #define OID_SIZE(x) (sizeof(x) - 1)
95 
96 #ifdef __cplusplus
97 extern "C" {
98 #endif
99 
108 typedef struct _asn1_buf
109 {
110  int tag;
111  size_t len;
112  unsigned char *p;
113 }
114 asn1_buf;
115 
119 typedef struct _asn1_bitstring
120 {
121  size_t len;
122  unsigned char unused_bits;
123  unsigned char *p;
124 }
126 
130 typedef struct _asn1_sequence
131 {
134 }
136 
149 int asn1_get_len( unsigned char **p,
150  const unsigned char *end,
151  size_t *len );
152 
165 int asn1_get_tag( unsigned char **p,
166  const unsigned char *end,
167  size_t *len, int tag );
168 
179 int asn1_get_bool( unsigned char **p,
180  const unsigned char *end,
181  int *val );
182 
193 int asn1_get_int( unsigned char **p,
194  const unsigned char *end,
195  int *val );
196 
207 int asn1_get_bitstring( unsigned char **p, const unsigned char *end,
208  asn1_bitstring *bs);
209 
221 int asn1_get_sequence_of( unsigned char **p,
222  const unsigned char *end,
223  asn1_sequence *cur,
224  int tag);
225 
226 #if defined(POLARSSL_BIGNUM_C)
227 
237 int asn1_get_mpi( unsigned char **p,
238  const unsigned char *end,
239  mpi *X );
240 #endif
241 
242 #ifdef __cplusplus
243 }
244 #endif
245 
246 #endif /* asn1.h */
int asn1_get_sequence_of(unsigned char **p, const unsigned char *end, asn1_sequence *cur, int tag)
Parses and splits an ASN.1 &quot;SEQUENCE OF &lt;tag&gt;&quot; Updated the pointer to immediately behind the full seq...
asn1_buf buf
Buffer containing the given ASN.1 item.
Definition: asn1.h:132
struct _asn1_sequence asn1_sequence
Container for a sequence of ASN.1 items.
int asn1_get_int(unsigned char **p, const unsigned char *end, int *val)
Retrieve an integer ASN.1 tag and its value.
size_t len
ASN1 length, e.g.
Definition: asn1.h:121
Configuration options (set of defines)
unsigned char unused_bits
Number of unused bits at the end of the string.
Definition: asn1.h:122
MPI structure.
Definition: bignum.h:164
Container for ASN1 bit strings.
Definition: asn1.h:119
Multi-precision integer library.
Container for a sequence of ASN.1 items.
Definition: asn1.h:130
struct _asn1_bitstring asn1_bitstring
Container for ASN1 bit strings.
unsigned char * p
Raw ASN1 data for the bit string.
Definition: asn1.h:123
unsigned char * p
ASN1 data, e.g.
Definition: asn1.h:112
int asn1_get_bool(unsigned char **p, const unsigned char *end, int *val)
Retrieve a boolean ASN.1 tag and its value.
int tag
ASN1 type, e.g.
Definition: asn1.h:110
Type-length-value structure that allows for ASN1 using DER.
Definition: asn1.h:108
size_t len
ASN1 length, e.g.
Definition: asn1.h:111
struct _asn1_buf asn1_buf
Type-length-value structure that allows for ASN1 using DER.
int asn1_get_len(unsigned char **p, const unsigned char *end, size_t *len)
Get the length of an ASN.1 element.
int asn1_get_tag(unsigned char **p, const unsigned char *end, size_t *len, int tag)
Get the tag and length of the tag.
int asn1_get_bitstring(unsigned char **p, const unsigned char *end, asn1_bitstring *bs)
Retrieve a bitstring ASN.1 tag and its value.
int asn1_get_mpi(unsigned char **p, const unsigned char *end, mpi *X)
Retrieve a MPI value from an integer ASN.1 tag.
struct _asn1_sequence * next
The next entry in the sequence.
Definition: asn1.h:133