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asn1.h
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1 
6 /*
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50  */
51 #ifndef MBEDTLS_ASN1_H
52 #define MBEDTLS_ASN1_H
53 
54 #if !defined(MBEDTLS_CONFIG_FILE)
55 #include "config.h"
56 #else
57 #include MBEDTLS_CONFIG_FILE
58 #endif
59 
60 #include <stddef.h>
61 
62 #if defined(MBEDTLS_BIGNUM_C)
63 #include "bignum.h"
64 #endif
65 
78 #define MBEDTLS_ERR_ASN1_OUT_OF_DATA -0x0060
79 #define MBEDTLS_ERR_ASN1_UNEXPECTED_TAG -0x0062
80 #define MBEDTLS_ERR_ASN1_INVALID_LENGTH -0x0064
81 #define MBEDTLS_ERR_ASN1_LENGTH_MISMATCH -0x0066
82 #define MBEDTLS_ERR_ASN1_INVALID_DATA -0x0068
83 #define MBEDTLS_ERR_ASN1_ALLOC_FAILED -0x006A
84 #define MBEDTLS_ERR_ASN1_BUF_TOO_SMALL -0x006C
86 /* \} name */
87 
99 #define MBEDTLS_ASN1_BOOLEAN 0x01
100 #define MBEDTLS_ASN1_INTEGER 0x02
101 #define MBEDTLS_ASN1_BIT_STRING 0x03
102 #define MBEDTLS_ASN1_OCTET_STRING 0x04
103 #define MBEDTLS_ASN1_NULL 0x05
104 #define MBEDTLS_ASN1_OID 0x06
105 #define MBEDTLS_ASN1_UTF8_STRING 0x0C
106 #define MBEDTLS_ASN1_SEQUENCE 0x10
107 #define MBEDTLS_ASN1_SET 0x11
108 #define MBEDTLS_ASN1_PRINTABLE_STRING 0x13
109 #define MBEDTLS_ASN1_T61_STRING 0x14
110 #define MBEDTLS_ASN1_IA5_STRING 0x16
111 #define MBEDTLS_ASN1_UTC_TIME 0x17
112 #define MBEDTLS_ASN1_GENERALIZED_TIME 0x18
113 #define MBEDTLS_ASN1_UNIVERSAL_STRING 0x1C
114 #define MBEDTLS_ASN1_BMP_STRING 0x1E
115 #define MBEDTLS_ASN1_PRIMITIVE 0x00
116 #define MBEDTLS_ASN1_CONSTRUCTED 0x20
117 #define MBEDTLS_ASN1_CONTEXT_SPECIFIC 0x80
118 
119 /*
120  * Bit masks for each of the components of an ASN.1 tag as specified in
121  * ITU X.690 (08/2015), section 8.1 "General rules for encoding",
122  * paragraph 8.1.2.2:
123  *
124  * Bit 8 7 6 5 1
125  * +-------+-----+------------+
126  * | Class | P/C | Tag number |
127  * +-------+-----+------------+
128  */
129 #define MBEDTLS_ASN1_TAG_CLASS_MASK 0xC0
130 #define MBEDTLS_ASN1_TAG_PC_MASK 0x20
131 #define MBEDTLS_ASN1_TAG_VALUE_MASK 0x1F
132 
133 /* \} name */
134 /* \} addtogroup asn1_module */
135 
137 #define MBEDTLS_OID_SIZE(x) (sizeof(x) - 1)
138 
145 #define MBEDTLS_OID_CMP(oid_str, oid_buf) \
146  ( ( MBEDTLS_OID_SIZE(oid_str) != (oid_buf)->len ) || \
147  memcmp( (oid_str), (oid_buf)->p, (oid_buf)->len) != 0 )
148 
149 #ifdef __cplusplus
150 extern "C" {
151 #endif
152 
161 typedef struct mbedtls_asn1_buf
162 {
163  int tag;
164  size_t len;
165  unsigned char *p;
166 }
168 
173 {
174  size_t len;
175  unsigned char unused_bits;
176  unsigned char *p;
177 }
179 
183 typedef struct mbedtls_asn1_sequence
184 {
187 }
189 
194 {
198  unsigned char next_merged;
199 }
201 
214 int mbedtls_asn1_get_len( unsigned char **p,
215  const unsigned char *end,
216  size_t *len );
217 
230 int mbedtls_asn1_get_tag( unsigned char **p,
231  const unsigned char *end,
232  size_t *len, int tag );
233 
244 int mbedtls_asn1_get_bool( unsigned char **p,
245  const unsigned char *end,
246  int *val );
247 
258 int mbedtls_asn1_get_int( unsigned char **p,
259  const unsigned char *end,
260  int *val );
261 
272 int mbedtls_asn1_get_bitstring( unsigned char **p, const unsigned char *end,
274 
286 int mbedtls_asn1_get_bitstring_null( unsigned char **p, const unsigned char *end,
287  size_t *len );
288 
300 int mbedtls_asn1_get_sequence_of( unsigned char **p,
301  const unsigned char *end,
303  int tag);
304 
305 #if defined(MBEDTLS_BIGNUM_C)
306 
316 int mbedtls_asn1_get_mpi( unsigned char **p,
317  const unsigned char *end,
318  mbedtls_mpi *X );
319 #endif /* MBEDTLS_BIGNUM_C */
320 
333 int mbedtls_asn1_get_alg( unsigned char **p,
334  const unsigned char *end,
336 
349 int mbedtls_asn1_get_alg_null( unsigned char **p,
350  const unsigned char *end,
351  mbedtls_asn1_buf *alg );
352 
364  const char *oid, size_t len );
365 
372 
380 
381 #ifdef __cplusplus
382 }
383 #endif
384 
385 #endif /* asn1.h */
unsigned char unused_bits
Definition: asn1.h:175
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 beginnin...
mbedtls_asn1_buf oid
Definition: asn1.h:195
unsigned char next_merged
Definition: asn1.h:198
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 Al...
unsigned char * p
Definition: asn1.h:165
unsigned char * p
Definition: asn1.h:176
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 be...
mbedtls_asn1_buf buf
Definition: asn1.h:185
struct outqueuenode * head
Definition: adnsresfilter.c:66
Definition: ecma_167.h:138
GLuint GLuint end
Definition: gl.h:1545
void mbedtls_asn1_free_named_data(mbedtls_asn1_named_data *entry)
Free a mbedtls_asn1_named_data entry.
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.
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 immedia...
Multi-precision integer library.
GLenum const GLfloat * params
Definition: glext.h:5645
struct mbedtls_asn1_bitstring mbedtls_asn1_bitstring
struct mbedtls_asn1_named_data mbedtls_asn1_named_data
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.
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 ta...
GLuint GLfloat * val
Definition: glext.h:7180
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 seq...
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.
struct mbedtls_asn1_buf mbedtls_asn1_buf
mbedtls_asn1_buf val
Definition: asn1.h:196
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.
struct mbedtls_asn1_sequence mbedtls_asn1_sequence
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.
uint32_t entry
Definition: isohybrid.c:63
GLenum GLsizei len
Definition: glext.h:6722
Definition: _list.h:228
size_t len
Definition: asn1.h:164
MPI structure.
Definition: bignum.h:207
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.
struct mbedtls_asn1_named_data * next
Definition: asn1.h:197
GLfloat GLfloat p
Definition: glext.h:8902
static struct msdos_boot_sector bs
Definition: mkdosfs.c:539
struct mbedtls_asn1_sequence * next
Definition: asn1.h:186