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asn1.h
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1 
6 /*
7  * Copyright The Mbed TLS Contributors
8  * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
9  *
10  * This file is provided under the Apache License 2.0, or the
11  * GNU General Public License v2.0 or later.
12  *
13  * **********
14  * Apache License 2.0:
15  *
16  * Licensed under the Apache License, Version 2.0 (the "License"); you may
17  * not use this file except in compliance with the License.
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48  */
49 #ifndef MBEDTLS_ASN1_H
50 #define MBEDTLS_ASN1_H
51 
52 #if !defined(MBEDTLS_CONFIG_FILE)
53 #include "config.h"
54 #else
55 #include MBEDTLS_CONFIG_FILE
56 #endif
57 
58 #include <stddef.h>
59 
60 #if defined(MBEDTLS_BIGNUM_C)
61 #include "bignum.h"
62 #endif
63 
76 #define MBEDTLS_ERR_ASN1_OUT_OF_DATA -0x0060
77 #define MBEDTLS_ERR_ASN1_UNEXPECTED_TAG -0x0062
78 #define MBEDTLS_ERR_ASN1_INVALID_LENGTH -0x0064
79 #define MBEDTLS_ERR_ASN1_LENGTH_MISMATCH -0x0066
80 #define MBEDTLS_ERR_ASN1_INVALID_DATA -0x0068
81 #define MBEDTLS_ERR_ASN1_ALLOC_FAILED -0x006A
82 #define MBEDTLS_ERR_ASN1_BUF_TOO_SMALL -0x006C
84 /* \} name */
85 
97 #define MBEDTLS_ASN1_BOOLEAN 0x01
98 #define MBEDTLS_ASN1_INTEGER 0x02
99 #define MBEDTLS_ASN1_BIT_STRING 0x03
100 #define MBEDTLS_ASN1_OCTET_STRING 0x04
101 #define MBEDTLS_ASN1_NULL 0x05
102 #define MBEDTLS_ASN1_OID 0x06
103 #define MBEDTLS_ASN1_UTF8_STRING 0x0C
104 #define MBEDTLS_ASN1_SEQUENCE 0x10
105 #define MBEDTLS_ASN1_SET 0x11
106 #define MBEDTLS_ASN1_PRINTABLE_STRING 0x13
107 #define MBEDTLS_ASN1_T61_STRING 0x14
108 #define MBEDTLS_ASN1_IA5_STRING 0x16
109 #define MBEDTLS_ASN1_UTC_TIME 0x17
110 #define MBEDTLS_ASN1_GENERALIZED_TIME 0x18
111 #define MBEDTLS_ASN1_UNIVERSAL_STRING 0x1C
112 #define MBEDTLS_ASN1_BMP_STRING 0x1E
113 #define MBEDTLS_ASN1_PRIMITIVE 0x00
114 #define MBEDTLS_ASN1_CONSTRUCTED 0x20
115 #define MBEDTLS_ASN1_CONTEXT_SPECIFIC 0x80
116 
117 /*
118  * Bit masks for each of the components of an ASN.1 tag as specified in
119  * ITU X.690 (08/2015), section 8.1 "General rules for encoding",
120  * paragraph 8.1.2.2:
121  *
122  * Bit 8 7 6 5 1
123  * +-------+-----+------------+
124  * | Class | P/C | Tag number |
125  * +-------+-----+------------+
126  */
127 #define MBEDTLS_ASN1_TAG_CLASS_MASK 0xC0
128 #define MBEDTLS_ASN1_TAG_PC_MASK 0x20
129 #define MBEDTLS_ASN1_TAG_VALUE_MASK 0x1F
130 
131 /* \} name */
132 /* \} addtogroup asn1_module */
133 
135 #define MBEDTLS_OID_SIZE(x) (sizeof(x) - 1)
136 
143 #define MBEDTLS_OID_CMP(oid_str, oid_buf) \
144  ( ( MBEDTLS_OID_SIZE(oid_str) != (oid_buf)->len ) || \
145  memcmp( (oid_str), (oid_buf)->p, (oid_buf)->len) != 0 )
146 
147 #ifdef __cplusplus
148 extern "C" {
149 #endif
150 
159 typedef struct mbedtls_asn1_buf
160 {
161  int tag;
162  size_t len;
163  unsigned char *p;
164 }
166 
171 {
172  size_t len;
173  unsigned char unused_bits;
174  unsigned char *p;
175 }
177 
181 typedef struct mbedtls_asn1_sequence
182 {
185 }
187 
192 {
196  unsigned char next_merged;
197 }
199 
212 int mbedtls_asn1_get_len( unsigned char **p,
213  const unsigned char *end,
214  size_t *len );
215 
228 int mbedtls_asn1_get_tag( unsigned char **p,
229  const unsigned char *end,
230  size_t *len, int tag );
231 
242 int mbedtls_asn1_get_bool( unsigned char **p,
243  const unsigned char *end,
244  int *val );
245 
256 int mbedtls_asn1_get_int( unsigned char **p,
257  const unsigned char *end,
258  int *val );
259 
270 int mbedtls_asn1_get_bitstring( unsigned char **p, const unsigned char *end,
272 
284 int mbedtls_asn1_get_bitstring_null( unsigned char **p, const unsigned char *end,
285  size_t *len );
286 
298 int mbedtls_asn1_get_sequence_of( unsigned char **p,
299  const unsigned char *end,
301  int tag);
302 
303 #if defined(MBEDTLS_BIGNUM_C)
304 
314 int mbedtls_asn1_get_mpi( unsigned char **p,
315  const unsigned char *end,
316  mbedtls_mpi *X );
317 #endif /* MBEDTLS_BIGNUM_C */
318 
331 int mbedtls_asn1_get_alg( unsigned char **p,
332  const unsigned char *end,
334 
347 int mbedtls_asn1_get_alg_null( unsigned char **p,
348  const unsigned char *end,
349  mbedtls_asn1_buf *alg );
350 
362  const char *oid, size_t len );
363 
370 
378 
379 #ifdef __cplusplus
380 }
381 #endif
382 
383 #endif /* asn1.h */
unsigned char unused_bits
Definition: asn1.h:173
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:193
unsigned char next_merged
Definition: asn1.h:196
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:163
unsigned char * p
Definition: asn1.h:174
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:183
struct outqueuenode * head
Definition: adnsresfilter.c:66
Definition: ecma_167.h:138
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:194
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.
GLuint GLuint end
Definition: gl.h:1545
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
FxCollectionEntry * cur
size_t len
Definition: asn1.h:162
MPI structure.
Definition: bignum.h:210
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:195
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:184