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asn1.h
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1 
6 /*
7  * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
8  * SPDX-License-Identifier: GPL-2.0
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License along
21  * with this program; if not, write to the Free Software Foundation, Inc.,
22  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23  *
24  * This file is part of mbed TLS (https://tls.mbed.org)
25  */
26 #ifndef MBEDTLS_ASN1_H
27 #define MBEDTLS_ASN1_H
28 
29 #if !defined(MBEDTLS_CONFIG_FILE)
30 #include "config.h"
31 #else
32 #include MBEDTLS_CONFIG_FILE
33 #endif
34 
35 #include <stddef.h>
36 
37 #if defined(MBEDTLS_BIGNUM_C)
38 #include "bignum.h"
39 #endif
40 
53 #define MBEDTLS_ERR_ASN1_OUT_OF_DATA -0x0060
54 #define MBEDTLS_ERR_ASN1_UNEXPECTED_TAG -0x0062
55 #define MBEDTLS_ERR_ASN1_INVALID_LENGTH -0x0064
56 #define MBEDTLS_ERR_ASN1_LENGTH_MISMATCH -0x0066
57 #define MBEDTLS_ERR_ASN1_INVALID_DATA -0x0068
58 #define MBEDTLS_ERR_ASN1_ALLOC_FAILED -0x006A
59 #define MBEDTLS_ERR_ASN1_BUF_TOO_SMALL -0x006C
61 /* \} name */
62 
74 #define MBEDTLS_ASN1_BOOLEAN 0x01
75 #define MBEDTLS_ASN1_INTEGER 0x02
76 #define MBEDTLS_ASN1_BIT_STRING 0x03
77 #define MBEDTLS_ASN1_OCTET_STRING 0x04
78 #define MBEDTLS_ASN1_NULL 0x05
79 #define MBEDTLS_ASN1_OID 0x06
80 #define MBEDTLS_ASN1_UTF8_STRING 0x0C
81 #define MBEDTLS_ASN1_SEQUENCE 0x10
82 #define MBEDTLS_ASN1_SET 0x11
83 #define MBEDTLS_ASN1_PRINTABLE_STRING 0x13
84 #define MBEDTLS_ASN1_T61_STRING 0x14
85 #define MBEDTLS_ASN1_IA5_STRING 0x16
86 #define MBEDTLS_ASN1_UTC_TIME 0x17
87 #define MBEDTLS_ASN1_GENERALIZED_TIME 0x18
88 #define MBEDTLS_ASN1_UNIVERSAL_STRING 0x1C
89 #define MBEDTLS_ASN1_BMP_STRING 0x1E
90 #define MBEDTLS_ASN1_PRIMITIVE 0x00
91 #define MBEDTLS_ASN1_CONSTRUCTED 0x20
92 #define MBEDTLS_ASN1_CONTEXT_SPECIFIC 0x80
93 
94 /*
95  * Bit masks for each of the components of an ASN.1 tag as specified in
96  * ITU X.690 (08/2015), section 8.1 "General rules for encoding",
97  * paragraph 8.1.2.2:
98  *
99  * Bit 8 7 6 5 1
100  * +-------+-----+------------+
101  * | Class | P/C | Tag number |
102  * +-------+-----+------------+
103  */
104 #define MBEDTLS_ASN1_TAG_CLASS_MASK 0xC0
105 #define MBEDTLS_ASN1_TAG_PC_MASK 0x20
106 #define MBEDTLS_ASN1_TAG_VALUE_MASK 0x1F
107 
108 /* \} name */
109 /* \} addtogroup asn1_module */
110 
112 #define MBEDTLS_OID_SIZE(x) (sizeof(x) - 1)
113 
120 #define MBEDTLS_OID_CMP(oid_str, oid_buf) \
121  ( ( MBEDTLS_OID_SIZE(oid_str) != (oid_buf)->len ) || \
122  memcmp( (oid_str), (oid_buf)->p, (oid_buf)->len) != 0 )
123 
124 #ifdef __cplusplus
125 extern "C" {
126 #endif
127 
136 typedef struct mbedtls_asn1_buf
137 {
138  int tag;
139  size_t len;
140  unsigned char *p;
141 }
143 
148 {
149  size_t len;
150  unsigned char unused_bits;
151  unsigned char *p;
152 }
154 
158 typedef struct mbedtls_asn1_sequence
159 {
162 }
164 
169 {
173  unsigned char next_merged;
174 }
176 
189 int mbedtls_asn1_get_len( unsigned char **p,
190  const unsigned char *end,
191  size_t *len );
192 
205 int mbedtls_asn1_get_tag( unsigned char **p,
206  const unsigned char *end,
207  size_t *len, int tag );
208 
219 int mbedtls_asn1_get_bool( unsigned char **p,
220  const unsigned char *end,
221  int *val );
222 
233 int mbedtls_asn1_get_int( unsigned char **p,
234  const unsigned char *end,
235  int *val );
236 
247 int mbedtls_asn1_get_bitstring( unsigned char **p, const unsigned char *end,
249 
261 int mbedtls_asn1_get_bitstring_null( unsigned char **p, const unsigned char *end,
262  size_t *len );
263 
275 int mbedtls_asn1_get_sequence_of( unsigned char **p,
276  const unsigned char *end,
278  int tag);
279 
280 #if defined(MBEDTLS_BIGNUM_C)
281 
291 int mbedtls_asn1_get_mpi( unsigned char **p,
292  const unsigned char *end,
293  mbedtls_mpi *X );
294 #endif /* MBEDTLS_BIGNUM_C */
295 
308 int mbedtls_asn1_get_alg( unsigned char **p,
309  const unsigned char *end,
311 
324 int mbedtls_asn1_get_alg_null( unsigned char **p,
325  const unsigned char *end,
326  mbedtls_asn1_buf *alg );
327 
339  const char *oid, size_t len );
340 
347 
355 
356 #ifdef __cplusplus
357 }
358 #endif
359 
360 #endif /* asn1.h */
unsigned char unused_bits
Definition: asn1.h:150
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:170
unsigned char next_merged
Definition: asn1.h:173
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:140
unsigned char * p
Definition: asn1.h:151
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:160
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:171
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:139
MPI structure.
Definition: bignum.h:182
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:172
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:161