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GmSSL/include/gmssl/asn1.h
Zhi Guan cda0fae675 Update version to beta 
Fix the record_do_recv bug and update version
2022-07-27 17:50:01 +08:00

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/*
* Copyright (c) 2014 - 2021 The GmSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the GmSSL Project.
* (http://gmssl.org/)"
*
* 4. The name "GmSSL Project" must not be used to endorse or promote
* products derived from this software without prior written
* permission. For written permission, please contact
* guanzhi1980@gmail.com.
*
* 5. Products derived from this software may not be called "GmSSL"
* nor may "GmSSL" appear in their names without prior written
* permission of the GmSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the GmSSL Project
* (http://gmssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE GmSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef GMSSL_ASN1_H
#define GMSSL_ASN1_H
#include <time.h>
#include <stdlib.h>
#include <stdint.h>
#if __cplusplus
extern "C" {
#endif
#define ASN1_TAG_UNIVERSAL 0x00
#define ASN1_TAG_APPLICATION 0x40
#define ASN1_TAG_CONTENT_SPECIFIC 0x80
#define ASN1_TAG_PRIVATE 0xC0
#define ASN1_TAG_PRIMITIVE 0x00
#define ASN1_TAG_CONSTRUCTED 0x20
#define ASN1_TAG_IMPLICIT(index) (ASN1_TAG_CONTENT_SPECIFIC|(index))
#define ASN1_TAG_EXPLICIT(index) ASN1_TAG_IMPLICIT(ASN1_TAG_CONSTRUCTED|(index))
#define ASN1_FMT_FULL 0x01
enum ASN1_TAG {
ASN1_TAG_BOOLEAN = 1,
ASN1_TAG_INTEGER = 2,
ASN1_TAG_BIT_STRING = 3,
ASN1_TAG_OCTET_STRING = 4,
ASN1_TAG_NULL = 5,
ASN1_TAG_OBJECT_IDENTIFIER = 6,
ASN1_TAG_ObjectDescriptor = 7,
ASN1_TAG_EXTERNAL = 8,
ASN1_TAG_REAL = 9,
ASN1_TAG_ENUMERATED = 10, // 0x0A
ASN1_TAG_EMBEDDED = 11, // 0x0B
ASN1_TAG_UTF8String = 12, // 0x0C
ASN1_TAG_RELATIVE_OID = 13, // 0x0D
ASN1_TAG_NumericString = 18, // 0x12
ASN1_TAG_PrintableString = 19, // 0x13, printable subset of ascii
ASN1_TAG_TeletexString = 20, // 0x14, T61String
ASN1_TAG_VideotexString = 21, // 0x15
ASN1_TAG_IA5String = 22, // 0x16, 7-bit ascii
ASN1_TAG_UTCTime = 23, // 0x17
ASN1_TAG_GeneralizedTime = 24, // 0x18
ASN1_TAG_GraphicString = 25, // 0x19
ASN1_TAG_VisibleString = 26, // 0x20
ASN1_TAG_GeneralString = 27, // 0x21
ASN1_TAG_UniversalString = 28, // 0x22
ASN1_TAG_CHARACTER_STRING = 29, // 0x23
ASN1_TAG_BMPString = 30, // 0x24, 2-byte unicode with zeros
ASN1_TAG_SEQUENCE = 0x30,
ASN1_TAG_SET = 0x31,
ASN1_TAG_EXPLICIT = 0xa0,
};
const char *asn1_tag_name(int tag);
int asn1_tag_to_der(int tag, uint8_t **out, size_t *outlen);
int asn1_tag_from_der(int tag, const uint8_t **in, size_t *inlen);
int asn1_any_tag_from_der(int *tag, const uint8_t **in, size_t *inlen);
int asn1_tag_get(int *tag, const uint8_t **in, size_t *inlen); // 尝试读取下一个tag，但是并不修改in,inlen
int asn1_tag_is_cstring(int tag);
int asn1_length_to_der(size_t dlen, uint8_t **out, size_t *outlen);
int asn1_length_from_der(size_t *dlen, const uint8_t **in, size_t *inlen);
int asn1_length_is_zero(size_t len);
int asn1_length_le(size_t len1, size_t len2); // less than
int asn1_data_to_der(const uint8_t *d, size_t dlen, uint8_t **out, size_t *outlen);
int asn1_data_from_der(const uint8_t **d, size_t dlen, const uint8_t **in, size_t *inlen);
int asn1_type_to_der(int tag, const uint8_t *d, size_t dlen, uint8_t **out, size_t *outlen);
int asn1_type_from_der(int tag, const uint8_t **d, size_t *dlen, const uint8_t **in, size_t *inlen);
int asn1_any_type_from_der(int *tag, const uint8_t **d, size_t *dlen, const uint8_t **in, size_t *inlen);
int asn1_any_to_der(const uint8_t *a, size_t alen, uint8_t **out, size_t *outlen); // 调用方应保证a,alen为TLV
int asn1_any_from_der(const uint8_t **a, size_t *alen, const uint8_t **in, size_t *inlen); // 该函数会检查输入是否为TLV
const char *asn1_boolean_name(int val);
int asn1_boolean_from_name(int *val, const char *name);
int asn1_boolean_to_der_ex(int tag, int val, uint8_t **out, size_t *outlen);
int asn1_boolean_from_der_ex(int tag, int *val, const uint8_t **in, size_t *inlen);
#define asn1_boolean_to_der(val,out,outlen) asn1_boolean_to_der_ex(ASN1_TAG_BOOLEAN,val,out,outlen)
#define asn1_boolean_from_der(val,in,inlen) asn1_boolean_from_der_ex(ASN1_TAG_BOOLEAN,val,in,inlen)
#define asn1_implicit_boolean_to_der(i,val,out,outlen) asn1_boolean_to_der_ex(ASN1_TAG_IMPLICIT(i),val,out,outlen)
#define asn1_implicit_boolean_from_der(i,val,in,inlen) asn1_boolean_from_der_ex(ASN1_TAG_IMPLICIT(i),val,in,inlen)
// asn1_integer_ 不支持负数编解码
int asn1_integer_to_der_ex(int tag, const uint8_t *d, size_t dlen, uint8_t **out, size_t *outlen);
int asn1_integer_from_der_ex(int tag, const uint8_t **d, size_t *dlen, const uint8_t **in, size_t *inlen);
#define asn1_integer_to_der(d,dlen,out,outlen) asn1_integer_to_der_ex(ASN1_TAG_INTEGER,d,dlen,out,outlen)
#define asn1_integer_from_der(d,dlen,in,inlen) asn1_integer_from_der_ex(ASN1_TAG_INTEGER,d,dlen,in,inlen)
#define asn1_implicit_integer_to_der(i,d,dlen,out,outlen) asn1_integer_to_der_ex(ASN1_TAG_IMPLICIT(i),d,dlen,out,outlen)
#define asn1_implicit_integer_from_der(i,d,dlen,in,inlen) asn1_integer_from_der_ex(ASN1_TAG_IMPLICIT(i),d,dlen,in,inlen)
// asn1_int_ 只支持小的无符号整数的编解码，不支持负数
int asn1_int_to_der_ex(int tag, int val, uint8_t **out, size_t *outlen); // 当 val == -1 时，不输出，返回 0
int asn1_int_from_der_ex(int tag, int *val, const uint8_t **in, size_t *inlen); // 不支持负数，返回0时 *val 设置为 -1
#define asn1_int_to_der(val,out,outlen) asn1_int_to_der_ex(ASN1_TAG_INTEGER,val,out,outlen)
#define asn1_int_from_der(val,in,inlen) asn1_int_from_der_ex(ASN1_TAG_INTEGER,val,in,inlen)
#define asn1_implicit_int_to_der(i,val,out,outlen) asn1_int_to_der_ex(ASN1_TAG_IMPLICIT(i),val,out,outlen)
#define asn1_implicit_int_from_der(i,val,in,inlen) asn1_int_from_der_ex(ASN1_TAG_IMPLICIT(i),val,in,inlen)
// 比特长度不必须为8的整数倍
int asn1_bit_string_to_der_ex(int tag, const uint8_t *d, size_t nbits, uint8_t **out, size_t *outlen);
int asn1_bit_string_from_der_ex(int tag, const uint8_t **d, size_t *nbits, const uint8_t **in, size_t *inlen);
#define asn1_bit_string_to_der(d,nbits,out,outlen) asn1_bit_string_to_der_ex(ASN1_TAG_BIT_STRING,d,nbits,out,outlen)
#define asn1_bit_string_from_der(d,nbits,in,inlen) asn1_bit_string_from_der_ex(ASN1_TAG_BIT_STRING,d,nbits,in,inlen)
#define asn1_implicit_bit_string_to_der(i,d,nbits,out,outlen) asn1_bit_string_to_der_ex(ASN1_TAG_IMPLICIT(i),d,nbits,out,outlen)
#define asn1_implicit_bit_string_from_der(i,d,nbits,in,inlen) asn1_bit_string_from_der_ex(ASN1_TAG_IMPLICIT(i),d,nbits,in,inlen)
// 比特长度必须为8的整数倍，因此使用字节长度
int asn1_bit_octets_to_der_ex(int tag, const uint8_t *d, size_t dlen, uint8_t **out, size_t *outlen);
int asn1_bit_octets_from_der_ex(int tag, const uint8_t **d, size_t *dlen, const uint8_t **in, size_t *inlen);
#define asn1_bit_octets_to_der(d,dlen,out,outlen) asn1_bit_octets_to_der_ex(ASN1_TAG_BIT_STRING,d,dlen,out,outlen)
#define asn1_bit_octets_from_der(d,dlen,in,inlen) asn1_bit_octets_from_der_ex(ASN1_TAG_BIT_STRING,d,dlen,in,inlen)
#define asn1_implicit_bit_octets_to_der(i,d,dlen,out,outlen) asn1_bit_octets_to_der_ex(ASN1_TAG_IMPLICIT(i),d,dlen,out,outlen)
#define asn1_implicit_bit_octets_from_der(i,d,dlen,in,inlen) asn1_bit_octets_from_der_ex(ASN1_TAG_IMPLICIT(i),d,dlen,in,inlen)
// bits == -1 不编码，只支持较少的比特数量
int asn1_bits_to_der_ex(int tag, int bits, uint8_t **out, size_t *outlen);
int asn1_bits_from_der_ex(int tag, int *bits, const uint8_t **in, size_t *inlen);
#define asn1_bits_to_der(bits,out,outlen) asn1_bits_to_der_ex(ASN1_TAG_BIT_STRING,bits,out,outlen)
#define asn1_bits_from_der(bits,in,inlen) asn1_bits_from_der_ex(ASN1_TAG_BIT_STRING,bits,in,inlen)
#define asn1_implicit_bits_to_der(i,bits,out,outlen) asn1_bits_to_der_ex(ASN1_TAG_IMPLICIT(i),bits,out,outlen)
#define asn1_implicit_bits_from_der(i,bits,in,inlen) asn1_bits_from_der_ex(ASN1_TAG_IMPLICIT(i),bits,in,inlen)
// names[i]对应第i个比特
int asn1_bits_print(FILE *fp, int fmt, int ind, const char *label, const char **names, size_t names_cnt, int bits);
#define asn1_octet_string_to_der_ex(tag,d,dlen,out,outlen) asn1_type_to_der(tag,d,dlen,out,outlen)
#define asn1_octet_string_from_der_ex(tag,d,dlen,in,inlen) asn1_type_from_der(tag,d,dlen,in,inlen)
#define asn1_octet_string_to_der(d,dlen,out,outlen) asn1_type_to_der(ASN1_TAG_OCTET_STRING,d,dlen,out,outlen)
#define asn1_octet_string_from_der(d,dlen,in,inlen) asn1_type_from_der(ASN1_TAG_OCTET_STRING,d,dlen,in,inlen)
#define asn1_implicit_octet_string_to_der(i,d,dlen,out,outlen) asn1_type_to_der(ASN1_TAG_IMPLICIT(i),d,dlen,out,outlen)
#define asn1_implicit_octet_string_from_der(i,d,dlen,in,inlen) asn1_type_from_der(ASN1_TAG_IMPLICIT(i),d,dlen,in,inlen)
const char *asn1_null_name(void);
int asn1_null_to_der(uint8_t **out, size_t *outlen);
int asn1_null_from_der(const uint8_t **in, size_t *inlen);
#define ASN1_OID_MAX_NODES 32
int asn1_object_identifier_to_octets(const uint32_t *nodes, size_t nodes_cnt, uint8_t *out, size_t *outlen);
int asn1_object_identifier_from_octets(uint32_t *nodes, size_t *nodes_cnt, const uint8_t *in, size_t inlen);
int asn1_object_identifier_equ(const uint32_t *a, size_t a_cnt, const uint32_t *b, size_t b_cnt);
int asn1_object_identifier_to_der_ex(int tag, const uint32_t *nodes, size_t nodes_cnt, uint8_t **out, size_t *outlen);
int asn1_object_identifier_from_der_ex(int tag, uint32_t *nodes, size_t *nodes_cnt, const uint8_t **in, size_t *inlen);
#define asn1_object_identifier_to_der(nodes,nodes_cnt,out,outlen) asn1_object_identifier_to_der_ex(ASN1_TAG_OBJECT_IDENTIFIER,nodes,nodes_cnt,out,outlen)
#define asn1_object_identifier_from_der(nodes,nodes_cnt,in,inlen) asn1_object_identifier_from_der_ex(ASN1_TAG_OBJECT_IDENTIFIER,nodes,nodes_cnt,in,inlen)
#define asn1_implicit_object_identifier_to_der(i,nodes,nodes_cnt,out,outlen) asn1_object_identifier_to_der_ex(ASN1_TAG_IMPLICIT(i),nodes,nodes_cnt,out,outlen)
#define asn1_implicit_object_identifier_from_der(i,nodes,nodes_cnt,in,inlen) asn1_object_identifier_from_der_ex(ASN1_TAG_IMPLICIT(i),nodes,nodes_cnt,in,inlen)
int asn1_object_identifier_print(FILE *fp, int fmt, int ind, const char *label, const char *name,
const uint32_t *nodes, size_t nodes_cnt);
#define asn1_enumerated_to_der_ex(tag,val,out,outlen) asn1_int_to_der_ex(tag,val,out,outlen)
#define asn1_enumerated_from_der_ex(tag,val,in,inlen) asn1_int_from_der_ex(tag,val,in,inlen)
#define asn1_enumerated_to_der(val,out,outlen) asn1_int_to_der_ex(ASN1_TAG_ENUMERATED,val,out,outlen)
#define asn1_enumerated_from_der(val,in,inlen) asn1_int_from_der_ex(ASN1_TAG_ENUMERATED,val,in,inlen)
#define asn1_implicit_enumerated_to_der(i,val,out,outlen) asn1_int_to_der_ex(ASN1_TAG_IMPLICIT(i),val,out,outlen)
#define asn1_implicit_enumerated_from_der(i,val,in,inlen) asn1_int_from_der_ex(ASN1_TAG_IMPLICIT(i),val,in,inlen)
int asn1_utf8_string_check(const char *d, size_t dlen);
int asn1_utf8_string_to_der_ex(int tag, const char *d, size_t dlen, uint8_t **out, size_t *outlen);
int asn1_utf8_string_from_der_ex(int tag, const char **d, size_t *dlen, const uint8_t **in, size_t *inlen);
#define asn1_utf8_string_to_der(d,dlen,out,outlen) asn1_utf8_string_to_der_ex(ASN1_TAG_UTF8String,d,dlen,out,outlen)
#define asn1_utf8_string_from_der(d,dlen,in,inlen) asn1_utf8_string_from_der_ex(ASN1_TAG_UTF8String,d,dlen,in,inlen)
#define asn1_implicit_utf8_string_to_der(i,d,dlen,out,outlen) asn1_utf8_string_to_der_ex(ASN1_TAG_IMPLICIT(i),d,dlen,out,outlen)
#define asn1_implicit_utf8_string_from_der(i,d,dlen,in,inlen) asn1_utf8_string_from_der_ex(ASN1_TAG_IMPLICIT(i),d,dlen,in,inlen)
int asn1_printable_string_check(const char *d, size_t dlen);
int asn1_printable_string_to_der_ex(int tag, const char *d, size_t dlen, uint8_t **out, size_t *outlen);
int asn1_printable_string_from_der_ex(int tag, const char **d, size_t *dlen, const uint8_t **in, size_t *inlen);
#define asn1_printable_string_to_der(d,dlen,out,outlen) asn1_printable_string_to_der_ex(ASN1_TAG_PrintableString,d,dlen,out,outlen)
#define asn1_printable_string_from_der(d,dlen,in,inlen) asn1_printable_string_from_der_ex(ASN1_TAG_PrintableString,d,dlen,in,inlen)
#define asn1_implicit_printable_string_to_der(i,d,dlen,out,outlen) asn1_printable_string_to_der_ex(ASN1_TAG_IMPLICIT(i),d,dlen,out,outlen)
#define asn1_implicit_printable_string_from_der(i,d,dlen,in,inlen) asn1_printable_string_from_der_ex(ASN1_TAG_IMPLICIT(i),d,dlen,in,inlen)
int asn1_ia5_string_check(const char *d, size_t dlen);
int asn1_ia5_string_to_der_ex(int tag, const char *d, size_t dlen, uint8_t **out, size_t *outlen);
int asn1_ia5_string_from_der_ex(int tag, const char **d, size_t *dlen, const uint8_t **in, size_t *inlen);
#define asn1_ia5_string_to_der(d,dlen,out,outlen) asn1_ia5_string_to_der_ex(ASN1_TAG_IA5String,d,dlen,out,outlen)
#define asn1_ia5_string_from_der(d,dlen,in,inlen) asn1_ia5_string_from_der_ex(ASN1_TAG_IA5String,d,dlen,in,inlen)
#define asn1_implicit_ia5_string_to_der(i,d,dlen,out,outlen) asn1_ia5_string_to_der_ex(ASN1_TAG_IMPLICIT(i),d,dlen,out,outlen)
#define asn1_implicit_ia5_string_from_der(i,d,dlen,in,inlen) asn1_ia5_string_from_der_ex(ASN1_TAG_IMPLICIT(i),d,dlen,in,inlen)
int asn1_string_print(FILE *fp, int fmt, int ind, const char *label, int tag, const uint8_t *d, size_t dlen);
#define ASN1_UTC_TIME_LEN (sizeof("YYMMDDHHMMSSZ")-1)
#define ASN1_GENERALIZED_TIME_LEN (sizeof("YYYYMMDDHHMMSSZ")-1)
int asn1_utc_time_to_der_ex(int tag, time_t tv, uint8_t **out, size_t *outlen);
int asn1_utc_time_from_der_ex(int tag, time_t *tv, const uint8_t **in, size_t *inlen);
#define asn1_utc_time_to_der(tv,out,outlen) asn1_utc_time_to_der_ex(ASN1_TAG_UTCTime,tv,out,outlen)
#define asn1_utc_time_from_der(tv,in,inlen) asn1_utc_time_from_der_ex(ASN1_TAG_UTCTime,tv,in,inlen)
#define asn1_implicit_utc_time_to_der(i,tv,out,outlen) asn1_utc_time_to_der_ex(ASN1_TAG_IMPLICIT(i),tv,out,outlen)
#define asn1_implicit_utc_time_from_der(i,tv,in,inlen) asn1_utc_time_from_der_ex(ASN1_TAG_IMPLICIT(i),tv,in,inlen)
int asn1_generalized_time_to_der_ex(int tag, time_t tv, uint8_t **out, size_t *outlen);
int asn1_generalized_time_from_der_ex(int tag, time_t *tv, const uint8_t **in, size_t *inlen);
#define asn1_generalized_time_to_der(tv,out,outlen) asn1_generalized_time_to_der_ex(ASN1_TAG_GeneralizedTime,tv,out,outlen)
#define asn1_generalized_time_from_der(tv,in,inlen) asn1_generalized_time_from_der_ex(ASN1_TAG_GeneralizedTime,tv,in,inlen)
#define asn1_implicit_generalized_time_to_der(i,tv,out,outlen) asn1_generalized_time_to_der_ex(ASN1_TAG_IMPLICIT(i),tv,out,outlen)
#define asn1_implicit_generalized_time_from_der(i,tv,in,inlen) asn1_generalized_time_from_der_ex(ASN1_TAG_IMPLICIT(i),tv,in,inlen)
#define asn1_sequence_to_der(d,dlen,out,outlen) asn1_type_to_der(ASN1_TAG_SEQUENCE,d,dlen,out,outlen)
#define asn1_sequence_from_der(d,dlen,in,inlen) asn1_type_from_der(ASN1_TAG_SEQUENCE,d,dlen,in,inlen)
#define asn1_implicit_sequence_to_der(i,d,dlen,out,outlen) asn1_type_to_der(ASN1_TAG_EXPLICIT(i),d,dlen,out,outlen)
#define asn1_implicit_sequence_from_der(i,d,dlen,in,inlen) asn1_type_from_der(ASN1_TAG_EXPLICIT(i),d,dlen,in,inlen)
#define asn1_set_to_der(d,dlen,out,outlen) asn1_type_to_der(ASN1_TAG_SET,d,dlen,out,outlen)
#define asn1_set_from_der(d,dlen,in,inlen) asn1_type_from_der(ASN1_TAG_SET,d,dlen,in,inlen)
#define asn1_implicit_set_to_der(i,d,dlen,out,outlen) asn1_type_to_der(ASN1_TAG_EXPLICIT(i),d,dlen,out,outlen)
#define asn1_implicit_set_from_der(i,d,dlen,in,inlen) asn1_type_from_der(ASN1_TAG_EXPLICIT(i),d,dlen,in,inlen)
#define asn1_implicit_to_der(i,d,dlen,out,outlen) asn1_type_to_der(ASN1_TAG_IMPLICIT(i),d,dlen,out,outlen)
#define asn1_implicit_from_der(i,d,dlen,in,inlen) asn1_type_from_der(ASN1_TAG_IMPLICIT(i),d,dlen,in,inlen)
int asn1_header_to_der(int tag, size_t dlen, uint8_t **out, size_t *outlen);
#define asn1_implicit_header_to_der(i,dlen,out,outlen) asn1_header_to_der(ASN1_TAG_EXPLICIT(i),dlen,out,outlen)
#define asn1_octet_string_header_to_der(dlen,out,outlen) asn1_header_to_der(ASN1_TAG_OCTET_STRING,dlen,out,outlen)
#define asn1_sequence_header_to_der(dlen,out,outlen) asn1_header_to_der(ASN1_TAG_SEQUENCE,dlen,out,outlen)
#define asn1_implicit_sequence_header_to_der(i,dlen,out,outlen) asn1_header_to_der(ASN1_TAG_EXPLICIT(i),dlen,out,outlen)
#define asn1_set_header_to_der(dlen,out,outlen) asn1_header_to_der(ASN1_TAG_SET,dlen,out,outlen)
#define asn1_implicit_set_header_to_der(i,dlen,out,outlen) asn1_header_to_der(ASN1_TAG_EXPLICIT(i),dlen,out,outlen)
#define asn1_explicit_header_to_der(i,dlen,out,outlen) asn1_header_to_der(ASN1_TAG_EXPLICIT(i),dlen,out,outlen)
#define asn1_explicit_to_der(i,d,dlen,out,outlen) asn1_type_to_der(ASN1_TAG_EXPLICIT(i),d,dlen,out,outlen)
#define asn1_explicit_from_der(i,d,dlen,in,inlen) asn1_type_from_der(ASN1_TAG_EXPLICIT(i),d,dlen,in,inlen)
// d,dlen 是 SEQUENCE OF, SET OF 中的值
int asn1_types_get_count(const uint8_t *d, size_t dlen, int tag, size_t *cnt);
int asn1_types_get_item_by_index(const uint8_t *d, size_t *dlen, int tag,
int index, const uint8_t **item_d, size_t *item_dlen);
int asn1_sequence_of_int_to_der(const int *nums, size_t nums_cnt, uint8_t **out, size_t *outlen);
int asn1_sequence_of_int_from_der(int *nums, size_t *nums_cnt, const uint8_t **in, size_t *inlen);
int asn1_sequence_of_int_print(FILE *fp, int fmt, int ind, const char *label, const uint8_t *d, size_t dlen);
typedef struct {
int oid;
char *name;
uint32_t *nodes;
size_t nodes_cnt;
int flags;
char *description;
} ASN1_OID_INFO;
const ASN1_OID_INFO *asn1_oid_info_from_name(const ASN1_OID_INFO *infos, size_t count, const char *name);
const ASN1_OID_INFO *asn1_oid_info_from_oid(const ASN1_OID_INFO *infos, size_t count, int oid);
int asn1_oid_info_from_der_ex(const ASN1_OID_INFO **info, uint32_t *nodes, size_t *nodes_cnt,
const ASN1_OID_INFO *infos, size_t count, const uint8_t **in, size_t *inlen);
int asn1_oid_info_from_der(const ASN1_OID_INFO **info,
const ASN1_OID_INFO *infos, size_t count, const uint8_t **in, size_t *inlen);
int asn1_check(int expr);
#if __cplusplus
}
#endif
#endif
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