1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*
* ASN.1 Internals
* (C) 1999-2007 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_ASN1_H_
#define BOTAN_ASN1_H_
#include <botan/secmem.h>
#include <botan/exceptn.h>
namespace Botan {
class BER_Decoder;
class DER_Encoder;
/**
* ASN.1 Type and Class Tags
*/
enum ASN1_Tag {
UNIVERSAL = 0x00,
APPLICATION = 0x40,
CONTEXT_SPECIFIC = 0x80,
CONSTRUCTED = 0x20,
PRIVATE = CONSTRUCTED | CONTEXT_SPECIFIC,
EOC = 0x00,
BOOLEAN = 0x01,
INTEGER = 0x02,
BIT_STRING = 0x03,
OCTET_STRING = 0x04,
NULL_TAG = 0x05,
OBJECT_ID = 0x06,
ENUMERATED = 0x0A,
SEQUENCE = 0x10,
SET = 0x11,
UTF8_STRING = 0x0C,
NUMERIC_STRING = 0x12,
PRINTABLE_STRING = 0x13,
T61_STRING = 0x14,
IA5_STRING = 0x16,
VISIBLE_STRING = 0x1A,
BMP_STRING = 0x1E,
UTC_TIME = 0x17,
GENERALIZED_TIME = 0x18,
UTC_OR_GENERALIZED_TIME = 0x19,
NO_OBJECT = 0xFF00,
DIRECTORY_STRING = 0xFF01
};
/**
* Basic ASN.1 Object Interface
*/
class BOTAN_PUBLIC_API(2,0) ASN1_Object
{
public:
/**
* Encode whatever this object is into to
* @param to the DER_Encoder that will be written to
*/
virtual void encode_into(DER_Encoder& to) const = 0;
/**
* Decode whatever this object is from from
* @param from the BER_Decoder that will be read from
*/
virtual void decode_from(BER_Decoder& from) = 0;
ASN1_Object() = default;
ASN1_Object(const ASN1_Object&) = default;
ASN1_Object & operator=(const ASN1_Object&) = default;
virtual ~ASN1_Object() = default;
};
/**
* BER Encoded Object
*/
class BOTAN_PUBLIC_API(2,0) BER_Object final
{
public:
void assert_is_a(ASN1_Tag, ASN1_Tag);
// public member variable:
ASN1_Tag type_tag, class_tag;
// public member variable:
secure_vector<uint8_t> value;
};
/*
* ASN.1 Utility Functions
*/
class DataSource;
namespace ASN1 {
std::vector<uint8_t> put_in_sequence(const std::vector<uint8_t>& val);
std::string to_string(const BER_Object& obj);
/**
* Heuristics tests; is this object possibly BER?
* @param src a data source that will be peeked at but not modified
*/
bool maybe_BER(DataSource& src);
}
/**
* General BER Decoding Error Exception
*/
class BOTAN_PUBLIC_API(2,0) BER_Decoding_Error : public Decoding_Error
{
public:
explicit BER_Decoding_Error(const std::string&);
};
/**
* Exception For Incorrect BER Taggings
*/
class BOTAN_PUBLIC_API(2,0) BER_Bad_Tag final : public BER_Decoding_Error
{
public:
BER_Bad_Tag(const std::string& msg, ASN1_Tag tag);
BER_Bad_Tag(const std::string& msg, ASN1_Tag tag1, ASN1_Tag tag2);
};
}
#endif
|
