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
|
/*
* Simple ASN.1 String Types
* (C) 2007 FlexSecure GmbH
* 2008-2011 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include <botan/eac_asn_obj.h>
#include <botan/der_enc.h>
#include <botan/ber_dec.h>
#include <botan/charset.h>
#include <botan/parsing.h>
#include <sstream>
#include <ios>
namespace Botan {
/*
* Create an ASN1_EAC_String
*/
ASN1_EAC_String::ASN1_EAC_String(const std::string& str, ASN1_Tag t) : m_tag(t)
{
m_iso_8859_str = Charset::transcode(str, LOCAL_CHARSET, LATIN1_CHARSET);
if(!sanity_check())
throw Invalid_Argument("ASN1_EAC_String contains illegal characters");
}
/*
* Return this string in ISO 8859-1 encoding
*/
std::string ASN1_EAC_String::iso_8859() const
{
return m_iso_8859_str;
}
/*
* Return this string in local encoding
*/
std::string ASN1_EAC_String::value() const
{
return Charset::transcode(m_iso_8859_str, LATIN1_CHARSET, LOCAL_CHARSET);
}
/*
* Return the type of this string object
*/
ASN1_Tag ASN1_EAC_String::tagging() const
{
return m_tag;
}
/*
* DER encode an ASN1_EAC_String
*/
void ASN1_EAC_String::encode_into(DER_Encoder& encoder) const
{
std::string value = iso_8859();
encoder.add_object(tagging(), APPLICATION, value);
}
/*
* Decode a BER encoded ASN1_EAC_String
*/
void ASN1_EAC_String::decode_from(BER_Decoder& source)
{
BER_Object obj = source.get_next_object();
if(obj.type_tag != m_tag)
{
std::stringstream ss;
ss << "ASN1_EAC_String tag mismatch, tag was "
<< std::hex << obj.type_tag
<< " expected "
<< std::hex << m_tag;
throw Decoding_Error(ss.str());
}
Character_Set charset_is;
charset_is = LATIN1_CHARSET;
try
{
*this = ASN1_EAC_String(
Charset::transcode(ASN1::to_string(obj), charset_is, LOCAL_CHARSET),
obj.type_tag);
}
catch(Invalid_Argument& inv_arg)
{
throw Decoding_Error(std::string("ASN1_EAC_String decoding failed: ") +
inv_arg.what());
}
}
// checks for compliance to the alphabet defined in TR-03110 v1.10, 2007-08-20
// p. 43
bool ASN1_EAC_String::sanity_check() const
{
const byte* rep = reinterpret_cast<const byte*>(m_iso_8859_str.data());
const size_t rep_len = m_iso_8859_str.size();
for(size_t i = 0; i != rep_len; ++i)
{
if((rep[i] < 0x20) || ((rep[i] >= 0x7F) && (rep[i] < 0xA0)))
return false;
}
return true;
}
bool operator==(const ASN1_EAC_String& lhs, const ASN1_EAC_String& rhs)
{
return (lhs.iso_8859() == rhs.iso_8859());
}
ASN1_Car::ASN1_Car(std::string const& str)
: ASN1_EAC_String(str, ASN1_Tag(2))
{}
ASN1_Chr::ASN1_Chr(std::string const& str)
: ASN1_EAC_String(str, ASN1_Tag(32))
{}
}
|
