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
137
138
139
140
141
|
using System;
using System.IO;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Asn1
{
/**
* VisibleString object.
*/
public class DerVisibleString
: DerStringBase
{
internal class Meta : Asn1UniversalType
{
internal static readonly Asn1UniversalType Instance = new Meta();
private Meta() : base(typeof(DerVisibleString), Asn1Tags.VisibleString) {}
internal override Asn1Object FromImplicitPrimitive(DerOctetString octetString)
{
return CreatePrimitive(octetString.GetOctets());
}
}
/**
* return a visible string from the passed in object.
*
* @exception ArgumentException if the object cannot be converted.
*/
public static DerVisibleString GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is DerVisibleString derVisibleString)
return derVisibleString;
if (obj is IAsn1Convertible asn1Convertible)
{
if (!(obj is Asn1Object) && asn1Convertible.ToAsn1Object() is DerVisibleString converted)
return converted;
}
else if (obj is byte[] bytes)
{
try
{
return (DerVisibleString)Meta.Instance.FromByteArray(bytes);
}
catch (IOException e)
{
throw new ArgumentException("failed to construct visible string from byte[]: " + e.Message);
}
}
throw new ArgumentException("illegal object in GetInstance: " + Platform.GetTypeName(obj));
}
/**
* return a visible string from a tagged object.
*
* @param taggedObject the tagged object holding the object we want
* @param declaredExplicit true if the object is meant to be explicitly tagged false otherwise.
* @exception ArgumentException if the tagged object cannot be converted.
*/
public static DerVisibleString GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)
{
return (DerVisibleString)Meta.Instance.GetContextInstance(taggedObject, declaredExplicit);
}
private readonly byte[] m_contents;
public DerVisibleString(string str)
{
if (str == null)
throw new ArgumentNullException("str");
m_contents = Strings.ToAsciiByteArray(str);
}
public DerVisibleString(byte[] contents)
: this(contents, true)
{
}
internal DerVisibleString(byte[] contents, bool clone)
{
if (null == contents)
throw new ArgumentNullException("contents");
m_contents = clone ? Arrays.Clone(contents) : contents;
}
public override string GetString()
{
return Strings.FromAsciiByteArray(m_contents);
}
public byte[] GetOctets()
{
return Arrays.Clone(m_contents);
}
internal override IAsn1Encoding GetEncoding(int encoding)
{
return new PrimitiveEncoding(Asn1Tags.Universal, Asn1Tags.VisibleString, m_contents);
}
internal override IAsn1Encoding GetEncodingImplicit(int encoding, int tagClass, int tagNo)
{
return new PrimitiveEncoding(tagClass, tagNo, m_contents);
}
internal sealed override DerEncoding GetEncodingDer()
{
return new PrimitiveDerEncoding(Asn1Tags.Universal, Asn1Tags.VisibleString, m_contents);
}
internal sealed override DerEncoding GetEncodingDerImplicit(int tagClass, int tagNo)
{
return new PrimitiveDerEncoding(tagClass, tagNo, m_contents);
}
protected override bool Asn1Equals(Asn1Object asn1Object)
{
DerVisibleString that = asn1Object as DerVisibleString;
return null != that
&& Arrays.AreEqual(this.m_contents, that.m_contents);
}
protected override int Asn1GetHashCode()
{
return Arrays.GetHashCode(m_contents);
}
internal static DerVisibleString CreatePrimitive(byte[] contents)
{
return new DerVisibleString(contents, false);
}
}
}
|
