blob: 29e2d8bd94b1b7d21e369ff472bc9b33f413107c (
plain) (
blame)
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
|
using System;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Asn1
{
public class DerBoolean
: Asn1Object
{
private readonly byte value;
public static readonly DerBoolean False = new DerBoolean(false);
public static readonly DerBoolean True = new DerBoolean(true);
/**
* return a bool from the passed in object.
*
* @exception ArgumentException if the object cannot be converted.
*/
public static DerBoolean GetInstance(
object obj)
{
if (obj == null || obj is DerBoolean)
{
return (DerBoolean) obj;
}
throw new ArgumentException("illegal object in GetInstance: " + Platform.GetTypeName(obj));
}
/**
* return a DerBoolean from the passed in bool.
*/
public static DerBoolean GetInstance(
bool value)
{
return value ? True : False;
}
/**
* return a Boolean from a tagged object.
*
* @param obj the tagged object holding the object we want
* @param explicitly true if the object is meant to be explicitly
* tagged false otherwise.
* @exception ArgumentException if the tagged object cannot
* be converted.
*/
public static DerBoolean GetInstance(
Asn1TaggedObject obj,
bool isExplicit)
{
Asn1Object o = obj.GetObject();
if (isExplicit || o is DerBoolean)
{
return GetInstance(o);
}
return FromOctetString(((Asn1OctetString)o).GetOctets());
}
public DerBoolean(
byte[] val)
{
if (val.Length != 1)
throw new ArgumentException("byte value should have 1 byte in it", "val");
// TODO Are there any constraints on the possible byte values?
this.value = val[0];
}
private DerBoolean(
bool value)
{
this.value = value ? (byte)0xff : (byte)0;
}
public bool IsTrue
{
get { return value != 0; }
}
internal override IAsn1Encoding GetEncoding(int encoding)
{
return new PrimitiveEncoding(Asn1Tags.Universal, Asn1Tags.Boolean, GetContents(encoding));
}
internal override IAsn1Encoding GetEncodingImplicit(int encoding, int tagClass, int tagNo)
{
return new PrimitiveEncoding(tagClass, tagNo, GetContents(encoding));
}
protected override bool Asn1Equals(
Asn1Object asn1Object)
{
DerBoolean other = asn1Object as DerBoolean;
if (other == null)
return false;
return IsTrue == other.IsTrue;
}
protected override int Asn1GetHashCode()
{
return IsTrue.GetHashCode();
}
public override string ToString()
{
return IsTrue ? "TRUE" : "FALSE";
}
internal static DerBoolean FromOctetString(byte[] value)
{
if (value.Length != 1)
{
throw new ArgumentException("BOOLEAN value should have 1 byte in it", "value");
}
byte b = value[0];
return b == 0 ? False : b == 0xFF ? True : new DerBoolean(value);
}
private byte[] GetContents(int encoding)
{
byte contents = value;
if (Asn1OutputStream.EncodingDer == encoding && IsTrue)
{
contents = 0xFF;
}
return new byte[]{ contents };
}
}
}
|
