blob: ef7f9a38dca9676dbe7af519d1c7cd0959a9ed4d (
plain)
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
|
package org.bouncycastle.asn1;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class BERGenerator
extends ASN1Generator
{
private boolean _tagged = false;
private boolean _isExplicit;
private int _tagNo;
protected BERGenerator(
OutputStream out)
{
super(out);
}
public BERGenerator(
OutputStream out,
int tagNo,
boolean isExplicit)
{
super(out);
_tagged = true;
_isExplicit = isExplicit;
_tagNo = tagNo;
}
public OutputStream getRawOutputStream()
{
return _out;
}
private void writeHdr(
int tag)
throws IOException
{
_out.write(tag);
_out.write(0x80);
}
protected void writeBERHeader(
int tag)
throws IOException
{
if (_tagged)
{
int tagNum = _tagNo | BERTags.TAGGED;
if (_isExplicit)
{
writeHdr(tagNum | BERTags.CONSTRUCTED);
writeHdr(tag);
}
else
{
if ((tag & BERTags.CONSTRUCTED) != 0)
{
writeHdr(tagNum | BERTags.CONSTRUCTED);
}
else
{
writeHdr(tagNum);
}
}
}
else
{
writeHdr(tag);
}
}
protected void writeBERBody(
InputStream contentStream)
throws IOException
{
int ch;
while ((ch = contentStream.read()) >= 0)
{
_out.write(ch);
}
}
protected void writeBEREnd()
throws IOException
{
_out.write(0x00);
_out.write(0x00);
if (_tagged && _isExplicit) // write extra end for tag header
{
_out.write(0x00);
_out.write(0x00);
}
}
}
|