blob: 5872656a9cbebf31a4d93e24ae6f77ff788d9618 (
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
|
using System;
using System.Globalization;
using System.IO;
using System.Text;
using Org.BouncyCastle.Utilities.Encoders;
namespace Org.BouncyCastle.Asn1.X509
{
/**
* It turns out that the number of standard ways the fields in a DN should be
* encoded into their ASN.1 counterparts is rapidly approaching the
* number of machines on the internet. By default the X509Name class
* will produce UTF8Strings in line with the current recommendations (RFC 3280).
* <p>
* An example of an encoder look like below:
* <pre>
* public class X509DirEntryConverter
* : X509NameEntryConverter
* {
* public Asn1Object GetConvertedValue(
* DerObjectIdentifier oid,
* string value)
* {
* if (str.Length() != 0 && str.charAt(0) == '#')
* {
* return ConvertHexEncoded(str, 1);
* }
* if (oid.Equals(EmailAddress))
* {
* return new DerIA5String(str);
* }
* else if (CanBePrintable(str))
* {
* return new DerPrintableString(str);
* }
* else if (CanBeUTF8(str))
* {
* return new DerUtf8String(str);
* }
* else
* {
* return new DerBmpString(str);
* }
* }
* }
* </pre>
* </p>
*/
public abstract class X509NameEntryConverter
{
/**
* Convert an inline encoded hex string rendition of an ASN.1
* object back into its corresponding ASN.1 object.
*
* @param str the hex encoded object
* @param off the index at which the encoding starts
* @return the decoded object
*/
protected Asn1Object ConvertHexEncoded(
string hexString,
int offset)
{
string str = hexString.Substring(offset);
return Asn1Object.FromByteArray(Hex.Decode(str));
}
/**
* return true if the passed in string can be represented without
* loss as a PrintableString, false otherwise.
*/
protected bool CanBePrintable(
string str)
{
return DerPrintableString.IsPrintableString(str);
}
/**
* Convert the passed in string value into the appropriate ASN.1
* encoded object.
*
* @param oid the oid associated with the value in the DN.
* @param value the value of the particular DN component.
* @return the ASN.1 equivalent for the value.
*/
public abstract Asn1Object GetConvertedValue(DerObjectIdentifier oid, string value);
}
}
|
