blob: 1351b94cfc4900391fdd2f6eae0dc52da50c7436 (
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
|
using System;
using Org.BouncyCastle.Math;
namespace Org.BouncyCastle.Asn1.Pkcs
{
public class Pbkdf2Params
: Asn1Encodable
{
private readonly Asn1OctetString octStr;
private readonly DerInteger iterationCount;
private readonly DerInteger keyLength;
public static Pbkdf2Params GetInstance(
object obj)
{
if (obj == null || obj is Pbkdf2Params)
return (Pbkdf2Params)obj;
if (obj is Asn1Sequence)
return new Pbkdf2Params((Asn1Sequence)obj);
throw new ArgumentException("Unknown object in factory: " + obj.GetType().FullName, "obj");
}
public Pbkdf2Params(
Asn1Sequence seq)
{
if (seq.Count < 2 || seq.Count > 3)
throw new ArgumentException("Wrong number of elements in sequence", "seq");
octStr = (Asn1OctetString)seq[0];
iterationCount = (DerInteger)seq[1];
if (seq.Count > 2)
{
keyLength = (DerInteger)seq[2];
}
}
public Pbkdf2Params(
byte[] salt,
int iterationCount)
{
this.octStr = new DerOctetString(salt);
this.iterationCount = new DerInteger(iterationCount);
}
public Pbkdf2Params(
byte[] salt,
int iterationCount,
int keyLength)
: this(salt, iterationCount)
{
this.keyLength = new DerInteger(keyLength);
}
public byte[] GetSalt()
{
return octStr.GetOctets();
}
public BigInteger IterationCount
{
get { return iterationCount.Value; }
}
public BigInteger KeyLength
{
get { return keyLength == null ? null : keyLength.Value; }
}
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector v = new Asn1EncodableVector(
octStr, iterationCount);
if (keyLength != null)
{
v.Add(keyLength);
}
return new DerSequence(v);
}
}
}
|
