blob: 74d04f7aaa194803773c3f740302584ceca6ca6d (
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
|
using System;
using System.IO;
using Org.BouncyCastle.Math;
using Org.BouncyCastle.Utilities;
using Org.BouncyCastle.Utilities.IO;
namespace Org.BouncyCastle.Bcpg
{
/// <remarks>Basic packet for a PGP public key.</remarks>
public class PublicKeyEncSessionPacket
: ContainedPacket //, PublicKeyAlgorithmTag
{
private int version;
private long keyId;
private PublicKeyAlgorithmTag algorithm;
private byte[][] data;
internal PublicKeyEncSessionPacket(
BcpgInputStream bcpgIn)
{
version = bcpgIn.ReadByte();
keyId |= (long)bcpgIn.ReadByte() << 56;
keyId |= (long)bcpgIn.ReadByte() << 48;
keyId |= (long)bcpgIn.ReadByte() << 40;
keyId |= (long)bcpgIn.ReadByte() << 32;
keyId |= (long)bcpgIn.ReadByte() << 24;
keyId |= (long)bcpgIn.ReadByte() << 16;
keyId |= (long)bcpgIn.ReadByte() << 8;
keyId |= (uint)bcpgIn.ReadByte();
algorithm = (PublicKeyAlgorithmTag) bcpgIn.ReadByte();
switch ((PublicKeyAlgorithmTag) algorithm)
{
case PublicKeyAlgorithmTag.RsaEncrypt:
case PublicKeyAlgorithmTag.RsaGeneral:
data = new byte[][]{ new MPInteger(bcpgIn).GetEncoded() };
break;
case PublicKeyAlgorithmTag.ElGamalEncrypt:
case PublicKeyAlgorithmTag.ElGamalGeneral:
MPInteger p = new MPInteger(bcpgIn);
MPInteger g = new MPInteger(bcpgIn);
data = new byte[][]{
p.GetEncoded(),
g.GetEncoded(),
};
break;
case PublicKeyAlgorithmTag.ECDH:
data = new byte[][]{ Streams.ReadAll(bcpgIn) };
break;
default:
throw new IOException("unknown PGP public key algorithm encountered");
}
}
public PublicKeyEncSessionPacket(
long keyId,
PublicKeyAlgorithmTag algorithm,
byte[][] data)
{
this.version = 3;
this.keyId = keyId;
this.algorithm = algorithm;
this.data = new byte[data.Length][];
for (int i = 0; i < data.Length; ++i)
{
this.data[i] = Arrays.Clone(data[i]);
}
}
public int Version
{
get { return version; }
}
public long KeyId
{
get { return keyId; }
}
public PublicKeyAlgorithmTag Algorithm
{
get { return algorithm; }
}
public byte[][] GetEncSessionKey()
{
return data;
}
public override void Encode(
BcpgOutputStream bcpgOut)
{
MemoryStream bOut = new MemoryStream();
BcpgOutputStream pOut = new BcpgOutputStream(bOut);
pOut.WriteByte((byte) version);
pOut.WriteLong(keyId);
pOut.WriteByte((byte)algorithm);
for (int i = 0; i < data.Length; ++i)
{
pOut.Write(data[i]);
}
pOut.Close();
bcpgOut.WritePacket(PacketTag.PublicKeyEncryptedSession , bOut.ToArray(), true);
}
}
}
|
