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
|
using System;
using System.Collections;
namespace Org.BouncyCastle.Crypto.Tls
{
public class PskTlsClient
: AbstractTlsClient
{
protected TlsDHVerifier mDHVerifier;
protected TlsPskIdentity mPskIdentity;
public PskTlsClient(TlsPskIdentity pskIdentity)
: this(new DefaultTlsCipherFactory(), pskIdentity)
{
}
public PskTlsClient(TlsCipherFactory cipherFactory, TlsPskIdentity pskIdentity)
: this(cipherFactory, new DefaultTlsDHVerifier(), pskIdentity)
{
}
public PskTlsClient(TlsCipherFactory cipherFactory, TlsDHVerifier dhVerifier, TlsPskIdentity pskIdentity)
: base(cipherFactory)
{
this.mDHVerifier = dhVerifier;
this.mPskIdentity = pskIdentity;
}
public override int[] GetCipherSuites()
{
return new int[]
{
CipherSuite.TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256,
CipherSuite.TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA,
CipherSuite.TLS_DHE_PSK_WITH_AES_128_CBC_SHA256,
CipherSuite.TLS_DHE_PSK_WITH_AES_128_CBC_SHA
};
}
public override TlsKeyExchange GetKeyExchange()
{
int keyExchangeAlgorithm = TlsUtilities.GetKeyExchangeAlgorithm(mSelectedCipherSuite);
switch (keyExchangeAlgorithm)
{
case KeyExchangeAlgorithm.DHE_PSK:
case KeyExchangeAlgorithm.ECDHE_PSK:
case KeyExchangeAlgorithm.PSK:
case KeyExchangeAlgorithm.RSA_PSK:
return CreatePskKeyExchange(keyExchangeAlgorithm);
default:
/*
* Note: internal error here; the TlsProtocol implementation verifies that the
* server-selected cipher suite was in the list of client-offered cipher suites, so if
* we now can't produce an implementation, we shouldn't have offered it!
*/
throw new TlsFatalAlert(AlertDescription.internal_error);
}
}
public override TlsAuthentication GetAuthentication()
{
/*
* Note: This method is not called unless a server certificate is sent, which may be the
* case e.g. for RSA_PSK key exchange.
*/
throw new TlsFatalAlert(AlertDescription.internal_error);
}
protected virtual TlsKeyExchange CreatePskKeyExchange(int keyExchange)
{
return new TlsPskKeyExchange(keyExchange, mSupportedSignatureAlgorithms, mPskIdentity, null, mDHVerifier, null,
mNamedCurves, mClientECPointFormats, mServerECPointFormats);
}
}
}
|
