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using System;
using System.Collections;
namespace Org.BouncyCastle.Crypto.Tls
{
public abstract class PskTlsClient
: AbstractTlsClient
{
protected TlsPskIdentity mPskIdentity;
public PskTlsClient(TlsPskIdentity pskIdentity)
: this(new DefaultTlsCipherFactory(), pskIdentity)
{
}
public PskTlsClient(TlsCipherFactory cipherFactory, TlsPskIdentity pskIdentity)
: base(cipherFactory)
{
this.mPskIdentity = pskIdentity;
}
public override int[] GetCipherSuites()
{
return new int[] {
CipherSuite.TLS_DHE_PSK_WITH_AES_256_CBC_SHA,
CipherSuite.TLS_DHE_PSK_WITH_AES_128_CBC_SHA,
CipherSuite.TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA,
CipherSuite.TLS_DHE_PSK_WITH_RC4_128_SHA,
CipherSuite.TLS_RSA_PSK_WITH_AES_256_CBC_SHA,
CipherSuite.TLS_RSA_PSK_WITH_AES_128_CBC_SHA,
CipherSuite.TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA,
CipherSuite.TLS_RSA_PSK_WITH_RC4_128_SHA,
CipherSuite.TLS_PSK_WITH_AES_256_CBC_SHA,
CipherSuite.TLS_PSK_WITH_AES_128_CBC_SHA,
CipherSuite.TLS_PSK_WITH_3DES_EDE_CBC_SHA,
CipherSuite.TLS_PSK_WITH_RC4_128_SHA,
};
}
public override TlsKeyExchange GetKeyExchange()
{
switch (mSelectedCipherSuite)
{
case CipherSuite.TLS_PSK_WITH_3DES_EDE_CBC_SHA:
case CipherSuite.TLS_PSK_WITH_AES_128_CBC_SHA:
case CipherSuite.TLS_PSK_WITH_AES_256_CBC_SHA:
case CipherSuite.TLS_PSK_WITH_RC4_128_SHA:
return CreatePskKeyExchange(KeyExchangeAlgorithm.PSK);
case CipherSuite.TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA:
case CipherSuite.TLS_RSA_PSK_WITH_AES_128_CBC_SHA:
case CipherSuite.TLS_RSA_PSK_WITH_AES_256_CBC_SHA:
case CipherSuite.TLS_RSA_PSK_WITH_RC4_128_SHA:
return CreatePskKeyExchange(KeyExchangeAlgorithm.RSA_PSK);
case CipherSuite.TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA:
case CipherSuite.TLS_DHE_PSK_WITH_AES_128_CBC_SHA:
case CipherSuite.TLS_DHE_PSK_WITH_AES_256_CBC_SHA:
case CipherSuite.TLS_DHE_PSK_WITH_RC4_128_SHA:
return CreatePskKeyExchange(KeyExchangeAlgorithm.DHE_PSK);
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 TlsCipher GetCipher()
{
switch (mSelectedCipherSuite)
{
case CipherSuite.TLS_PSK_WITH_3DES_EDE_CBC_SHA:
case CipherSuite.TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA:
case CipherSuite.TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA:
return mCipherFactory.CreateCipher(mContext, EncryptionAlgorithm.cls_3DES_EDE_CBC,
MacAlgorithm.hmac_sha1);
case CipherSuite.TLS_PSK_WITH_AES_128_CBC_SHA:
case CipherSuite.TLS_RSA_PSK_WITH_AES_128_CBC_SHA:
case CipherSuite.TLS_DHE_PSK_WITH_AES_128_CBC_SHA:
return mCipherFactory.CreateCipher(mContext, EncryptionAlgorithm.AES_128_CBC,
MacAlgorithm.hmac_sha1);
case CipherSuite.TLS_PSK_WITH_AES_256_CBC_SHA:
case CipherSuite.TLS_RSA_PSK_WITH_AES_256_CBC_SHA:
case CipherSuite.TLS_DHE_PSK_WITH_AES_256_CBC_SHA:
return mCipherFactory.CreateCipher(mContext, EncryptionAlgorithm.AES_256_CBC,
MacAlgorithm.hmac_sha1);
case CipherSuite.TLS_PSK_WITH_RC4_128_SHA:
case CipherSuite.TLS_RSA_PSK_WITH_RC4_128_SHA:
case CipherSuite.TLS_DHE_PSK_WITH_RC4_128_SHA:
return mCipherFactory.CreateCipher(mContext, EncryptionAlgorithm.RC4_128,
MacAlgorithm.hmac_sha1);
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);
}
}
protected virtual TlsKeyExchange CreatePskKeyExchange(int keyExchange)
{
return new TlsPskKeyExchange(mContext, keyExchange, mPskIdentity);
}
}
}
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