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Devin Jankowski
2023-06-21 12:46:23 -04:00
commit c70248a520
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72
iTechSharp/srcbc/crypto/tls/TlsCipherSuiteManager.cs Normal file
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using System;
using System.IO;
using Org.BouncyCastle.Crypto.Digests;
using Org.BouncyCastle.Crypto.Engines;
using Org.BouncyCastle.Crypto.Modes;
namespace Org.BouncyCastle.Crypto.Tls
{
/// <remarks>
/// A manager for ciphersuite. This class does manage all ciphersuites
/// which are used by MicroTLS.
/// </remarks>
public class TlsCipherSuiteManager
{
private const int TLS_RSA_WITH_3DES_EDE_CBC_SHA = 0x000a;
private const int TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA = 0x0016;
private const int TLS_RSA_WITH_AES_128_CBC_SHA = 0x002f;
private const int TLS_DHE_RSA_WITH_AES_128_CBC_SHA = 0x0033;
private const int TLS_RSA_WITH_AES_256_CBC_SHA = 0x0035;
private const int TLS_DHE_RSA_WITH_AES_256_CBC_SHA = 0x0039;
internal static void WriteCipherSuites(
Stream outStr)
{
TlsUtilities.WriteUint16(2 * 6, outStr);
TlsUtilities.WriteUint16(TLS_DHE_RSA_WITH_AES_256_CBC_SHA, outStr);
TlsUtilities.WriteUint16(TLS_DHE_RSA_WITH_AES_128_CBC_SHA, outStr);
TlsUtilities.WriteUint16(TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA, outStr);
TlsUtilities.WriteUint16(TLS_RSA_WITH_AES_256_CBC_SHA, outStr);
TlsUtilities.WriteUint16(TLS_RSA_WITH_AES_128_CBC_SHA, outStr);
TlsUtilities.WriteUint16(TLS_RSA_WITH_3DES_EDE_CBC_SHA, outStr);
}
internal static TlsCipherSuite GetCipherSuite(
int number,
TlsProtocolHandler handler)
{
switch (number)
{
case TLS_RSA_WITH_3DES_EDE_CBC_SHA:
return new TlsBlockCipherCipherSuite(new CbcBlockCipher(new DesEdeEngine()), new CbcBlockCipher(new DesEdeEngine()), new Sha1Digest(), new Sha1Digest(), 24, TlsCipherSuite.KE_RSA);
case TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA:
return new TlsBlockCipherCipherSuite(new CbcBlockCipher(new DesEdeEngine()), new CbcBlockCipher(new DesEdeEngine()), new Sha1Digest(), new Sha1Digest(), 24, TlsCipherSuite.KE_DHE_RSA);
case TLS_RSA_WITH_AES_128_CBC_SHA:
return new TlsBlockCipherCipherSuite(new CbcBlockCipher(new AesFastEngine()), new CbcBlockCipher(new AesFastEngine()), new Sha1Digest(), new Sha1Digest(), 16, TlsCipherSuite.KE_RSA);
case TLS_DHE_RSA_WITH_AES_128_CBC_SHA:
return new TlsBlockCipherCipherSuite(new CbcBlockCipher(new AesFastEngine()), new CbcBlockCipher(new AesFastEngine()), new Sha1Digest(), new Sha1Digest(), 16, TlsCipherSuite.KE_DHE_RSA);
case TLS_RSA_WITH_AES_256_CBC_SHA:
return new TlsBlockCipherCipherSuite(new CbcBlockCipher(new AesFastEngine()), new CbcBlockCipher(new AesFastEngine()), new Sha1Digest(), new Sha1Digest(), 32, TlsCipherSuite.KE_RSA);
case TLS_DHE_RSA_WITH_AES_256_CBC_SHA:
return new TlsBlockCipherCipherSuite(new CbcBlockCipher(new AesFastEngine()), new CbcBlockCipher(new AesFastEngine()), new Sha1Digest(), new Sha1Digest(), 32, TlsCipherSuite.KE_DHE_RSA);
default:
handler.FailWithError(TlsProtocolHandler.AL_fatal, TlsProtocolHandler.AP_handshake_failure);
/*
* Unreachable Code, failWithError will always throw an exception!
*/
return null;
}
}
}
}