diff --git a/Crypto/src/crypto/tls/DefaultTlsCipherFactory.cs b/Crypto/src/crypto/tls/DefaultTlsCipherFactory.cs
new file mode 100644
index 000000000..53e3438d9
--- /dev/null
+++ b/Crypto/src/crypto/tls/DefaultTlsCipherFactory.cs
@@ -0,0 +1,73 @@
+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
+{
+ public class DefaultTlsCipherFactory
+ : TlsCipherFactory
+ {
+ public virtual TlsCipher CreateCipher(TlsClientContext context,
+ EncryptionAlgorithm encryptionAlgorithm, DigestAlgorithm digestAlgorithm)
+ {
+ switch (encryptionAlgorithm)
+ {
+ case EncryptionAlgorithm.cls_3DES_EDE_CBC:
+ return CreateDesEdeCipher(context, 24, digestAlgorithm);
+ case EncryptionAlgorithm.AES_128_CBC:
+ return CreateAesCipher(context, 16, digestAlgorithm);
+ case EncryptionAlgorithm.AES_256_CBC:
+ return CreateAesCipher(context, 32, digestAlgorithm);
+ default:
+ throw new TlsFatalAlert(AlertDescription.internal_error);
+ }
+ }
+
+ /// <exception cref="IOException"></exception>
+ protected virtual TlsCipher CreateAesCipher(TlsClientContext context, int cipherKeySize,
+ DigestAlgorithm digestAlgorithm)
+ {
+ return new TlsBlockCipher(context, CreateAesBlockCipher(), CreateAesBlockCipher(),
+ CreateDigest(digestAlgorithm), CreateDigest(digestAlgorithm), cipherKeySize);
+ }
+
+ /// <exception cref="IOException"></exception>
+ protected virtual TlsCipher CreateDesEdeCipher(TlsClientContext context, int cipherKeySize,
+ DigestAlgorithm digestAlgorithm)
+ {
+ return new TlsBlockCipher(context, CreateDesEdeBlockCipher(), CreateDesEdeBlockCipher(),
+ CreateDigest(digestAlgorithm), CreateDigest(digestAlgorithm), cipherKeySize);
+ }
+
+ protected virtual IBlockCipher CreateAesBlockCipher()
+ {
+ return new CbcBlockCipher(new AesFastEngine());
+ }
+
+ protected virtual IBlockCipher CreateDesEdeBlockCipher()
+ {
+ return new CbcBlockCipher(new DesEdeEngine());
+ }
+
+ /// <exception cref="IOException"></exception>
+ protected virtual IDigest CreateDigest(DigestAlgorithm digestAlgorithm)
+ {
+ switch (digestAlgorithm)
+ {
+ case DigestAlgorithm.MD5:
+ return new MD5Digest();
+ case DigestAlgorithm.SHA:
+ return new Sha1Digest();
+ case DigestAlgorithm.SHA256:
+ return new Sha256Digest();
+ case DigestAlgorithm.SHA384:
+ return new Sha384Digest();
+ default:
+ throw new TlsFatalAlert(AlertDescription.internal_error);
+ }
+ }
+ }
+}
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