1 files changed, 67 insertions, 0 deletions
diff --git a/Crypto/src/crypto/tls/DefaultTlsAgreementCredentials.cs b/Crypto/src/crypto/tls/DefaultTlsAgreementCredentials.cs
new file mode 100644
index 000000000..2dfe526d1
--- /dev/null
+++ b/Crypto/src/crypto/tls/DefaultTlsAgreementCredentials.cs
@@ -0,0 +1,67 @@
+using System;
+
+using Org.BouncyCastle.Crypto.Agreement;
+using Org.BouncyCastle.Crypto.Parameters;
+using Org.BouncyCastle.Math;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Crypto.Tls
+{
+ public class DefaultTlsAgreementCredentials
+ : TlsAgreementCredentials
+ {
+ protected Certificate clientCert;
+ protected AsymmetricKeyParameter clientPrivateKey;
+
+ protected IBasicAgreement basicAgreement;
+
+ public DefaultTlsAgreementCredentials(Certificate clientCertificate, AsymmetricKeyParameter clientPrivateKey)
+ {
+ if (clientCertificate == null)
+ {
+ throw new ArgumentNullException("clientCertificate");
+ }
+ if (clientCertificate.certs.Length == 0)
+ {
+ throw new ArgumentException("cannot be empty", "clientCertificate");
+ }
+ if (clientPrivateKey == null)
+ {
+ throw new ArgumentNullException("clientPrivateKey");
+ }
+ if (!clientPrivateKey.IsPrivate)
+ {
+ throw new ArgumentException("must be private", "clientPrivateKey");
+ }
+
+ if (clientPrivateKey is DHPrivateKeyParameters)
+ {
+ basicAgreement = new DHBasicAgreement();
+ }
+ else if (clientPrivateKey is ECPrivateKeyParameters)
+ {
+ basicAgreement = new ECDHBasicAgreement();
+ }
+ else
+ {
+ throw new ArgumentException("type not supported: "
+ + clientPrivateKey.GetType().FullName, "clientPrivateKey");
+ }
+
+ this.clientCert = clientCertificate;
+ this.clientPrivateKey = clientPrivateKey;
+ }
+
+ public virtual Certificate Certificate
+ {
+ get { return clientCert; }
+ }
+
+ public virtual byte[] GenerateAgreement(AsymmetricKeyParameter serverPublicKey)
+ {
+ basicAgreement.Init(clientPrivateKey);
+ BigInteger agreementValue = basicAgreement.CalculateAgreement(serverPublicKey);
+ return BigIntegers.AsUnsignedByteArray(agreementValue);
+ }
+ }
+}
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