init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Crypto/Parameters/MqvPrivateParameters.cs

@@ -0,0 +1,51 @@
+using System;
+
+namespace Org.BouncyCastle.Crypto.Parameters;
+
+public class MqvPrivateParameters : ICipherParameters
+{
+	private readonly ECPrivateKeyParameters staticPrivateKey;
+
+	private readonly ECPrivateKeyParameters ephemeralPrivateKey;
+
+	private readonly ECPublicKeyParameters ephemeralPublicKey;
+
+	public virtual ECPrivateKeyParameters StaticPrivateKey => staticPrivateKey;
+
+	public virtual ECPrivateKeyParameters EphemeralPrivateKey => ephemeralPrivateKey;
+
+	public virtual ECPublicKeyParameters EphemeralPublicKey => ephemeralPublicKey;
+
+	public MqvPrivateParameters(ECPrivateKeyParameters staticPrivateKey, ECPrivateKeyParameters ephemeralPrivateKey)
+		: this(staticPrivateKey, ephemeralPrivateKey, null)
+	{
+	}
+
+	public MqvPrivateParameters(ECPrivateKeyParameters staticPrivateKey, ECPrivateKeyParameters ephemeralPrivateKey, ECPublicKeyParameters ephemeralPublicKey)
+	{
+		if (staticPrivateKey == null)
+		{
+			throw new ArgumentNullException("staticPrivateKey");
+		}
+		if (ephemeralPrivateKey == null)
+		{
+			throw new ArgumentNullException("ephemeralPrivateKey");
+		}
+		ECDomainParameters parameters = staticPrivateKey.Parameters;
+		if (!parameters.Equals(ephemeralPrivateKey.Parameters))
+		{
+			throw new ArgumentException("Static and ephemeral private keys have different domain parameters");
+		}
+		if (ephemeralPublicKey == null)
+		{
+			ephemeralPublicKey = new ECPublicKeyParameters(parameters.G.Multiply(ephemeralPrivateKey.D), parameters);
+		}
+		else if (!parameters.Equals(ephemeralPublicKey.Parameters))
+		{
+			throw new ArgumentException("Ephemeral public key has different domain parameters");
+		}
+		this.staticPrivateKey = staticPrivateKey;
+		this.ephemeralPrivateKey = ephemeralPrivateKey;
+		this.ephemeralPublicKey = ephemeralPublicKey;
+	}
+}