MqvPrivateParameters
using Org.BouncyCastle.Math.EC.Multiplier;
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(new FixedPointCombMultiplier().Multiply(parameters.G, 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;
}
}
}