/// <summary>
/// Inits the instance for encryption.
/// </summary>
/// <param name="privateKey">The private key.</param>
/// <param name="publicKey">The public key.</param>
public void InitForDecryption(ECDHPrivateKeyParameters privateKey, ECDHPublicKeyParameters publicKey)
{
_fingerPrint = (byte[]) privateKey.FingerPrint.Clone();
_privateKey = privateKey;
_publicKey = publicKey;
_forEncryption = false;
}
public void InitForEncryption(ISecureRandom random, ECDHPublicKeyParameters publicKey, byte[] fingerPrint, out ECDHPublicKeyParameters ephemeralPublicKey)
{
var genParams = publicKey.CreateKeyGenerationParameters(random, publicKey.HashAlgorithm, publicKey.SymmetricKeyAlgorithm);
var generator = new ECKeyPairGenerator("ECDH");
generator.Init(genParams);
var ephemeralKeyPair = generator.GenerateKeyPair();
_fingerPrint = (byte[])fingerPrint.Clone();
_privateKey = (ECPrivateKeyParameters)ephemeralKeyPair.Private;
_publicKey = publicKey;
_forEncryption = true;
ephemeralPublicKey = (ECDHPublicKeyParameters)ephemeralKeyPair.Public;
}
public ECDHPrivateKeyParameters(IBigInteger d, ECDomainParameters parameters, ECDHPublicKeyParameters publicKeyParameters, byte[] fingerPrint)
: base("ECDH", d, parameters)
{
this.PublicKeyParameters = publicKeyParameters;
this.FingerPrint = (byte[])fingerPrint.Clone();
}
protected bool Equals(ECDHPublicKeyParameters other)
{
return(this.HashAlgorithm == other.HashAlgorithm &&
this.SymmetricKeyAlgorithm == other.SymmetricKeyAlgorithm &&
base.Equals(other));
}
protected bool Equals(ECDHPublicKeyParameters other)
{
return this.HashAlgorithm == other.HashAlgorithm
&& this.SymmetricKeyAlgorithm == other.SymmetricKeyAlgorithm
&& base.Equals(other);
}
public ECDHPrivateKeyParameters(IBigInteger d, ECDomainParameters parameters, ECDHPublicKeyParameters publicKeyParameters, byte[] fingerPrint)
: base("ECDH", d, parameters)
{
this.PublicKeyParameters = publicKeyParameters;
this.FingerPrint = (byte[])fingerPrint.Clone();
}
