/// <summary>
/// Encryptes the session key stored in the SessionKey property
/// and saves the results in the EncryptedSessionKey property.
/// </summary>
/// <remarks>This method also calles EncodeSessionKey so that it
/// does not have been called before calling EncryptSessionKey.
/// <p></p>
/// Please note: calling this function takes some time, because
/// asymmetrical encryption takes some time!
/// </remarks>
/// <param name="pkpPacket">An PublicKeyPacket to which
/// the sessionkey should be encrypted to.</param>
public void EncryptSessionKey(PublicKeyPacket pkpPacket)
{
EncodeSessionKey(pkpPacket.KeyMaterial[0].bitCount());
AsymmetricCipher acCipher = new RSA();
switch (aaPublicAlgorithm) {
case AsymAlgorithms.ElGama_Encrypt_Sign:
case AsymAlgorithms.ElGamal_Encrypt_Only:
acCipher = new ElGamal();
break;
case AsymAlgorithms.RSA_Encrypt_Only:
case AsymAlgorithms.RSA_Encrypt_Sign:
acCipher = new RSA();
break;
default:
throw new System.Exception("The chosen public key algorithm is not yet implemented!");
}
this.bIsUpdated = true;
biEncryptedSessionKey = acCipher.Encrypt(new BigInteger(this.bEncodedSessionKey), pkpPacket);
}
