return EVP_des_ede3_cbc();
return EVP_bf_cbc();
	const EVP_CIPHER *getType(int mode) const	{		if(mode == QCA::CBC)			return EVP_des_ede3_cbc();		else if(mode == QCA::CFB)			return EVP_des_ede3_cfb();		else			return 0;	}