his.input.from);
                data.append('to', this.input.to);
                if(this.input.from == 'PEM' && this.input.to != 'DER'){
                    if(this.input.to != 'PKCS7'){
                        if(this.input.pem_private == null){layer.alert('PEM私钥不能为空');return;}
                        data.append('private', this.input.pem_private);
                    }
                    if(this.input.pem_mycert == null){layer.alert('PEM服务器证书不能为空');return;}
       