red @change="handleFile('pem_private', event)">
                        <label class="custom-file-label" for="customFile1">点击选择文件</label>
                    </div>
                </div>
            </div>
            <div class="form-group" v-show="input.from=='PEM'&&input.to!='DER'">
                <label class="form-label" for="customFileLabel">PEM 服务器证书文件 <span class="text-danger">*</span></label>
                <div class="form-control-wrap">
                    <di