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[问与答] 关于企业 PKI 的廉价方案问题

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业务部门同事想实现 服务器与工控机的之间一些数据上传与下载,需要加密,并保证两者之者是可信任的。
我印象中车企 OTA 有类似场景,但是实施比较昂贵,是自己在企业内部培训一套 PKI ,会有大大小心的各种服务器和设备。
现在问题来了,我们公司是小企业,不可能上那种 PKI.
业务问我,如果是工控机作为服务端,去申请免费证书,这样不也是实现了证书和信任吗?
服务器存工控机的公钥,工控机存自己的私钥不是一样实现加密且信任吗?
感觉没法反驳,好像是这么个道理。

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