按照MSDN的标准说法:“对密钥进行配置,以便将其用于对 Forms 身份验证 Cookie 数据和视图状态数据进行加密和解密,并将其用于对进程外会话状态标识进行验证。”也就是说Asp.Net的很多加密,都是依赖于machineKey里面的值,例如Forms 身份验证 Cookie、ViewState的加密。默认情况下,Asp.Net的配置是自己动态生成,如果单台服务器当然没问题,但是如果多台服务器负载均衡,machineKey还采用动态生成的方式,每台服务器上的machinekey值不一致,就导致加密出来的结果也不一致,不能共享验证和ViewState,所以对于多台服务器负载均衡的情况,一定要在每台站点配置相同的machineKey。
文章和代码参照:URL
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