3.4. 重新启用 SHA-1

步骤

1. 将 SHA1 子策略应用到 DEFAULT 加密策略：

   # update-crypto-policies --set DEFAULT:SHA1
   Setting system policy to DEFAULT:SHA1
   Note: System-wide crypto policies are applied on application start-up.
   It is recommended to restart the system for the change of policies
   to fully take place.

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2. 重启系统：

   # reboot

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