生成MachineKey

<machineKey decryptionKey="AE6F9A691747E3FCA231FBDC823CA1C94229166CE08D330F" validationKey="74ACBC1D6CFBC3206CBFA8E1BA8E6A8018E8007BDE136A079FA0AF0927B89CB39648737DC19ABAB6E2A4A7DA91002699E74779F24C3BB9AE477479EF596BDC09" validation="SHA1" />