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#1 2018-10-01 09:40:15

Registered: 2017-08-02
Posts: 2

Help with calculating the Master Key

I tried the leaked iclass master key to authenticate my iclass fob and found that my building is using this key! and I accidentally changed the block 3, where the diversified key is stored. Known that the diversified key is calculated by master key and CSN using DES and hash0 algorithm (checked my fob is not using elite), it is really hard to calculate the master key using CSN and diversified key, which means i blocked myself out of the key fob! Here is the CSN and diversified key, can somebody help me to find the master key??

CSN: 52C5E001F9FF12E0
Div key: AE159BD813E055F6


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