Force 2011 Key InformationThe key on the Megatouch Force 2011 holds 1024 bytes of data. It holds configuration data and must be encrypted properly with a symmetric key that is generated from the Dallas key's serial number. This data is XOR encrypted in blocks of 6 bytes. The encryption key is 6 bytes. It is an XOR of 6 bytes of the serial number with 6 bytes of "magic data" (4e 56 49 36 3d 39). To determine the encryption key used for any Dallas Key, perform the following steps.
|1||Write the key serial number||E0 00 40 00 00 10 00 8C|
|2||Remove the first and last byte||00 40 00 00 10 00|
|3||Write down the magic number||4e 56 49 36 3d 39|
|4||XOR the values from step 2 and 3||4e 16 49 36 2d 39|
|The results of the XOR in step 4 are your encryption key||4e 16 49 36 2d 39|
Encrypting/decrypting the dataThe plain text configuration data is encrypted via XOR in 6 byte blocks with the key generated in the step above. The one exception is that bytes 18-21 should be encrypted separately and the with only the first 4 bytes of the key.
You will know if you decrypted the key correctly if you see the following ASCII strings in the decrypted key data at some point (assuming a US region key)