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Friday, August 25, 2006


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Visited your blog while searching for something; nice work....keep it up!

Hi Andy,

I am trying to create a test scenario using jPOS.
I have been able to create the ZMK using 3 components that were provided to me.
still I have an encrypted ZPK that needs to be decrypted into 'clear' format.

Regarding the LMK file I need to know if it has some specific format or extension.

I'd really appreciate any suggestions regarding this issue.

Geat work on that Blog !!

How Triple DES Master/Session Encryption is used in retail POS application using POS Terminal like PINPad? I want to understand the sequence starting from PINPad being injected by POS manufacture, then POS application appends the session key during transaction etc. Thanks


Great Blog... I am trying to transfer Keys from 8000 to 9000 .Both will have the same LMK. Any idea on how to go about this..

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