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Old 10-28-2003, 08:10 AM   #1
Registered: Jul 2003
Distribution: Debian sarge
Posts: 40

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J2ME and sim


I have a small project in my mind and want to discuss with you how realistic it is and how possible to implement it.

The PIN number is stored in the SIM card of a mobile phone. I am not sure it is stored as clear text or with some hash or encryption mechanism. I assume it is clear text.

So what I want to do is to protect this PIN number with a password. I will never store PIN or Password in the SIM card, but just store their MAC function.

MAC(pin + password)

So when you turn your moobile phone on, you are requested pin and password.

For this purpose, I am planing to use J2ME.

Actually I am good at Java but never used J2ME. My questions is whether it is possile to modify SIM information via J2ME and second question how realistic the project sounds you?

Old 10-28-2003, 09:34 PM   #2
Registered: Dec 2002
Location: Singapore
Distribution: Fedora Core 6
Posts: 647

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Currently there is no API to interface with the SIM card in the J2ME MIDP.
Old 03-29-2004, 09:15 PM   #3
LQ Newbie
Registered: Mar 2004
Posts: 6

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I am trying to compile MIDP 2.0 in redhat 9 of kernel 2.4.18.
As you know,
Firstly I compiled CLDC 1.0.4 before compiling MIDP 2.0 .I am not able to compile even after compiling CLDC succesfully.

Have anyone tried it ?...


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