Internal Mifare access from internal secure card

[super_beda]

Hi all,
I'm developing a ticketing application using Nokia 6131 and Jcop tools.
I have some questions for who can help me:


- The internal mifare and the internal secure card are two different portion of the internal secure element, is that right? If so, what is the memory dimension for persistent data storage in the secure card?
- It is better to use the internal Mifare memory or the internal Secure card memory to store critical information (like tickets)?
- Is it possible to get access to internal MiFare from a JCOP applet in the internal secure card?

Thanks in advance,
Best regards

[berroto]

I'm also interested in this informations.

Waiting for a reply...

bye
Roberto

[mariosas]

See you local C:\Nokia\Devices\Nokia_6131_NFC_SDK_1_1\docs

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InternalSecureCardExample
InternalSecureCardExample shows how to access and communicate with the internal secure element of the Nokia 6131 device. The example consists of an applet that is running in the secure element and a MIDlet that is running in the device
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[Raluca_]

- The internal mifare and the internal secure card are two different portion of the internal secure element, is that right? If so, what is the memory dimension for persistent data storage in the secure card?

Approximately 65 kB. The overall memory size is 72kB, however some space is required for product specific applications and mifare 4k area.

- It is better to use the internal Mifare memory or the internal Secure card memory to store critical information (like tickets)?

This totally depends on the application type and technical infrastructure of the environment where the application is going to be used. However, the following could be considered:
- Mifare 4k area is just memory with access control, and is typically simpler to implement.
- Java Card provides high security environment and can execute code, which means it can be used for more complex applications. Java Card supports standardized and well known security algorithms.
- Managing several aplications on the Mifare side is challenging.
- On Java Card side, the amount of applications is the amount which can fit into Java Card memory.

[super_beda]

Hi Raluca,
thanx for your reply you have been very clear!
I'm developing a ticketing application that stores ticket codes in the secure element.In the final implementation the user will have to validate these tickets by sending them to a reader at the entrance of the event using NFC.
My idea was to store mifare access key in the secure card and the ticket codes in the in the internal mifare.In that way the user will have to authenticate using a PIN to access the card and the midlet would so retrieve the mifare key and access it.
Do you think this could be a good tradeoff?
Thank tou again,
Andrea