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Read only mode

JavaCard Applet Development Related Questions and Answers.
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javacardbr
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Read only mode

Post by javacardbr » Tue Sep 29, 2015 8:49 am

Please, Can I send an apdu to set the card read only to prevent data deletion?

regards,
Learning every day ;)

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horse dream
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Re: Read only mode

Post by horse dream » Tue Sep 29, 2015 11:52 pm

You can change the authentication keys to achieve your goal and be sure to save the new key in secret.

For APDU command to change the authentication keys, check the GP specification.

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javacardbr
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Re: Read only mode

Post by javacardbr » Wed Sep 30, 2015 7:21 am

horse dream wrote:You can change the authentication keys to achieve your goal and be sure to save the new key in secret.

For APDU command to change the authentication keys, check the GP specification.


Hi horse dream! Thanks for your answer.

I would like to put all the card as read-only without using an authentication key, is it possible?

Cheers,
Learning every day ;)

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horse dream
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Re: Read only mode

Post by horse dream » Thu Oct 01, 2015 11:44 pm

javacardbr wrote:
Hi horse dream! Thanks for your answer.

I would like to put all the card as read-only without using an authentication key, is it possible?

Cheers,


You can also set your own PIN to fit your needs.

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UNKNwYSHSA
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Re: Read only mode

Post by UNKNwYSHSA » Fri Oct 02, 2015 1:47 pm

You can do some authentication, GP auth PIN auth, if authed, card can be modified, otherwise, the card content is read only. as "horse dream" said.
sense and simplicity

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javacardbr
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Re: Read only mode

Post by javacardbr » Fri Oct 02, 2015 4:25 pm

Thanks!
Learning every day ;)

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