topic Re: How to use a black key to encrypt/decrypt? in i.MX Processors

How to use a black key to encrypt/decrypt?

jérômepouiller — Tue, 20 Mar 2018 13:35:27 GMT

sm_test.c shows how to manage black keys. However, source code says:

The module does not show the use of key objects as working key register source material at this time.

And indeed, I didn't find any example to use a black key to encrypt or decrypt. Does someone has an example for that?

BR,

Re: How to use a black key to encrypt/decrypt?

Yuri — Wed, 21 Mar 2018 05:50:14 GMT

Hello,

the following may be helpful:

https://community.nxp.com/docs/DOC-335353

Have a great day,
Yuri

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Re: How to use a black key to encrypt/decrypt?

jérômepouiller — Wed, 21 Mar 2018 08:49:08 GMT

This link seems to solve my problem. :smileyhappy:

However, there is something I don't understand. Once a key is loaded/imported to keystore, it should be possible to use it from a job to encrypt/decrypt data, no? Or I missed something?

Re: How to use a black key to encrypt/decrypt?

marius_grigoras — Wed, 21 Mar 2018 09:57:50 GMT

Hi Yuri,

The above example is for a red key blob and not a black key blob.

Thank you,

Marius

Re: How to use a black key to encrypt/decrypt?

Yuri — Fri, 23 Mar 2018 06:57:10 GMT

Hello,

Yes, please refer to the Security Manual(s) for more details.

Regards,

Yuri.