Re: [RFC 1/2] shared/aes-cmac: Add support for AES-CMAC-128

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Hi Lukasz,

>>> This patch adds handling AES-CMAC-128 signing as specified in the NIST
>>> Special Publication 800-38B
>>> ---
>>> src/shared/aes-cmac.c | 346 ++++++++++++++++++++++++++++++++++++++++++++++++++
>>> src/shared/aes-cmac.h |  38 ++++++
>>> 2 files changed, 384 insertions(+)
>>> create mode 100644 src/shared/aes-cmac.c
>>> create mode 100644 src/shared/aes-cmac.h
>> 
>> I really like to see it included in src/shared/crypto.c. Lets try that one first. It is meant to provide the whole crypto toolbox for us.
> 
> I tried but it did not look good to me then.
> 
> Anyway, what I need to do is to add to struct bt_crypro a member which
> will contain aes-cmac session data (key, sub keys, sign_counter)
> I need to also mess a bit with bt_crypto_new and add there parameters
> needed to initialize AES-CMAC ?
> Is that a good way?

just initialize AES-CMAC unconditionally in bt_crypto_new. We do that for the random number generator as well.

Regards

Marcel

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