[ath9k-devel] Encryption key in mac80211

[ath9k-devel] Encryption key in mac80211

[abhinav narain]

Hi all,
I want encrypt the my framed injected packet with the same key as the
current shared key between the AP and the client.
For all I know the encryption is currently done in hardware (in atheros
cards)
but the session key must be stored in some data structure in mac80211!

Does anyone know where in the mac80211 stack can I access the key ?

Thanks,
Abhinav
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[ath9k-devel] Encryption key in mac80211

[Ben Greear]

On 01/20/2014 06:05 PM, abhinav narain wrote:
> Hi all,
> I want encrypt the my framed injected packet with the same key as the current shared key between the AP and the client.
> For all I know the encryption is currently done in hardware (in atheros cards)
> but the session key must be stored in some data structure in mac80211!
>
> Does anyone know where in the mac80211 stack can I access the key ?

Check out the nohwcrypt module option.  That disables all hardware encryption
for ath9k.

Thanks,
Ben

>
> Thanks,
> Abhinav
>
>
> _______________________________________________
> ath9k-devel mailing list
> ath9k-devel at lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>


-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com

[ath9k-devel] Encryption key in mac80211

[abhinav narain]

Hi Ben,
Thanks for this, I wasn't aware it can be turned off in the wifi chip!
I am suspecting, the encryption will be done in softmac mac80211 susbsytem ?
I see the flag ath9k_modparam_nohwcrypt used for this purpose,
but I can't see where this is hooked into the mac80211! any hints ?

Thanks,
Abhinav


On Mon, Jan 20, 2014 at 6:56 PM, Ben Greear <greearb@candelatech.com> wrote:

> On 01/20/2014 06:05 PM, abhinav narain wrote:
>
>> Hi all,
>> I want encrypt the my framed injected packet with the same key as the
>> current shared key between the AP and the client.
>> For all I know the encryption is currently done in hardware (in atheros
>> cards)
>> but the session key must be stored in some data structure in mac80211!
>>
>> Does anyone know where in the mac80211 stack can I access the key ?
>>
>
> Check out the nohwcrypt module option.  That disables all hardware
> encryption
> for ath9k.
>
> Thanks,
> Ben
>
>
>> Thanks,
>> Abhinav
>>
>>
>> _______________________________________________
>> ath9k-devel mailing list
>> ath9k-devel at lists.ath9k.org
>> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>>
>>
>
> --
> Ben Greear <greearb@candelatech.com>
> Candela Technologies Inc  http://www.candelatech.com
>
>
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[ath9k-devel] Encryption key in mac80211

[abhinav narain]

>
>
> I am suspecting, the encryption will be done in softmac mac80211 susbsytem
> ?
>
I looked at the wpa_supplicant codebase and found  *wpa_ft_install_ptk()*
having the PTK key for encrypting the data packets.

I am not sure if this is the key passed to mac80211 subsystem.
I want to encrypt my injected frame with the same key as that of the
current session
key of the AP i am attached to.

Thoughts, comments ?
-
Abhinav

Thanks,
> Abhinav
>
>
> On Mon, Jan 20, 2014 at 6:56 PM, Ben Greear <greearb@candelatech.com>wrote:
>
>> On 01/20/2014 06:05 PM, abhinav narain wrote:
>>
>>> Hi all,
>>> I want encrypt the my framed injected packet with the same key as the
>>> current shared key between the AP and the client.
>>> For all I know the encryption is currently done in hardware (in atheros
>>> cards)
>>> but the session key must be stored in some data structure in mac80211!
>>>
>>> Does anyone know where in the mac80211 stack can I access the key ?
>>>
>>
>> Check out the nohwcrypt module option.  That disables all hardware
>> encryption
>> for ath9k.
>>
>> Thanks,
>> Ben
>>
>>
>>> Thanks,
>>> Abhinav
>>>
>>>
>>> _______________________________________________
>>> ath9k-devel mailing list
>>> ath9k-devel at lists.ath9k.org
>>> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>>>
>>>
>>
>> --
>> Ben Greear <greearb@candelatech.com>
>> Candela Technologies Inc  http://www.candelatech.com
>>
>>
>
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[ath9k-devel] Encryption key in mac80211

[abhinav narain]

Hi all,
I am still lost where to find the negotiated key by the device and the AP
in mac80211 codebase.
Any suggestions will be greatly appreciated!

Thanks,
Abhinav


On Mon, Jan 20, 2014 at 6:56 PM, Ben Greear <greearb@candelatech.com> wrote:

> On 01/20/2014 06:05 PM, abhinav narain wrote:
>
>> Hi all,
>> I want encrypt the my framed injected packet with the same key as the
>> current shared key between the AP and the client.
>> For all I know the encryption is currently done in hardware (in atheros
>> cards)
>> but the session key must be stored in some data structure in mac80211!
>>
>> Does anyone know where in the mac80211 stack can I access the key ?
>>
>
> Check out the nohwcrypt module option.  That disables all hardware
> encryption
> for ath9k.
>
> Thanks,
> Ben
>
>
>> Thanks,
>> Abhinav
>>
>>
>> _______________________________________________
>> ath9k-devel mailing list
>> ath9k-devel at lists.ath9k.org
>> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>>
>>
>
> --
> Ben Greear <greearb@candelatech.com>
> Candela Technologies Inc  http://www.candelatech.com
>
>
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