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Re: [PATCH] cfg80211: select CRYPTO_SHA256 if needed

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On 11/24/2017 12:35 AM, Johannes Berg wrote:
> From: Johannes Berg <johannes.berg@xxxxxxxxx>
> 
> When regulatory database certificates are built-in, they're
> currently using the SHA256 digest algorithm, so add that to
> the build in that case.
> 
> Also add a note that for custom certificates, one may need
> to add the right algorithms.
> 
> Reported-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
> Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>

Tested-by: Florian Fainelli <f.fainelli@xxxxxxxxx>

Thanks for the quick fix!

> ---
>  net/wireless/Kconfig | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig
> index da91bb547db3..1abcc4fc4df1 100644
> --- a/net/wireless/Kconfig
> +++ b/net/wireless/Kconfig
> @@ -20,6 +20,10 @@ config CFG80211
>  	tristate "cfg80211 - wireless configuration API"
>  	depends on RFKILL || !RFKILL
>  	select FW_LOADER
> +	# may need to update this when certificates are changed and are
> +	# using a different algorithm, though right now they shouldn't
> +	# (this is here rather than below to allow it to be a module)
> +	select CRYPTO_SHA256 if CFG80211_USE_KERNEL_REGDB_KEYS
>  	---help---
>  	  cfg80211 is the Linux wireless LAN (802.11) configuration API.
>  	  Enable this if you have a wireless device.
> @@ -113,6 +117,9 @@ config CFG80211_EXTRA_REGDB_KEYDIR
>  	  certificates like in the kernel sources (net/wireless/certs/)
>  	  that shall be accepted for a signed regulatory database.
>  
> +	  Note that you need to also select the correct CRYPTO_<hash> modules
> +	  for your certificates, and if cfg80211 is built-in they also must be.
> +
>  config CFG80211_REG_CELLULAR_HINTS
>  	bool "cfg80211 regulatory support for cellular base station hints"
>  	depends on CFG80211_CERTIFICATION_ONUS
> 

-- 
Florian



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