[strongSwan] RNGs and OpenSSL

[Noel Kuntze]

That those are all the options you can set.

The first plugin that provides a feature is used. rdrand will only be used as PRNG, if it is loaded earlier than openssl.

If a plugin uses another plugin's PRNG implementation depends on the exact code.

On 09.11.2017 21:42, Jafar Al-Gharaibeh wrote:
> What about?
> 
> what if I enable rdrand above does that  become  the default for all random numbers used by strongswan ignoring OpenSSL's RNG?
> 
> Does enabling those other RNG plugins have any effect on OpenSSL itself? I.e is there  a way to set OpenSSL's RNG directly from Strongswan?
> 
> 
> 
> On 11/9/2017 2:39 PM, Noel Kuntze wrote:
>> Correct.
>>
>> On 09.11.2017 21:38, Jafar Al-Gharaibeh wrote:
>>> Noel,
>>>
>>>    Thank you for the quick response. I did search through the documentation and also the source code, but didn't find definitive answers to my questions. Do you  have some pointers?
>>>
>>> I did see this in the man page which addresses my last question:
>>>
>>>   charon.plugins.openssl.engine_id [pkcs11]
>>>                ENGINE ID to use in the OpenSSL plugin.
>>>
>>> charon.plugins.openssl.fips_mode [0]
>>>                Set OpenSSL FIPS mode: disabled(0), enabled(1), Suite B enabled(2).
>>>
>>>
>>> So, are these the only available options?
>>>
>>> Thank you in advance,
>>> Jafar
>>>
>>> On 11/9/2017 2:29 PM, Noel Kuntze wrote:
>>>> Use the power of documentation (man pages).
>>>>
>>>> On 09.11.2017 21:22, Jafar Al-Gharaibeh wrote:
>>>>> Hi,
>>>>>
>>>>>     I am compiling  StrongSwan with these options:
>>>>>
>>>>> --enable-openssl    #enables the OpenSSL crypto plugin.
>>>>> #--enable-rdrand      # don't enable Intel RDRAND random generator plugin.
>>>>> --disable-random    #disable RNG implementation on top of /dev/(u)random.
>>>>>
>>>>> Looking through the code, OpenSSL plugin itself provides an RNG plugin so I thought the above configuration
>>>>> will make sure I'm using the OpenSSL RNG.  Is my assumption correct?
>>>>>
>>>>> what if I enable rdrand above does that  become  the default for all random numbers used by strongswan ignoring OpenSSL's RNG?
>>>>>
>>>>> Does enabling those other RNG plugins have any effect on OpenSSL itself? I.e is there  a way to set OpenSSL's RNG directly from Strongswan?
>>>>>
>>>>> For OpenSSL (and other plugins), where do I find a list of all supported configuration options? for example I found the following example on strongswan website, what other  options I can set/unset there?
>>>>>
>>>>> charon {
>>>>>       load_modular = yes
>>>>>           interfaces_use = eth0
>>>>>       plugins {
>>>>>                   openssl {
>>>>>                        fips_mode = 0
>>>>>                   }
>>>>>           include strongswan.d/charon/*.conf
>>>>>       }
>>>>> }
>>>>>
>>>>>
>>>>>
>>>>> Many Thanks,
>>>>> Jafar
> 

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: OpenPGP digital signature
URL: <http://lists.strongswan.org/pipermail/users/attachments/20171109/2d04006d/attachment-0001.sig>