Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

added a way to configure the Symfony PRNG with Doctrine #91

Closed
wants to merge 1 commit into from
Closed

added a way to configure the Symfony PRNG with Doctrine #91

wants to merge 1 commit into from

Conversation

fabpot
Copy link
Member

@fabpot fabpot commented Jul 5, 2012

This should be merged only after/if symfony/symfony#4763 is merged.

</parameters>

<services>
<service id="security.doctrine.seed_provider" class="%security.doctrine.seed_provider.class%">
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

shouldn't it be doctrine.security.* to follow the best practices for the service naming ?

Copy link
Member Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

right, fixed. Thanks.

Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

and this service could be private as it will be used through an alias anyway

@fabpot
Copy link
Member Author

fabpot commented Jul 5, 2012

Closing for now as I've removed the Doctrine classes in Symfony.

@fabpot fabpot closed this Jul 5, 2012
fabpot added a commit to symfony/symfony that referenced this pull request Oct 28, 2012
This PR was merged into the master branch.

Commits
-------

aecc9b1 fixed tests when OpenSsl is not enabled in PHP, renamed a missnamed test, added missing license doc blocks
ca567b5 fixed CS
5cdf696 added a SecureRandomInterface
234f725 rename String to StringUtils
5849855 moved the secure random dep for remember me as a constructor argument
248703f renamed Prng to SecureRandom
c0c8972 simplified the Prng code
e5dc7af moved the secure random class from JMSSecurityExtraBundle to Symfony (closes #3595)

Discussion
----------

[2.2][Security] Add a PRNG (closes #3595)

As per #3595, I have moved the secure random class from JMSSecurityExtraBundle to Symfony.

It has more impact than I expected ;)

As you will see, the implementation has been refactored a bit. The most notable change is that Doctrine support has been moved to the bridge with the addition of a proper Doctrine seed provider (Doctrine is not a special case anymore).

The Doctrine configuration has been moved to the DoctrineBundle: doctrine/DoctrineBundle#91

schmittjoh/JMSSecurityExtraBundle#65 removes the code that has been moved.

---------------------------------------------------------------------------

by Seldaek at 2012-07-05T13:26:01Z

I'm all for more security features, and both the String class & the Prng class for wrapping openssl make a lot of sense IMO, but I fail to see the use of the rest.

If we just want a seed to have a fallback in case openssl is missing, I'd rather have a secret in the config.yml than a million classes to store the same secret in the DB. Maybe I'm missing something though? /cc @schmittjoh

---------------------------------------------------------------------------

by schmittjoh at 2012-07-05T16:32:10Z

Having the configuration in different places (SecurityBundle & DoctrineBundle) feels a bit weird. I would prefer an approach similar to ACL, or the user provider/firewall section with factories. The latter being a bit more work to implement and the former potentially asking for complaints about too tight coupling to Doctrine.

Regarding testing, we probably need to move the disableOpenSsl method to the SecureRandom class in order to allow OpenSSL to be disabled for testing and we also need to change the byte generation algorithm to produce the same output for the same starting seed. I agree that it does not make sense to introduce an interface for SecureRandom as only the seed providers should be replaced.

As for the seed itself, it is constantly updated and does not stay the same as in the beginning. Thus, we need a provider that we can write to, and not only read from. I'm also not sure about using OpenSSL on Windows as I have read enough resources which claimed that the entropy on Windows is not always good (including OpenSSL docs). Always using the custom seed provider at least always ensured proper entropy even if OpenSSL's speed issues have been fixed in newer PHP versions.

---------------------------------------------------------------------------

by stof at 2012-07-05T16:44:24Z

@schmittjoh everything is in SecurityBundle now as it does not use a database anymore

---------------------------------------------------------------------------

by stof at 2012-07-05T16:44:59Z

and there is no seed provider anymore either

---------------------------------------------------------------------------

by schmittjoh at 2012-07-05T16:53:39Z

Not having a seed provider is not such a good idea, but having a file-based seed provider is.

---------------------------------------------------------------------------

by Seldaek at 2012-07-05T17:01:18Z

@schmittjoh why would you need to replace the seed provider? Don't you think that people serious about security to the point that they would want a stronger seed provider would enable openssl instead?

---------------------------------------------------------------------------

by stof at 2012-07-05T17:06:50Z

Well, what I meant is that there is no interchangeable provider anymore. The Prng class uses the file directly.

And btw, I think the Prng class should be mockable for tests, so it should either have an interface or not be final (I vote for adding an interface)

---------------------------------------------------------------------------

by jalliot at 2012-07-09T18:46:12Z

@fabpot @schmittjoh What about using more fallbacks for `openssl_random_pseudo_bytes` like in @Seldaek's post ["Unpredictable hashes for humans"](http://seld.be/notes/unpredictable-hashes-for-humans)?
Trying `mcrypt_create_iv` first might also be faster.

---------------------------------------------------------------------------

by Seldaek at 2012-07-10T08:52:46Z

@jalliot I think mcrypt should be after if you make it use /dev/urandom, not 100% sure but openssl is probably higher quality than urandom.

---------------------------------------------------------------------------

by schmittjoh at 2012-07-10T09:12:07Z

The fallback algorithm that I added should be enough (it passes the
statistical randomness tests).

On Tue, Jul 10, 2012 at 10:52 AM, Jordi Boggiano <
reply@reply.github.com
> wrote:

> @jalliot I think mcrypt should be after if you make it use /dev/urandom,
> not 100% sure but openssl is probably higher quality than urandom.
>
> ---
> Reply to this email directly or view it on GitHub:
> #4763 (comment)
>

---------------------------------------------------------------------------

by stof at 2012-10-13T17:20:06Z

@fabpot please send a PR to the doc so that this can be merged 😃

---------------------------------------------------------------------------

by stof at 2012-10-13T17:22:08Z

hmm, actually, some comments have not been taken into account yet so it is not ready to be merged

---------------------------------------------------------------------------

by stof at 2012-10-27T07:14:43Z

you forgot the SecureRandom file

---------------------------------------------------------------------------

by fabpot at 2012-10-27T08:49:54Z

I think I've addressed all the comments. If everyone agree with the current implementation, I'm going to start updating the documentation.

---------------------------------------------------------------------------

by fabpot at 2012-10-27T10:51:15Z

I've fixed the remaining CS issues.

---------------------------------------------------------------------------

by fabpot at 2012-10-28T07:00:31Z

Documentation is here: symfony/symfony-docs#1858
@fabpot fabpot deleted the prng branch January 8, 2014 07:44
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

Successfully merging this pull request may close these issues.

None yet

2 participants