On Fri, Feb 8, 2019, 03:58 Gilles Sadowski <gillese...@gmail.com wrote:

> Hello Bruno.
>
> Le ven. 8 févr. 2019 à 02:54, Bruno P. Kinoshita <ki...@apache.org> a
> écrit :
> >
> > Hi,
> >
> > Had a bit of spare time to investigate this one (almost end of Friday
> for me anyway, hooray!).
> >
> > There are two unit tests in Sha512 hanging for me in Eclipse,
> testSha512CryptExplicitCall and testSha512CryptNullData. The code that the
> test uses and hangs in my JVM can be simplified to:
> >
> > ```
> > String salt = B64.getRandomSalt(8);
> > System.out.println(salt); // never seen
> > ```
> >
> > Looking at B64, we have this: `SecureRandom.getInstanceStrong()`, which
> is the random object. Used to randomly pick a letter of the B64 alphabet.
>
> Where is that code?
>
> https://gitbox.apache.org/repos/asf?p=commons-codec.git;a=blob;f=src/main/java/org/apache/commons/codec/digest/B64.java;h=abd83fc34cd3b0df61fb6c0b33772d9cb5f559a7;hb=refs/heads/1_12


That should be an array, not a string IMO.

Gary

>
>
> Gilles
>
> >
> > It appears this one may take a long time in some systems due to low
> entropy. i.e. it tries to gather more random data to give you a really
> strong random... only that it appears to take a long long time for my JVM.
> >
> > Cheers
> > Bruno
> >
> >
> https://tersesystems.com/blog/2015/12/17/the-right-way-to-use-securerandom/
> >
> >
> >
> >
> >
> > On Friday, 8 February 2019, 2:31:35 pm NZDT, Rob Tompkins <
> chtom...@gmail.com> wrote:
> >
> >
> >
> >
> >
> >
> >
> > > On Feb 7, 2019, at 8:17 PM, sebb <seb...@gmail.com> wrote:
> > >
> > > It builds fine on ubuntu trusty with Java 8
> >
> > Agree
> >
> > >
> > >
> https://builds.apache.org/view/A-D/view/Commons/job/Commons-Codec-Adhoc/
> > >
> > > Maybe sprinkle the Sha2Crypt.sha2Crypt method with debug prints to see
> > > where the code is hanging?
> > >
> > > Or can you run the test in an IDE that allows you to interrupt it if
> it hangs?
> > > > > [...]
>
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