It is great being able to access functionality in Qt. This appears to be all upside for those of us using jqt. If it were possible to access the Qt functionality from jconsole (and jhs) as well then it would be really compelling. IIUC this is currently not possible?
On Wed, Jul 16, 2014 at 7:34 AM, chris burke <[email protected]> wrote: > The code is from Qt. > > From the docs, http://qt-project.org/doc/qt-5/QCryptographicHash.html, Qt > 5.2 supports MD4, MD5, SHA-1, SHA-224, SHA-256, SHA-384, and SHA-512, so > your first two can easily be added, except on Linux where we are still > using Qt 4.8. > > > On Tue, Jul 15, 2014 at 9:19 AM, 'Pascal Jasmin' via Programming < > [email protected]> wrote: > > > May I suggest also sha256 sha512 and ripemd160? > > > > I assume the underlying code is from openssl. The reason I did not > > include md5 there is that it has been baptised insecure/compromised by > the > > wiki lords http://en.wikipedia.org/wiki/Cryptographic_hash_function. > The > > paper describing the collision attack on md5: > > http://eprint.iacr.org/2009/223.pdf. Its not a craft any replacement > > attack/weakness by any means, but its enough to discourage its use in the > > same sense that "no one ever got fired for buying IBM". > > > > > > > > ________________________________ > > From: chris burke <[email protected]> > > To: Programming forum <[email protected]> > > Sent: Tuesday, July 15, 2014 11:11:01 AM > > Subject: Re: [Jprogramming] md5 > > > > > > getmd5 will be in the next release of JQt (getsha1 is already there). > > > > AFAIK, convert/misc/md5 only works on 32-bit. > > > > > > On Mon, Jul 14, 2014 at 7:10 PM, Raul Miller <[email protected]> > > wrote: > > > > > I've been using the convert/misc/md5 addon, but it is rather slow. > > > > > > Using it on a 140k string on a moderately sized box was taking between > 6 > > > and 7 seconds. And I've got a lot of strings for it to grind through > > (many > > > gigabytes). > > > > > > So I decided I wanted to use compiled code. And, since we don't have a > J > > > compiler (yet), I decided to use C: > > > > > > The first thing I did was look at the source for the md5 on an ubuntu > > > system. That's in coreutils, and it was something of a mess. > > > > > > After backing off from trying to extract the useful parts of that as a > > > shared library, I found that RFC 1321 contains a reference > implementation > > > (which looks like it was the basis for the mess I was trying to work > > > with*). That was clean enough that I could rather easily extract it, > > build > > > it, and get it to work. > > > > > > The result is at https://github.com/rdm/libmd5.so > > > > > > The J test suite ( > > https://github.com/rdm/libmd5.so/blob/master/md5test.ijs > > > ) > > > was also extracted from RFC 1321, except for a couple lines which > define > > > the interface to the compiled code). > > > > > > Note that I'm using this with j602 (the 32 bit version), because that's > > the > > > only version where the sax xml parsing works. And, I've only tested it > on > > > ubuntu 14.04 lts. But if someone else needs a fast md5 implementation, > > > perhaps it won't be too much work to get this working on whatever > system > > > you work with. > > > > > > FYI, > > > > > > -- > > > Raul > > > > > > * P.S. I say "mess" because it has been loaded down with so many layers > > of > > > config toolchain and abstraction that it's really hard to find where > > > anything happens. That's fine for some contexts, but useless for > others. > > > ---------------------------------------------------------------------- > > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > > > > > > > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
