Pure Perl implementation of Digest::MD5?

izy_t has asked for the wisdom of the Perl Monks concerning the following question:

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Re: Pure Perl implementation of Digest::MD5? by Taulmarill (Deacon) on Oct 25, 2003 at 13:05 UTC
hm, i searched at search.cpan.org for "pure perl md5". oh, and look what i found, Digest::MD5::Perl it´s "not an interface (like Digest::MD5) but a Perl implementation of MD5".	[reply]
Re: Pure Perl implementation of Digest::MD5? by batkins (Chaplain) on Oct 25, 2003 at 13:06 UTC
Did you try Digest::Perl::MD5? It would be helpful if you told us what modules you tried, so we'd at least know where to start. The computer can't tell you the emotional story. It can give you the exact mathematical design, but what's missing is the eyebrows. - Frank Zappa	[reply]
Re: Re: Pure Perl implementation of Digest::MD5? by izy_t (Novice) on Oct 25, 2003 at 13:29 UTC
I tried both the Digest::Perl::MD5 modules that you get by a search for "MD5" on cpan (one by Steve A Fink and the other by Christian Lackas). I could get neither of them to work.	[reply]
Re: Re: Re: Pure Perl implementation of Digest::MD5? by batkins (Chaplain) on Oct 25, 2003 at 14:50 UTC
Well..........what happened? The computer can't tell you the emotional story. It can give you the exact mathematical design, but what's missing is the eyebrows. - Frank Zappa	[reply]
Re: Pure Perl implementation of Digest::MD5? by ptkdb (Monk) on Oct 25, 2003 at 14:51 UTC
Are you expecting alot of traffic and MD5 checking on this site? MD5 is a VERY intensive block of calculations. The perl version promises to be much much slower than the C based version. Things may look fine for a couple of simple test sessions against the server, but when you start to load things up that will change quickly. Your best bet might be to update your CGI installation such that Digest::MD5 is included.	[reply]
Re: Re: Pure Perl implementation of Digest::MD5? by izy_t (Novice) on Oct 27, 2003 at 15:33 UTC
I'm using a demon server which is shared with other users, I don't think I can install and run the C based md5. It is only needed for hashing 8 characters or so of password. When I tried one of the perl based md5, the server still looked in @inc (which I do not have access to) for the md5.pm file. And when I tried the other one, I got an error: "Can't locate object method "new" via package "MD5" at..."	[reply]
Re: Re: Re: Pure Perl implementation of Digest::MD5? by ptkdb (Monk) on Oct 27, 2003 at 20:41 UTC
MD5 processes data in blocks of 64 bytes(512 bits). If you have less than 64 bytes(53 actually since there is padding that has to be done on the last 'bit' and a quad-word added for length at the end) it gets padded out to 64 bytes anyway.	[reply]
Re: Pure Perl implementation of Digest::MD5? by izy_t (Novice) on Jan 03, 2004 at 15:39 UTC
Thanks everyone. I eventually got it working... I ended up using the perl implementation of md5 from cpan The instructions given on cpan tell you to use: `use Digest::MD5; $ctx = Digest::MD5->new;` [download] but that would not work, and a bit of trial and error brought to me this: `use MD5; $ctx = Digest::Perl::MD5->new;` [download] which now works well. I don't know why their instructions didn't work down my end, but if I got it wrong, how and why? And if it is wrong on cpan, does the author need telling?	[reply] [d/l] [select]


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