<div dir="auto">Excellent, thanks!</div><div dir="auto">Actually this evolved from code I wrote in 2002 in Squeak (just saw my initials, I didn’t remember), but I haven’t been involved since then and other people took over and growed it (I don’t think the plugin was mine). If garduino doesn’t reply, feel free to take over the mantainance of the Cuis version if you want, or anyone else.</div><div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Sun, Nov 9, 2025 at 22:21 Jeroen Kouwer via Cuis-dev <<a href="mailto:cuis-dev@lists.cuis.st">cuis-dev@lists.cuis.st</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><u></u>
<div>
<p>Hallo Luciano,</p>
<p>Thanks for looking into this issue, and thanks for the hint to
change the #doWithIndex: to #withIndexDo: when using the
MD5NonPrimitive! Also, it took me some time to find out that there
appears to be an MD5Plugin that is doing the main work in the
default situation.</p>
<p>Looking at the current Squeak I notices an MD5WithPrimitive and
some additional initialization calls. I've copied these deltas to
the code offered for Cuis and now it works as expected!</p>
<p>Yeah!</p>
<p>I've made a pull request with these changes on the
Cuis-Smalltalk-Cryptograpy repository [1]. However, I noticed that
garduino hasn't been active on github lately, so my hope is not
very high for the pull request to get accepted. We'll see.</p>
<p>The changes can be viewed in the - at the time of writing only -
pull request of [1], or you can fork my fork [2] of [1] and
checkout the fix/md5-with-primitive branch.</p>
<p>Regards,<br>
Jeroen</p>
<p>[1] <a href="https://github.com/garduino/Cuis-Smalltalk-Cryptography" target="_blank">https://github.com/garduino/Cuis-Smalltalk-Cryptography</a></p>
<p>[2]
<a href="https://github.com/jermus67/Cuis-Smalltalk-Cryptography/tree/fix/md5-with-primitive" target="_blank">https://github.com/jermus67/Cuis-Smalltalk-Cryptography/tree/fix/md5-with-primitive</a></p></div><div>
<div>On 11/9/25 3:08 PM, Luciano
Notarfrancesco via Cuis-dev wrote:<br>
</div>
<blockquote type="cite">
<div dir="auto">Hi Jeroen,</div>
<div dir="auto">I just tried it on mac with the latest Cuis and I
get the same results as you. However, using MD5NonPrimitive
instead of MD5 I get the correct result (note that you will get
a message not understood exception, because it sends the message
#doWithIndex: that doesn’t exist, you just need to replace it
with #withIndexDo:).</div>
<div dir="auto"><br>
</div>
<div><br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sun, Nov 9, 2025 at 05:53
Jeroen Kouwer via Cuis-dev <<a href="mailto:cuis-dev@lists.cuis.st" target="_blank">cuis-dev@lists.cuis.st</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">Hello,<br>
<br>
I'm new to this list and new to Smalltalk development. I'm a
software <br>
engineer by profession and grew up with Unix (SVR4), Pascal
and C. Since <br>
then I've moved to Linux, Java and C++ and although I've
read about <br>
Smaltalk and I have been intrigued with the idea behind it,
I've never <br>
actually programmed in it.<br>
<br>
Until now.<br>
<br>
I've started The Cuis Book, together with the SBE and the
Cuis Cook <br>
Book, and am currently trying to solve the first year of the
Advent of <br>
Code (2015) in Smalltalk (the Cuis version [1]). The first
three days <br>
went really well. The challenge came on day four: having to
use MD5 hash <br>
calculation. Cuis, out of the box, doesn't come with an MD5
class. A <br>
little searching led me to the Cryptography package [2] and
I installed <br>
the package using the File List.<br>
<br>
Side note: This package does not define a feature, so when
next starting <br>
the image (provided having saved it) it throws you into the
debugger. <br>
The package is recognized, but when checking for new
versions it finds <br>
out that there's no feature defined (nil is not a valid
feature) and <br>
this part of opening the image cannot handle that:<br>
```<br>
UndefinedObject(Object)>>doesNotUnderstand:
#isLaterThan:<br>
[] in ChangeSet class>>installNewUpdates:<br>
...<br>
```<br>
However, this can be solved by saving the package (open
Installed <br>
Packeges); saving the package apparently adds the category
as feature to <br>
the *.<a href="http://pck.st" rel="noreferrer" target="_blank">pck.st</a>.<br>
<br>
Back to Cryptography and feature Cuis-System-Hashing (from
the <br>
Cryptography package [2]): I cannot get the MD5 class to
behave as I <br>
expect it to behave. I expect that each call to hashMessage
with the <br>
same message results in the same hash, which it does in
Squeak and Pharo <br>
(after some frustration I did some checking).<br>
<br>
After having loaded the package for the first time and
executing it the <br>
results are as expected:<br>
```<br>
((MD5 new) hashMessage: 'abcdef609043') hex.<br>
'000001DBBFA3A5C83A2D506429C7B00E' .<br>
```<br>
Executing it a second time results in:<br>
```<br>
((MD5 new) hashMessage: 'abcdef609043') hex.<br>
'D1CE4AB38D6D9DC0E1FF789725EFA294' .<br>
```<br>
Each consecutive execution results in a different value,
which is not <br>
what I expected!<br>
<br>
(I've managed to solve day four by resorting to Squeak :o,
sorry...)<br>
<br>
Does anyone has an idea why this calculation keeps on
producing new <br>
values on each execution?<br>
<br>
Regards,<br>
Jeroen Kouwer<br>
<br>
P.S. I have observed the same behavior with Cuis 7.2 [3]<br>
<br>
<br>
[1] <a href="https://github.com/Cuis-Smalltalk/Cuis-Smalltalk-Dev" rel="noreferrer" target="_blank">https://github.com/Cuis-Smalltalk/Cuis-Smalltalk-Dev</a><br>
<br>
[2] <a href="https://github.com/garduino/Cuis-Smalltalk-Cryptography" rel="noreferrer" target="_blank">https://github.com/garduino/Cuis-Smalltalk-Cryptography</a><br>
<br>
[3] <a href="https://github.com/Cuis-Smalltalk/Cuis7-2" rel="noreferrer" target="_blank">https://github.com/Cuis-Smalltalk/Cuis7-2</a><br>
<br>
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