Hash Algorithm

mr_owlssssnap2 · February 14, 2022, 11:18pm

how do we import this into a project?

scratchmodification:

<blocks app="Snap! 7, https://snap.berkeley.edu" version="2"><block-definition s="hash %&apos;text&apos; output length: %&apos;length&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%txt">text</input><input type="%n">20<options>default=20&#xD;256 bits=76&#xD;384 bits=115&#xD;512 bits=152</options></input></inputs><script><block s="doIfElse"><block s="reportIsA"><block var="length"/><l><option>number</option></l></block><script><block s="doIf"><block s="reportOr"><block s="reportLessThan"><block var="length"/><l>8</l></block><block s="reportGreaterThan"><block var="length"/><l>2048</l></block></block><script><block s="doApplyExtension"><l>err_error(msg)</l><list><block s="reportJoinWords"><list><l>The output length provided (</l><block s="reportSum"><block var="length"/><l>0</l></block><l>) is outside the range [8, 2048]</l></list></block></list></block></script></block></script><script><block s="doApplyExtension"><l>err_error(msg)</l><list><block s="reportJoinWords"><list><l>expecting a number but getting a </l><block s="reportTypeOf"><block var="length"/></block></list></block></list></block></script></block><block s="doReport"><block s="reportJoinWords"><block s="reportAtomicMap"><block s="reifyReporter"><autolambda><block s="reportLetter"><l><option>last</option></l><block s="reportRound"><block s="reportProduct"><block s="reportQuotient"><block s="reportDifference"><block s="reportSum"><block s="reportListAttribute"><l><option>length</option></l><block var="list"/></block><block s="reportStringSize"><block var="text"/></block></block><block var="value"/></block><block s="reportSum"><block s="reportMonadic"><l><option>abs</option></l><block s="reportDifference"><block s="reportAtomicCombine"><block var="list"/><block s="reifyReporter"><autolambda><block s="reportSum"><l></l><l></l></block></autolambda><list></list></block></block><block var="index"/></block></block><l>1</l></block></block><l>10000</l></block></block></block></autolambda><list><l>value</l><l>index</l><l>list</l></list></block><block s="reportReshape"><block s="reportAtomicCombine"><block s="reportListAttribute"><l><option>columns</option></l><block s="reportTextSplit"><block s="reportUnicode"><block var="text"/></block><l><option>letter</option></l></block></block><block s="reifyReporter"><autolambda><block s="reportSum"><l></l><l></l></block></autolambda><list></list></block></block><list><block var="length"/></list></block></block></block></block></script></block-definition></blocks>

joecooldoo · February 14, 2022, 11:23pm

Can't import the project on mobile or on a chromebook.

scratchmodification · February 14, 2022, 11:24pm

Just copy the source, open Notepad. Save it as TXT and then go Snap! and import the file.

mr_owlssssnap2 · February 14, 2022, 11:26pm

chrome os doesn't have a notepad
ok...

mr_owlssssnap2 · February 14, 2022, 11:35pm

~~scratch~~ snap can read txt files that have XML in them?

programmer_user · February 14, 2022, 11:40pm

~~https://www.onlinetexteditor.com/~~
https://notepad.js.org/

scratchmodification · February 14, 2022, 11:44pm

Exactly!

mr_owlssssnap2 · February 15, 2022, 12:28am

there is also editpad.org
edit: nvm that used to be editpad

scratchmodification · February 16, 2022, 12:13am

Update

I've entirely rewritten the code. It's more secure and collision-resistant.
For security reasons, I've disabled 8-15 and 257-2048 output length options.

scratchmodification · February 16, 2022, 5:19pm

I tested my hash algorithm, and I found 1 collision:

I don't recommend you to use . This could mess up my algorithm.

Some of my secrets

I also converted the output to HEX base:

What do you think? Will you use my algorithm rather than ?

sqoosh · February 16, 2022, 6:12pm

Wasn't very hard to figure out the third one with trial and error.

scratchmodification · February 16, 2022, 6:47pm

What did you figure out?

sqoosh · February 16, 2022, 7:03pm

You want me to reveal?

scratchmodification · February 16, 2022, 7:15pm

To reveal what?

sqoosh · February 16, 2022, 7:16pm

Your favorite scratch user? I thought this was communicated before. I figured it out.

scratchmodification · February 16, 2022, 7:17pm

Oh! My favorite Snap! user?

sqoosh · February 16, 2022, 7:26pm

Yes. I figured it out.

scratchmodification · February 16, 2022, 7:29pm

But how???

sqoosh · February 16, 2022, 7:30pm

Trial and error.

scratchmodification · February 16, 2022, 7:32pm

Oh! You guessed. Well done!
So who is that user?