Is it possible for two strings to map to the same tripcode?

>>1462375
You can input unicode characters into the field so maybe since that adds another billion or so odd possibilities?

is it possible that having this image on your computer should make you question what kind of person you have become?

sort yourself out

>>1462385
t. reddit

>>1462385
Sorry but loli posters are the lifeblood of 4chan

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>>1462375
Theoretically yes.
Practically no.
I'm not an expert though.

>>1462375
Yes but its exceedingly rare

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Yes, any hashing function whose output is fixed in size and accepts inputs larger than its inputs will produce collisions.
https://en.wikipedia.org/wiki/Pigeonhole_principle

>>1462519
I'd input those feet in my mouth

>>1462385
I questioned it. The results say I'm pretty happy about it. Thanks for the tip bro, never has being a pedo been more satisfying.

>>1462519
I remember this. But I was too dumb to do programming courses.

>>1462385
>>1462523
I don't get this reasoning, when we look at "grown up" porn we make the distinction between 2D and 3D yet when it comes to loli the reasoning is that it's all the same somehow.

You're not a pedo for liking lolis, you might be one for other reasons though.

>>1462526
>when we look at "grown up" porn we make the distinction between 2D and 3D
If someone said he masturbates to yaoi but isn't a homo would you believe him?

>>1462541
Yes because I sometimes masturbate to po-ju's stuff but other yaoi doesn't excite me. That's because I'm focusing on the art, situation and details instead of the dicks.

gay pedophile alert

>>1462526
We're pedophiles for 2D exclusively.

>>1462375

>>1462519
Tripcodes only hash the first eight characters. So I think the answer to OP's question is no.

てst

>>1463183
Interesting, but you haven't proven that the tripcode hash function does not have any fixed points.

>>1463190
what is the tripcode hash function? do we know? brainlet here

>>1463219
https://github.com/microsounds/tripforce/blob/master/tripforce.c#L62

>>1463183
https://en.wikipedia.org/wiki/Crypt_(C)#Traditional_DES-based_scheme
>In detail, the user's password is truncated to eight characters, and those are coerced down to only 7-bits each; this forms the 56-bit DES key. That key is then used to encrypt an all-bits-zero block, and then the ciphertext is encrypted again with the same key, and so on for a total of 25 DES encryptions.

That would imply a 56-bit input and 64-bit output. But the tripcode drops the first character of the base64-encoded output, leaving only 58 bits. And most significant bits of the first two characters, while ignored by crypt(), can affect the salt used, because they sometimes change which character you get from the step
>Replace any characters outside of range '.' to 'z' with '.'

>>1463357
So the output space is slightly larger than the input space. We can't prove that there most be non-trivial [*] collisions from the pigeonhole principle, but it is very likely.

[*] I call a collision "trivial" if it is caused by trimming the input to 8 characters or ignoring the most significant bits.

testing hirigana

>>1463369

>>1463369
>>1463372
Boy you forgot the #

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Wow! What an amazingly cute umbrella!

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Kogasa always cheers me up!

testing

>>1463399
test #2

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Is long-haired Kogasa fine too?

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Even the mouse likes Kogasa!

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>>1463406

Yes.

>>1463393
Where?

Is it weird i wonder how a blowjob from Kogasa's true body (The umbrella body, not the Tsukumogami body) would feel like?

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looks like loli is this guy's trigger w

>>1463414
You'd best hope that it's not spiky like a cat's tongue.
https://www.youtube.com/watch?v=iAhCWh5TkiM

Anyway, I think they are both her "true" body now.

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>>1463393

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>>1463393
Kogasa's feet!

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>>1463393
>Wow! What an amazingly cute umbrella!
Exterminate

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>>1463419
It's ok, they made up later

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>>1463421

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>>1463422
Like I said, they made up later!

test

>>1462375
Is it possible to determine a lolis favorite position by a single picture?

>>1462375

>page 10
>loli

bump

>>1462375
I'd do her

>>1465021
Would you be gentle?

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This is a very good thread.

>>1463232
Do you know if there's still a discrepancy between 4chan / futaba / 2ch due to character encodings?

>>1462556
You're insane.

#fa

#訛

>>1469732
>>1469734
So there's an example from ignoring the most significant bits.

In Shift-JIS:
fa = 66 61
訛 = e6 61

>>1462375
Yes.
I remember Meriken showing some of the collisions he had.
I can't seem to find the posts, though.

I have tripcodes that say the same thing but don't have exactly the same capitalization.
!trip count

!fortresses 4
!apoapsides 3
!wisecracks 3
!pitilessly 3
!suppurates 3
!dilettanti 3
!chiffonade 3
!bi0hazards 3
!p0lymerise 3
!1nam0ratas 3

>>1462375
loli butt

>>1469952
Any idea if they were similar strings like >>1469903 or true collisions of the hash function?

>>1471153
thank you for posting this

>>1472724
loli butt?

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>>1471809
True collisions.

bump for nerds

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Is there a way to determine the hash function for secure trips and stuff?

pls dont die now

I don't understand why my thread is so popular, but I'm glad you like it.

>>1477576
brute force

>>1477576
Hidden salt, so no. Can't pigeonhole it because we don't know the kind of hash it uses nor the output size in bits.

>>1477853
The old source leak has the details on the hash function:
https://gist.github.com/shanehou/11252285#file-4chan-php-L1924

>>1477867
If I remember correctly, they changed the secure tripcode hasing function after that. Maybe just the salt.

>>1462541
But traps aren't gay.

>>1477869
The format didn't change, only the values, so at the time I assumed it was a salt change, but looking at the code (it trims the string), it could have just have easily been a hash change with the final string size remaining the same.

List of tripcodes showing the change:
http://pageoftext.com/PH_show_page&nm_page=secure_tripcode_dictionary&nm_rev=3
http://pageoftext.com/PH_show_page&nm_page=secure_tripcode_dictionary&nm_rev=4

Eventually we switched to not showing both tripcode and secure tripcode -- not sure why. But I don't think the tripcodes changed at that later point.

testing #a

testing ##a

still consistent with http://pageoftext.com/PH_show_page&nm_page=secure_tripcode_dictionary&nm_rev=4

testing #a#a

>>1462519
>Accepts inputs larger than its inputs
Stupid weeb.

>>1462375

>>1462385
what's wrong with you

>>1462375
Anything is possible when you believe

>>1462375
The bike shorts girl

>>1481911
That's the /qa/ spirit in action

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>>1462385
I now have it on my computer as well

>>1462385
>using /pol/ "sort yourself out" meme
sup reddit

>>1484164
Its a British saying from the 80's, I remember my dad using it when I was a wee anonlet.

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>>1462385
>getting this many triggered weebs

Teach me your ways.

>>1462393
they're really not though

>>1462375
lol