Control Optimus output size

[PedroEFLourenco]

Is it possible to limit the digit number of the optimus obfuscation output?
Like, generate obfuscated ids with up to 7digits.

I understand this would limit the number of possible ids, but it would still be helpful for my use-case.

[pjebs]

Try and modify MAX_INT to 2^N.

[PedroEFLourenco]

I don't really know what that means in practical terms, my math is pretty rusty.
That being said, I changed it to the upper bound of numbers I wanted (9999999), and ran the example like this (ignore the package names, its just because I copied the code to some other project I have for testing stuff):

mod_inverse := optimus_go.ModInverse(4161499)
o := optimus_go.New(4161499, mod_inverse, 493244)

new_id := o.Encode(15) 
fmt.Println(new_id)

orig_id := o.Decode(new_id)
fmt.Println(orig_id)

Which didn't really work, since it gave this output:

10457833
8951311

So either I am doing something wrong, or it didn't work as expected.

[pjebs]

It has to be a power of 2.

[PedroEFLourenco]

Thank you for the reply.
Tried it now with the same values but with MAX_INT set to the highest power of 2 that has 7 or less (8881852), but it still didn't work as expected

The results were:

8881852
0

[pjebs]

Can you show me on go playground

[PedroEFLourenco]

Yes, sure. Here it is: https://go.dev/play/p/op2AXGK8_xm

[pjebs]

I mean your code

[PedroEFLourenco]

Yes, the code is in the main function inside the go playground I linked above.

[pjebs]

Maybe the mod function assumes int64

[hzmsrv]

how to support int64?