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0 pointsxienze5mo ago0 comments

People really overthink this. You can safely expose internal IDs by doing a symmetric cipher, like a Feistel cipher. Even sequential IDs will appear random.

0 comments

whiskey-one5mo ago

Looks easy on the surface, but the problem is key rotation.

morshu90015mo ago

I didn't know about this problem but was already thinking it sounds even harder. And the resulting IDs are probably quite large.

j / k navigate · click thread line to collapse

0 pointsxienze5mo ago0 comments

People really overthink this. You can safely expose internal IDs by doing a symmetric cipher, like a Feistel cipher. Even sequential IDs will appear random.

0 comments

whiskey-one5mo ago

Looks easy on the surface, but the problem is key rotation.

morshu90015mo ago

I didn't know about this problem but was already thinking it sounds even harder. And the resulting IDs are probably quite large.

j / k navigate · click thread line to collapse