php - How do authentication cookies work? -


i don't understand how authentication cookies work, trying find way implement remember me system in php. sites have looked @ suggest not fool proof system , understand that. anyway suggests creating token random_bytes, storing hashed version of token user id in database, storing token in cookie , comparing on login @ least that's how understand it.

what's stopping finding cookie on computer , copying value logging in websites? sure missing unless contents of cookie encrypted decrypted use slow method less cracked or sha256 can cracked.


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