Why bcrypt hashes cannot be decrypted and what developers should do instead

bcrypt is a one-way hashing function, not an encryption algorithm, meaning there is no key or reverse process to recover the original password from a stored hash. Thousands of monthly searches for 'bcrypt decrypt' tools are either misinformed or outright scams, as no legitimate method exists to reverse a bcrypt digest. To verify a password, developers should use the built-in compare function provided by bcrypt libraries, which re-hashes the candidate password using the embedded salt and checks for a match. If a user forgets their password, the correct approach is a secure reset flow using a time-limited, single-use token — any service that can retrieve or email a plain-text password is storing credentials insecurely. So-called 'cracking' of bcrypt hashes is really brute-force guessing, a process bcrypt deliberately slows down through a configurable cost factor that can be increased as hardware improves.