Free Online Bcrypt Password Hasher Generate bcrypt password hashes with configurable cost factor.

The Bcrypt Hash Generator relies on the bcryptjs library to handle the intricacies of generating and verifying bcrypt hashes. Under the hood, it utilizes a Blowfish key schedule that incorporates the input password, salt, and cost factor to produce a secure hash. The cost factor is crucial as it controls the computational overhead of the hash function, with each increment effectively doubling the time required for the operation. When generating a hash, the tool dynamically adjusts the cost factor based on user input, ranging from 4 to 14 rounds, where higher values result in slower but more secure hashes.

In terms of implementation details, the tool uses React state management to handle user input and store generated hashes. The `generateHash` function is responsible for asynchronously generating a bcrypt hash using the provided password and cost factor. This involves importing the bcryptjs library on demand, generating a salt with the specified number of rounds, and then hashing the input password with this salt. If an error occurs during this process, it catches the exception and sets the resulting hash to an error message.

The verification feature works by comparing a given password against a previously generated bcrypt hash using the `bcryptjs.compare` method. This asynchronous operation returns a boolean value indicating whether the provided password matches the stored hash. The tool also uses browser APIs like the clipboard API, specifically the `copyToClipboard` function from the `/lib/utils` module, to enable users to easily copy generated hashes directly to their system's clipboard.

The bcryptjs library itself employs an adaptive hashing approach that iteratively applies the Blowfish key schedule 2^cost times. This means that increasing the cost factor not only affects the computational overhead but also impacts the security of the resulting hash. By allowing users to adjust this cost factor and verify hashes against input passwords, the tool provides a flexible solution for testing and debugging bcrypt implementations in various development environments.