Bcrypt Hash Generator

Generate a secure password hash

Input: Password: MyS3curePass! | Salt rounds: 10

Output: A bcrypt hash string that can be stored in an authentication system.

Verify a login candidate

Input: Plain password plus an existing bcrypt hash

Output: A match or no-match result showing whether the provided password corresponds to the stored hash.

Compare cost factors

Input: The same password hashed with rounds 8, 10, and 12

Output: Different bcrypt outputs that illustrate how the algorithm adapts to the chosen work factor.

Hash generation feels slow

Cause: Bcrypt is intentionally designed to be computationally expensive, especially at higher round values.

Fix: This is expected. If you are only testing a workflow, use a lower round count temporarily and raise it appropriately in production.

Verification fails even though the password looks correct

Cause: The input may differ by whitespace, casing, hidden characters, or the stored hash may not correspond to the intended password.

Fix: Check the exact raw input carefully and verify that the bcrypt string came from the correct source system.

I want a general-purpose hash, not password hashing

Cause: Bcrypt is specialized for passwords and may be the wrong tool for a generic fingerprinting use case.

Fix: Use SHA-256 or another general-purpose algorithm when the task is integrity or digest generation rather than credential storage.

Why is bcrypt better than MD5 or SHA-256 for passwords?

Bcrypt is designed specifically for password storage, while MD5 and SHA-256 are general-purpose hashes. Bcrypt is intentionally slow and configurable, which makes brute-force attacks more expensive. That is exactly what you want when defending stored passwords.

What do salt rounds mean in bcrypt?

Salt rounds, also called the cost factor, control how computationally expensive the hashing process is. Higher values are slower but provide stronger resistance against large-scale guessing attacks. The right setting depends on your security goals and acceptable login performance.

Can I verify an existing bcrypt hash here?

Yes. The tool includes a verification mode that checks whether a plain input matches a supplied bcrypt hash. This is useful during authentication testing, debugging, and migration review when you need quick confirmation that a stored hash behaves as expected.

Should I use the same salt rounds for every project?

Not necessarily. The chosen cost factor should reflect your application's performance budget and threat model. A common practical baseline is around 10 to 12, but modern systems may use higher values if the environment can handle the added cost comfortably.

Is bcrypt enough for complete account security?

Bcrypt is an important part of secure password storage, but account security also depends on transport security, rate limiting, MFA, safe reset flows, credential policy, monitoring, and secure application architecture. It is a core building block, not the entire system.