Bcrypt Hash Generator
Generate bcrypt password hashes with configurable salt rounds (4-16). Verify existing passwords against bcrypt hashes using secure server-side processing.
How to Use the Bcrypt Hash Generator
- Enter a password in the input field.
- Select the number of salt rounds (higher = slower but more secure).
- Click Generate Hash to create the bcrypt hash.
- To verify a password, switch to the Verify tab, enter the password and hash, and click Verify.
About Bcrypt Hash Generator
Bcrypt is a password hashing function designed by Niels Provos and David Mazieres in 1999, based on the Blowfish cipher. Unlike simple hash functions like SHA-256, bcrypt is specifically designed for password storage. It includes a built-in salt to prevent rainbow table attacks and a configurable cost factor (salt rounds) that makes brute-force attacks computationally expensive. Each increase in salt rounds doubles the computation time. The default of 12 rounds provides a good balance between security and performance. Bcrypt outputs a 60-character string containing the algorithm version, cost factor, salt, and hash. This tool processes hashing server-side since bcrypt requires cryptographic operations not available in browser APIs.
Frequently Asked Questions
Salt rounds (cost factor) determine the computational cost of hashing. Each increment doubles the time required. A value of 12 is recommended for most applications. Higher values provide more security but take longer to compute.
Yes, bcrypt hashing requires server-side processing. The password is sent over HTTPS to our API, hashed immediately, and never stored or logged. The connection is encrypted end-to-end.
SHA-256 is a general-purpose hash function that is very fast to compute, making it vulnerable to brute-force attacks. Bcrypt is intentionally slow and includes built-in salting, making it far more suitable for password storage.