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Bcrypt Password Hash Generator

Hash and compare text string using bcrypt. Bcrypt is a secure and widely used password-hashing function designed to resist brute-force attacks.

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What Is a Bcrypt Password Hash Generator?

In the digital age, password security is the first line of defense for protecting user data. If you are looking for a reliable, efficient, and privacy-focused hashing solution, our online Bcrypt Password Hash Generator is an ideal choice. A Bcrypt Password Hash Generator is an online tool specifically designed to convert plaintext passwords into secure hash values. It is based on the Blowfish encryption algorithm and incorporates an adaptive hashing mechanism. Unlike traditional algorithms such as MD5 or SHA-1, Bcrypt is purpose-built for password storage and is widely recognized by developers worldwide as one of the most secure hashing standards available today.

How Bcrypt Works

Bcrypt’s strength lies in its unique structure. A typical Bcrypt hash string consists of multiple components, ensuring that even identical passwords produce completely different hash outputs:

  1. Version Identifier (Prefix): For example, $2a$ or $2b$, which specifies the algorithm version in use.
  2. Cost Factor: Also known as the “salt rounds” in the tool. It determines the number of iterations used during the hashing process.
  3. Salt: A randomly generated 128-bit value that is automatically added before hashing to protect against rainbow table attacks.
  4. Hash: The final ciphertext produced after multiple iterations of computation.

Why Use Bcrypt?

Compared with other hashing algorithms, Bcrypt offers several unmatched advantages:

  • Resistance to brute-force attacks: Bcrypt is computationally expensive by design. By increasing the cost factor, it significantly slows down password-guessing attempts.
  • Built-in salting: Bcrypt enforces a unique salt for every password, effectively eliminating rainbow table attacks at their root.
  • Adaptive security: As hardware performance improves, you can simply increase the cost factor to enhance security—without changing your overall system architecture.

Why Choose Our Online Bcrypt Tool?

While many generators exist on the market, our tool stands out in several key areas:

Maximum Privacy Protection

All hashing operations are performed locally in your browser using JavaScript. Your password is never transmitted to our servers. Privacy and security are fundamental principles of our design.

Flexible Cost Factor (1 to 20 Rounds)

We provide an adjustable cost factor ranging from 1 to 20 rounds:

  • Standard security (10 rounds): A well-balanced choice that offers strong security with reasonable performance for most applications.
  • Ultra-high security (20 rounds): Designed for extremely sensitive data. Because the computational cost grows exponentially, 20 rounds may take around one minute to compute, providing strong resistance even against high-performance brute-force attacks.

How to Use the Bcrypt Generator

Generate a professional-grade secure hash in just three simple steps:

  1. Enter the password: Type your original string into the “Password to hash” input field.
  2. Set the cost factor: Adjust the “salt rounds.” The default is 10; increase it if stronger protection is required.
  3. Click Calculate: Click the “Calculate” button, and the secure Bcrypt hash will be displayed instantly in the output field, ready to be copied with one click.

Frequently Asked Questions

Why is Bcrypt so slow?

This is intentional by design. By increasing computation time (proof of work), Bcrypt dramatically raises the cost of brute-force attacks. If calculating 100,000 password attempts takes one minute, large-scale brute-force cracking becomes practically infeasible.

What cost factor should I use?

For most web applications, 10 rounds provide a good balance between security and performance. If your server hardware is strong and security requirements are very high, you may choose 12 rounds or more. This tool supports up to 20 rounds.

Can I recover the original password from the generated hash?

No. Bcrypt is a one-way hashing function and cannot be reversed. This is a critical property for securely storing passwords.

Do you log or store the passwords I enter?

Absolutely not. This tool runs entirely in your local browser and does not make any backend API calls, ensuring that your privacy remains fully under your control.

Why does hashing the same password produce different results each time?

Because Bcrypt generates a random salt for every hash. Even if the plaintext password is the same, a different salt will produce a different hash, effectively protecting against rainbow table attacks.