Bcrypt Generator

Generate secure bcrypt hashes for your passwords

10

Higher values are more secure but take longer to compute. Recommended: 10-12

Understanding Bcrypt

Advantages of Bcrypt Over Other Hashing Algorithms

Why use Bcrypt?

Bcrypt is adaptive, meaning it can be made slower over time to resist brute-force attacks as computers get faster.

Beyond just password protection, a bcrypt generator can be especially handy if you're doing cross-browser testing or need to generate a variety of valid bcrypt password hashes for test environments. By adjusting the cost factor (number of rounds), you can create very strong, adaptive passwords or hashes that are intentionally slow to compute. This not only improves real-world security but also allows you to simulate intensive scenarios during testing.

Keep in mind, however, that increasing the number of rounds makes the hashing process more CPU-intensive. While this boosts security, it can also be leveraged to generate slow test cases that might consume a lot of system resources—potentially exposing vulnerabilities to denial of service or resource exhaustion attacks if not managed carefully.

Cost Factor

The cost factor determines how much time is needed to calculate a single hash. Higher cost = more secure but slower.

Practical Implications

The flexibility of bcrypt’s cost factor is especially useful for testing and real-world scenarios. For example, during cross-browser or cross-platform testing, you might need to generate a wide range of valid bcrypt password hashes to simulate different user cases or verify compatibility across systems. Increasing the iteration count can also help you assess how your application handles resource-intensive operations, revealing potential weaknesses against resource exhaustion or denial-of-service attacks.

Potential Risks of High Cost Factors

While increasing the cost factor makes bcrypt more secure by slowing down hash computations, there’s a tradeoff to keep in mind. Setting the rounds too high can mean each password operation takes a lot more time and processing power—not just for attackers, but for your application, too.

This can open doors for:

  • Denial of Service (DoS) Attacks: If your server is overwhelmed with multiple password hashes at a very high cost factor, legitimate users might experience slow logins or even timeouts.
  • Resource Exhaustion: Too many demanding hash calculations can eat up CPU resources, degrading site performance or—even worse—taking down the service entirely.

For production systems, it’s wise to find a balance: strong enough to withstand brute-force attempts, but not so intense that it puts your hardware (or users’ patience) at risk.

How Bcrypt Works

Bcrypt combines the Blowfish encryption algorithm with adaptive hashing, automatically handling salt generation and incorporating the cost factor directly into the hash output.

Bcrypt vs Other Algorithms

Unlike MD5 or SHA-1, bcrypt is specifically designed for password hashing with built-in protection against rainbow table attacks through salting and being computationally intensive.

Password Security Best Practices

Always use bcrypt with 10+ rounds, never store plain text passwords, and consider adding pepper (application-wide secret) for extra security beyond just salting.

Bcrypt in Modern Applications

Bcrypt is supported in most programming languages including Node.js, Python, PHP, Java, and Ruby. It remains a top recommendation by security experts for password storage in 2023.

The Importance of Salting

Bcrypt automatically generates and manages unique salts for each password, preventing identical passwords from producing the same hash and protecting against rainbow table attacks.

Adaptive Nature of Bcrypt

The cost factor makes bcrypt future-proof - as computers get faster, you can increase the rounds to maintain security without changing your hashing algorithm.

Tip: While bcrypt’s adjustable cost factor strengthens security, pushing it too high can cause excessive CPU usage. When running tests that intentionally stress your application’s hashing capabilities, be mindful of potential resource exhaustion—especially in shared or production environments. This property, while excellent for security, can inadvertently lead to performance issues or denial of service if misconfigured.

How to Use the Bcrypt Hash Generator

Integrating the Hash Generator into Your Application

Enter Your Password

  • Adjust the Rounds (Cost Factor).
  • Greater values enhance security but boost computation time.
  • Recommended range: 10–12.

Generate the Hash

  • Press the "Generate bcrypt Hash" button.
  • The utility will generate a secure bcrypt hash according to your input.

Copy the Generated Hash

Your bcrypt hash will be visible in the "Generated Hash" field below. Press the "Copy" button to send it to your clipboard.

Testing Your Bcrypt Hashes and Passwords

Need to verify that a password matches a specific bcrypt hash, or check if your hashing is working correctly?

  • You can use dedicated Bcrypt hash tester tools available from trusted sources like CyberChef or online password utilities. Simply enter your bcrypt hash and the password you want to test—these tools will tell you if they match, without storing your data.
  • For extra caution, always choose reputable sites that handle all processing in your browser, so your passwords never leave your computer.

Additional Developer Tools and Resources

Looking to streamline password management or integrate bcrypt hashing into your workflow? There’s a host of resources available to make your work easier:

  • APIs: Many open API services—like HashiCorp’s Vault or Auth0—offer endpoints for bcrypt hashing and verification, ideal for automating password operations in your applications.
  • Developer Utilities: If you're a fan of tinkering, there are a variety of command-line utilities and standalone bcrypt tools available on platforms like GitHub. These empower you to test hashes, generate salts, and experiment with cost factors outside your main application code.
  • Browser Extensions & Bookmarklets: Easily add quick bcrypt hashing to your browser with Chrome extensions or bookmarklets. These tools let you hash passwords right from your browser toolbar for rapid workflow enhancements.

If you’re building for scale or automation, consider exploring libraries and SDKs for languages such as Python (bcrypt), Node.js (bcrypt.js), and PHP (password_hash), which integrate hashing directly into your application logic.

Whether for prototyping or production usage, these options ensure bcrypt fits seamlessly into your tech stack.

Handy Tips for Using Online Developer Tools

To streamline your workflow when using online developer utilities, here are a few tricks to keep in mind:

  • Pass Input via URL Parameters: Many tools allow you to pre-fill input fields by appending query arguments to the URL. For example, adding can automatically populate the relevant field, saving time during repeated testing.
  • Bookmark Customized Links: Once you’ve set your preferred configurations using query parameters, bookmark the customized URL. This ensures you can revisit your frequently-used tool setups instantly.
  • Leverage Keyboard Shortcuts: Some utilities offer shortcuts (like for copying results) or support tab navigation for quick data entry.
  • Explore Tool Documentation: Check each tool’s help section or documentation. Tools like Postman, JSFiddle, and CyberChef often highlight hidden capabilities or usage tips that can make your tasks quicker and more efficient.
  • Clear Sensitive Information: Always double-check that no sensitive data remains in the browser after using online tools, especially if you’re working on a shared device.

These tips increase productivity and help you get the most out of any online developer resource.

Using the Bcrypt Generator for Cross-Browser Testing

When developing authentication systems, ensuring that password hashing behaves consistently across browsers is important—especially if your tests simulate diverse real-world scenarios. With the bcrypt generator:

  • Create Consistent Hashes for Test Data: You can pre-generate bcrypt password hashes to use in automated or manual test cases, helping you validate login flows or password verification logic in different browsers.
  • Vary Cost Factors: Adjusting the rounds allows you to test how browsers handle passwords with high or low computation requirements, measuring the impact on responsiveness or loading times.
  • Simulate Edge Cases: By generating hashes with very high cost factors, you can observe how your front end handles resource-intensive hashing operations. This can help you uncover potential issues with browser performance, resource usage, or susceptibility to denial-of-service in extreme scenarios.

Integrating these hashes into your test suite helps ensure your application remains robust and secure, regardless of browser or system used during login and registration flows.

This tool runs entirely in your browser. Your password is never sent to any server.