Bcrypt Password Generator

Generate and verify bcrypt hashes online

Generate Hash

High security - suitable for production

Verify Hash

Bcrypt Password Generator

The Bcrypt Password Generator is an essential tool for anyone dealing with user authentication, password storage, or system security. It allows you to generate bcrypt hashes from plain text passwords and verify hashes against their original strings with ease. Built to support modern web and app security standards, this tool uses a cost factor (also called rounds) to determine how computationally intensive the hashing should be — giving you control over security and performance.

Key Features

FeatureDescription
 Secure HashingGenerates bcrypt hashes with high-security standards
 Adjustable Cost FactorChoose the number of rounds (e.g., 10–14) to control computational cost
 Hash VerificationCompare a plain text input with an existing bcrypt hash
 Clear InputQuickly clear password or hash fields for new operations
 Masked Input SupportToggle visibility of password or original input for better usability
 Stateless OperationNo data is stored — ensures full privacy and compliance
 Browser-Based ToolUse it online without installing anything
Mobile FriendlyFully responsive design for smartphones and tablets
 Real-Time Hash GenerationInstant feedback as soon as you enter a password and cost factor
🧩 Supports All Character SetsAccepts symbols, unicode, and multilingual input

Advantages of Using This Tool

  • Strong Security for Production Environments
    Bcrypt is designed to protect passwords in high-risk systems, including banking and healthcare applications.

  • Mitigates Brute-Force and Dictionary Attacks
    Due to its slow hashing and salting, even powerful attackers cannot easily break bcrypt-hashed passwords.

  • Customizable Cost Factor
    Increase the cost as CPU power grows over time to maintain strong protection.

  • Developer-Friendly Interface
    Developers can test password hashing and validation without writing code or running servers.

  • Free and Instant Access
    No signup or installation required — just open the tool and start generating or verifying.

  • Prevents Data Breaches
    Even if a hashed password database is stolen, attackers cannot reverse-engineer the original passwords easily.

  • Privacy-Focused
    No input data is saved or logged, ensuring full confidentiality of your sensitive information.

Use Cases

Use CaseDescription
 Password Hashing for Login SystemsHash user passwords before storing in a database
 Testing Hash Matching in ApplicationsDevelopers verify that bcrypt match logic works in their apps
 Identity and Access Management (IAM)Safeguard user credentials in secure user identity systems
 Client-Side Password ValidationValidate hashed passwords directly in browser during front-end development
 Security Audits and Penetration TestingTest resilience of authentication logic in web apps
 DevOps and Infrastructure ScriptsHash hardcoded passwords in automation scripts securely
 Educational ToolTeach or demonstrate how secure password hashing works

How It Works

  • Password Input
    Type your password in the “Password” field. You can toggle visibility to see what you’re typing.

  • Set Rounds (Cost Factor)
    Adjust the rounds (typically between 10–14). More rounds = more secure, but also slower.

  • Generate Hash
    Click the “Generate Hash” button. A secure bcrypt hash appears immediately.

  • Verify Hash
    To test whether a plain text password matches a bcrypt hash, enter the hash and original text, then click “Verify Hash.” You’ll get a true/false result.

  • Clear All
    Use the “Clear All” button to reset all fields and start over.

Importance of Bcrypt in Modern Security

  • Salted and Slow by Design: Every bcrypt hash includes a unique salt, and the algorithm’s slowness is intentional to counter modern GPU/ASIC-powered cracking.

  • Adaptive Over Time: As computing power increases, the cost factor can be increased to maintain security levels.

  • Resists Common Attacks: Unlike outdated algorithms (e.g., MD5, SHA1), bcrypt is purpose-built for storing passwords safely.

Common Mistakes to Avoid

  • Storing plain text passwords
    This exposes users to major security risks if the database is ever compromised.
    Always hash and salt passwords before storing.

  • Using outdated hash functions like MD5 or SHA1
    These are fast and easily cracked with modern tools.
    Use bcrypt, PBKDF2, or Argon2 for password hashing.

  • Setting a very low cost factor (e.g., 4–6)
    A low cost means weak resistance against brute-force attacks.
    Use a cost factor of at least 12 for production environments.

  • Hardcoding bcrypt hashes in client-side code
    This can expose hashes to attackers and enable replay attacks.
    Hash passwords on the server side only.

  • Using the same salt for every password
    Repeating salts makes your hashes vulnerable to rainbow table attacks.
    Generate a new random salt for each password using secure methods.

  • Not verifying hash match logic before deployment
    If you don’t test hash verification correctly, users may be locked out.
    Test both hash() and verify() functions thoroughly in development.

  • Assuming hashing = encryption
    Bcrypt is not reversible. Confusing hashing with encryption may lead to wrong implementations.
    Remember: hashing is one-way, encryption is reversible.

  • Logging or printing sensitive password/hash data
    Accidentally exposing hashes in logs or console outputs can create major risks.
    Avoid logging any passwords or hashes, even for debugging.

  • Not keeping bcrypt libraries up to date
    Old libraries may contain bugs or security vulnerabilities.
    Update dependencies and monitor for CVEs (Common Vulnerabilities and Exposures).

FAQs About Bcrypt Password Generator