Bcrypt Encryption and Verification

Generate Bcrypt Hash

Verify Password & HASH

📖 Description

1. Why is Bcrypt the Preferred Choice for Storing Passwords?

Compared to traditional MD5 or SHA-1, Bcrypt represents a qualitative leap in security:

• Built-in Random Salt (Salting): Even if two users have the same original password, the generated Bcrypt hash values are completely different. This thoroughly defends against "Rainbow Table" attacks.
• Adjustable Computational Cost (Work Factor): Developers can set the "Cost" value to control the encryption speed. As computer hardware performance improves, the Cost value can be increased to resist brute-force attacks and maintain encryption strength.
• One-Way Irreversible: Bcrypt is a hashing algorithm; the original password cannot be derived from the generated hash string. This ensures that even if the database is leaked, users' plaintext passwords remain secure.

2. Core Feature Analysis

This site's tool provides a complete workflow from "encryption generation" to "comparison and verification":

A. Bcrypt Hash Generation

• Customizable Cost (Strength): Supports setting a Cost value between 4 and 31 (recommended value is 10-12), balancing encryption security and server performance.
• One-Click Generation: Input a plaintext password, and the system will automatically generate a standard-compliant Bcrypt string (usually starting with $2a$ or $2b$).

B. Hash Validation & Comparison

• Match Test: Input an existing Bcrypt hash value and a plaintext password to try. The tool will execute complex comparison logic and instantly indicate whether they match.
• Multi-Version Compatibility: Supports validating versions with different prefixes (e.g., $2a$, $2y$, $2b$), ensuring compatibility with hashes generated by various backend frameworks like PHP, Java, Node.js, etc.

C. Privacy Protection (Local Computation)

• Zero Leakage Risk: All Bcrypt encryption and verification logic is executed locally in your browser. Your sensitive passwords are never uploaded to the server; this is our tool's core security bottom line.

3. Bcrypt String Structure Analysis

Understanding the meaning of the generated string helps you better manage your database:

Example: $2a$10$N9qo8uLOickgx2ZMRZoMyeIjZAgcfl7p92ldGxad68LJZdL17lhWy

• $2a$: Algorithm version identifier.
• 10: Cost value (computational strength), indicating $2^{10}$ iterations were performed.
• N9qo8uLO...: The first 22 characters are the automatically generated random salt.
• Remaining part: The actual hash result.

4. Brief Operation Process

Mode One: Generate Encryption

1. Enter text in the "Plaintext Password" field.
2. Set the "Cost Strength" (default is 10).
3. Click "Generate Bcrypt Hash".
4. Copy the generated $2... string and save it to your test environment or database.

Mode Two: Verify & Compare

1. Enter the password to try in the "Plaintext to Verify" field.
2. Paste the encrypted string stored in the database into the "Bcrypt Hash Value" field.
3. Click "Start Verification".
4. The system will visually indicate the result via green (match) or red (no match) feedback.

5. Why Choose This Site's Bcrypt Assistant?

• Standard Algorithm Library: Uses industry-standard libraries. Generated hash values are completely consistent with those from mainstream programming languages (PHP password_hash, Node bcryptjs).
• Debugging Tool: Convenient for developers to quickly verify if login logic is correct or to test encryption time under different strengths.
• Completely Free: No registration required, unlimited usage, compatible with all major browsers.
• Clean Interface: Focuses on security features, free from unnecessary distractions, ensuring concentration during operation.

📖 Recommendation