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Scrypt Validator

Validate password against Scrypt derived key

Key Facts

Category
Cryptography
Input Types
text, number
Output Type
text
Sample Coverage
2
API Ready
Yes

Overview

The Scrypt Validator is a secure utility designed to verify if a provided password matches a specific Scrypt-derived key. By inputting the original salt and the target key alongside the specific Scrypt parameters, you can confirm the integrity and correctness of your password hashing implementation.

When to Use

  • •Verifying that a user-provided password matches a stored Scrypt hash during authentication.
  • •Debugging or auditing password hashing configurations to ensure parameters match production standards.
  • •Testing the compatibility of different Scrypt parameter sets (N, r, p) against existing derived keys.

How It Works

  • •Enter the plaintext password you wish to validate.
  • •Provide the original salt and the target derived key in hexadecimal format.
  • •Adjust the cost factor (N), block size (r), parallelism (p), and key length to match the original hashing environment.
  • •Submit the data to perform the cryptographic comparison and receive a confirmation of the match.

Use Cases

Validating user credentials against a database of Scrypt-hashed passwords.
Troubleshooting failed login attempts caused by mismatched hashing parameters.
Verifying the output of a custom Scrypt implementation against a known reference.

Examples

1. Verifying a User Login

Backend Developer
Background
A user is unable to log in, and the system logs indicate a hash mismatch.
Problem
Need to determine if the issue is the password or the hashing parameters.
How to Use
Input the user's password, the stored salt, and the stored derived key, then adjust the parameters to match the application's config.
Example Config
N=16384, r=8, p=1, keyLength=32
Outcome
The tool confirms whether the provided password generates the expected key, isolating the error to either the input or the configuration.

2. Auditing Hashing Parameters

Security Auditor
Background
The security team is reviewing legacy password storage to ensure it meets current complexity standards.
Problem
Confirming that the stored keys were generated with the intended cost factor.
How to Use
Use a known test password and salt to see if the tool produces the expected key with the current settings.
Example Config
N=32768, r=8, p=1, keyLength=32
Outcome
Successful validation confirms that the current application settings correctly reproduce the stored keys.

Try with Samples

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FAQ

What is Scrypt?

Scrypt is a password-based key derivation function designed to be memory-hard, making it resistant to hardware-accelerated brute-force attacks.

Why do I need to provide the salt?

The salt is a unique, random value used during the hashing process. Without the exact salt used to create the original key, validation will fail.

What happens if my parameters are incorrect?

If the cost factor, block size, or parallelism settings do not match the original hashing configuration, the derived key will not match, even if the password is correct.

Is this tool secure for sensitive passwords?

This tool runs locally in your browser. No data is sent to a server, ensuring your password and keys remain private.

What format should the salt and key be in?

Both the salt and the derived key must be provided in hexadecimal (hex) format.

API Documentation

Request Endpoint

POST /en/api/tools/scrypt-validator

Request Parameters

Parameter Name Type Required Description
password text Yes -
salt text Yes -
derivedKey text Yes -
cost number No -
blockSize number No -
parallelism number No -
keyLength number No -

Response Format

{
  "result": "Processed text content",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}
Text: Text

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-scrypt-validator": {
      "name": "scrypt-validator",
      "description": "Validate password against Scrypt derived key",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=scrypt-validator",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

If you encounter any issues, please contact us at [email protected]