Key Facts
- Category
- Cryptography
- Input Types
- text, number
- Output Type
- text
- Sample Coverage
- 4
- API Ready
- Yes
Overview
The Scrypt Generator is a secure cryptographic tool designed to derive high-strength hashes from passwords using the memory-hard Scrypt key derivation function. By incorporating configurable parameters like cost, block size, and parallelism, it provides a robust defense against brute-force and hardware-accelerated attacks.
When to Use
- •When you need to securely store user passwords in a database using a memory-hard hashing algorithm.
- •When testing password security strength against specialized hardware-based cracking attempts.
- •When you require a cryptographically secure key derivation process with customizable memory and CPU overhead.
How It Works
- •Enter your plain-text password and optionally provide a custom salt in hexadecimal format.
- •Adjust the cost (N), block size (r), and parallelism (p) parameters to define the desired computational complexity.
- •Specify the desired output key length in bytes to match your application's security requirements.
- •Click generate to produce the final Scrypt hash, which can then be used for secure authentication storage.
Use Cases
Examples
1. Standard Password Hashing
Backend Developer- Background
- Developing a secure login system and need to store user passwords in a database.
- Problem
- Need a memory-hard hash to prevent attackers from using GPUs to crack stolen password databases.
- How to Use
- Enter the user's password, keep default cost parameters, and generate the hash for storage.
- Example Config
-
Cost (N): 16384, Block Size (r): 8, Parallelism (p): 1, Key Length: 32 - Outcome
- A secure 32-byte Scrypt hash ready for database insertion.
2. High-Security Key Derivation
Security Engineer- Background
- Creating an encrypted vault that requires a strong key derived from a master passphrase.
- Problem
- Need to increase the computational cost to make the key derivation process extremely slow for attackers.
- How to Use
- Increase the cost factor (N) to 65536 and set parallelism to 4 to maximize resource usage.
- Example Config
-
Cost (N): 65536, Block Size (r): 8, Parallelism (p): 4, Key Length: 64 - Outcome
- A highly complex, memory-intensive hash suitable for protecting sensitive master keys.
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FAQ
What is the purpose of the 'Cost Factor' (N)?
The cost factor determines the memory and CPU usage required to compute the hash; higher values make the process more resistant to brute-force attacks.
Should I provide my own salt?
Providing a unique, random salt for every password is recommended to prevent rainbow table attacks. If left empty, the tool can generate one for you.
Why must the cost factor be a power of 2?
The Scrypt algorithm requires the cost parameter (N) to be a power of 2 to ensure efficient memory allocation during the hashing process.
Is this tool secure for production use?
This tool is intended for generating hashes for testing or development. For production, ensure you use a trusted, audited cryptographic library in your application code.
What is the difference between block size and parallelism?
Block size (r) controls the memory footprint per iteration, while parallelism (p) controls how many independent threads are used to compute the hash.