Secure Hash & Salt Generator

This is a client-side hashing tool. For secure web application authentication, passwords should always be collected over HTTPS and hashed on the server. Never send plaintext passwords to the client for hashing in a live system. This tool is intended for educational purposes, local testing, or generating hashes for data integrity checks, not for direct use in production authentication flows.

Single Hash Generator

Text to Hash:

Hashing Algorithm:

Salt Method:

Salt (optional but recommended; required for PBKDF2):

Bulk Hash & Export

Hashing Algorithm:

Salt Method:

Common Salt (if not using random; required for PBKDF2):

Use unique random 64-char salt per password

Import Passwords

Status:

Enter text above and click "Generate Hash".

Understanding Hashing & Salting

Types of Hashes

Hashing algorithms transform data into a fixed-size string of characters. They are categorized by their security and use case.

MD5/SHA-1: Legacy, fast, but insecure due to known vulnerabilities (collisions). Not recommended for passwords.
SHA-2 Family (SHA-256, SHA-512): Stronger and widely used for data integrity and digital signatures. A good baseline.
SHA-3 Family (SHA3-256, etc.): A modern standard with a different internal structure (sponge construction) than SHA-2, providing a secure alternative if weaknesses are ever found in SHA-2.
Password Hashing Functions (PHFs): Designed to be slow to compute, making brute-force attacks difficult. Examples include PBKDF2, bcrypt, scrypt, and Argon2 (the modern standard).

Why Salt Passwords?

A "salt" is a unique, random string added to each password before it's hashed. This is a critical security step.

Without a salt, two users with the same password ("password123") would have the same hash. An attacker could use a pre-computed "rainbow table" to find all matching hashes instantly.

Mitigates Rainbow Tables: Since each user has a unique salt, their hashes will be unique, even for identical passwords.
Prevents Mass Compromise: If one hash is cracked, it doesn't reveal any other passwords.

Common Use Cases

Hashing and salting are fundamental to modern digital security and data management.

Password Storage: The most common use. Storing salted hashes instead of plaintext passwords protects user accounts if a database is breached.
Data Integrity: Hashing files (e.g., downloads) provides a "checksum". You can verify the hash to ensure the file hasn't been corrupted or tampered with.
Digital Signatures: Used in cryptography to verify the authenticity and integrity of a message or document.