Hash Generator

How to Use the Hash Generator:

Enter your text in the input field and select a hashing algorithm (MD5, SHA-1, SHA-256, SHA-512, or HMAC). Click Generate to create the hash. For HMAC, provide a secret key. Copy the generated hash with one click.

Password Security

Generate secure password hashes for WordPress user authentication and custom login systems.

Data Integrity

Create checksums to verify file integrity and detect data corruption or tampering.

API Authentication

Generate HMAC signatures for secure API request authentication and validation.

How Do Hash Algorithms Work?

Hash algorithms convert input data of any length into a fixed-length string of characters. This process is one-way, meaning you cannot reverse a hash back to the original data. Different algorithms offer varying levels of security and speed.

One-Way Function

Hashing is irreversible—you cannot derive the original input from the hash output, making it ideal for password storage.

Deterministic

The same input always produces the same hash output, allowing for consistent verification and comparison.

Collision Resistance

Modern algorithms like SHA-256 are designed to make it extremely difficult to find two inputs that produce the same hash.

Using Hash Functions in JavaScript:

async function hashText(text) {

  const encoder = new TextEncoder();

  const data = encoder.encode(text);

  const hashBuffer = await crypto.subtle.digest('SHA-256', data);

  const hashArray = Array.from(new Uint8Array(hashBuffer));

  const hashHex = hashArray.map(b => b.toString(16).padStart(2, '0')).join('');

  return hashHex;

}

Output e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Generate SHA-256 hash using Web Crypto API

async function hmacSHA256(message, secret) {

  const encoder = new TextEncoder();

  const key = await crypto.subtle.importKey(

    'raw',

    encoder.encode(secret),

    { name: 'HMAC', hash: 'SHA-256' },

    false,

    ['sign']

  );

  const signature = await crypto.subtle.sign('HMAC', key, encoder.encode(message));

  return Array.from(new Uint8Array(signature))

    .map(b => b.toString(16).padStart(2, '0')).join('');

}

Output HMAC signature string

Generate HMAC-SHA256 signature for API authentication

Frequently asked questions

For modern applications, use SHA-256 or SHA-512. MD5 and SHA-1 are deprecated for security-sensitive applications.

HMAC (Hash-based Message Authentication Code) combines a hash function with a secret key to create a secure signature for authentication.

No, hashing is a one-way function. You cannot derive the original input from the hash output.

Collect Better Feedback with Userback

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