Web Crypto API - salamyx.com

Secure

Operations are performed in a secure environment

Native Performance

Uses browser's native implementation for speed

Standardized

W3C standard supported by all modern browsers

🔒 Client-Side Processing
All cryptographic operations are performed in your browser using JavaScript. Your data never leaves your device.

Try It Out: SHA-256 Hash Generator

Enter text below to generate a SHA-256 hash using the Web Crypto API:

Text to hash:

Enter any text you want to hash. The processing happens entirely in your browser.

Basic Usage Example

Here's how to use the Web Crypto API to generate a SHA-256 hash:


// Convert string to ArrayBuffer
function strToBuffer(str) {
    return new TextEncoder().encode(str);
}

// Generate SHA-256 hash
async function sha256(str) {
    const buffer = strToBuffer(str);
    const hash = await crypto.subtle.digest('SHA-256', buffer);
    return Array.from(new Uint8Array(hash))
        .map(b => b.toString(16).padStart(2, '0'))
        .join('');
}

// Usage
sha256('Hello World')
    .then(hash => console.log(hash));

Additional Information

⚠️ Important Note: The Web Crypto API is only available in secure contexts (HTTPS). Some features may not work when serving pages over HTTP.

Frequently Asked Questions

What is Web Crypto API?

Web Crypto API is a JavaScript interface that allows you to perform cryptographic operations in the browser, including encryption, decryption, and hashing.

Is my data secure?

Yes, all operations are performed locally in your browser. Your data never leaves your device.

Key Features