hat.sh is a javascript app that provides secure file encryption using the AES-256-GCM algorithm from WebCryptoAPI provided by your browser. it was coded following the WebCrypto Documentations .
It's fast, secure and Serverless, the app never uploads the files to the server.
in a small amount of code the app can encrypt any type of files at any size within seconds.
To use the app all you have to do is Browse a file, Type a Decryption Key or Generate one through our secure key generator. and your encrypted file is ready to download.
just simply browse a file, type a decryption key or use our secure key generator, and encrypt or decrypt.
the app is cross-platform and is available to download on macOS and Windows
Browserify which lets you require('modules') in the browser by bundling up all of your dependencies. or you can serve the app in NodeJS $ node app.js
Download or clone the repository
$ git clone https://github.com/sh-dv/hat.sh.git hat.sh
go to the app directory
cd [app directory]
open terminal and install the node modules that are in the package.json file
sudo npm install
after the packages are installed bundle main app.js and modules together in one file using Browserify
browserify src/js/app.js -o bundle.js
then start the app by running index.html
We officially support the last two versions of every major browser. Specifically, we test on the following
- Chrome on Windows, macOS, and Linux , IOS, Android
- Firefox on Windows, macOS, and Linux
- Safari on iOS and macOS
- Edge on Windows
- IE 11 on Windows
for more info see WebCryptoAPI home page
window.crypto.subtle.generateKey(
{
name: "AES-GCM",
length: 256,
},
true,
["encrypt", "decrypt"]
)
.then(function(key){
console.log(key);
})
.catch(function(err){
console.error(err);
});function importSecretKey(rawKey) {
return window.crypto.subtle.importKey(
"raw",
rawKey,
"AES-GCM",
true,
["encrypt", "decrypt"]
);
}
.then(function(key){
console.log(key);
})
.catch(function(err){
console.error(err);
});async function exportCryptoKey(key) {
const exported = await window.crypto.subtle.exportKey(
"raw",
key
)
.then(function(keydata){
console.log(keydata);
})
.catch(function(err){
console.error(err);
});async function encryptMessage(key) {
let encoded = getMessageEncoding();
// The iv must never be reused with a given key.
iv = window.crypto.getRandomValues(new Uint8Array(12));
ciphertext = await window.crypto.subtle.encrypt(
{
name: "AES-GCM",
iv: iv
},
key,
encoded
)
.then(function (encrypted) {
console.log(new Uint8Array(encrypted));
})
.catch(function (err) {
console.error(err);
});
}async function decryptMessage(key) {
let encoded = getMessageEncoding();
let decrypted = await window.crypto.subtle.decrypt({
name: "AES-GCM",
iv: iv
},
key,
ciphertext
)
.then(function (decrypted) {
console.log(new Uint8Array(encrypted));
})
.catch(function (err) {
console.error(err);
});
}zxcvbn.js for Smart Password Strength Estimation
bootstrap for the responsive css layout
font-awesome for the icons