Hat.sh

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<a href="https://hat.sh" style="color:#000"><h3 align="center">hat.sh</h3></a>

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Hat.sh is a web app that provides secure local file encryption in the browser. It's fast, secure, and uses modern cryptographic algorithms with chunked AEAD stream encryption/decryption.

V2 of hat.sh introduced memory efficient in-browser large file chunked encryption using streams with libsodium.

Usage

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Features

Security

• XChaCha20-Poly1305 - for symmetric encryption.
• Argon2id - for password-based key derivation.
• X25519 - for key exchange.

The libsodium library is used for all cryptographic algorithms.

Privacy

• The app runs locally in your browser.
• No data is ever collected or sent to anyone.​

Functionality

• Secure multiple file encryption/decryption with passwords or keys.
• Secure random password generation.
• Asymmetric key pair generation.
• Authenticated key exchange.
• Password strength estimation.

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Offline Use

The app can be easily self hosted, please follow the installation instructions.

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Browser Compatibility

We officially support the last two versions of every major browser. Specifically, we test on the following

• Chrome on Windows, macOS, and Linux , Android
• Firefox on Windows, macOS, and Linux
• Safari on iOS and macOS
• Edge on Windows

Safari and Mobile browsers are limited to single 1GB files, due to lack of support with server-worker fetch api.

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Official running instances of the app

| # | URL | | --- | ----------------------------------------- | | 1 | hat.sh | | 2 | hat.now.sh | | 2 | hat.vercel.app |

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Donations

The project is maintained in my free time. Donations of any size are appreciated :

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<strong>Crypto</strong>

<table> <tr> <th></th> <th>Coin</th> <th>Address</th> </tr> <tr> <td><img src="https://i.imgur.com/utSCHpB.png" /></td> <td>Monero</td> <td style="word-break: break-word"> <code >84zQq4Xt7sq8cmGryuvWsXFMDvBvHjWjnMQXZWQQRXjB1TgoZWS9zBdNcYL7CRbQBqcDdxr4RtcvCgApmQcU6SemVXd7RuG</code > </td> </tr> <tr> <td><img src="https://i.imgur.com/imvYFLR.png" /></td> <td>Bitcoin</td> <td><code>bc1qlfnq8nu2k84h3jth7a27khaq0p2l2gvtyl2dv6</code></td> </tr> <tr> <td><img src="https://i.imgur.com/a4vLbjm.png" /></td> <td>Ethereum</td> <td><code>0xF6F204B044CC73Fa90d7A7e4C5EC2947b83b917e</code></td> </tr> </table> <br>

<strong>Kofi</strong>

https://ko-fi.com/shdvapps

<strong>Open Collective</strong>

https://opencollective.com/hatsh

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Social

• Reddit

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Acknowledgements

• Everyone who supported the project.
• Samuel-lucas6 from the Kryptor project for being helpful and doing a lot of beta testing.
• stophecom from the Scrt.link project for translating to German.
• bbouille for translating to French.
• qaqland for translating to Chinese.
• Ser-Bul for translating to Russian.
• matteotardito for translating to Italian.
• t0mzSK for translating to Slovak.
• Xurdejl for translating to Spanish.
• Franatrtur for translating to Czech.
• darkao for translating to Turkish.
• Frank7sun for translating to Japanese.

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Credits

libsodium.js

next.js

material-ui

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License

Copyright (c) 2022 sh-dv