sh-dv/hat.sh

Health v2 · maintenance only

Adoption not part of the score

2291 stars · 273 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Hat.sh is a browser-based web application for secure local file encryption and decryption using XChaCha20-Poly1305 with chunked streaming via libsodium. It supports password-based and asymmetric key encryption entirely client-side, with no data ever sent to a server.

Use cases

• encrypt files in the browser without uploading them
• decrypt files with a password locally
• share encrypted files securely with a key exchange
• encrypt large files with chunked streaming
• generate secure random passwords for file encryption
• self-host a private file encryption tool

When to choose

• you need client-side file encryption with no server trust
• you want to encrypt large files efficiently in the browser
• you prefer modern algorithms like XChaCha20-Poly1305 and Argon2id
• you want a self-hostable, offline-capable encryption tool

When to avoid

• you need command-line or scripted batch encryption
• you require full-disk or folder encryption
• you need integration into an existing application via an API

Facets

application · maturity active

cryptography security file-system security privacy files web-development browser self-hosted cross-platform file-encryption client-side-encryption xchacha20-poly1305 libsodium argon2id password-based-encryption serverless no-upload web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="sh-dv/hat.sh")