Encrypt any file. Send it anywhere. No cloud required.
EnzoCrypt is a local file encryption tool built on AES-256-GCM + RSA-2048-OAEP. No accounts, no servers, no internet connection needed. Your files never leave your machine unencrypted.
- AES-256-GCM streaming encryption — handles files of any size with configurable chunk sizes (1 MB to 64 MB)
- RSA-2048-OAEP key system — encrypt for a recipient using only their public key
- Two-pass decryption — full cryptographic verification before writing a single byte
- Per-chunk authentication — each chunk is bound to the file header, preventing tampering or reordering
- Backward compatible — reads both V1 (single-pass) and V2 (streaming)
.enzocryptfiles - No cloud, no telemetry — entirely local, works offline
Your file → AES-256-GCM (random key) → .enzocrypt container
↑
RSA-2048-OAEP (recipient's public key encrypts the AES key)
To decrypt, the recipient uses their private key (password-protected) to recover the AES key, then verifies and decrypts all chunks.
- Python 3.9+
tkinter(included with standard Python on Windows)
git clone https://github.com/Enzopro777/Enzocrypt.git
cd enzocrypt
pip install -r requirements.txt
python app1.0.6.py- Identity tab — generate your RSA key pair once. Share only the public key.
- Encrypt tab — select a file and the recipient's public key → saves a
.enzocryptfile. - Decrypt tab — open a
.enzocryptfile with your private key and password.
| Field | Size | Description |
|---|---|---|
| Magic | 4 bytes | ENZO |
| Version | 2 bytes | 2 (V2 streaming) |
| Extension length | 1 byte | Length of original extension |
| Extension | variable | Original file extension |
| RSA blob length | 2 bytes | Length of encrypted AES key |
| RSA blob | variable | AES key encrypted with recipient's public key |
| Chunk size | 4 bytes | Chunk size used for this file |
| Chunks | variable | [length][nonce][tag][ciphertext] × N |
Each chunk's nonce is unique and its AAD binds it cryptographically to the header and its index, preventing reordering or substitution attacks.
GNU General Public License v3.0 — see LICENSE for full text.
You are free to use, study, and redistribute this software. Any derivative work must also be released under GPL v3.
EnzoCrypt is developed independently on modest hardware. If this tool is useful to you, consider supporting its development:
🇦🇷 Since I'm based in Argentina, you can also donate directly via Mercado Pago: https://link.mercadopago.com.ar/patatascalientes
🪙 Crypto (USDT TRC20): TUZ6xXYoES78JPrUA6ZcBqxpaUoXGRjtXc
Donations help fund a new development machine and the Microsoft Store release.
Built by Enzo · Rosario, Argentina