rsecure

rsecure is a simple and secure command-line tool for AES-GCM file encryption and decryption, built in pure Rust. Ideal for protecting sensitive files, backups, and personal data.

Keep It Simple Stupid

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Features

• 🔐 AES-256 GCM encryption & decryption
• 🚀 Fast & dependency-free (pure Rust)
• 🛡️ Safe key handling (keys never stored with data)
• 🖥️ Simple CLI interface
• 📦 Available on crates.io

Installation

Using cargo:

cargo install rsecure

Locally:

git clone https://github.com/containerscrew/rsecure.git
cd rsecure
cargo build --release
sudo cp ./target/release/rsecure /usr/local/bin/

Usage

Commands

Command	Description
rsecure create-key -o /mnt/myusb/rsecure.key	Generate a new AES-256 key and save it to a file
openssl rand -out /mnt/myusb/rsecure.key 32	Alternative: generate a random 256-bit key using OpenSSL
rsecure encrypt -p /mnt/myusb/rsecure.key -s /tmp/mydirectory/text_to_encrypt.txt	Encrypt a single file (.enc file is created in the same directory)
rsecure encrypt -p /mnt/myusb/rsecure.key -s /tmp/mydirectory/files/	Encrypt all files in a directory
rsecure decrypt -p /mnt/myusb/rsecure.key -s /tmp/mydirectory/text_to_encrypt.txt.enc	Decrypt a single encrypted file
rsecure decrypt -p /mnt/myusb/rsecure.key -s /tmp/mydirectory/files/	Decrypt all files in a directory
rsecure encrypt -r -p ~/.keys/rsecure.key -s /tmp/rsecure/dirtoencrypt/	Encrypt and remove original files after confirmation

Warning

Saving the key in the same local filesystem where you save the encrypted files is not a good idea. Save the key in a secure location, like a USB drive or a password manager. Or just save it in a root owned directory with strict permissions (will require sudo to use it).

Important

By default, rsecure will not delete the source plain files after encryption to avoid data loss. If you want to delete the source files after encryption, use -r flag.

Local dev

Testing encryption and decryption:

mkdir -p /tmp/rsecure/dirtoencrypt
touch /tmp/rsecure/filetoencrypt.txt
echo 'please, hack me!' > /tmp/rsecure/filetoencrypt.txt
for i in {1..10}; do
    head -c 100 /dev/urandom | base64 > /tmp/rsecure/dirtoencrypt/file_$i.txt
done

rsecure create-key -o ~/.keys/rsecure.key
rsecure encrypt -p ~/.keys/rsecure.key -s /tmp/rsecure/filetoencrypt.txt
rsecure decrypt -p ~/.keys/rsecure.key -s /tmp/rsecure/filetoencrypt.txt.enc
#
rsecure encrypt -p ~/.keys/rsecure.key -s /tmp/rsecure/dirtoencrypt/
rsecure decrypt -p ~/.keys/rsecure.key -s /tmp/rsecure/dirtoencrypt/

License

rsecure is distributed under the terms of the GPL3 license.