rclonedecrypt 0.2.5

CLI to decrypt rclone-encrypted files

Features

• Cross-platform: Compiles to native binaries for Linux, Windows and macOS
• Fast decryption: Efficient handling of large encrypted files
• rclone compatible: Implements the same encryption algorithm used by rclone
• Command-line interface: Easy to use from terminal or scripts
• Repo: https://github.com/pepa65/rclonedecrypt
• After: https://github.com/mcolatosti/rclonedecrypt
  • Removed various password options
  • Removed the -i/--input flag (made it a positional argument)
  • Removed inline-tests
  • Adjusted documentation for rclone 1.59

Installation

Prerequisites

• Rust toolchain (install from rustup.rs)

Building from source

git clone https://github.com/pepa65/rclonedecrypt
cd rclonedecrypt
cargo rel  # The binary gets symlinked to `rclonedecrypt`

Run test

./test.sh

Build different targets

• Linux: cargo rel (gives standalone static binary)
• Intel macOS: cargo build --release --target x86_64-apple-darwin
• Apple Silicon macOS: cargo build --release --target aarch64-apple-darwin
• Windows (with mingw-w64): cargo build --release --target x86_64-pc-windows-gnu

Download pre-built binaries

Check the Releases page

Usage

Help

rclonedecrypt 0.2.5 - CLI to decrypt rclone-encrypted files
USAGE: rclonedecrypt [OPTIONS] --output <FILE> --password <PASSWORD> --salt <SALT> <FILE>
OPTIONS:
  -o, --output <FILE>        Output decrypted file
  -p, --password <PASSWORD>  Encryption password
  -s, --salt <SALT>          Salt used for encryption
  -v, --verbose              Enable verbose output
  -h, --help                 Print help
  -V, --version              Print version

Example

`rclonedecrypt encrypted_file.jpg.bin -o decrypted_file.jpg -p 'PASSWORD' -s 'SALT'

Technical Details

• Algorithm: AES-256-CTR
• Key derivation: scrypt (N=16384, r=8, p=1)
• Key size: 256 bits (32 bytes)
• IV size: 128 bits (16 bytes)
• Salt size: 64 bits (8 bytes)

Code structure

• src/main.rs: Main application entry point
• src/cli.rs: Command-line interface definition
• src/decrypt.rs: Core decryption logic
• src/error.rs: Error types and handling

License

This project is licensed under the MIT License - see the LICENSE file for details.

Security Notes

• Passwords are handled in memory and should be cleared after use.
• This tool is intended for legitimate decryption of files you have the right to.
• Always verify the integrity of decrypted files.

Other documents

• DECRYPTION_SUCCESS.md
• USAGE.md