Slashsum 🔍

Multi-threaded file checksum calculator |

Calculate multiple file checksums simultaneously with blazing-fast performance using Rust's concurrency capabilities.

✨ Features

• ⚡ Parallel computation of 5 hash algorithms
• 📊 Supported algorithms:
  • CRC32 (IEEE 802.3)
  • MD5
  • SHA-1
  • SHA-256
  • SHA-512
• 📁 Large file support (>10GB tested)
• 💾 Save results to .checksum files
• ⏱️ Execution time metrics
• 📦 Cross-platform (Windows/Linux/macOS)

🚀 Installation

Option 1: From Snap (Linux)

If you're using a Linux system, you can easily install Slashsum using Snap:

1. Download the Snap package:

   • You can download the slashsum_0.1.0_amd64.snap file from the releases page or from a local source.

2. Install the Snap package:

   • Open a terminal and run the following command:

   sudo snap install slashsum_0.1.0_amd64.snap --dangerous --classic

Build from source:

git clone https://github.com/yourusername/slashsum
cd slashsum
cargo build --release

🛠 Usage

Basic usage:

slashsum path/to/file [--save]

Example output:

File:     large_file.iso
Size:     4.68 GB (5033165312 bytes)
CRC32:    8d7be4e9
MD5:      a3b9d148c5f8d237f735a5d9795a2345
SHA1:     2aae6c35c94fcfb415dbe95f408b9ce91ee846ed
SHA256:   b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
SHA512:   309ecc489c12d6eb4cc40f50c902f2b4d0ed77ee511a7c7a9bcd3ca86d4cd86f989dd35bc5ff499670da34255b45b0cfd830e81f605dcf7dc5542e93ae9cd76f
Time:     12.45s

📈 Performance Benchmarks

File Size	Threads	Time (s)
100 MB	5	0.45
1 GB	5	2.34
10 GB	5	25.12
50 GB	5	128.70

Tested on AWS EC2 t2.xlarge instance (4 vCPUs, 16GB RAM)

🧠 How It Works

1. File Reading
   Buffered reading in 1MB chunks (configurable)
2. Data Distribution
   Uses crossbeam channels to send chunks to hash workers
3. Parallel Processing
   Dedicated thread for each hash algorithm
4. Result Aggregation
   Combines results from all threads
5. Output Formatting
   Human-readable sizes and standardized hash formats

🛠 Dependencies

• crossbeam-channel - Thread communication
• Rust Crypto Hashes - Cryptographic implementations
• crc - CRC32 calculation

🤝 Contributing

Les contributions sont les bienvenues !
Voir CONTRIBUTING.md pour les guidelines.

📜 License

MIT License - Voir LICENSE

---

🔍 Why "Slashsum"?
Combination of "slash" (/) for file paths and "checksum" - because every good tool needs a catchy name!