PNGme : Hide Secret Messages in PNG Files

My implementation of a small Rust project from here.

System

Use Rust to implement the main encoder/decoder.
Use Python to generate testing PNG files.
Use Cargo to manage and build the project.

Usage

To build the system
```
cargo build --release
```

To encode a message into a PNG file

cargo run --release encode <src_file> <dst_file> <chunk_type> <message>

To decode a message from a PNG file

cargo run --release decode <src_file> <chunk_type>

To delete a chunk from a PNG file

cargo run --release delete <src_file> <chunk_type>

To print the data in a PNG file

cargo run --release print <src_file>

The data will be printed in json-like format.

  Png: {
      Header: [137, 80, 78, 71, 13, 10, 26, 10],
      Chunks: {
          Chunk: { Length: 13, ChunkType: { Bytes: [73, 72, 68, 82]}, ChunkData: [0, 0, 0, 2, 0, 0, 0, 2, 8, 2, 0, 0, 0], Crc: 4258568819},
          Chunk: { Length: 22, ChunkType: { Bytes: [73, 68, 65, 84]}, ChunkData: [120, 156, 99, 236, 18, 255, 123, 172, 82, 154, 197, 87, 224, 232, 43, 222, 63, 0, 41, 8, 6, 19], Crc: 3998231332},
          Chunk: { Length: 0, ChunkType: { Bytes: [73, 69, 78, 68]}, ChunkData: [], Crc: 2923585666},
      }
  }

To generate a testing PNG file

python3 test/generate_png.py <file> <height> <width>

B10732009/PNGme

PNGme : Hide Secret Messages in PNG Files

System

Usage

References