PINK-072

A Rust crate for concealing files and folders as pink-colored images (.pnk).

The "072" refers to the 72-byte (8 bytes × 9) seed used for cover image generation.

How It Works

Note: This is NOT steganography.

1. A 72×72 pink cover image (PNG) is generated using Perlin noise
2. Your data is appended after the PNG's end marker (IEND)
3. Image viewers display only the pink image; the hidden data is ignored

Output files use the .pnk extension (PNG-compatible but indicates custom format).

Installation

[dependencies]
pink072 = "1.1"

Usage

Encode a File

use pink072::encode_file;
use std::path::Path;

let seed: [u8; 9] = [0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0, 0x11];
encode_file(Path::new("secret.jpg"), Path::new("output.pnk"), &seed)?;

Decode a File

use pink072::decode_file;
use std::path::Path;

let file_name = decode_file(Path::new("output.pnk"), Path::new("./extracted/"))?;
// Original file restored to ./extracted/secret.jpg

Encode a Folder (ZIP)

use pink072::encode_folder;
use std::path::Path;

let seed: [u8; 9] = [0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0, 0x11];
encode_folder(Path::new("secret_folder/"), Path::new("output.pnk"), &seed)?;

Low-level API

use pink072::{pink072_wrap, pink072_unwrap, encode_pnk, decode_pnk};

let seed: [u8; 9] = [0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0, 0x11];

// Wrap raw data
let frame = pink072_wrap(b"secret", 0, &seed)?;

// Convert to PNK format
let pnk = encode_pnk(&frame);

// Decode
let frame = decode_pnk(&pnk)?;
let (payload_type, data) = pink072_unwrap(frame)?;

Payload Types

Cover Image

• Size: 72×72 pixels (RGBA)
• Style: Organic curves with pink-to-white gradient
• Generated from seed using 2D Perlin noise
• Same seed always produces the same image

License

GPL-3.0-or-later