APFSDS Obfuscation - Traffic obfuscation utilities

This crate provides:

• SIMD XOR mask (AVX2 + portable fallback)
• Smart padding (matching target distribution)
• Compression utilities
• Timing jitter
• Decoy traffic generation

apfsds-obfuscation

Traffic obfuscation layer for APFSDS.

Features

• XorMask: Rolling XOR mask with session-derived key
• Padding: Size obfuscation with random or fixed-block padding
• Compression: Optional LZ4 compression for payloads

Usage

use apfsds_obfuscation::{XorMask, Padder, PaddingStrategy};

// XOR masking
let mask = XorMask::from_session_key(&session_key);
let masked = mask.apply(&data);
let original = mask.apply(&masked); // XOR is symmetric

// Padding
let padder = Padder::new(PaddingStrategy::Random { min: 8, max: 64 });
let padded = padder.pad(&data);
let unpadded = padder.unpad(&padded)?;

Obfuscation Pipeline

Plaintext → Compress → Pad → XOR Mask → Ciphertext

License

MIT