# EXOSKELETON 2 – Neural Audio-Visual Encryption System

[webxos]

EXOSKELETON 2 – Neural Audio-Visual Encryption System

Technical & Conceptual User Guide

https://github.com/webxos/webXOS/blob/main/exoskeleton2_readme.md

December 22, 2025

Introduction – Aesthetic Cryptography in the Late 2020s

EXOSKELETON 2 is a single-page, browser-based PWA/UX project that deliberately blends three eras of computing:

• the glowing green phosphor of 1980s–1990s terminal interfaces
• the handshakes of 56k dial-up audio
• contemporary neural-network visualization

Rather than pursuing standard cryptographic security, the project performs a kind of visual and audio cryptography — it takes ordinary text, subjects it to multiple layers of deterministic transformation, and presents the result as both a visualized neural hologram and an audio artifact.

Core

Every piece of text you enter is simultaneously:

1. Encrypted — using a reproducible but very weak XOR-based scheme
2. Sonified — turned into frequency-modulated audio that imitates a 56k modem negotiation mixed with data transmission
3. Spatialized — visualized as a three-dimensional-ish constellation of floating squares, pulsing nodes, and connecting synapses

The app triangulates the encryption with three dramatically different sensory channels at once:

• linguistic (the original plaintext)
• auditory (modem-like screeching tones)
• visual-kinesthetic (cybernetic neural architecture)

Use:

When you type or paste text and press ENCRYPT, the following sequence occurs behind the terminal interface:

1. Text → Hash Seed Generation
   A long SHA-512 digest is computed from the text concatenated with a fixed application salt. The first portion of this hash becomes a deterministic seed that controls almost every visual parameter.

2. Procedural Neural Architecture
   Using golden-angle distribution, character codes, and hash-derived pseudo-random values, the system places:

   • 20–80 floating grid squares
   • three concentric layers of neural nodes (9 → 6 → 3)
   • probabilistic synaptic connections between layers

   All positions, rotations, sizes, opacities, and hues are derived from the hash — the same text always reproduces the same visualization.

3. Reproducible Encryption
   The plaintext bytes are XORed against a repeating key stream generated from SHA-256(text + fixed salt).

4. Audio Synthesis
   The XORed byte stream is turned into audio using frequency-shift keying reminiscent of early modem protocols:

   • 1200–1300 Hz range ≈ binary 1 (mark)
   • 2400–2500 Hz range ≈ binary 0 (space)
   • Answer tone (2100 Hz) and carrier simulation
   • Deliberate light noise injection
   • Start/stop bits and short inter-byte silences

5. Persistent Storage
   The complete package (original text, hash, neural parameters, full float32 audio samples) is stored in IndexedDB.

6. Export/Import Ritual
   Everything is bundled into a ZIP archive with the extension .zip containing:

   • manifest.json
   • plaintext (for convenience)
   • neural architecture JSON
   • base64-encoded raw PCM audio
   • signature (for theatrical integrity checking)

Technical Stack – 2025 Browser-native Edition

The entire application runs as a single HTML file containing:

• CryptoJS → SHA-256/512, general-purpose cryptography primitives
• pako → DEFLATE compression for ZIP export
• JSZip → ZIP archive creation & reading in browser
• Web Audio API → real-time frequency-modulated audio synthesis
• IndexedDB → long-term storage of encrypted entries
• Pure CSS 3D transforms → faux-holographic grid & node positioning
• DOM animation → pulsing, rotating, breathing effects

Notably absent:

• any backend server
• any npm dependencies outside CDNs
• any build step
• any framework

The project embraces the 2020s “single-file maximalism” trend taken to an extreme.

Limitations & Disclosure

EXOSKELETON 2 should never be used to protect information that actually matters. It's conceptual and designed to test encryption:

The “encryption” is reproducible from the plaintext alone.
The audio can (in theory) be demodulated with enough signal-processing knowledge.
The ZIP contains the plaintext in clear text for user convenience.

-it performs all the secrecy while containing almost none of the mathematical protections.

Final Thoughts:

In an age where real end-to-end encryption has become boringly ubiquitous and invisible, EXOSKELETON 2 chooses the opposite direction:

It reminds us that for most of human history, sending a private message was a dedicated process — involving wax seals, trusted couriers, code books, and hours (or days) of waiting.

EXOSKELETON 2 tries to resurrect that craft using the materials available in 2025: a browser tab, some green glow css, and the encryption sounds of 56k modems that once connected the early internet.

Enjoy the app.
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