MirginCipher Blackbox (MGC) — Encrypted AI Agent Execution Layer

A secure local execution layer for AI agents — encrypted storage, sealed scripts, zero plaintext leakage.

Protect API keys, credentials, and scripts from AI agents with AES‑256 + RSA hybrid encryption and a Cython‑compiled secure core.

> 📌 Roadmap: MGC Blackbox — 2026 Development Plan

What is MGC Blackbox?

MirginCipher Blackbox (MGC) is a Local Encrypted Execution Layer designed to protect sensitive human intent and enable secure, deterministic AI execution.

It provides a trusted device‑level encrypted boundary for agents — MGC is not an agent itself.

MGC ensures:

• Sensitive data never leaves the device
• AI agents cannot access plaintext
• Scripts execute inside a sealed, encrypted environment
• Cross‑node execution is possible without exposing code

Why MGC?

• 🔐 End‑to‑End Encrypted Storage

AES‑256 encrypted vault for API keys, credentials, configs — never exposed to AI agents or external systems.

• 🧱 Local‑First Security Boundary

All execution and decryption happen on‑device. No cloud dependency, no plaintext leakage, no telemetry.

• 🧩 Sealed Script Execution (Unique)

Convert scripts into unreadable execution capsules.

Only trusted nodes can decrypt & run them — even the sender cannot read sealed scripts.

• ⚡ Deterministic Local Execution

Stable, reproducible behavior across macOS / Linux / Windows with a Cython‑compiled secure core.

• 🛠️ Native MCP / Skill Integration

Exposes mgc_save / mgc_get / mgc_list / mgc_seal / mgc_open_webui as standard MCP tools.

Works out‑of‑the‑box with Copilot, Claude, Trae, IDE Agents.

• 🔄 Zero Integration Cost

Any MCP‑compatible agent can immediately use MGC as its secure execution backend — no SDK, no custom code.

• 🛡️ Designed for AI Agent Security

Protects human intent, prevents agent overreach, and enforces strict execution boundaries.

Use Cases

1. Protect API Keys & Credentials from AI Agents

Store secrets encrypted. Agents can use them, but never see plaintext.

2. Secure Local Automation

Run Python / Shell / Node scripts locally without exposing sensitive data to AI logs or cloud systems.

3. Sealed Script Distribution

Share scripts with collaborators or devices without exposing source code — they can execute but cannot read.

4. Cross‑Node Execution

Send sealed scripts to trusted remote nodes:

• Sender cannot read the sealed content
• Recipient cannot read the sealed content
• Only the target node can decrypt and execute

5. Local‑First AI Agent Security Boundary

Provides a local security layer for Copilot / Claude / Trae / IDE Agents.

6. Privacy‑Preserving AI Workflows

Enables financial automation, personal data processing, and enterprise internal workflows with privacy protection.

📘 Value Scenarios

MGC Blackbox provides a trusted, encrypted execution boundary for different roles and environments.

Detailed scenario documents:

• 🔐 Sensitive Credentials Authorization

docs/Sensitive_Credentials_Authorization.md

• 🧠 Encrypted Cognitive Script Execution

docs/Encrypted_Cognitive_Script_Execution.md

• 🌐 Cross‑Node Execution Grant (Encrypted Capability Sharing)

docs/Cross‑Node_Execution_Grant%20(Encrypted_Capability_Sharing).md.md)

Architecture

Crypto Layer & Performance

MGC uses a hybrid cryptographic design:

• AES‑256‑GCM — bulk data encryption
• RSA‑2048/4096 — key encapsulation & node authorization

The crypto layer is Cython‑compiled to:

• Improve AES & RSA performance
• Reduce Python overhead
• Provide a sealed, tamper‑resistant execution boundary
• Maintain deterministic behavior across nodes

Features

• Local encrypted storage
• Encrypted execution
• Store‑once authorization
• Environment migration
• Cross‑agent availability
• Cross‑platform support
• No delete function (manual DB deletion only)
• Script sealing for cross‑node execution

Quick Start

1. Install

pip install mgc-blackbox

2. Start Service

mgc

3. Open WebUI

http://127.0.0.1:57218

4. Store a Secret

from mgc import save
save("openai_key", "sk-xxxx")

5. Execute Scripts Securely

Scripts run inside MGC's encrypted boundary.

Example: Save & Retrieve Secrets

from mgc import save, get

save("openai_key", "sk-xxxx")
print(get("openai_key"))

MCP Integration

MGC exposes a local MCP tools interface:

• `mgc_save`
• `mgc_get`
• `mgc_list`
• `mgc_seal`
• `mgc_open_webui`

Compatible with Copilot, Claude, Trae, IDE Agents.

Usage Overview

1. Through AI agents (Skills / MCP)

Agents can store secrets, retrieve encrypted items, execute scripts, and seal scripts.

2. Through system scripts (REST API)

External scripts can fetch encrypted items at runtime.

Security Model

• All data remains local
• No cloud upload
• No plaintext logging
• Deterministic execution
• User‑controlled authorization

AI Skill Specification

See: `docs/skill_spec.md`

Authorization

Integration into any third‑party products or AI agents is free,

but requires official authorization to ensure ecosystem integrity.

Contact:

mirgincipher@outlook.com

zkeviny@icloud.com

License

See the LICENSE file for full terms.

© 2026 MirginCipher Team. All rights reserved.

---