3ds-rom-crypto

Community

Decrypts 3DS ROMs using AES-CTR keys.

Authorlondospark
Version1.0.0
Installs0

System Documentation

What problem does it solve?

This guide provides a comprehensive understanding of the 3DS ROM encryption/decryption pipeline (NCSD/NCCH) and key derivation, enabling researchers and developers to implement or audit decryption workflows in 3DS emulation and tooling.

Core Features & Use Cases

  • Documentation of NCSD/NCCH file layout, including headers, partition tables, and per-partition structures.
  • Step-by-step explanations of key derivation, IV construction, decryption order, and flag patching.
  • Practical use cases for emulator development, forensic analysis, and integrity checks.

Quick Start

Refer to this guide to implement a 3DS ROM decryption workflow in your project.

Dependency Matrix

Required Modules

None required

Components

Standard package

💻 Claude Code Installation

Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.

Please help me install this Skill:
Name: 3ds-rom-crypto
Download link: https://github.com/londospark/citrust/archive/main.zip#3ds-rom-crypto

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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