- Fixed error with README for CPP project

Author: Riccardo

cpp/dlms_crypto_tool/README copy.md

@@ -0,0 +1,116 @@
+# 🛡️ DLMS Crypto Tool (C++ version)
+
+**DLMS Crypto Tool** is a cross-platform C++ command-line interface (CLI) utility for encrypting, decrypting, and authenticating DLMS APDU messages.
+
+## ✨ Features
+
+- **🔒 Encryption:** Encrypts DLMS APDU messages.
+- **🔑 Decryption:** Decrypts APDU messages.
+- **🧾 Authentication:** Generates authentication tags.
+- **💻 CLI Interface:** Use command-line options to perform encryption, decryption, authentication, and key generation.
+- **📁 File I/O Support:** Optionally load input data from files and output results to files.
+- **📝 Verbose Mode:** Provides detailed logging for debugging and traceability.
+- **📚 Documentation:** Detailed docs generated using MkDocs to guide you through using the tool.
+
+## 🚀 Requirements
+
+- A C++17 compliant compiler (e.g. GCC 7+)
+- [OpenSSL](https://www.openssl.org/) development libraries
+    - On Ubuntu `sudo apt-get install libss-dev`
+- GNU Make
+
+## 📦 Building the project
+
+### Using make
+
+1. **Clone the repository:**
+  ```bash
+   git clone https://github.com/YourUsername/dlms_crypto_tool.git
+   cd dlms_crypto_tool
+ ```
+
+2. **Compile with make:**
+  ```bash
+   make
+  ```
+
+## How to use it
+
+🔑 Generate a Random Encryption Key
+
+```bash
+./dlmscli key
+```
+
+🔐 Encrypt an APDU Message
+
+System Title = 5249435249435249\
+Frame Counter = 80000001\
+Encryption Key = 454E4352595054494F4E4B45594B4559\
+Authentication Key = 41555448454E5449434154494F4E4B45\
+APDU = c001810001000060010aff0200
+
+```bash
+./dlmscli encrypt 5249435249435249 80000001 454E4352595054494F4E4B45594B4559 41555448454E5449434154494F4E4B45 c001810001000060010aff0200
+
+```
+Result
+```
+Encrypted/Decrypted APDU: 0de63f2331a09aa85e8830f5f3
+```
+
+🔓 Decrypt an APDU Message
+
+System Title = 5249435249435249\
+Frame Counter = 80000001\
+Encryption Key = 454E4352595054494F4E4B45594B4559\
+Authentication Key = 41555448454E5449434154494F4E4B45\
+APDU = 0de63f2331a09aa85e8830f5f3
+
+```bash
+./dlmscli decrypt 5249435249435249 80000001 454E4352595054494F4E4B45594B4559 41555448454E5449434154494F4E4B45 0de63f2331a09aa85e8830f5f3
+```
+Result
+```
+Encrypted/Decrypted APDU: c001810001000060010aff0200
+```
+
+🔎 Authenticate an APDU Message
+
+System Title = 5249435249435249\
+Frame Counter = 00000001\
+Encryption Key = 454E4352595054494F4E4B45594B4559\
+Authentication Key = 41555448454E5449434154494F4E4B45\
+APDU = 0de63f2331a09aa85e8830f5f3
+
+```bash
+./dlmscli auth 5249435249435249 00000001 454E4352595054494F4E4B45594B4559 41555448454E5449434154494F4E4B45 0de63f2331a09aa85e8830f5f3
+```
+Result
+```
+TAG: 62d423292e0fe5320370881d
+```
+
+```
+Contributions are welcome! To contribute:
+
+1. Fork the repository.
+
+2. Create a new branch for your changes.
+
+3. Write tests for your modifications.
+
+4. Submit a pull request with a detailed explanation of your changes.
+```
+
+## 📜 License
+
+This project is licensed under the GNU General Public License v3.0
+
+## 🙏 Acknowledgments
+
+Special thanks to the [OpenSSL](https://www.openssl.org/) team for providing an excellent library.
+
+
+
+