I# BTC P2PKH Adress Reused R value Scanner

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The BTC Reused R Value Scanner (R-scan) is a tool designed to detect reused R values in Bitcoin transactions. Reused R values can indicate potential security issues with the associated Bitcoin address. This script scans the transactions of a given Bitcoin address and identifies any reused R values, helping to assess the security of the address.

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Reused R Value Attack

In Bitcoin transactions, signatures are generated using the Elliptic Curve Digital Signature Algorithm (ECDSA). Each transaction input includes a digital signature composed of two values: r and s. These values are essential for validating and authenticating the transaction.

What is a Reused R Value Attack?

A reused R value attack occurs when the same r value is used in multiple signatures across different transactions. This scenario poses significant security risks for several reasons:

1. Private Key Exposure: If an attacker observes that the same r value has been used in multiple signatures, they might be able to exploit this information to deduce the private key used for signing those transactions. This is because the r value is part of the signature and, when reused, can be used in conjunction with other known data to potentially reveal the private key.

2. Increased Risk: Reusing r values across transactions can compromise the security of the Bitcoin wallet. Attackers could exploit this vulnerability to gain unauthorized access to the wallet or steal funds.

Why is it a Problem?

Using the same r value in multiple transactions can weaken the security of a wallet by exposing it to attacks. Each signature should have a unique r value to maintain robust security and prevent potential vulnerabilities.

How to Avoid It?

To avoid the reused R value attack, ensure that each transaction uses a unique r value. Proper cryptographic practices and careful management of transaction signing processes can help mitigate this risk and keep your Bitcoin wallet secure.

Features

• Scans transactions for reused R values
• Shows the transaction ID in which it occurred

Setup

Prerequisites

Ensure you have Python 3.8 or later installed on your system.

Installation

1. Clone the repository:

   git clone https://github.com/CryptoApex23/reused_r_scanner.git
   cd reused_r_scanner

2. Create and activate a virtual environment:

   $python -m venv venv        # Or python3
   $source venv/bin/activate   # On Windows, use `$venv\Scripts\activate`

3. Install the required packages:

   pip install -r requirements.txt  # Or pip3

Usage

1. Run the script:

   python reused_scanner.py # Or python3

2. Follow the prompts:

   • When prompted, enter the Bitcoin address you want to scan.

   Example input:

    Enter the Bitcoin address to scan: 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa
    Fetching data for address: 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa

   Results will be displayed in the terminal, showing any reused R values found.

Contributing

Feel free to fork the repository, make improvements, and submit pull requests. Contributions are welcome!

Donation

Help me keep the light on and maintane all the projects <3

BTC

bc1qxwlpy6fx33e968uqhw7pr030kvyr3pel0ptxt3

ETH

0x8a530A5eC57d7D7944E23Ffc5D85dA09c52C8eda

SOL

FCfyeS5LwsjjgGiJKAikYFwPoweBcVLYASjRstEhHaAs

License

This project is licensed under the MIT License. See the LICENSE file for details.