Bitcoin Keyhound is a Python-based toolkit designed to analyze and predict Bitcoin private keys. It utilizes nonce calculations, ECDSA signature components, and cryptographic operations to detect potential vulnerabilities in Bitcoin's elliptic curve signature scheme. This tool is valuable for researchers and enthusiasts aiming to understand Bitcoin security at a deeper level.
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Clone the repository:
git clone https://github.com/ufodia/Bitcoin-Keyhound.git cd Bitcoin-Keyhound -
Install required dependencies:
pip install -r requirements.txt
Each file provides specific cryptographic analyses, ranging from nonce calculations to transaction signature decoding. You can run each script to analyze different components of Bitcoin transactions.
To run the individual scripts, use the following commands:
python knonce.py
python privnonce.py
python randk.py
python signature.pyThis script calculates the nonce (k value) used in ECDSA signatures by utilizing known values (d, r, s, z).
- calculate_nonce (k): Computes the
kvalue using modular inversion and provided ECDSA signature components.
Given known values of k, r, s, and z, this script calculates the private key (d).
- calculate_private_key (d): Uses the given
k,r,s, andzvalues to determine the private key.
This file generates random k values and attempts to find a private key (d) that matches a target public key within a specified range.
- generate_random_k: Generates a cryptographically secure random
kvalue. - calculate_private_key: Computes a potential private key from a generated
kvalue. - get_public_key_hex: Returns the hex representation of the public key associated with a private key.
- main: Continuously generates and tests
kvalues until a suitabledvalue that matches the target public key is found.
Fetches and decodes Bitcoin transactions, extracting and analyzing the ECDSA signature components (r, s, and z), along with the public key.
- fetch_transaction_hex: Retrieves the transaction hex from blockchain.info.
- calculate_z: Computes the message hash (
z) from the transaction hash. - decode_signature: Decodes
randsvalues from the DER-encoded signature. - decode_transaction: Analyzes a transaction, extracting signature and public key values for each input.
Contributions to Bitcoin Keyhound are welcome. Please follow these steps:
- Fork the repository.
- Create a new branch for your changes.
- Ensure your changes are properly tested.
- Submit a pull request.
For issues or suggestions, feel free to open an issue in the GitHub repository.
This project is licensed under the MIT License. For details, see the LICENSE file.
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