Bitcoin private key generator python

Генерируем Bitcoin-адрес на Python

Тема криптовалют снова начинает будоражить интернет. Супер, что вам не надо идти в отделение банка с паспортом и выстаивать очередь, чтобы открыть счет. Сгенерировать кошелек Bitcoin — дело нескольких строк кода на Python.

Нам понадобятся библиотеки base58 и ecdsa. base58 – это кодирование бинарных данных 58-ю печатными символами (цифрами и латинскими буквами, кроме 0, O, I, l, которые похожи друг на друга). ecdsa – библиотека криптографии на эллиптических кривых.

Импортируем то, что нужно:

Нам нужен приватный ключ, из него мы вычислим публичный ключ, а из него – адрес кошелька Bitcoin. (Обратная процедура не возможна без полного перебора до конца времен). Приватный ключ – это 32 байта данных, которые мы получим из криптографически-надежного источника случайных чисел. Вообще можно придумать свой приватный ключ самостоятельно, если так хочется. Для генерации случайного приватного ключа мы воспользуемся библиотекой ecdsa:

Вычислим этой же библиотекой публичный ключ и добавим спереди байт 0x4 (это признак «несжатого» публичного ключа; есть и другие форматы).

Теперь нужно из публичного ключа сделать привычный число-буквенный адрес Bitcoin. Взглянем на схему:

Для получения адреса из публичного ключа вычисляем сначала RIPEMD160(SHA256(public-key)):

Дополняем его префиксом 0x0 (главная сеть Bitcoin):

Вычисляем контрольную сумму (нужна, чтобы наши денюжки не пропадали, если мы ошибемся в каком-то символе адреса). Контрольная сумма это первые 4 байта от SHA256(SHA256(r)):

Получаем адрес кошелька, закодировав в base58 сложенные r и checksum:

Генерация приватного ключа из своего источника случайностей, например, os.urandom:

Важно для конфиденциальных данных, вроде приватного ключа, использовать криптографически безопасный источник случайности. Об этом я писал в одной из недавних статей!

Полный пример кода генерации кошельков.

Проверить ключи и адрес можно здесь. (Нажимаем Skip, дальше Enter my own…)

Подробнее по теме можно почитать здесь.

Специально для канала @pyway. Подписывайтесь на мой канал в Телеграм @pyway 👈

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Bitcoin private key generator python

Generate Bitcoin Private Keys and check them against blockstreams liquid api. I’ve tried blockcypher and blockexplorer.com but run into issues with limits that I’m FAAARRR to lazy to work around with a round robin of profile switches or setup a full archival node of my own to fire against. Feel free to fund my

Stupid Python3 Script that Generates random private keys and checks them in realtime. call this poor mans Mining for BTC — same chances as solo but you could find an address w/ money in it 🤑 This is for entertainment only and is designed to demonstrate how IMPOSSIBLE it is to realistically get a collision and take control of someone else’s coin. Credits to @Shlomi for the inspiration.

BIG OL DISCLAIMER: I cannot emphasize this enough — this is for DEMONSTRATION and ENTERTAINMENT purposes . you will have much better success finding employment, buying bitcoin and holding it than to have this little goofy script find a populated private key with a balance. though if you happen to find a populated address you may as well call the pressess and let em know you beat the odds with that extreme luck.

1. Clone this script — download it or in the terminal use git clone https://github.com/Frankenmint/PKGenerator_Checker/
2. Let’s install some dependencies! pip install ecdsa hashlib base58 requests cfscrape
3. Navigate to the directory: cd PKGenerator_Checker
4. Run it! python PkMaker.py

• What’s Going on?: A random 32 byte Number is generated and encoded into Hex — Basially a number between 1 and 2^256 OR if counting in decimal form: 115792089237316195423570985008687907853269984665640564039457584007913129639936. Then, that key is hashed a few times into a public address according to these standard rules and is fired off to blockexplorer.com using their API. The script then prints the balance to the console window.
• I threw this together while following along this video series and reccomend YOU instead watch through the tutorials for your own benefit and to better grasp what happens at the protocol level for Bitcoin

* I had to use cfscraper to get around the issue of cloudflare on the v2 version of the script which uses bitcoinlist.io this version will scan an entire page at a time of keys..though idk if the underlying site is to be trusted (ie they just tell you the funds are zero and sweep the funds into their own wallet first)

TODO: I believe the richlist is down right now but someone offerred a different page which I’ll look intoat some point.

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Bitcoin address generation in pure python

Bitcoin address generation can be split in 4 steps listed bellow:

• Generating a secure private key.
• Calculate the public key from the private key.
• Encode the public key as a bitcoin address.
• Encode the private key in the WIF format.

Step 1: Generate ECDSA Keypair

The very first step is to select a good and secure number, for this example we won’t use one, instead we will simply get the random from the system. An example why is important a good and secure random number is written in this post about cracking some bitcoin private keys, the bug isn’t located in the key generation, but in the random used to sign the transactions, but the point is the same, weak PRNG (Pseudo-random number generators) can put everything in risk.

Using this PRNG can be done with:

Step 2: Calculate the public key

Since bitcoin uses spec256k1 the only thing that we need to do is multiply it by the initial point in the curve by the private key to obtain the public key.

Next step is to convert the key to a byte array and hash it, first with SHA-256 then with RIPEMD-160. Then we prepend the hashed public key with 0x00 if the target network is the mainnet, if the address generated meant to be used in the testnet 0x6f must be prepended.

Checksum

Then the only thing left to add in the address it the checksum, it is appended to the address and is the last 4 bytes of the double SHA-256 of the address calculated above.

Then just encode the key bytes to base58 and you have your Bitcoin address !

Public key compression

When representing the public key as a number is possible to compress it considering that the key is $x$ and $y$ in the eliptic curve and since we have the equation, and given an $x$ value, there is only two values for $y$ possible. So to compress a public key, if $y$ is odd, 0x03 is appended to the $x$ value, else, 0x02 is appended.

Step 4: Encode the private key in the WIF format

To create a WIF () key from the private key bytes is far simples than the previous steps, first prepend the byte 0x80 to the wif, then append the private key bytes. After, append the checksum, that is the last 4 bytes of the double SHA-256 of the partial wif key that we already have calculated.

Source code

This is a reference script, it depends on Python 3 to run and is self contained, it means no external dependencies are required to run it. One example of its output:

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Bitcoin private key generator python

Bitcoin Private Key Hunter

This package can help you hunt for bitcoins. It works by randomly generating a bitcoin private key, finding the corresponding public key / bitcoin address, and checking this key against a list addresses known to hold a lot of bitcoin. If a match is found, it will save the private key, public key, and other types of key formats generated into a text document and email you with the information as well.

• Download the package
• Make sure python3 and all of the projects dependancies are installed
• update the env.example.py file with your amazon SES information
• copy the env.example.py file into a file called env.py
• run th example file given to start. See below for code.

The Bitcoin Finder uses a number of other classes to perform its function. However its main function is to pull everything together so that you can effectively send yourself an email and save any keys you find. You can hunt for bitcoins with the following:

You will want to set an env file (to hold your SES info), if you fail to set the env file, you will not receive an email, but you can still use the application. The application will fail however if you fail to set an AddressList — a simple array of private keys.

About

This python project lets you hunt for public and private matching key pairs from bitcoin addresses with the largest number of bitcoins. Simply run the script to start hunting and if your lucky (extremely lucky) cash out on millions of dollars of bitcoin.)

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Bitcoin wallet address and private key generator

I wanted to learn how to create a Bitcoin wallet in code. I used as reference this guide which has code examples in JavaScript.

I wrote my implementation in Python. Here is the resulting code:

I have my concerns about the correctness of the generated keys, as well as for the private key in WIF format. In theory it should be a short string.

4 Answers 4

IMPORTANT.

Not a Python tip, but rather a MUST when it comes to sensitive information (quote from @nzall’s comment):

Those private keys should NEVER, EVER be posted in a location even as remotely public as a code review site. More, replacing them is not enough. For all purposes, you should now view the original keys as compromised and must NEVER EVER EVER use them again for bitcoin storage. Doing so runs high risk of losing the bitcoins stored in them

I just made this tip a bit more seeable for everybody.

Another three small observations, in addition to what @Graipher said.

In Python you can «chain» comparison operations which just means they are «and«ed together.

In your case, it’d be like this:

Read more about it here

More, I’d recommend you use .format() when it comes to printing:

You should also have two blank lines between your functions (instead of a single one)

For more details / suggestions / improvements regarding your code layout, you could take a look at PEP8, Python’s official style guide.

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