How to specify PrivateKey search range in HEX?

2

I am trying to generate random bitcoin Private_Keys in HEX format (32bit) but I want the randomness to have a value within a specific HEX range, say between 

18909BDE11F67C97A53C62F45E632EAB58EA0D73A5FAC9EB50295FAD40A57EB5

and 

DD10559E1285B3EE0303B159B8D6D8D0B88E6168D1C1D6000000000000000000

The following piece of code in Python 3 is a start but it simply generates random keys for the curve's entire field which is up to

FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141

This is the code:

generate_private_key():
    return binascii.hexlify(os.urandom(32)).decode('utf-8').upper()

How to specify the desired search range expanding on the above code?

Thanks.

RobertH

Posted 2019-02-05T15:50:50.153

Reputation: 151

Do you need to use Python for that? Because vanitygen-plus, an unofficial version of vanitygen can be used for that easily. – MCCCS – 2019-02-05T16:51:33.870

Yes, I am looking for suggestions for Python 3 based on the code from the question. – RobertH – 2019-02-05T18:08:13.223

may be something like this (pseudo code): const(32) + rand(8) – D L – 2019-02-05T18:35:26.880

Answers

1

Use random.
Using your low and high values:

import random
def generate_private_key():
    low  = 0x18909BDE11F67C97A53C62F45E632EAB58EA0D73A5FAC9EB50295FAD40A57EB5
    high = 0xDD10559E1285B3EE0303B159B8D6D8D0B88E6168D1C1D6000000000000000000
    return str( hex( random.randrange( low, high ) ) )

And then just:

print(generate_private_key())

Note that you'll probably need to convert this hex address to wif, or extract a public key or bitcoin public address from it... If you need more easy Python code for doing this, you can check these little pieces of code.

circulosmeos

Posted 2019-02-05T15:50:50.153

Reputation: 526

Asked: 2019-02-05T15:50:50.153

Viewed: 637 times

Active: 2019-02-07T12:57:08.480