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Hey Bitcoiners, here are my short Python 3 scripts to generate a Bitcoin address. A few months back I wrote some Python 3 scripts to generate Bitcoin addresses. They work just like Brainwallet does, and in fact are 100% comaptible with brainwallet - you can copy the private key into brainwallet and expect everything to work. In Python, there is a module called Decimal, which is used to do some decimal floating point related tasks. This module provides correctly-rounded floating point arithmetic. To use it at first we need to import it the Decimal standard library module. Import decimal.

In Python, there is a module called Decimal, which is used to do some decimal floating point related tasks. This module provides correctly-rounded floating point arithmetic.

To use it at first we need to import it the Decimal standard library module. /precision-tune-auto-care-arlington.html.

In this section we will see some important functions of the Decimal module.

The square root function sqrt() and Exponent function exp()

The sqrt() method is used to calculate the square root of a given decimal type object. And the exp() method returns the e^x value for the given x as Decimal number.

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The logarithmic functions

There are some logarithmic functions in the Decimal module. Here we are discussing about two of them. The first one is the ln() method. This method is used to find the natural logarithm of the decimal number.

Another method is log10() method. This method is used to find the logarithmic value where base is 10.

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The as_tuple() and the fma() method

The as_tuple method is used to represent the decimal as a tuple with three elements. The elements are sign, digits and the exponent value. In the sign field when the number is 0, it means the decimal is positive, when it is 1, it represents the negative number.

The fma() method is known as the fused multiplication and add. If we use fma(x, y) It will compute the (number * x) + y. In this case the (number*x) part is not rounded off.

Example Code

Python Generate Private Key Based On Decimal

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The compare() method

This compare method is for comparing two decimal numbers. When the numbers are same, it will return 0, otherwise, when the first number is greater, it will give +1, and when first argument is smaller, it will return -1.

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Some copying functions

There are some different methods for copying decimal numbers into another decimal object. The first method is copy_abs(). It is used to get the absolute value from the decimal number. The second method is copy_negate(), It is used to copy the decimal number after negating the actual number. The third function is copy_sign(). this method prints the first argument, by taking the sign from the second argument.

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The max and min methods

The max and min are two simple methods. These are used to find the maximum or minimum between two numbers respectively.

Python Generate Private Key Based On Decimal Calculator

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Python PyCrypto: Generate RSA Keys Example.py
defgenerate_RSA(bits=2048):
''
Generate an RSA keypair with an exponent of 65537 in PEM format
param: bits The key length in bits
Return private key and public key
''
fromCrypto.PublicKeyimportRSA
new_key=RSA.generate(bits, e=65537)
public_key=new_key.publickey().exportKey('PEM')
private_key=new_key.exportKey('PEM')
returnprivate_key, public_key

commented Aug 5, 2016
edited

Pycrypto is unmaintained and has known vulnerabilities. Use pycryptodome, it is a drop-in replacement.

commented Aug 16, 2016
edited

Python Generate Private Key Based On Decimals

Generate

commented Jan 17, 2017

e should be random methinks =P

commented May 17, 2017
edited

@miigotu 'youthinks' wrong. e should be chosen so that e and λ(n) are coprime. It is not chosen at random, and since it is usually small for computation reasons, and included in the public key, it can always be known by an attacker anyway.

commented Aug 17, 2017

from Crypto.PublicKey import RSA
code = 'nooneknows'

key = RSA.generate(2048)
privatekey = key.exportKey(passphrase=code, pkcs=8)
publickey = key.publickey().exportKey()

commented Jan 15, 2018

Nice But How Can I Write The Private Key I Tried This:
f = open('PublicKey.pem','w')
f.write(publick_key)
f.close()

BUT IT DOESN'T WORK WITH THE PRIVATE KEY, JUST RETURNS 0B

commented Jan 30, 2018

How To Use Decimal In Python

@WarAtLord try publick_key.exportKey('PEM')

Python Generate Private Key Based On Decimal Form

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