Randbit | Generate random bitcoin private key and check it 's balance | Cryptocurrency library
kandi X-RAY | Randbit Summary
kandi X-RAY | Randbit Summary
Generate random bitcoin private key and check it's balance automatically.
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Top functions reviewed by kandi - BETA
- Main function
- Get the balance of an address
- Send an email
- Get balance of given address
- Returns the balance block balance
- Log a message
- Convert a private key to a base58 address
- Hash aripemd160
- Load configuration from configuration
- Sends an email
Randbit Key Features
Randbit Examples and Code Snippets
Community Discussions
Trending Discussions on Randbit
QUESTION
I have been trying to implement the Fermat Test in a python script to generate a large prime number, and I was hoping to use it on big primes, and it works quickly and almost perfectly for 16 bit generations, but if I set it to 32 it just doesn't run at all.
For quick context, the Fermat test is supposed to run x amount of trials (set to 5 in my code just so I can see if it works, but in use I would probably set it higher to ~20 or something) to test if a number is prime or not. So I am generating large numbers using secrets.randbits then checking them with the Fermat test to see if they are prime, and if they are not I pick a different prime and run it again until I find one.
With bits set to 16, the code runs quickly, printing many different numbers to the logs that are tested before finding out they are composite and choosing a different one, but once set to 32 nothing is printed at all, and I really have no idea why. Does secrets.randbits only work/take exponentially longer for increased bits, because at 16 bits the program runs almost instantaneously, but it doesn't seem to work at all at 32.
Here is my code:
...ANSWER
Answered 2020-Aug-23 at 03:03The good news: this has nothing to do with secrets. Change this:
QUESTION
A very novice question I'm afraid, but I've tried my best to understand this and have got nowhere as I have little experience with C programming.
I'm currently picking up an old project from a year or two ago from Instructables: https://www.instructables.com/id/Jar-of-Fireflies/
This includes a C file for firmware written for a Firefly pattern, however this was written a good 12 years ago.
However... I am not following the instructable to the Nth degree. Instead I am using a DIP AtTiny85, which I have previously programmed using an Arduino as ISP. And hence want to be able to compile the code in Arduino IDE or Atmel Studio, with Visual Micro plugin.
Every time this is compiled in Arduino IDE, I receive the following error: 'prog_uint8_t' does not name a type, and this causes lots of errors to roll through.
From what I understand, this deceleration was removed/changed as part of the AVR GCC in around 2010ish... Is there anyway I can get this to compile correctly to run the code? Maybe using a macro or including a library. I have tried a few libraries such as #include , but believe this should be taken care of as part of automated include. I'm sure if I brought the proper programmer my problem may go away but I'm sure there is an easy fix for this..?
Code provided as .tgz in instructable link above which includes headers, c executables, hex etc.,
for quick reading of the main c executable declarations....
...ANSWER
Answered 2019-Jul-14 at 01:48It was depreciated however you should be able to get it to work by adding the following code before your usage of prog_uint8_t
QUESTION
Context: Image: XOR first and second, to form heart-shaped pixel art
I am creating a visual one-time-pad program which splits the input bitmap into two different random lists of bits which, when XOR-ed together, should reproduce the input bitmap - kind of a "reverse-reverse-engineering".
As a highly-simplified explanation, each newly-created bitmap is given to 2 independent recipients. They may trust each other if theirs combine to form a specified shape (see below).
In my example above, the pixel inputs - and eventual output - form a heart-shape in the middle.
Attempt: Originally, my code successfully assigned appropriate bits to two separate lists, depending on whether the input bit was zero or one. (The randomness was included since I wanted different outputs to work with each time.) This was all fine when the input simply showed just a black (i.e string of 1s) heart on a white background: Image: binary representation
...ANSWER
Answered 2019-Dec-31 at 00:04I have no idea why you would like random noise around the heart, but just using temp2.append(random.choice((0, 1)) independent of the value of randbit would do it (for case A exclusively, if 0 means white and the heart is black).
Two random bits XOR'ed together still generate a random bit value, after all.
QUESTION
What I am doing is generating 'dummy' wallets, retrieving both a mnemonic passphrase and wallet from raw entropy, which is generated using secrets.randbits(128) – resulting in a valid bip39 pair of keys.
The error I get is along these lines:
...ANSWER
Answered 2019-Mar-17 at 23:24This is a bug in btclib.
The function bip39.mnemonic_from_raw_entropy() calls bip39.entropy_from_raw_entropy(), which calls entropy.str_from_entropy().
When entropy.str_from_entropy() is called with an integer as its entr argument, it attempts to convert that integer into a string representing the bits, here:
QUESTION
Suppose you're given a int randBit() function which returns, uniformly distributed, 0 or 1.
Write a randNumber(int max) function.
This is my implementation, but I can't prove/disprove that it's right.
...ANSWER
Answered 2017-Oct-23 at 05:31The approach to fill an int with random bits is the right way in my opinion. However, since your algorithm only works when max is power of 2 and is off by one in the loop, I'd suggest this modification:
QUESTION
Can anyone tell me why this code runs differently in python console than IDLE?
...ANSWER
Answered 2017-Sep-30 at 06:43Because it's a GUI program (running on Tkinter) IDLE has a few quirks; the plain console is actually behaving correctly, since output to stdout is normally line-buffered.
If you don't want your dots to appear all at once you can tell the console to flush its output:
QUESTION
How would I make a scatter plot using (number, value) where number is on a number line; there are no negative values on either variable. pseudocode:
ANSWER
Answered 2017-Sep-18 at 11:12My own solution:
QUESTION
Files do persist on-disk after being "Deleted" or "Permanently Deleted." Some may not want a file to persist. To that end, I've written this:
...ANSWER
Answered 2017-Feb-20 at 09:43When working with a file object, does the "wb+" mode write directly over the contents in the physical location of the physical disk allocated for a file?
In POSIX, it's not guaranteed for an arbitrary filesystem. It may work for some fixed implementation with some fixed mount options, though.
See for example shred(7):
CAUTION: Note that shred relies on a very important assumption: that the file system overwrites data in place. This is the traditional way to do things, but many modern file system designs do not satisfy this assumption. The following are examples of file systems on which shred is not effective, or is not guaranteed to be effective in all file system modes:
log-structured or journaled file systems, such as those supplied with AIX and Solaris (and JFS, ReiserFS, XFS, Ext3, etc.)
file systems that write redundant data and carry on even if some writes fail, such as RAID-based file systems
file systems that make snapshots, such as Network Appliance's NFS server
file systems that cache in temporary locations, such as NFS version 3 clients
compressed file systems
In the case of ext3 file systems, the above disclaimer applies (and shred is thus of limited effectiveness) only in data=journal mode, which journals file data in addition to just metadata. In both the data=ordered (default) and data=writeback modes, shred works as usual. Ext3 journaling modes can be changed by adding the data=something option to the mount options for a particular file system in the /etc/fstab file, as documented in the mount man page (man mount).
You can also take a look at shred.c.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install Randbit
You can use Randbit like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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