git clone https://aur.archlinux.org/oracle-xe.git
cd oracle-xe
wget http://download.oracle.com/otn/linux/oracle11g/xe/oracle-xe-11.2.0-1.0.x86_64.rpm.zip
| # https://bitcoin.stackexchange.com/a/59806 | |
| def secp256k1(s): | |
| P = 2**256 - 2**32 - 2**9 - 2**8 - 2**7 - 2**6 - 2**4 - 1 | |
| N = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 | |
| G = (0x79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798, | |
| 0x483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8) | |
| def add(p, q): |
Hal Finney's explanation of secp256k1 "efficiently computable endomorphism" parameters used secp256k1 libraries, archived from source.
The same optimization could be applied to any Koblitz curve (e.g. Short Weistrass curve with a=0).
I implemented an optimized ECDSA verify for the secp256k1 curve, based on pages 125-129 of the Guide to Elliptic Curve Cryptography, by Hankerson, Menezes and Vanstone. I own the book but I also found a PDF on a Russian site which is more convenient.
secp256k1 uses the following prime for its x and y coordinates:
| #!/bin/bash | |
| ### steps #### | |
| # verify the system has a cuda-capable gpu | |
| # download and install the nvidia cuda toolkit and cudnn | |
| # setup environmental variables | |
| # verify the installation | |
| ### | |
| ### to verify your gpu is cuda enable check |
| import argparse | |
| import urllib3 | |
| from urllib3 import util | |
| import json | |
| import math | |
| LIMIT = 120 | |
| SATOSHI = 1e+8 | |
| [ | |
| "access-point", | |
| "access-point-network", | |
| "access-point-network-off", | |
| "account", | |
| "account-alert", | |
| "account-alert-outline", | |
| "account-arrow-left", | |
| "account-arrow-left-outline", | |
| "account-arrow-right", |
| #!/bin/bash | |
| echo | |
| echo "Welcome to the Bitcoin address generator!" | |
| echo "input private key (32 bytes, hex format)" | |
| read priv | |
| echo "" | |
| echo "#####################################" | |
| # priv=0C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D # Testing only |
Note: This tutorial will cover setting up a
firewalldfirewall and making your system a router.firewalldis preinstalled on CentOS and Red Hat Enterprise Linux systems.
To follow the contents of this tutorial, be sure to follow inside a terminal. Most operations require super user priviliges. For the sake of the tutorial, be sure all commands are executed as root or execute all commands with sudo.
Replace any instances of vi with your command-line editor of choice. Possible editors include:
| {{ $var }} - Echo content | |
| {{ $var or 'default' }} - Echo content with a default value | |
| {{{ $var }}} - Echo escaped content | |
| {{-- Comment --}} - A Blade comment | |
| @extends('layout') - Extends a template with a layout | |
| @if(condition) - Starts an if block | |
| @else - Starts an else block | |
| @elseif(condition) - Start a elseif block | |
| @endif - Ends a if block |