gitzhou

def extended_euclid_gcd(a: int, b: int) -> list:
    """
    Returns [gcd(a, b), x, y] where ax + by = gcd(a, b)
    """
    s, old_s = 0, 1
    t, old_t = 1, 0
    r, old_r = b, a
    while r != 0:
        quotient = old_r // r
        old_r, r = r, old_r - quotient * r

gitzhou

import hashlib
from binascii import hexlify


def sha256(payload: bytes) -> bytes:
    return hashlib.sha256(payload).digest()


def double_sha256(payload: bytes) -> bytes:
    return sha256(sha256(payload))

gitzhou

from ec_point_operation import curve
from crypto import ripemd160_sha256, b58check_encode, b58check_decode
from binascii import hexlify


def int_to_varint(value: int) -> bytes:
    if value <= 0xfc:
        return value.to_bytes(1, 'little')
    elif value <= 0xffff:
        return b'\xfd' + value.to_bytes(2, 'little')

gitzhou

from pytz import timezone
from datetime import datetime

now = timezone('Asia/Shanghai').fromutc(datetime.utcnow())
print(now.strftime('%Y-%m-%d %H:%M:%S'))

gitzhou

from bitsv.base58 import b58encode, b58decode
from bitsv.crypto import ECPrivateKey, sha256, hash160
from binascii import hexlify

#
# pip install bitsv
#
# https://aaron67.cc/2019/01/04/bitcoin-address/
#
print()

gitzhou

// https://github.com/crypto-browserify/pbkdf2
//
const crypto = require('crypto');

const hash = 'sha512'
const round = 2048
const seed_bytes = 64

var mnemonic = 'furnace tunnel buyer merry feature stamp brown client fine stomach company blossom'
var passphrase = ''

gitzhou

//
//  main.cpp
//  hex-to-oct
//
//  Created by aaron67 on 2017/1/23.
//  Copyright © 2017年 aaron67. All rights reserved.
//

#include <iostream>
#include <iomanip>

gitzhou

//
//  main.cpp
//  hex-to-oct
//
//  Created by aaron67 on 2017/1/23.
//  Copyright © 2017年 aaron67. All rights reserved.
//

#include <iostream>
#include <string>

gitzhou

{
	"auto_complete": true,
	"auto_complete_commit_on_tab": true,
	// 在选中区域搜索
	"auto_find_in_selection": true,
	"bold_folder_labels": true,
	"color_scheme": "Packages/Color Scheme - Default/Monokai Bright.tmTheme",
	"create_window_at_startup": false,
	"draw_white_space": "all",
	"highlight_line": true,

gitzhou

//
//  main.cpp
//  two-eggs-problem
//
//  Created by aaron67 on 15/2/12.
//  Copyright (c) 2015年 aaron67. All rights reserved.
//
//  参考：http://ppwwyyxx.com/2013/Problem-of-Two-Eggs/
//
//  题目描述：