python 加密方式

code

#coding=utf-8
import os
import random
import time


def test(book_type,book_id):
    #获取指定长度的随机数字
    #支持16进制数的最大的长度为9
    random_str_length=random.randint(3,6)
    indexlist=range(1,10)  
    indexs=random.sample(indexlist,random_str_length)
    #随机字符串
    random_str=""
    for i in indexs:
        random_str+=str(i)
    #假设book_id 长度<=9
    book_id_length=len(str(book_id))
    timestamp="".join(str(time.time()).split("."))
    out_trade_no = timestamp+str(book_type)+random_str+str(random_str_length)+str(book_id)+str(book_id_length)

    return out_trade_no

out_trade_no=test(80,1110)
print(out_trade_no)

#123123123165123310004
#解析出book_id,book_type
book_id_length=int(out_trade_no[-1])

left=0-(book_id_length+1)
book_id=int(out_trade_no[left:-1])
print(book_id)

random_str_length=int(out_trade_no[0-(book_id_length+2)])

left=0-(random_str_length+book_id_length+4)
right=0-(random_str_length+book_id_length+2)

book_type=out_trade_no[left:right]

print(book_type)