python - Hashing a time-string: Why not receive same results? -


why following code not generate @ least few identical md5 strings:

import hashlib import time  hasher = hashlib.md5()  def calchash():         localtime   = time.localtime()         timestring  = time.strftime("%y-%m-%d-%h-%m-%s", localtime)         print(timestring)         hasher.update(timestring.encode('utf-8'))         print("calculated: " + hasher.hexdigest())  in range(1,10):         calchash()

i feeding not time stamp, generated string hasher. i'd expect identical md5 hashes if feed same string twice hasher.

2015-04-26-09-50-24 calculated: 52cae4a4231c812e5b79102a55721282 2015-04-26-09-50-24 calculated: 0329298a8a18246fc1fc2f9878252dcf 2015-04-26-09-50-24 calculated: 3db4562ca628a76c863f1308b8c41b04 2015-04-26-09-50-24 calculated: 51c482a637405897cd5d91f2145e424f 2015-04-26-09-50-24 calculated: 297eb85857fc85533a785fb13c200bdc 2015-04-26-09-50-24 calculated: 4288a660c70ee9ed40a8e7611176af91 2015-04-26-09-50-24 calculated: 4b998d607dba97578447d21cd82f6f33 2015-04-26-09-50-24 calculated: 45b93b13df62be5e3616ee89b7e803cc 2015-04-26-09-50-24 calculated: 0dbce249b10195b2a28b1825032e455c

you not resetting hasher. therefore, subsequent hashes hashes of accumulated strings.

change to:

def calchash():         hasher = hashlib.md5()         localtime   = time.localtime()         timestring  = time.strftime("%y-%m-%d-%h-%m-%s", localtime)         print(timestring)         hasher.update(timestring.encode('utf-8'))         print("calculated: " + hasher.hexdigest())

Comments

Post a Comment

Popular posts from this blog

jquery - How do you format the date used in the popover widget title of FullCalendar? -

Image
in fullcalendar, how format date used in popover widget title when clicking '+n more'? code: <div class="fc-popover fc-more-popover"> <div class="fc-header fc-widget-header"> <span class="fc-close fc-icon fc-icon-x"></span> <span class="fc-title">tuesday, april 7</span> ... </div> ... </div> you use daypopoverformat that. determines date format of title of popover created eventlimitclick option. must date formatting string. default value "dddd, mmmm d" english , "ll" other languages.
Read more

asp.net mvc - SSO between MVCForum and Umbraco7 -

i need integrate sso between mvcforum (forum of company) , umbraco7 (manages cms company). however struggling shared authentication work. tried several ways suggested on other threads still not running expected. here did: 1. in mvcforum (forum.mywebsite.com) 1.1. machine key in web.xml: <machinekey validationkey="the same key umbraco7" decryptionkey="the same key umbraco7" validation="sha1" decryption="aes" /> 1.2. authenticate forms in web.xml <forms name="my-sso-auth" protection="all" path="/" timeout="43200" domain="forum.mywebsite.com" loginurl="/members/logon" enablecrossappredirects="true" /> 2. in umbraco7 (news.mywebsite.com) 2.1. machine key in web.xml: <machinekey validationkey="the same key mvcforum" decryptionkey="the same key mvcforum" validation="sha1" decryption="aes" /> 2.2. a...
Read more

Python Tkinter keyboard using bind -

i have problem using bind option can click button in keyboard, , call function once key pressed. tried taking other codes have similar purpose , saw i'm doing pretty same, though still have problem must've missed. thankful if me this. here's code: # -*- coding: utf-8 -*- #imports tkinter import * pil import imagetk, image import time import tkmessagebox #===========================================================================================================================================# #tkinter class class app(frame): def __init__(self, master=none): frame.__init__(self, master) self.pack() #===========================================================================================================================================# #game pieces classes class board: def __init__(self, rows = 7, columns = 6, picture_height = none, picture_width = none): self.rows = rows self.columns = columns self.picture ...
Read more