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import os
import random
from io import BytesIO
import tkinter.messagebox
from tkinter import *
import imageio
from PIL import ImageDraw
from PIL import ImageFont
from PIL import Image, ImageTk
class LabelDisplay(Label):
def __init__(self, master, filename):
image = Image.open(filename)
sequence = []
try:
while 1:
sequence.append(image.copy())
image.seek(len(sequence))
except EOFError:
pass
try:
self.delay = image.info['duration']
except KeyError:
self.delay = 100
begin = sequence[0].convert('RGBA')
self.frames = [ImageTk.PhotoImage(begin)]
Label.__init__(self, master, image=self.frames[0])
frameTemp = sequence[0]
for image in sequence[1:]:
frameTemp.paste(image)
frame = frameTemp.convert('RGBA')
self.frames.append(ImageTk.PhotoImage(frame))
self.frameID = 0
self.cancel = self.after(self.delay, self.play)
def play(self):
self.config(image=self.frames[self.frameID])
self.frameID += 1
if self.frameID == len(self.frames):
self.frameID = 0
self.cancel = self.after(self.delay, self.play)
class DynamicVerificationCode(object):
def __init__(self, breadth=200, vertical=55, strcount=5, fontsize=40, arccount=20, linecount=3,
number_of_frames=30):
self.breadth = breadth
self.vertical = vertical
self.strcount = strcount
self.fontsize = fontsize
self.arccount = arccount
self.linecount = linecount
self.number_of_frames = number_of_frames
def Colorconfusion(self):
colorr = random.randint(0, 255)
colorg = random.randint(0, 255)
colorb = random.randint(0, 255)
return colorr, colorg, colorb
def StrInDVC(self):
number = str(random.randint(0, 9))
xiaoxieap = chr(random.randint(97, 122))
daxieap = chr(random.randint(65, 90))
reStr = random.choice([number, xiaoxieap, daxieap])
return reStr
def LineConfusion(self, createpic=None):
for i in range(self.linecount):
sourcex = random.randint(0, self.breadth)
destx = random.randint(0, self.breadth)
sourcey = random.randint(0, self.vertical)
desty = random.randint(0, self.vertical)
createpic.line((sourcex, sourcey, destx, desty), fill=self.Colorconfusion())
def ArcConfusion(self, createpic=None):
for i in range(self.arccount):
createpic.point([random.randint(0, self.breadth), random.randint(0, self.vertical)],
fill=self.Colorconfusion())
x = random.randint(0, self.breadth)
y = random.randint(0, self.vertical)
createpic.arc((x, y, x + 4, y + 4), 0, 90, fill=self.Colorconfusion())
def Create(self):
StrInDVCList = []
for i in range(self.strcount):
s = self.StrInDVC()
StrInDVCList.append(s)
background = self.Colorconfusion()
picSequence = []
for i in range(self.number_of_frames):
DVC = Image.new('RGB', (self.breadth, self.vertical), background)
createpic = ImageDraw.Draw(DVC)
fontInDVC = os.path.join(os.getcwd(), "COOPBL.TTF")
font = ImageFont.truetype(fontInDVC, size=self.fontsize)
for i, code in enumerate(StrInDVCList):
y = random.randint(int(-0.133 * self.vertical), int(0.267 * self.vertical))
x = random.randint(14, 22)
createpic.text((x + i * (self.breadth / self.strcount), y), code, self.Colorconfusion(), font=font)
self.LineConfusion(createpic)
self.ArcConfusion(createpic)
PNGfile = BytesIO()
DVC.save(PNGfile, "png")
data = PNGfile.getvalue()
PNGfile.close()
data = imageio.imread(data, format="png")
picSequence.append(data)
return picSequence, "".join(StrInDVCList)
class GUI:
def __init__(self):
self.ans = self.DVCCreate()
self.root = Tk()
self.root.geometry('500x400+500+300')
self.root.resizable(False, False)
self.root.title("Dynamic Verification Code")
self.anim = LabelDisplay(self.root, 'Dynamic_verification_code.gif')
self.anim.pack(side="top")
self.entryCode = tkinter.Entry(self.root)
self.entryCode.place(x=150, y=200, width=200, height=30)
self.w = Label(self.root, text="Please enter the verification code below:")
self.w.place(x=121, y=168)
self.ww = Label(self.root, text="Cybersecurity Coursework Build Date: December 8, 2021", font=('Consolas', 8),
fg='DarkRed')
self.ww.place(x=135, y=382)
self.www = Label(self.root,
text="You can refer to the comments to adjust the parameters of the DynamicVerificationCode("
") function to adjust the style of the dynamic verification code.",
wraplength=244,
font=('Consolas', 10))
self.www.place(x=135, y=255)
self.btnCheck = tkinter.Button(self.root, text='Submit', width=20, height=2, command=self.check)
self.btnCheck.pack(side='bottom', pady=20)
self.btnRe = tkinter.Button(self.root, text='Refresh', width=20, height=2, command=self.Re)
self.btnRe.place(x=158, y=75)
self.root.mainloop()
self.Re()
def DVCCreate(self):
img = DynamicVerificationCode(200, 55, 5, 40, 20, 3, 30)
seq, ans = img.Create()
imageio.mimsave("Dynamic_verification_code.gif", seq, 'GIF', duration=0.3)
print("The verification code characters are " + ans)
return ans
def check(self):
if self.entryCode.get() == "":
tkinter.messagebox.showerror('DVC Fatal Error', 'The verification code is empty!')
else:
if self.entryCode.get() == self.ans:
tkinter.messagebox.showwarning('DVC Success', 'Successfully verified!')
else:
tkinter.messagebox.showerror('DVC Fail', 'Verification code error! Please try again.')
def Re(self):
print("Re")
self.ans = self.DVCCreate()
self.anim.pack_forget()
self.anim = LabelDisplay(self.root, 'Dynamic_verification_code.gif')
self.anim.pack(side="top")
self.root.update()
if __name__ == "__main__":
GUI()
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