└── Passing messages


/Passing messages:
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  1 | #import modules
  2 | from tkinter import *
  3 | import tkinter.filedialog
  4 | from tkinter import messagebox
  5 | from PIL import ImageTk
  6 | from PIL import Image
  7 | from io import BytesIO
  8 | import os
  9 | 
 10 | class IMG_Stegno:
 11 | output_image_size = 0
 12 | 
 13 | #main frame or start page
 14 | def main(self, root):
 15 | root.title('ImageSteganography by MKCE')
 16 | root.geometry('500x600')
 17 | root.resizable(width =False, height=False)
 18 | root.config(bg = '#e3f4f1')
 19 | frame = Frame(root)
 20 | frame.grid()
 21 | 
 22 | title = Label(frame,text='MKCE Image Steganography')
 23 | title.config(font=('Times new roman',25, 'bold'))
 24 | title.grid(pady=10)
 25 | title.config(bg = '#e3f4f1')
 26 | title.grid(row=1)
 27 | 
 28 | encode = Button(frame,text="Encode",command=
 29 | 
 30 | 
 31 | 
 32 | lambda :self.encode_frame1(frame), padx=14,bg = '#e3f4f1' )
 33 | encode.config(font=('Helvetica',14), bg='#e8c1c7')
 34 | encode.grid(row=2)
 35 | decode = Button(frame,
 36 | text="Decode",command=lambda :self.decode_frame1(frame), padx=14,bg =
 37 | '#e3f4f1')
 38 | decode.config(font=('Helvetica',14), bg='#e8c1c7')
 39 | decode.grid(pady = 12)
 40 | decode.grid(row=3)
 41 | 
 42 | root.grid_rowconfigure(1, weight=1)
 43 | root.grid_columnconfigure(0, weight=1)
 44 | 
 45 | #- back function to loop back to main screen
 46 | def back(self,frame):
 47 | frame.destroy()
 48 | self.main(root)
 49 | 
 50 | # frame for encode page
 51 | def encode_frame1(self,F):
 52 | F.destroy()
 53 | F2 = Frame(root)
 54 | label1= Label(F2,text='Select the Image in which \nyou want to hide text :')
 55 | label1.config(font=('Times new roman',25, 'bold'),bg = '#e3f4f1')
 56 | label1.grid()
 57 | 
 58 | button_bws = Button(F2,text='Select',command=lambda :
 59 | 
 60 | 
 61 | 
 62 | self.encode_frame2(F2))
 63 | 
 64 | button_bws.config(font=('Helvetica',18), bg='#e8c1c7')
 65 | 
 66 | button_bws.grid()
 67 | button_back = Button(F2, text='Cancel', command=lambda :
 68 | IMG_Stegno.back(self,F2))
 69 | button_back.config(font=('Helvetica',18),bg='#e8c1c7')
 70 | button_back.grid(pady=15)
 71 | button_back.grid()
 72 | F2.grid()
 73 | 
 74 | #frame for decode page
 75 | def decode_frame1(self,F):
 76 | F.destroy()
 77 | d_f2 = Frame(root)
 78 | label1 = Label(d_f2, text='Select Image with Hidden text:')
 79 | label1.config(font=('Times new roman',25,'bold'),bg = '#e3f4f1')
 80 | label1.grid()
 81 | label1.config(bg = '#e3f4f1')
 82 | button_bws = Button(d_f2, text='Select',
 83 | command=lambda :self.decode_frame2(d_f2))
 84 | button_bws.config(font=('Helvetica',18), bg='#e8c1c7')
 85 | button_bws.grid()
 86 | button_back = Button(d_f2, text='Cancel', command=lambda :
 87 | IMG_Stegno.back(self,d_f2))
 88 | button_back.config(font=('Helvetica',18), bg='#e8c1c7')
 89 | button_back.grid(pady=15)
 90 | button_back.grid()
 91 | d_f2.grid()
 92 | 
 93 | 
 94 | 
 95 | #function to encode image
 96 | def encode_frame2(self,e_F2):
 97 | e_pg= Frame(root)
 98 | 
 99 | myfile = tkinter.filedialog.askopenfilename(filetypes = ([('png', '*.png'),('jpeg',
100 | '*.jpeg'),('jpg', '*.jpg'),('All Files', '*.*')]))
101 | if not myfile:
102 | messagebox.showerror("Error","You have selected nothing !")
103 | else:
104 | my_img = Image.open(myfile)
105 | new_image = my_img.resize((300,200))
106 | img = ImageTk.PhotoImage(new_image)
107 | label3= Label(e_pg,text='Selected Image')
108 | label3.config(font=('Helvetica',14,'bold'))
109 | label3.grid()
110 | board = Label(e_pg, image=img)
111 | board.image = img
112 | self.output_image_size = os.stat(myfile)
113 | self.o_image_w, self.o_image_h = my_img.size
114 | board.grid()
115 | label2 = Label(e_pg, text='Enter the message')
116 | label2.config(font=('Helvetica',14,'bold'))
117 | label2.grid(pady=15)
118 | text_a = Text(e_pg, width=50, height=10)
119 | text_a.grid()
120 | encode_button = Button(e_pg, text='Cancel', command=lambda :
121 | IMG_Stegno.back(self,e_pg))
122 | encode_button.config(font=('Helvetica',14), bg='#e8c1c7')
123 | data = text_a.get("1.0", "end-1c")
124 | button_back = Button(e_pg, text='Encode', command=lambda :
125 | 
126 | 
127 | 
128 | [self.enc_fun(text_a,my_img),IMG_Stegno.back(self,e_pg)])
129 | button_back.config(font=('Helvetica',14), bg='#e8c1c7')
130 | button_back.grid(pady=15)
131 | encode_button.grid()
132 | e_pg.grid(row=1)
133 | 
134 | e_F2.destroy()
135 | 
136 | #function to decode image
137 | def decode_frame2(self,d_F2):
138 | d_F3 = Frame(root)
139 | myfiles = tkinter.filedialog.askopenfilename(filetypes = ([('png', '*.png'),('jpeg',
140 | '*.jpeg'),('jpg', '*.jpg'),('All Files', '*.*')]))
141 | if not myfiles:
142 | messagebox.showerror("Error","You have selected nothing! ")
143 | else:
144 | my_img = Image.open(myfiles, 'r')
145 | my_image = my_img.resize((300, 200))
146 | img = ImageTk.PhotoImage(my_image)
147 | label4= Label(d_F3,text='Selected Image :')
148 | label4.config(font=('Helvetica',14,'bold'))
149 | label4.grid()
150 | board = Label(d_F3, image=img)
151 | board.image = img
152 | board.grid()
153 | hidden_data = self.decode(my_img)
154 | label2 = Label(d_F3, text='Hidden data is :')
155 | label2.config(font=('Helvetica',14,'bold'))
156 | label2.grid(pady=10)
157 | 
158 | 
159 | 
160 | text_a = Text(d_F3, width=50, height=10)
161 | text_a.insert(INSERT, hidden_data)
162 | text_a.configure(state='disabled')
163 | text_a.grid()
164 | 
165 | button_back = Button(d_F3, text='Cancel', command=
166 | lambda :self.frame_3(d_F3))
167 | button_back.config(font=('Helvetica',14),bg='#e8c1c7')
168 | button_back.grid(pady=15)
169 | button_back.grid()
170 | d_F3.grid(row=1)
171 | d_F2.destroy()
172 | 
173 | #function to decode data
174 | def decode(self, image):
175 | image_data = iter(image.getdata())
176 | data = ''
177 | 
178 | while (True):
179 | pixels = [value for value in image_data.__next__()[:3] +
180 | image_data.__next__()[:3] +
181 | image_data.__next__()[:3]]
182 | binary_str = ''
183 | for i in pixels[:8]:
184 | if i % 2 == 0:
185 | binary_str += '0'
186 | else:
187 | binary_str += '1'
188 | 
189 | 
190 | 
191 | data += chr(int(binary_str, 2))
192 | if pixels[-1] % 2 != 0:
193 | return data
194 | 
195 | #function to generate data
196 | 
197 | def generate_Data(self,data):
198 | new_data = []
199 | 
200 | for i in data:
201 | new_data.append(format(ord(i), '08b'))
202 | return new_data
203 | 
204 | #function to modify the pixels of image
205 | def modify_Pix(self,pix, data):
206 | dataList = self.generate_Data(data)
207 | dataLen = len(dataList)
208 | imgData = iter(pix)
209 | for i in range(dataLen):
210 | # Extracting 3 pixels at a time
211 | pix = [value for value in imgData.__next__()[:3] +
212 | imgData.__next__()[:3] +
213 | imgData.__next__()[:3]]
214 | 
215 | for j in range(0, 8):
216 | if (dataList[i][j] == '0') and (pix[j] % 2 != 0):
217 | if (pix[j] % 2 != 0):
218 | pix[j] -= 1
219 | 
220 | 
221 | 
222 | elif (dataList[i][j] == '1') and (pix[j] % 2 == 0):
223 | pix[j] -= 1
224 | 
225 | if (i == dataLen - 1):
226 | if (pix[-1] % 2 == 0):
227 | pix[-1] -= 1
228 | else:
229 | 
230 | if (pix[-1] % 2 != 0):
231 | pix[-1] -= 1
232 | 
233 | pix = tuple(pix)
234 | yield pix[0:3]
235 | yield pix[3:6]
236 | yield pix[6:9]
237 | 
238 | #function to enter the data pixels in image
239 | def encode_enc(self,newImg, data):
240 | w = newImg.size[0]
241 | (x, y) = (0, 0)
242 | 
243 | for pixel in self.modify_Pix(newImg.getdata(), data):
244 | 
245 | # Putting modified pixels in the new image
246 | newImg.putpixel((x, y), pixel)
247 | if (x == w - 1):
248 | x = 0
249 | y += 1
250 | else:
251 | 
252 | 
253 | 
254 | x += 1
255 | 
256 | #function to enter hidden text
257 | def enc_fun(self,text_a,myImg):
258 | data = text_a.get("1.0", "end-1c")
259 | if (len(data) == 0):
260 | messagebox.showinfo("Alert","Kindly enter text in TextBox")
261 | else:
262 | 
263 | newImg = myImg.copy()
264 | self.encode_enc(newImg, data)
265 | my_file = BytesIO()
266 | temp=os.path.splitext(os.path.basename(myImg.filename))[0]
267 | newImg.save(tkinter.filedialog.asksaveasfilename(initialfile=temp,filetypes =
268 | ([('png', '*.png')]),defaultextension=".png"))
269 | self.d_image_size = my_file.tell()
270 | self.d_image_w,self.d_image_h = newImg.size
271 | messagebox.showinfo("Success","Encoding Successful\nFile is saved as
272 | Image_with_hiddentext.png in the same directory")
273 | 
274 | def frame_3(self,frame):
275 | frame.destroy()
276 | self.main(root)
277 | 
278 | #GUI loop
279 | root = Tk()
280 | o = IMG_Stegno()
281 | o.main(root)
282 | 
283 | 
284 | 
285 | root.mainloop()
286 | 


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