├── vigenere.jpg
└── vigenere_decipher.py


/vigenere.jpg:
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https://raw.githubusercontent.com/zdnahom/Vigenere-decryption/master/vigenere.jpg


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/vigenere_decipher.py:
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 1 | import tkinter as tk 
 2 | import tkinter.font as tkFont
 3 | from PIL import ImageTk, Image  
 4 | 
 5 | capital_alphabet='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
 6 | letter_to_index=dict(zip(capital_alphabet,range(len(capital_alphabet))))
 7 | # print(letter_to_index)
 8 | index_to_letter=dict(zip(range(len(capital_alphabet)),capital_alphabet))
 9 | # print(index_to_letter)
10 | 
11 | root=tk.Tk()
12 | # root.geometry("500x500")
13 | root.configure(bg="white")
14 | logo=Image.open('vigenere.jpg')
15 | logo=ImageTk.PhotoImage(logo)
16 | image_lable=tk.Label(image=logo)
17 | image_lable.image=logo
18 | image_lable.pack()
19 | Desired_font = tk.font.Font( family = "Comic Sans MS", 
20 |                                  size = 20, 
21 |                                  weight = "bold")
22 | Desired_font2 = tk.font.Font( family = "Comic Sans MS", 
23 |                                  size = 10, 
24 |                                  weight = "bold")
25 | title1=tk.Label(root,text='Cipher',font=Desired_font,bg="white")
26 | title1.pack()
27 | cipher=tk.Entry(root,width=50,borderwidth=5)
28 | cipher.pack()
29 | title2=tk.Label(root,text='Key',font=Desired_font,bg="white")
30 | title2.pack()
31 | key=tk.Entry(root, width=50,borderwidth=5)
32 | key.pack()
33 | def decrypt(cipher,key):
34 |     decrypted_message=''
35 |     splited_cipher=[cipher[i:i + len(key)]for i in range(0,len(cipher),len(key))]
36 |     for each_splited_cipher in splited_cipher:
37 |         i=0
38 |         for letter in each_splited_cipher:
39 |             number=(letter_to_index[letter]-letter_to_index[key[i]])%len(capital_alphabet)
40 |             decrypted_message+=index_to_letter[number]
41 |             i+=1
42 |     return decrypted_message
43 | def vigenere_decipher():
44 |     c=cipher.get().upper()
45 |     k=  key.get().upper()
46 |     d=decrypt(c,k)
47 |     output=tk.Label(root,text=d ,font=Desired_font2)
48 |     output.pack()
49 | 
50 | mybutton=tk.Button(root,text="Decipher",bg="#20bebe",fg="white",height="2",width="15",command=vigenere_decipher,borderwidth=5)
51 | mybutton.pack()
52 | root.mainloop()
53 | 
54 | # def encrypt(message,key):
55 | #     encrypted=''
56 | #     split_message=[message[i:i + len(key)]for i in range(0,len(message),len(key))]
57 | #     for each_split in split_message:
58 | #         i=0
59 | #         for letter in each_split:
60 | #             number=(letter_to_index[letter]+letter_to_index[key[i]])%len(capital_alphabet)
61 | #             encrypted+=index_to_letter[number]
62 | #             i+=1
63 | #     return encrypted


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