def Decrypt_File(filename,keyFile):
try:
DecryptionFile = open(filename, 'r')
except IOError:
raise IOError
#keyFile = pickle.load(DecryptionFile)
key = Core.convert_block(keyFile)
msg = pickle.load(DecryptionFile)
IVFile = msg[0:BLOCK_SIZE]
line = msg[BLOCK_SIZE:]
IV = Core.convert_block(list(IVFile))
DecryptedText = Core.remove_nulls(Decrypt_all_blocks(line, key, IV))
DecryptionFile = open(filename, 'wb')
DecryptionFile.write((DecryptedText+"\n"))
DecryptionFile.close()
def TextButton(self,choice):
global key, IV, EncryptedText
self.entry2.delete(1.0, END)
if (choice == 1):
self.keyEntry.delete(0, 'end')
message = self.entry1.get(1.0, END)
key = Core.keyGenerator()
IV, EncryptedText = Encrypt.Encrypt_all_blocks(message, key)
msg = ''
keyString = ''
for x in key:
keyString += chr(x)
self.keyEntry.insert(0, keyString)
IVString = ''
for x in IV:
IVString += chr(x)
msg += IVString
msg += EncryptedText
self.label2.configure(text="Encrypted Text :")
self.entry2.insert(1.0, msg)
self.status.configure(text="Encryption complete.", bg='light green')
else:
msg = self.entry1.get("1.0", 'end-1c')
keyString = self.keyEntry.get()
keyList = []
if len(keyString)!=BLOCK_SIZE:
self.status.configure(text="Key Length Error.",bg='orange')
return
for x in range(0, BLOCK_SIZE):
keyList.append(ord(keyString[x]))
IVList = []
for x in range(0, BLOCK_SIZE):
IVList.append(ord(msg[x]))
EncryptedTextActual = msg[BLOCK_SIZE:]
DecryptedText = Core.remove_nulls(Decrypt.Decrypt_all_blocks(EncryptedTextActual, keyList, IVList))
self.label2.configure(text="Decrypted Text :")
self.entry2.insert(1.0, DecryptedText)
self.status.configure(text="Decryption complete.", bg='light green')
