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https://github.com/hastagAB/Awesome-Python-Scripts.git
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80 lines
2.1 KiB
Python
80 lines
2.1 KiB
Python
alph = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
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#actuall stuff
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def decryption(key, text):
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key_len = len(key)
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count = 0
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#adjusting the key
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real_key = ''
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#fixing spaces
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for i in text:
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if i != ' ':
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if count == len(key):
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count = 0
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real_key += key[count]
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count += 1
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else:
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real_key += ' '
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#print(real_key)
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encr = ''
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#decrypting
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for c in range(0,len(text)):
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if text[c] == ' ':
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encr += ' '
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elif ((ord(text[c]) >= 48) and (ord(text[c]) <= 57)):
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encr += text[c]
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else:
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encr += (alph[(ord(text[c]) - ord(real_key[c])) % 26])
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return encr
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def encryption(key, text):
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key_len = len(key)
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count = 0
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#adjusting the key
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real_key = ''
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#fixing spaces
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for i in text:
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if i != ' ':
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if count == len(key):
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count = 0
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real_key += key[count]
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count += 1
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else:
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real_key += ' '
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#print(real_key)
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encr = ''
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#encrypting
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for c in range(0,len(text)):
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if text[c] == ' ':
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encr += ' '
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elif ((ord(text[c]) >= 48) and (ord(text[c]) <= 57)):
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encr += text[c]
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else:
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encr += (alph[(ord(real_key[c]) + ord(text[c])) % 26])
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return encr
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#user input
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def main():
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boolean = True
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while(boolean):
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try:
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mode = input('Do you want to encrypt or to decrypt [e/d]? ')
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if mode.upper().startswith('E'):
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text = input('Please enter the text: ').upper()
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key = input('Please enter the key: ').upper()
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print(encryption(key, text))
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boolean = False
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elif mode.upper().startswith('D'):
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text = input('Please enter the text: ').upper()
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key = input('Please enter the key: ').upper()
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print(decryption(key, text))
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boolean = False
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else:
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print('Please enter a valid choice')
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except KeyboardInterrupt:
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exit()
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if __name__ == '__main__':
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main()
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