# First Program to Encrypt Text File
# Dictionary to assign codes to each letter of the alphabet
codes = {
'A': '%', 'a': '9',
'B': '@', 'b': '#',
'C': '&', 'c': '3',
'D': '$', 'd': '7',
'E': '!', 'e': '5',
'F': '^', 'f': '2',
'G': '*', 'g': '8',
'H': '?', 'h': '4',
'I': '+', 'i': '6',
'J': '-', 'j': '1',
'K': '=', 'k': '0',
'L': '_', 'l': '!',
'M': '~', 'm': '?',
'N': ']', 'n': '[',
'O': '{', 'o': '}',
'P': '|', 'p': '/',
'Q': '\\', 'q': '<',
'R': '>', 'r': '.',
'S': ',', 's': '&',
'T': ';', 't': ':',
'U': '"', 'u': "'",
'V': '`', 'v': '~',
'W': '(', 'w': ')',
'X': ']', 'x': '[',
'Y': '{', 'y': '}',
'Z': '|', 'z': '/'
}
def encrypt_file(input_file, output_file):
with open(input_file, 'r') as file:
text = file.read()
encrypted_text = ''
for char in text:
if char in codes:
encrypted_text += codes[char]
else:
encrypted_text += char
with open(output_file, 'w') as file:
file.write(encrypted_text)
# Encrypting a text file
encrypt_file('input.txt', 'encrypted_output.txt')
# Second Program to Decrypt Encrypted File
def decrypt_file(input_file):
with open(input_file, 'r') as file:
encrypted_text = file.read()
decrypted_text = ''
for char in encrypted_text:
for key, value in codes.items():
if char == value:
decrypted_text += key
break
else:
decrypted_text += char
print(decrypted_text)
# Decrypting the encrypted file and displaying the decrypted contents
decrypt_file('encrypted_output.txt')