# secrets

 Pay Notebook Creator: Salah Ahmed 0 Set Container: Numerical CPU with TINY Memory for 10 Minutes 0 Total 0

# Encrypt Messages¶

Steps:

1. give your lover a secret message string
2. enter your secret key, along with message to encrypt
3. get ciphertext
5. run away together

thanks to Piotr Dabkowski and Karin

In [1]:
# Crosscompute

secret_key = 'secret key'
target_text_path= 'm.txt'
encrypt_or_decrypt_select = '''
encrypt

encrypt
decrypt'''
target_folder = '.'

In [10]:
encrypt_or_decrypt = [x.strip() for x in
encrypt_or_decrypt_select.split('\n') if x.strip()][0]

In [6]:
l = len(secret_key)
filler = '@'
accepted_lengths = sorted([16, 24, 32])
for byte_length in accepted_lengths:
if l < byte_length:
secret_key += (filler * (byte_length - l))
break
else:
secret_key = secret_key[:32]

In [7]:
from Crypto.Cipher import AES

def encrypt(k, m):
aes = AES.new(k, AES.MODE_CFB, 'This is an IV456')
return aes.encrypt(m)

def decrypt(k, ciphertext):
aes = AES.new(k, AES.MODE_CFB, 'This is an IV456')
return aes.decrypt(ciphertext)

In [8]:
from ast import literal_eval

with open(target_text_path, 'r', encoding='utf-8') as f:
if encrypt_or_decrypt == 'decrypt':
target_text = literal_eval("b'{}'".format(source))
print('plain text = %s' % decrypt(secret_key, target_text))
else:
print('ciphertext = %s' % encrypt(secret_key, target_text))

ciphertext = b'\xb3\xfd\xb3J"\x81\x9a \xef\x1eR\xc9\x12\xe7Km\xeb5\xcd27\xe5\x0f'
`