def fileCipher(fileName, outputFileName, key = 3, shift_type = 'right', decrypt=False): with open(fileName, 'r') as f_in: with open(outputFileName, 'w') as f_out: # iterate over each line in input file for line in f_in: #encrypt/decrypt the line lineNew = cipher_cipher_using_lookup(line, key, decrypt=decrypt, shift_type=shift_type) #write the new line to output file f_out.write(lineNew) print('The … once for each piece of plaintext). The function used to decrypt cipher text is as follows − def decrypt(ciphertext, priv_key): cipher = PKCS1_OAEP.new(priv_key) return crypt(ciphertext) For public key cryptography or asymmetric key cryptography, it is important to maintain two important features namely Authentication and Authorization.
Question: The Ciphertext Below Was Encrypted Using A Substitution Cipher.
