def encrypt(self, msg):
e_start_ts = time.time()
start_timestamp = round(time.time(), 5)
print('Start timestamp at encryption:', start_timestamp, 's')
algo1 = Twofish(self.sk.encode('utf-8'))
encrypt_msg1 = algo1.encrypt(msg.encode('utf-8'))
algo2 = Rijndael(self.sk, self.block_size)
encrypt_msg2 = algo2.encrypt(encrypt_msg1 +
str(start_timestamp).encode('utf-8'))
print('\nSize of encrypt1:', len(encrypt_msg1), 'bytes')
print('Size of encrypt2:', len(encrypt_msg2), 'bytes')
e_end_ts = time.time()
print('Time taken for encrypt():', (e_end_ts - e_start_ts) * 10**3,
'ms')
return encrypt_msg2
def decrypt(self, msg):
d_start_ts = time.time()
end_timestamp = round(time.time(), 5)
print('End timestamp at decryption:', end_timestamp, 's')
algo2 = Rijndael(self.sk, self.block_size)
decrypt_msg2 = algo2.decrypt(msg)
algo1 = Twofish(self.sk.encode('utf-8'))
decrypt_msg1 = algo1.decrypt(decrypt_msg2[:16])
print('\nSize of decrypt2:', len(decrypt_msg2), 'bytes')
print('Size of decrypt1:', len(decrypt_msg1), 'bytes')
start_timestamp = float((decrypt_msg2[16:]).decode('utf-8'))
print('Start timestamp extracted at decryption:', start_timestamp, 's')
diff_timestamp = end_timestamp - start_timestamp
d_end_ts = time.time()
print('Time taken for decrypt():', (d_end_ts - d_start_ts) * 10**3,
'ms')
return decrypt_msg1.decode('utf-8'), diff_timestamp
