from Crypto.Cipher import AES
encryptor = AES.new(key, AES_MODE, IV)
* AES, advanced Encryption Standard, it is very fast and secure, it's the 'de facto' (in effect/in fact) standard of symmetric encription; it has a fixed block size of 16 bytes, its keys can be 128, 192, or 256 bits long.
* key, a byte string, the secret key to use in the symmetric cipher, it must be 16(AES-128),24(AES-192), or 32(AES-256) bytes long.
* MODE_constant: the chaining mode to use for encryption or decryption.
AED.MODE_s:
MODE_CBC =2:
Cipher-Block Chainning.
MODE_CFB = 3:
Cipher FeedBack
MODE_ECB = 1:
Electronic Code Book
MODE_OFB = 5:
Output FeedBack
MODE_OPENPGP = 7.
IV: the initialization Vector to use for encryption or decryption, it's a byte string.
1. it's ignored for MODE_ECB and MODE_CTR.
2. it's mandatory for MODE_OPENPGP
3. for other modes, it must be block_size long, and if it not present, then a given default value of all are zeros are used.
As an example, encryption can be done as follows:
from Crypto.Cipher import AES
from Crypto import Random
>>>key = b'Sixteen byte key'
>>>iv = Random.new().read(AES.block_size)
>>>cipher = AES.new(key, AES.MODE_CFB, iv)
>>>msg = iv + cipher.encrypt(b'Attack at dawn')
Doc Link: Crypto.Cipher.AES-module
