Crypto another two pieces of encrypted decryption code

The first piece of code style-straightforward:

Import sysfrom crypto.cipher import aesfrom binascii import B2a_hex, A2b_hexclass Prpcrypt (): Def __init__ (self, key): Self.key = key Self.mode = AES. MODE_CBC # encryption function, if text is not a multiple of 16 "encrypted text must be a multiple of 16!" ", that would be a multiple of 16 def encrypt (self, text): Cryptor = Aes.new (Self.key, Self.mode, Self.key) # Here the key must be 16 long ( AES-128), (AES-192), or (AES-256) Bytes length. The current AES-128 is sufficient with length = Count = Len (text) add = Length-( Count% length) Text = text + (b ' + ' * add) Self.ciphertext = Cryptor.encrypt (text) # Because of the string that gets when AES encrypts Not necessarily the ASCII character set, the output to the terminal or the storage may be problematic # So here's a uniform conversion of the encrypted string into a 16 binary string return B2a_hex (self.ciphertext) # decryption, remove the top-up space with Strip () Remove Def decrypt (self, text): Cryptor = Aes.new (Self.key, Self.mode, self.key) Plain_text = Cryptor . Decrypt (A2b_hex (text)). Decode () return Plain_text.rstrip (' + ') if __name__ = = ' __main__ ': PC = Prpcrypt (b ' Keyske Yskeyskeys ') # Initialize key E = Pc.encrypt (b "qweqweqweQwe ") d = Pc.decrypt (e) print (E, d,type (d), Len (d)) E = Pc.encrypt (b" ADASDQWEASDADQWEASD ") d = Pc.decrypt (e) Print (E, d,type (d), Len (d))

the second paragraph-or straightforward:

From Crypto.cipher import aesfrom Crypto import randomfrom binascii import b2a_hex# to encrypt clear text data = ' East of West ' # key must be a length of (AES -128), (AES-192), or (AES-256) Bytes length. Key = B ' This is A + key ' # generates a non-repeatable key vector of length equal to the AES block Size IV = RANDOM.NEW (). Read (Aes.block _size) # Initializes the AES object with key and IV using MODE_CFB mode mycipher = Aes.new (Key, AES. MODE_CFB, IV) # Encrypted clear text length must be a multiple of 16, if the length is not a multiple of 16, you need to top up to a multiple of 16 # to add IV (key vector) to the beginning of the encrypted cipher, together transfer ciphertext = IV + MYCIPHER.ENCRYPT ( Data.encode ()) # decrypt the words to generate a new AES object with key and IV Mydecrypt = AES.NEW (Key, AES. MODE_CFB, Ciphertext[:16] # using the newly generated AES object, decrypt the encrypted ciphertext Decrypttext = Mydecrypt.decrypt (ciphertext[16:]) print (' Key k: ', key) Print (' IV is: ', B2a_hex (ciphertext) [: +]) print (' Encrypted data: ', B2a_hex (ciphertext) [[+]]) print (' Decrypted data: ', Decrypttext.decode ())

Crypto another two pieces of encrypted decryption code