Has HEX codec been excluded from Python 3.3? When I write the code
>>> s="Hallo"
>>> s.encode('hex')
Traceback (most recent call last):
File "<pyshell#24>", line 1, in <module>
s.encode('hex')
LookupError: unknown encoding: hex
What does that mean? I know about binascii.hexlify() but still .encode() method is nice!
Any suggestion?
No, using encode() to hexlify isn't nice.
The way you use the hex codec worked in Python 2 because you can call encode() on 8-bit strings in Python 2, ie you can encode something that is already encoded. That doesn't make sense. encode() is for encoding Unicode strings into 8-bit strings, not for encoding 8-bit strings as 8-bit strings.
In Python 3 you can't call encode() on 8-bit strings anymore, so the hex codec became pointless and was removed.
Although you theoretically could have a hex codec and use it like this:
>>> import codecs
>>> hexlify = codecs.getencoder('hex')
>>> hexlify(b'Blaah')[0]
b'426c616168'
Using binascii is easier and nicer:
>>> import binascii
>>> binascii.hexlify(b'Blaah')
b'426c616168'
bytes first.
this is the same answer for the above but i modified it so it works with python 3.
import binascii
from Crypto.Cipher import AES
from Crypto import Random
def encrypt(passwrd, message):
msglist = []
key = bytes(passwrd, "utf-8")
iv = Random.new().read(AES.block_size)
cipher = AES.new(key, AES.MODE_CFB, iv)
msg = iv + cipher.encrypt(bytes(message, "utf-8"))
msg = binascii.hexlify(msg)
for letter in str(msg):
msglist.append(letter)
msglist.remove("b")
msglist.remove("'")
msglist.remove("'")
for letter in msglist:
print(letter, end="")
print("")
def decrypt(passwrd, message):
msglist = []
key = bytes(passwrd, "utf-8")
iv = Random.new().read(AES.block_size)
cipher = AES.new(key, AES.MODE_CFB, iv)
msg = cipher.decrypt(binascii.unhexlify(bytes(message, "utf-8")))[len(iv):]
for letter in str(msg):
msglist.append(letter)
msglist.remove("b")
msglist.remove("'")
msglist.remove("'")
for letter in msglist:
print(letter, end="")
print("")
regebro's answer is right but if you need to define a variable this code may help.C is a str here.
import codecs
c='sdfds'
print(codecs.encode(c))
hex(n).