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'
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'
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("")
The hex codec has been chucked in 3.x. Use binascii instead:
>>> binascii.hexlify(b'hello')
b'68656c6c6f'
In Python 3.5+, encode the string to bytes and use the hex() method, returning a string.
s = "hello".encode("utf-8").hex()
s
# '68656c6c6f'
Optionally convert the string back to bytes:
b = bytes(s, "utf-8")
b
# b'68656c6c6f'
python - How to encode hex in Python3? - Stack Overflow
String to HEX
How to convert character to hexadecimal and back?
python - Python3 - How to convert a string to hex - Stack Overflow
You need to go via the codecs module and the hex_codec codec (or its hex alias if available*):
codecs.encode(b'\x12', 'hex_codec')
* From the documentation: "Changed in version 3.4: Restoration of the aliases for the binary transforms".
Yet another way using binascii.hexlify():
>>> import binascii
>>> binascii.hexlify(b'\x12\x34\x56\x78')
b'12345678'
I am wanting to take a normal string, "My water bottle is blue" for example, and converting that into the HEX representation of how it would be stored in a txt file. I've tried .encode, binascii.hexlify, and a few other things. Any help would be appreciated.
In python 3x Use binascii instead of hex:
>>> import binascii
>>> binascii.hexlify(b'< character / string>')
To print:
for c in test:
print(hex(ord(c)))
To convert:
output = ''.join(hex(ord(c)) for c in test)
or without the '0x' in output:
output = ''.join(hex(ord(c))[2:] for c in test)
Something like:
>>> bytes.fromhex('4a4b4c').decode('utf-8')
'JKL'
Just put the actual encoding you are using.
import codecs
decode_hex = codecs.getdecoder("hex_codec")
# for an array
msgs = [decode_hex(msg)[0] for msg in msgs]
# for a string
string = decode_hex(string)[0]
Since Python 3.5 this is finally no longer awkward:
>>> b'\xde\xad\xbe\xef'.hex()
'deadbeef'
and reverse:
>>> bytes.fromhex('deadbeef')
b'\xde\xad\xbe\xef'
works also with the mutable bytearray type.
Reference: https://docs.python.org/3/library/stdtypes.html#bytes.hex
Use the binascii module:
>>> import binascii
>>> binascii.hexlify('foo'.encode('utf8'))
b'666f6f'
>>> binascii.unhexlify(_).decode('utf8')
'foo'
See this answer: Python 3 string to hex