Home/ Questions/Ways to resolve the error - attributeerror: 'bytes' object has no attribute 'encode'
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Shia Singh
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Asked: 2022-05-18T20:48:46+00:00 In:

Ways to resolve the error – attributeerror: ‘bytes’ object has no attribute ‘encode’

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Here is the program I run:

<ipython-input-53-e9f33b00348a> in aesEncrypt(text, secKey)
  43 def aesEncrypt(text, secKey):
  44 pad = 16 - len(text) % 16
 ---> 45 text = text.encode("utf-8") + (pad * chr(pad)).encode("utf-8")
  46 encryptor = AES.new(secKey, 2, '0102030405060708')
  47 ciphertext = encryptor.encrypt(text)
<ipython-input-65-9e84e1f3dd26> in aesEncrypt(text, secKey)
  43 def aesEncrypt(text, secKey):
  44 pad = 16 - len(text) % 16
 ---> 45 text = text.encode("utf-8") + (pad * chr(pad))
  46 encryptor = AES.new(secKey, 2, '0102030405060708')
  47 ciphertext = encryptor.encrypt(text)
text = { 'username': '', 'password': '', 'rememberLogin': 'true' }
 text=json.dumps(text)
 print(text)
 pad = 16 - len(text) % 16 
 print(type(text))
 text = text + pad * chr(pad) 
 print(type(pad * chr(pad)))
 print(type(text))
 text = text.encode("utf-8") + (pad * chr(pad)).encode("utf-8") 
 print(type(text))
 
 {"username": "", "password": "", "rememberLogin": "true"}
 <class 'str'>
 <class 'str'>
 <class 'str'>
 <class 'bytes'>

After I run, it returns an error:

AttributeError:'bytes' object has no attribute 'encode'
TypeError: can't concat str to bytes

Does anyone have any suggestions for the problem below: attributeerror: ‘bytes’ object has no attribute ‘encode’ in the python – How to correct it?

bytes object has no attribute encode
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2 Answers

  1. Best Answer
    Expert

    The cause: We can see that (pad * chr(pad))is bytes while issue in aesEncrypt(text, secKey). It was called twice, the first time using text as the str parameter and the second time using the bytes parameter. This is the reason.

    Solution: To solve the error attributeerror: ‘bytes’ object has no attribute ‘encode’, the pad portion needs to be converted from unicode to bytes.

    text = text + (pad * chr(pad)).encode("utf-8")

    You might selectively encrypt text prior concatenating with pad to be additional safe.

    if not isinstance(text, bytes):
 text = text.encode('utf-8')
    • 0

  2. Thank you to @Todd for solving the problem. (pad * chr(pad))is bytes, while aesEncrypt(text, secKey) is the solution. It was called twice, once with text str and again bytes.

    You can solve this problem by ensuring that your input text type is str.

    • 13

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