Tag Archives: utf-8

Crypto JS decrypts malformed UTF-8 data

When using crypto JS to decrypt, an error may be reported:

Malformed UTF-8 data
Error: Malformed UTF-8 data
    at Object.stringify (d:\StudeyCode\myStudy\encryptDemo\routes\encrypt\crypto-js.js:478:27)
    at WordArray.init.toString (d:\StudeyCode\myStudy\encryptDemo\routes\encrypt\crypto-js.js:215:41)
    at decryptByDESModeCBC (d:\StudeyCode\myStudy\encryptDemo\routes\encrypt\crypto.js:90:22)
    at testSign (d:\StudeyCode\myStudy\encryptDemo\routes\test.js:34:18)
    at Layer.handle [as handle_request] (d:\StudeyCode\myStudy\encryptDemo\node_modules\express\lib\router\layer.js:95:5)
    at next (d:\StudeyCode\myStudy\encryptDemo\node_modules\express\lib\router\route.js:137:13)
    at Route.dispatch (d:\StudeyCode\myStudy\encryptDemo\node_modules\express\lib\router\route.js:112:3)
    at Layer.handle [as handle_request] (d:\StudeyCode\myStudy\encryptDemo\node_modules\express\lib\router\layer.js:95:5)
    at d:\StudeyCode\myStudy\encryptDemo\node_modules\express\lib\router\index.js:281:22
    at Function.process_params (d:\StudeyCode\myStudy\encryptDemo\node_modules\express\lib\router\index.js:335:12)

The reason for the error is: when des decrypts, if the encrypted data is not an integral multiple of 8, the above error will be reported,
solution: encrypt the data, and then encrypt it with Base64. When decrypting, first decrypt it with Base64, and then decrypt it with DES. The above problems can be solved.

Solve Python error Unicode error ‘UTF-8’

The complete error message is shown below:

Not to read the error principle, but the solution is as follows:
Open the error file (pcacode.py in this case) using Notepad ++ (which is the editor I always use), find the encoding option in the menu bar, select UTF-8, save it, and run the Python code again so it doesn’t report any errors.

Another solution, which I haven’t tried, is the following:

import codecs
codecs.open('filename',encoding='uft-8')

Solution of Unicode decodeerror -‘utf-8 ‘codec can’t decode byte 0xc4 in position 0 – invalid continuation byte

Reading CSV document with Pandas is an error that cannot be read because there is Chinese in the document. The error is due to the failure of the 'utf-8' codec to decode the 0 bit byte 0xc4

Solutions:
After reading the file, add encoding=’ GBK ‘,
such as: pddata=pd. Read_csv (' felipe.csv ',encoding=' GBK ')

Interested to continue to see the reason!
As you know, the default encoding we use in Python is UTF-8. For an introduction to coding, I recommend taking a look at Liao Da’s Python tutorial, “Strings and Coding.” Since UTF-8 format cannot correctly read CSV files with Chinese characters, it would be a good idea to select a format that can read Chinese characters.
So what format can read Chinese characters?We open the Python3 official website: find the section on standard characters. The diagram below:

So what format do you want to change?You can see that the third column of the table, Language, represents what Language the encoding supports. So let’s find out.
!
I’m not going to show you the table here, but if you’re interested, go to the website. Anyway, under my careful search, there is big5; Big5hkscs; Gb2312; GBK; Gb18030. Hz; The five formats iso2022_jp_2 may support Chinese. After my test, I found gb2312; GBK; Gb18030 can read CSV files with Chinese smoothly. (Since all three are ok, let’s have a good GBK.)

It works!