Encoding and decoding in Python
Encoding and decoding values can get complicated.
This pattern code would possibly show you how to out. I named the variables to indicate whether or not they had been encoded (bytes) or decoded (a string) or base64 encoded or decoded.
import base64worth="Decoded string worth"value_encode = worth.encode('utf-8')
value_base64encode = base64.b64encode(value_encode)
value_decode = value_base64encode.decode('utf-8')print(value_decode)value_encode = value_decode.encode('utf-8')
value_base64decode = base64.b64decode(value_encode)
value_decode = value_base64decode.decode('utf-8')print(value_decode)
Typically you encode values in order that they don’t unintentionally get processed incorrectly. For instance when you have code in a worth and also you don’t need it to mess up parsing and processing, you would possibly encode it to forestall sure particular characters from being interpreted as code or breaking one thing.
Encoding values correctly might help cease some safety issues the place attackers attempt to inject code into course of to take malicious actions.
Attackers additionally might encode values to bypass safety instruments that examine knowledge.
At any charge, if you wish to base64 encode a worth you first must translate into bytes, then encode it. Then decode it to show it again right into a string that you could cross into features that anticipate a string.
Whenever you need to decode the base64 encoded worth, flip it again into bytes, then base64 decode it, then convert it again to a string.
There are several types of encoding and decoding like ASCII or UTF-8 — so you’ll want to perceive what character set it is advisable to help or work with to make use of the correct encoding and decoding.
One of many challenges is whenever you don’t understand how one thing was encoded within the first place and it’s important to decode it. You’ll most likely need to consult with the supply code or the documentation to ensure you decode it appropriately.
Teri Radichel
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