Unable to obtain the same sha256 hash in python and javascript

I am following the steps to call a PSD2 endpoint, base64 code the message, then get SHA256 to obtain the Hash from it and get the base64 of the hash. I am using the same values of the examples to check if I am doing it right. They also provide a website with a js library to check the result.

https://i.sstatic.net/aBL9U.jpg

Input:

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

Expected Output:

pfHPQFso5E7SlQfg9kSVhZuod4k9KnFFEtFs472L5WI=

What I am doing:

import base64
import hashlib


# get_input returns the input base64 in bytes
result = base64.b64encode(hashlib.sha256(get_input()).digest())

In that case, the result is:

b'JRtx3taNOfx00oj2xuyoAxocxfJnL/wEXLYf9+t9jCk='

Instead of the expected result.

This result is the same as the result in that JS page changing the input type from base64 to text, so I assume the input is correct. But with hashlib there are not input type options. So my question is: What I have to do to get the expected output with that input in python?

Solution

The website is decoding the input string from base64, hashing it, and then encoding the hash as base64.

>>> s = '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'
>>> decoded = base64.b64decode(s)
>>> hash_ = hashlib.sha256(decoded)
>>> r = base64.b64encode(hash_.digest())
>>> r.decode()
'pfHPQFso5E7SlQfg9kSVhZuod4k9KnFFEtFs472L5WI='