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python fsb795 leading serial number zero

A
Amritpal last edited by
Hello, everyone. I work with skilled certificate files, one of the tasks is to get a serial number. Certificates are available, starting from 0

When I determine the serial number with a python, I lose the lead zero.
```
cert = fsb795.Certificate(filename)
if (cert.pyver == ''):
    exit(-1)
print( '{0:x}'.format(cert.serialNumber()) )
```
cert.serialNumber() : 244779530423518144939779859097793331
Programme withdrawal: 1d76da04fd9aea00000033603e80002
Must be: 01d76da04fd9aea00000033603e80002
Reply Quote 0
1 Reply Last reply

baileigh

Let's move the bikes to the number:

s=int.from_bytes(bytes.fromhex('01d76da04fd9aea00000033603e80002'),'big')
s.bit_length()

24477953042351849397798590977933314 long 121 battles, rounded in whites:

import math

math.ceil(s.bit_length()/8)

16 Byte. We're moving back to HEX.

s.to_bytes(math.ceil(s.bit_length()/8),'big').hex()
'01d76da04fd9aea00000033603e80002'

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Remember that all these operations, if desired, can be replaced by conventional arithmetics. We'll take your example with six Bytes. Six byte is 48. 2^48 = 281474976710656. So we're gonna need a balance of 281474976710656. Same with four whites from the middle. A change to the right can emulate the difference. I mean:right48bits = x % 281474976710656; middle32bits = right48bits / 65536; // сдвигаем вправо на 16 бит, разделив на 2^16
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To ask about the subject of the vote, and how to do it, is enough for your question to be closed, because it is initially based on opinions, and it is also a topic too broad, now, to solve the only problem I see of code you have is the following:You have this line:<form action="{{% url 'New:vote' %} new.id" method="POST"> Which, incoming, you have a { after the action=" and you must know that the arguments to the urls from the tag {% url ... %} they go inside the tag, so that line should be like this:<form action="{% url 'New:vote' new.id %}" method="POST"> I hope I helped you with your question, I can only solve that mistake because helping you with the other is making a whole backend to make a voting system.

python fsb795 leading serial number zero

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