将 Base64 编码字节转换为 Int

Question

So basically, I generate 16 random bytes and i then convert them to Base64. I need to transform this Base64 to an Int. I've searched all over the internet, i found out how to convert to hex, and many other but none seem to work. This is the code I use to generate the nonce:

import base64
nonce = base64.encodebytes(os.urandom(16))

I need a function a bit like the parseInt() in JavaScript. The result need to be between -9223372036854775808 and 9223372036854775807.

Answer 1

There is a builtin method to convert bytes to int:

int.from_bytes(nonce, "big")  # big endian
int.from_bytes(nonce, "little")  # little endian

Python docs: https://docs.python.org/3/library/stdtypes.html#int.from_bytes