This function returns random bytes from an OS-specific randomness source. The returned data should be unpredictable enough for cryptographic applications, though its exact quality depends on the OS implementation. On a UNIX-like system this will query /dev/urandom, and on Windows it will use CryptGenRandom(). If a randomness source is not found, NotImplementedError will be raised.
是的。这是正确的。base64只对字符串进行编码。你知道吗
根据文件:
根据documentation:,它对于加密应用程序来说应该是不可预测的
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