如何在python中使用json存储十六进制数据

Question

I am getting this error when storing data in to a file

TypeError: b'\\x1fa\\xec\\xb5\\xed]k\\xaf\\x8dzph\\xb2\\x8d\\xcc\\x8e' is not JSON serializable

This is the code I am using. But it doesn't seem to be giving the right outcome as the file gets corrupted once the data is stored.

    iv = os.urandom (16)
    msg_IV = base64.b64encode(iv)
    padding = u'\u0000'
    file = {"IV": msg_IV,\
        "Padding Character": padding }

    fp = open("local.txt", "w")
    json.dump(file, fp, indent=4)
    fp.close()

This small program is supposed to store encrypted variable information and store in a file.

Answer 1

What you have is a byte string, and there is no standard way to store raw bytes in a JSON object.

You should instead encode the bytes into base64 and store the base64 string in your JSON object:

import base64

b64String = base64.b64encode(myByteString)