Python: binascii.a2b_hex gives “Odd-length string”

Question

I have a hex value that I\'m grabbing from a text file, then I\'m passing it to a2b_hex to convert it to the proper binary representation. Here is what I have:

Answer 1

read() doesn't strip newlines. If there's a '\n' at the end of your file, it'll be in k1.

Try binascii.a2b_hex(k1.strip()) or possibly binascii.a2b_hex(k1[:8]).