551838 (2) [Avatar] Offline
#1
running this line of code:

head -c 32 /dev/urandom | tr '\n' = > key.bin

Gets me:

tr: Illegal byte sequence

Running = hexdump key.bin

Gets me : a small set of numbers not 18-19 sets like the demo
JJ Geewax (21) [Avatar] Offline
#2
Hm, can you double check that the quotation marks are correct in your copy/pasting?

I just gave this another go and it worked fine for me:

$ cat /etc/issue
Debian GNU/Linux buster/sid \n \l
$ head -c 32 /dev/urandom | tr '\n' = > key.bin
$ hexdump key.bin
0000000 f90f f42e 2420 9305 46f0 cc51 b3e0 8727
0000010 b1d6 9db1 d4a6 d37d 34cc bae7 aa01 5438
0000020