07-12-2016, 01:21 PM
Please use --keyspace. You will find out that the use of --keyspace is not allowed in combination with -i, which is required to tell hashcat to increase the mask-length with each iteration by one. So this is not black magic. You can do the same from outside which means for testing the length 1-4 you will call hashcat 4 times, but then you know the keyspace.