Random padding doesnt work

[imanmousaei]

Accroding to README, Add dd prefix to secret (cafe...babe => ddcafe...babe) to enable this mode on client side. But when I add "dd", it give me this error:

'S' option requires exactly 32 hex digits

Also, it would be user-friendlier if random padding was specified with another flag.

[xTudoS]

Try delete two char from your secret

E.g:

my..secret ddmy..secr