|Subject:||passphrase is a hexstring, not an ascii string|
The passphrase is described as "The passphrase is an ASCII character string of up to 48 characters" This is incorrect. The passphrase is a string of hex up to 48 characters long (creating 192 bits of information). The passphrase is padded with spaces (i.e. hex 0) to make it up to that length. A (bad!) example passphrase would be "0123456789abcdef0123456789abcdef0123456789abcdef" This can be most easily fixed by changing the documentation.