NAME
	file2key - generates a key from a file and a passphrase

SYNOPSIS
	file2key [file]

DESCRIPTION
	file2key uses Keccak[] to create a hash as big as the
	selected file and then prints the bitwise exclusive OR
	of the hash and the file, making a key file from any
	normal file and a passphrase.

	The idea is the reverse of steganography.

	file2key can also be used to encrypt and decrypt files.

RATIONALE
	file2key cannot be configured. The idea behind this is
	that if it required configuration you would run the risk
	of losing all your keys if you lost your configuration.
	This must not happen.