eIndex

Metadata

is "data about data", basiclly can be considered as infomation. see http://www.linfo.org/metadata.html

Bit is short for Binary digit

Unicode

(which attempts to provide a unique encoding for every character used by the world's languages).

http://en.wikipedia.org/wiki/Character_encoding Common examples of character encoding systems include Morse code, the Baudot code, the American Standard Code for Information Interchange (ASCII) and Unicode.

ASCII) was introduced in 1963 and is a 7-bit encoding scheme

UTF-8

(8-bit UCS/Unicode Transformation Format)

sack

a big bag

e.g

rpmsack.py

Ethics

(also known as moral philosophy)

A digital signature

is reminiscent of an ordinary signature; they both have the characteristic that they are easy for a user to produce, but difficult for anyone else to forge.

hybrid

is the combination of two or more different things, aimed at achieving a particular objective or goal.

passphrase

Finally you have to enter a password (actually passphrase would be more appropriate, since blanks are allowed).