Assignment #2 - 6 points - deadline April 8, 23:59
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Here's the second assignment - on GPG/PGP, a very easy piece of work for
those familiar with PGP, but also quite easy for everyone else. :-)

A basic reading (in Czech) can be found at 
http://www.gpg.cz/~rp/GnuPG/EurOpen/openpgp20020405.pdf

And at aisa you can just start with "gpg -h" or "pgp -h" and 
your knowledge from PV017 and PV018 so far...

When generating a key, please bear on your mind that a keylength of
at least 1024 bits is highly recommended. Also, please consider whether
you want to generate keys for different security levels (types
of use) and bind them together by signing. A bit of reading on this is at
http://www.fi.muni.cz/usr/matyas/lecture/bvsk43.doc (a very old article in Czech!).


QQQ2:
=====  6 points, deadline April 8, 23:59

2.1  What symmetric block ciphers are used in PGP v5.0 and higher? (1 point)

2.2  Characterize one of these algorithms (except DES). I.e., keylenght(s),
blocksize, operations used, etc. 				(1 point)

2.3  Find out my PGP key with the following fingerprint:
      C3 CB 4E FD 9E DE F0 CA  65 D5 BF 7C 46 8F 7B 5C      	(1 point)

2.4  Export then your key in ASCII and let me know (according to the way you
deliver it to me :-) what level of trust can I have in such a key and how could
you possibly improve this trust level.            		(2 points)

2.5 The whole text (2.1, 2.2 a 2.4) shall be then sent encrypted with my key
found in 2.3, signed with your key, and posted as your solutions to this
assignment on the IS.						(1 point)

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