lilug/gpg: slideshow.tex annotate

annotate slideshow.tex @ 11:4a04a5a3f451

random

author	Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
date	Sun, 15 Mar 2009 18:44:46 -0400
parents	15fe3974de32
children

rev	line source
0 199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	1 \documentclass[pdf,contemporain,slideColor,colorBG,accumulate,nototal]{prosper}
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	2
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	3 %\usepackage{macros-cp}
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	4
6 32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	5 \title{GPG}
0 199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	6 \subtitle{The government is watching you...}
6 32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	7 \author{Josef ``Jeff'' Sipek $<$jeffpc@josefsipek.net$>$}
0 199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	8 \institution{}
6 32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	9 \slideCaption{GPG -- Josef ``Jeff'' Sipek}
0 199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	10
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	11 \begin{document}
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	12 \maketitle
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	13
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	14 % Intro to public key crypto
2 5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	15 % - what's symmetric cryptography?
0 199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	16 % - caesar cipher example (rot13 variant)
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	17 % - (a) cypher
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	18 % - (b) key
2 5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	19 \overlays{1}{
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	20 \begin{slide}{What is cryptography?}
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	21 \begin{minipage}{\linewidth}
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	22 {\bf Cryptography}, n.
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	23
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	24 \vspace{0.5in}
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	25 The science which studies methods for encoding messages so
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	26 that they can be read only by a person who knows the
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	27 secret information required for decoding, called the key
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	28 \end{minipage}
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	29 \end{slide}}
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	30
3 f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	31 \overlays{7}{
2 5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	32 \begin{slide}{Little History}
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	33 \onlySlide*{1}{
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	34 \begin{center}
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	35 \includegraphics[width=\linewidth]{Roman_empire_395}
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	36 \end{center}}
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	37
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	38 \begin{itemstep}[2]
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	39 \item Caesar cipher
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	40 \item ROT13
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	41 \item Symmetric cipher
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	42 \begin{itemstep}
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	43 \item Key used to encrypt \& decrypt
3 f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	44 \item AES
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	45 \item Blowfish
2 5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	46 \end{itemstep}
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	47 \end{itemstep}
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	48 \end{slide}}
5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	49
3 f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	50 % - problems
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	51 \overlays{1}{
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	52 \begin{slide}{Problems with Symmetric Ciphers}
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	53 \begin{itemstep}
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	54 \item ``Pre-shared secret''
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	55 % FIXME: add more
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	56 \end{itemstep}
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	57 % give postal example
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	58 \end{slide}}
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	59
2 5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	60 % - what's asymmetric crypto?
0 199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	61 % - (a) cypher
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	62 % - (b) 2 keys!
3 f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	63 \overlays{4}{
2 5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	64 \begin{slide}{Asymmetric Ciphers}
3 f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	65 \begin{itemstep}[2]
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	66 \item 2 keys!
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	67 \begin{itemstep}
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	68 \item Public
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	69 \item Private
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	70 \end{itemstep}
6 32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	71 % give postal example
2 5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	72 \end{itemstep}
6 32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	73 \end{slide}}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	74
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	75 \overlays{1}{
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	76 \begin{slide}{Asymmetric Ciphers}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	77 \begin{center}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	78 \includegraphics[width=0.5\linewidth]{Public_key_making}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	79 \end{center}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	80 \end{slide}}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	81
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	82 % Explain the process of public key crypto
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	83 % - explain fingerprint
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	84 \overlays{3}{
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	85 \begin{slide}{Asymmetric Ciphers}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	86 \begin{itemstep}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	87 \item Encrypt/Decrypt
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	88 \begin{itemstep}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	89 \item Encrypt with public key
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	90 \item Decrypt with private key
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	91 \end{itemstep}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	92 \end{itemstep}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	93 \end{slide}}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	94
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	95 \overlays{1}{
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	96 \begin{slide}{Asymmetric Ciphers}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	97 \begin{center}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	98 \includegraphics[width=0.5\linewidth]{Public_key_encryption}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	99 \end{center}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	100 \end{slide}}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	101
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	102 \overlays{3}{
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	103 \begin{slide}{Asymmetric Ciphers}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	104 \begin{itemstep}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	105 \item Sign/Verify signature
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	106 \begin{itemstep}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	107 \item Sign with private key
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	108 \item Verify with public key
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	109 \end{itemstep}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	110 \end{itemstep}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	111 \end{slide}}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	112
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	113 \overlays{1}{
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	114 \begin{slide}{Asymmetric Ciphers}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	115 \begin{center}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	116 \includegraphics[width=0.5\linewidth]{Public_key_signing}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	117 \end{center}
2 5f931119cf7b History/intro to crypto/symmetric crypto slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 1 diff changeset	118 \end{slide}}
3 f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	119
0 199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	120 % PGP/GPG's role
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	121 % - why is GPG useful? (for me) / why would I want to use it?
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	122 % - encrypt documents
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	123 % - sign documents
4 0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	124 \overlays{6}{
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	125 \begin{slide}{What, Why, How?}
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	126 \begin{itemstep}[2]
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	127 \item What? --- GPG
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	128 \item Why?
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	129 \begin{itemstep}
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	130 \item Encrypt/decrypt documents
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	131 \item Sign/verify documents
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	132 \end{itemstep}
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	133 \item How?
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	134 \end{itemstep}
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	135 \end{slide}}
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	136
6 32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	137 % PRE PRESENTATION TODO:
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	138 % - clear the keyring
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	139 % - import my own key
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	140 % - make sure we have:
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	141 % file1.txt
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	142 % file2.txt{,.asc}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	143 % file3.txt
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	144 %
0 199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	145 % - how do you use it?
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	146 % - DEMO: sign a doc
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	147 % - DEMO: verify sig on a doc
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	148 % - DEMO: encrypt a doc
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	149 % - DEMO: decrypt a doc
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	150 % - There are frontends to make things easier
6 32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	151 %
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	152 % Packages to remove after demo
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	153 % kmail libkcal2b libkdepim1a libkleopatra1 libkmime2 libkpimidentities1 libksieve0
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	154 % libktnef1 libmimelib1c2a gpgsm libksba8 libpth2
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	155 \overlays{7}{
4 0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	156 \begin{slide}{Demo Time!}
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	157 \begin{itemstep}[2]
6 32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	158 % gpg --gen-key
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	159 \item Generate a key
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	160
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	161 % gpg --clearsign file1.txt
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	162 % gpg -a --sign file1.txt
4 0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	163 \item Sign a file
6 32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	164
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	165 % gpg --verify file2.txt.asc
4 0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	166 \item Verify the signature on a file
6 32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	167
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	168 % gpg --encrypt file3.txt
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	169 % gpg -a --encrypt file3.txt
4 0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	170 \item Encrypt a file
6 32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	171
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	172 % gpg --decrypt file4.txt
4 0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	173 \item Decrypt a file
6 32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	174
4 0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	175 \item Nasty, eh?
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	176 % FIXME: pick some frontends to demo
6 32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	177 % - kgpg
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	178 % - kmail
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	179 % - mutt
4 0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	180 \end{itemstep}
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	181 \end{slide}}
0cbc2268d06f Intro to GPG & Demo slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 3 diff changeset	182
0 199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	183 % what is keysigning?
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	184 % - How do you verify who a key belongs to?
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	185 % - web of trust
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	186 % - alice/bob/etc. web - built one sig at a time
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	187 % what will happen next month?
3 f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	188 % - generate keys
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	189 % - send the PUBLIC key to me
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	190 % - I will compile a list of keys
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	191 % - I will put it on the web
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	192 % - you will verify that your key is correct
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	193 % - if it is NOT, let me know ASAP
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	194 % - print a copy & bring it next month
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	195 % - next month, we'll go though each key
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	196 % - the author will read it
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	197 % - the author will present sufficient ID
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	198 % - rest will verify
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	199 % - go home, and for each key which was verified by YOU
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	200 % - sign it
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	201 % - send me the signed public keys
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	202 % - I'll combine them, and create a lilug keyring that
f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	203 % everyone can import
5 0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	204 \overlays{8}{
8 c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	205 \begin{slide}{Before Next Meeting}
5 0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	206 \begin{itemstep}[2]
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	207 \item Generate key pair
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	208 \item Send the \emph{public} key to me
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	209 \item I will compile a list of keys
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	210 \item I will put it on the web
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	211 \item You will verify that your key is correct
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	212 \begin{itemstep}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	213 \item If it is \emph{NOT}, let me know \emph{ASAP}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	214 \end{itemstep}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	215 \item Print a copy \& bring it next month
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	216 \end{itemstep}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	217 \end{slide}}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	218
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	219 \overlays{5}{
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	220 \begin{slide}{During Next Meeting}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	221 \begin{itemstep}[2]
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	222 \item We'll go though each key
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	223 \begin{itemstep}
9 15fe3974de32 small fixes to the slideshow Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 8 diff changeset	224 \item The owner will read it
15fe3974de32 small fixes to the slideshow Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 8 diff changeset	225 \item The owner will present sufficient ID
5 0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	226 \item Rest will verify
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	227 \end{itemstep}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	228 \end{itemstep}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	229 \end{slide}}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	230
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	231 \overlays{5}{
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	232 \begin{slide}{After Next Meeting}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	233 \begin{itemstep}[2]
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	234 \item Go home, and for each key which was verified by \emph{YOU}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	235 \begin{itemstep}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	236 \item Sign it
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	237 \end{itemstep}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	238 \item Send me the signed public keys
9 15fe3974de32 small fixes to the slideshow Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 8 diff changeset	239 \item I'll combine them, and create a LiLUG keyring that
5 0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	240 everyone can import
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	241 \end{itemstep}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	242 \end{slide}}
0455911c20bf More notes about asym crypto; Before/during/after next meeting slides Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 4 diff changeset	243
6 32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	244 % Copyright/references
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	245 \overlays{1}{
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	246 \begin{slide}{References}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	247 \begin{itemize}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	248 \item Images shamelessly stolen from Wikipedia.
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	249 \item Wikipedia \\
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	250 \href{http://en.wikipedia.org/wiki/Asymmetric\_key\_algorithm}{Asymmetric key algorithm}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	251 \item GNU Privacy Guard \\
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	252 \url{http://www.gnupg.org}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	253 \item OpenPGP Message Format \\
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	254 \url{http://www.ietf.org/rfc/rfc2440.txt}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	255 \end{itemize}
32a5f6b01723 Slideshow should be done Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 5 diff changeset	256 \end{slide}}
3 f6292213320b Many additions... Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 2 diff changeset	257
1 713322cfe240 References and Q&A in the outline Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 0 diff changeset	258 % Q&A
0 199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	259 \overlays{1}{
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	260 \begin{slide}{Q\&A}
8 c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	261 \vspace{0.5in}
0 199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	262 \begin{center}
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	263 Questions?
8 c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	264
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	265 \vspace{0.5in}
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	266 \small
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	267 Remember: Just because I'm paranoid doesn't mean they aren't out to get me.
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	268 \normalsize
0 199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	269 \end{center}
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	270 \end{slide}}
199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	271
8 c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	272 %%%%%%% EXTRA SLIDES
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	273
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	274 % Caesar cipher
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	275 \overlays{1}{
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	276 \begin{slide}{Caesar Cipher}
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	277 \begin{itemize}
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	278 \item To encrypt: \\
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	279 $e = (c + 3)\, mod\, 26$
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	280 \item To decrypt: \\
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	281 $c = (e - 3)\, mod\, 26$
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	282 \end{itemize}
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	283 \end{slide}}
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	284
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	285 % ROT13
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	286 \overlays{1}{
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	287 \begin{slide}{ROT13}
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	288 \begin{itemize}
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	289 \item To encrypt: \\
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	290 $e = (c + 13)\, mod\, 26$
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	291 \item To decrypt: \\
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	292 $c = (e - 13)\, mod\, 26 = (e + 13)\, mod\, 26$
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	293 \end{itemize}
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	294 \end{slide}}
c67713358644 extra slides (caesar & rot13) Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: 6 diff changeset	295
0 199b4a4f57c0 Initial import Josef "Jeff" Sipek <jeffpc@josefsipek.net> parents: diff changeset	296 \end{document}

Mercurial > lilug > gpg

annotate slideshow.tex @ 11:4a04a5a3f451