Crypto Tutorial Overview

This page contains my godzilla crypto tutorial, totalling 509 slides in 8 parts, of which the first 7 are the tutorial itself and the 8th is extra material which covers crypto politics. Part 8 isn’t officially part of the technical tutorial itself.

The tutorial is done at a reasonably high level, there are about two dozen books which cover things like DES encryption done at the bit-flipping level so I haven’t bothered going down to this level. Instead I cover encryption protocols, weaknesses, applications, and other crypto security-related information. Since the slides are accompanying material for a proper tutorial, there’s a lot of extra context which isn’t available just by reading the slides. Bear in mind that some of the claims and comments on the slides need to be taken in the context of the full tutorial. Accompanying the slides are about 150 images, unfortunately I can’t make these available for copyright reasons.

The Tutorial

The tutorial is formatted so that two slides fit one page, which means you’ll burn out about 260 pages of paper printing them all out (half that if you print double-sided). To view the tutorial you’ll need a copy of the free Adobe Acrobat Reader software. Note that most of the diagrams (and there are  quite a few of them) will look a lot better on paper than on screen. The gv viewer (a replacement for ghostview) displays the slides better than the Acrobat Reader, especially with antialiasing enabled.  The output was generated from Powerpoint slides, unfortunately Powerpoint converts the
text colours of embedded tables into a very hard-to-read light grey, ignoring the actual text colouring set for the table. There doesn’t appear to be any way to fix this problem.

The technical material consists of 7 parts:

Part1, 66 slides: Download file
Security threats and requirements, services and mechanisms, historical ciphers, cipher machines, stream ciphers, RC4, block ciphers, DES, breaking DES, brute-force attacks, other block ciphers (triple DES, RC2, IDEA, Blowfish, CAST-128, Skipjack, GOST, AES), block cipher encryption modes,  public-key encryption (RSA, DH, Elgamal, DSA), elliptic curve algorithms, hash and MAC algorithms (MD2, MD4, MD5, SHA-1, RIPEMD-160, the HMAC’s).

Part2, 104 slides: Download file
Key management, key distribution, the certification process, X.500 and X.500 naming, certification heirarchies, X.500 directories and LDAP,  the PGP web of trust, certificate revocation, X.509 certificate structure and extensions, certificate profiles, setting up and running a CA, CA policies, RA’s, timestamping, PGP certificates, SPKI, digital signature legislation.

Part3, 96 slides: Download file
IPSEC, ISAKMP, Oakley, Photuris, SKIP, ISAKMP/Oakley, SSL, non-US strong SSL, SGC, TLS, S-HTTP, SSH, SNMP security, email security mechanisms, PEM, the PEM CA model, PGP, PGP keys and the PGP trust model, MOSS, PGP/MIME, S/MIME and CMS, MSP.

Part4, 55 slides: Download file
User authentiction, Unix password encryption, LANMAN and NT domain  authentication and how to break it, Netware 3.x and 4.x authentication, Kerberos 4 and 5, Kerberos-like systems (KryptoKnight, SESAME, DCE), authentication tokens, SecurID, S/Key, OPIE, PPP PAP/CHAP, PAP variants (SPAP, ARAP, MSCHAP), RADIUS, TACACS/XTACACS/TACACS+, ANSI X9.26, FIPS 196,  biometrics, PAM.

Part 5, 27 slides: Download file
Electronic payment mechanisms, Internet transactions, payment systems (Netcash, Cybercash, book entry systems in general), Digicash, SET, the SET CA model.

Part 6, 44 slides: Download file
Why security is hard to get right, buffer overflows, protecting data in memory, storage sanitisation, data recovery techniques, random number generation, TEMPEST, snake oil crypto, selling security.

Part 7, 54 slides: Download file
Smart cards, smart card file structures, card commands, electronic purse standards, attacks on smart cards, voice encryption, GSM security and how  to break it, traffic analysis, anonymity, mixes, onion routing, mixmaster, crowds, steganography, watermarking, misc. crypto applications (hashcash, PGP Moose).

Here endeth the technical material. The final part goes into crypto politics.

Part 8, 63 slides: Download file
History of crypto politics, digital telephony, Clipper, Fortezza and  Skipjack, post-Clipper crypto politics, US export controls, effects of export controls, legal challenges, French and Russian controls, non-US controls (Wassenaar), Menwith Hill, Echelon, blind signal demodulation, Echelon and export controls, Cloud Cover, UK DTI proposals, various GAK issues.

Crypto Tutorial Overview, by Peter Gutmann

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