06 20008 Cryptography

Volker Sorge 10 credits in Semester 1

News

The full glossary for the Cryptography lecture notes is available.

Field Trip to Bletchley Park, Wednesday 9th January 2008: We will leave at 10 am sharp(!) from the roundabout between University station and building B1 on the blue zone of the campus map. We should be back before 6pm.

For Programming Exercise 2 I have again put together a stepwise walkthrough of the algorithm using the first message to be hashed as an example. Please have a look at the PDF or PS file.

To help with debugging for Programming Exercise 1 I have put together a stepwise walkthrough of the algorithm, including all intermediate results, for the first message/key pair. Please have a look here.

There has been an addition to Handout 5 regarding security and legal issues of CSS.

The Exercise 1 marks have been entered. Please have a look here. Please check the marks and in case you have not got a mark or you have a 0 mark but believe this is incorrect, please come and see me after the next lecture!

An addendum has for handout 2 has been added with additional explanations and examples for DES. Please have a look here.

Several mistakes on the solutions for exercise sheet 1 have been found. Please see the Errata for corrections.

The lecture theatre for Friday lecture and exercise classes have been fixed:
Lecture: Fridays 2:00-3:00 in G34, Mechanical Engineering (Building Y3 on the Campus Map)
Exercises: Fridays 3:00-4:00 in 301, Biosciences (Building R27 on the Campus Map)

Lectures

The lectures are
Tuesdays, 12:00-1:00 in UG04, Learning Centre (Building R28 on the Campus Map)
Fridays 2:00-3:00 in G34, Mechanical Engineering (Building Y3 on the Campus Map)

Exercises are
Fridays 3:00-4:00 in 301, Biosciences (Building R27 on the Campus Map)
Exercises will be held by Dr Guilin Wang.

Assessment

80% of your course mark will be determined by a 1.5-hour examination in May (or early June).

20% of the mark is determined by continuous assessment. See Handout 0 for details.

For continuous assessment exercises marked so far please see here

Questions

If you have any questions, problems, or comments, please email me or come and see me during my office hours Tuesdays 2.30-3.30pm. To see me outside these office hours, please email me and suggest some times, which are compatible with my timetable.

When emailing, please observe that you can expect the fastest response, when your email is short and in plain ASCII. If you have to send attachments, please make sure they are in some open standard format. In particular, do NOT send MS word files. Why? See here.

Recommended Books

Title Author(s) Publisher Comments
Practical Cryptography Fergueson, Schneier John Wiley & Sons Supplementary Reading
Applied Cryptography Schneier John Wiley & Sons Supplementary Reading
Handbook of Applied Cryptography Menezes, van Oorschot, Vanstone CRC Press Supplementary Reading
Cryptography Smart McGraw Hill Supplementary Reading
Beginning Cryptography with Java Hook John Wiley & Sons Book on Programming
Contemporary Cryptology Catalano, Cramer, Damgard, DiCrescenzo, Pointcheval, Takagi Springer Verlag Advanced Material

Handouts and Worksheets

It is planned to make the handouts for the lectures available on-line after they have been handed out in the lectures. Please DO NOT PRINT THEM OUT. First check for spare and reference copies which can be found in the School's library. DO NOT WASTE PRINTER RESOURCES.

---> --->
Week Topic Handout Solution
0 General Information gzipped PostScript, pdf  
1 Historical Ciphers gzipped PostScript, pdf gzipped PostScript, pdf
2 Block Ciphers: Feistel Ciphers, DES gzipped PostScript, pdf gzipped PostScript, pdf
3 Modes of Operations, Cryptomeria gzipped PostScript, pdf gzipped PostScript, pdf
4 AES (Rijndael), Finite Fields gzipped PostScript, pdf gzipped PostScript, pdf
5 Stream Ciphers: RC4, LFSR, CSS, A5/1 gzipped PostScript, pdf gzipped PostScript, pdf
6 Key Exchange Protocols
Overview of Cryptanalysis techniques		 gzipped PostScript, pdf  
7 Cryptographic Hash Functions
Message Authetication Codes		 gzipped PostScript, pdf gzipped PostScript, pdf
8 Public Key Cryptography, Discrete Logarithms gzipped PostScript, pdf gzipped PostScript, pdf
9 RSA, Generating Prime Numbers, Arithmetic Modulo Composites gzipped PostScript, pdf
 gzipped PostScript, pdf
10/1 Quantum Cryptography
Guest Lecture by Iain Styles		 pdf  
10/2 Digital Signatures
Guest Lecture by Guilin Wang		 gzipped PostScript, pdf Slides  
11 Certificates, Commitment Schemes, Zero Knowledge Proofs gzipped PostScript, pdf  
12 Review Suggestions gzipped PostScript, pdf  
Glossary The complete Cryptography glossary gzipped PostScript, pdf  

Errata can be found here.

Programming Exercises

Implement the exercises in a programming language of your choice. The only requirement is that the program should be runnable on the Linux machines in the department. Include sufficient explicit output into your program so I can convince myself that the computation actually works.
Submit the source of your program (with an included comment how to run it) via Moodle.
Also submit a paper with the requested answers (i.e. only the answers to the problems, not the full intermediate output!) via the pigeonholes.

No. Topic
1 Miniature Rijndael In Handout 4 (ps.gz, pdf) Solutions (ps.gz, pdf) Marking Scheme
2 MD-like Hash Function In Handout 7 (ps.gz, pdf) Solutions (ps.gz, pdf) Marking Scheme

Maintained by: Volker Sorge, School of Computer Science, The University of Birmingham
Last modified: Wed Apr 30 18:24:28 BST 2008