Advanced Public Key Cryptography Nico Döttling

News

08.02.2019

Doodle Poll for Exam Dates

Here's the doodle vote for the preferred days of the oral exams. Please only mark with no if you really do not have time on a certain day (i.e. not if it is just a bit inconvenient for you)

https://doodle.com/poll/znfdvchpgxn82wkx

04.02.2019

Last Q&A Session on Friday 08.02

We will have a final Q&A Session Friday art 8:30

31.01.2019

Q&A Session on Friday

The results from the doodle poll are in. We will meet tomorrow at 12:30 in the usual place.

30.01.2019

Alternative Timeslot for Q&A Session on Friday

Hey everyone,

I'm terribly sorry but there's yet another clash of appointments this Friday at our usual timeslot. However, I'd like to do the Q&A session anyway this Friday. Please indicate in the doodle below which timeslots would suit you. Majority... Read more

Hey everyone,

I'm terribly sorry but there's yet another clash of appointments this Friday at our usual timeslot. However, I'd like to do the Q&A session anyway this Friday. Please indicate in the doodle below which timeslots would suit you. Majority wins.

https://doodle.com/poll/svymrkdd4yqh2va3

 

28.01.2019

Q&A Session Friday 8:30

Usual place, usual time

24.01.2019

Exercise tomorrow

Hey everyone, tomorrow 8:30 exercises. We'll discuss exercise sheet 2.

17.01.2019

Another typo on exercise sheet 02

In exercise 4 DEC outputs either m or \bot (not 1 or 0). Thx to Bohdan

17.01.2019

No exercises tomorrow 18.01.19

Due to a clash of appointments the exercises are postponed to 25.01.19

14.01.2019

Another update of exercise sheet 2

- In Exercise 2 we require the group G to be of prime order (in fact, any composite order with large factors would do)

- In Exercise 3 we require that the field F has size 2^\secparam (instead of \secparam)

 

11.01.2019

Exercise Sheet 2 updated

Fixed some unclarities: In exercise 2 added the condition m_0 \neq m_1 to the binding property, in exercise 4 a \gamma was missing in the description of DEC.

Thanks to Florian and Jesko

10.01.2019

No Exercise this week

The next exercise/tutorial will be on the 18.01.2019

17.12.2018

New Exercise Sheet out

It is due the 18.01.19

17.12.2018

No Exercises on Friday 21.12.18

On Friday 21.12.2018 there will be no exercises. Happy Hollidays!

02.12.2018

Exercise Sheet Submission

Please submit you exercise sheets here 

19.11.2018

Another typo in Exercise Sheet 01 fixed

... we're getting there :-)

17.11.2018

Exercise Sheet 01 Updated

Typos in the exercise sheet have been fixed. Also, due to a suggestion I've added an extra exercise (1b) which shows why we can assume without loss of generality that adversaries are deterministic. 

11.11.2018

Exercise Sheet out

The first exercise sheet is out. It is due Friday 07.12.18

10.11.2018

No Lecture on Monday 12.11.18

Due to some unforeseen issues there will be no lecture on Monday 12.11. The next lecture will be on Monday the 19.11

05.11.2018

Chosen Ciphertext security of modified ElGamal

The result I referenced today can be found here

05.11.2018

Exercises

Exercises will be Friday 8:30 / 8:45 at CISPA 0.06. First time Friday 09.11.18.

05.11.2018

Doodle Poll for Exercises

https://doodle.com/poll/et4448umzzgqvqgr

10.10.2018

First Lecture

Due to a collision with an introduction event on Monday 15.10.18, the first lecture will take place Monday 22.10.18.

Show all
 

Advanced Public Key Cryptography

Overview

In the past three decades cryptography has taken on tasks above and beyond the basic task of securing point-to-point communication channels: Maintaining the privacy of individuals in databases, secure computation on large datasets and anonymous transactions in blockchains-based currencies to name just a few.

This course will cover the state-of-the-art in public key encryption and discuss some of the guiding challenges and frontier-problems of today.

The following topics will be covered:

  • Modelling Security for public key encryption
  • Proving security of public key encryption schemes
  • Tools for building public key encryption schemes
  • Notions of public key encryption with enhanced functionality:
    Homomorphic Encryption
    Identity-Based Encryption
    Attribute-Based Encryption
    Functional Encryption

Questions? Don't hesitate to write a mail to "doettling at cispa.saarland"

Prerequisites

Some familiarity with the basics of cryptography is expected, e.g. as provided in the summer-term course "Cryptography".

When and Where

Monday 10:00 - 11:30 in building E9 1 (CISPA), room 0.05 (lecture hall ground floor). First lecture on 22.10.18.
 

Materials

Lecture Slides

Exercise Slides

Exercise Sheets

 



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