News
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13.03.2019
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Updated Exam ScheduleHere is the updated exam schedule, only the timeslot for one person changed (at their own request)
10:00-10:30 Kevin Wednesday, 10.04 10:00-10:30 Bohdan Here is the updated exam schedule, only the timeslot for one person changed (at their own request)
10:00-10:30 Kevin Wednesday, 10.04 10:00-10:30 Bohdan
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18.02.2019
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Exam DatesHi all, 10:00-10:30 Kevin Hi all, 10:00-10:30 Kevin Wednesday, 10.04 10:00-10:30 Bohdan Please let me know soon if you would like to reschedule or if you're indisposed
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08.02.2019
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Doodle Poll for Exam DatesHere'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) |
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04.02.2019
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Last Q&A Session on Friday 08.02We will have a final Q&A Session Friday art 8:30 |
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31.01.2019
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Q&A Session on FridayThe results from the doodle poll are in. We will meet tomorrow at 12:30 in the usual place. |
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30.01.2019
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Alternative Timeslot for Q&A Session on FridayHey 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
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28.01.2019
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Q&A Session Friday 8:30Usual place, usual time |
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24.01.2019
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Exercise tomorrowHey everyone, tomorrow 8:30 exercises. We'll discuss exercise sheet 2. |
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17.01.2019
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Another typo on exercise sheet 02In exercise 4 DEC outputs either m or \bot (not 1 or 0). Thx to Bohdan |
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17.01.2019
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No exercises tomorrow 18.01.19Due to a clash of appointments the exercises are postponed to 25.01.19 |
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14.01.2019
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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)
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11.01.2019
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Exercise Sheet 2 updatedFixed 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 |
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10.01.2019
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No Exercise this weekThe next exercise/tutorial will be on the 18.01.2019 |
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17.12.2018
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New Exercise Sheet outIt is due the 18.01.19 |
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17.12.2018
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No Exercises on Friday 21.12.18On Friday 21.12.2018 there will be no exercises. Happy Hollidays! |
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02.12.2018
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Exercise Sheet SubmissionPlease submit you exercise sheets here |
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19.11.2018
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Another typo in Exercise Sheet 01 fixed... we're getting there :-) |
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17.11.2018
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Exercise Sheet 01 UpdatedTypos 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. |
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11.11.2018
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Exercise Sheet outThe first exercise sheet is out. It is due Friday 07.12.18 |
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10.11.2018
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No Lecture on Monday 12.11.18Due to some unforeseen issues there will be no lecture on Monday 12.11. The next lecture will be on Monday the 19.11 |
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05.11.2018
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Chosen Ciphertext security of modified ElGamalThe result I referenced today can be found here |
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05.11.2018
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ExercisesExercises will be Friday 8:30 / 8:45 at CISPA 0.06. First time Friday 09.11.18. |
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05.11.2018
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Doodle Poll for Exercises |
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10.10.2018
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First LectureDue to a collision with an introduction event on Monday 15.10.18, the first lecture will take place Monday 22.10.18. |
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
- Lecture 01 Slides
- Lecture 02 Slides -- Annotated
- Lecture 03 Slides -- Annotated
- Lecture 04 Slides -- Annotated
- Lecture 05 same slides as lecture 04 -- Annotated
- Lecture 05 Slides -- Annotated
- Lecture 06 Slides -- Annotated -- Update Annotated
- Lecture 07 Slides -- Annotated
Exercise Slides
- Exercise 01: Introduction to ZK Proofs
- Exercise Notes 02
- Exercise Notes 03
Exercise Sheets
- Exercise Sheet 01 due on Friday 07.12.18
- Exercise Sheet 02 due on Friday 18.01.19