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Seminar zur IT-Sicherheit WS 2010/2011


Anonymous Payment with Digital Coins

The idea of digital coin is to map the property of paper money to the digital world. One of the desired properties of paper money is the possibility to (almost) anonymously spend the money and the difficulty to counterfeit money. As an example it is possible to buy food in a super market without revealing the identity of the buyer to the bank, or to the super market in the real world. However this is not the case, if the payment is conducted digitally by credit cards, bank transfers, or by Paypal in the digital world.

In 1982 Chaum proposed the first anonymous digital payment system [Chaum82] that is secure against counterfeit and many works have been contributed to that field since that time. In this system, a user can withdraw money from a bank and later on spend it in a shop, such that even if the shop and the bank collaborate, it is not possible to identity the spender of the money or trace the coin. This property is called anonymous payment. Digital coins are generated by digital signatures; therefore counterfeiting digital coins is as hard as breaking the underlying cryptography that can be considered to be intractable given appropriate cryptographic settings.

Ziel des Seminars ist es, einen Überblick über den aktuellen Stand der Forschung im Bereich anonymous payment herzustellen.



[Chaum82] D. Chaum. Blind Signatures for Untraceable Payments. Crypto’82. 1982.


Typ Tag Uhrzeit Bemerkung Zeitraum Raum
Seminar Mo 10:00 bis 12:00 Uhr

11.10.2010 bis 30.01.2011 H-C 8325
Themenvergabe  Mo 10:00 bis 12:00 Uhr   18.10.2010
H-C 8325
Deadline Gliederung   24:00 Abgabe per Mail
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Deadline Vorabversion   24:00 Abgabe per Mail
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Deadline Endversion   24:00 Abgabe per Mail
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Deadline Folien   24:00 Abgabe per Mail
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Vortrag       wird noch angegeben  


Seminar: 1054700003


Hinweise zur Anmeldung

Themenvergabe und Anmeldung zum Seminar IT-Sicherheit am Montag, den 18.10.2010 um 10:00 Uhr im Raum H-C 8325.

Hinweise zur Erstellung der Ausarbeitung

Wilhelmiina Hämäläinen. Scientific Writing for Computer Science Students.

Hinweise zur Gestaltung des Vortrages

Simon Peyton Jones. How to Give a Great Research Talk.


Studierende der Wirtschaftsinformatik mit angestrebtem Abschluss Diplom II oder Master.