Work of Stefan Brands

Stefan Brands was a PhD student conducting research in the area of untraceable off-line electronic cash and privacy-protecting mechanisms for digital credentials. Below is a collection of his work on Internet cash systems and related discussions. His publications on electronic cash can be found here.

Brand's Internet Cash System.

An Efficient Off-line Electronic Cash System based on the Representation Problem.

Discrete Logs Part 1.

Discrete Logs Part 2.

Some maths.

Brand's cash simplified.

Hardware and observer chips.

Technical notes.

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Michael Peirce