Slovak University of Technology, Bratislava
Faculty of Informatics and Information Technologies
Degree Course: INFORMATICS
Author: Bc. Matúš Ferenc
Diploma thesis: Two-Party Generation of DSA Signature
Supervisor: Ing. Marek Greško
2004, May

This project is concerned with design and implementation of application which enables to sign the message by two parties and to verify that signature. The application uses modification of DSA signature scheme which enables to generate digital signature by two parties. It was necessary to implement some additive cryptosystems with specific homomorphic properties (Paillier and Naccache-Stern cryptosystems) for its realisation. In application the user has an option to choose the additive cryptosystem as well as option to add his own modules with other additive cryptosystems that are appropriate to S-DSA scheme realisation.