Digital signature algorithms: present and future


The digital signature is, in many respects, the analogue in the digital world of the handwritten signature that we all use on a daily basis.

The main difference between these two methods, however, lies in the fact that, while for the second the authenticity of the signature is linked to the handwriting of the person who affixes it, in the first case it is guaranteed by the possession of a cryptographic tool (cryptographic keys) by the signatory.

Similarly to the handwritten signature, the digital signature also has non-repudiation as its main objective (the signatory cannot deny having signed a document), as well as ensuring the authenticity and integrity of the signed document.


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The authors

Edoardo Signorini, graduated in Mathematics with a curriculum in cryptography at the University of Trento, in 2020 carried out the Master’s thesis in the field of Post-Quantum Cryptography (PQC) at Telsy. He currently holds the role of cryptographer within the Telsy research group and carries out an industrial research doctorate in Pure and Applied Mathematics at the Politecnico di Torino. His activity focuses on PQC research and on the analysis and development of cryptographic protocols.

Marco Rinaudo, a bachelor’s degree in Mathematics at the University of Turin and a student of the master’s degree course in Mathematics with a specialization in Cryptography at the University of Trento, currently an intern in the Telsy research group.