In cryptocurrencies, transactions are authenticated with digital signatures. The large number of transactions is a major challenge in blockchains because they all need to be signed and later authenticated by other nodes (so-called miners/farmers/validators). This can work because signature schemes are used that can be efficiently aggregated and batch validated. The main challenge is that multiple definitions of signature aggregation are used in blockchains. Student's task: 1. to learn about widely adopted digital signatures. 2. to organize and define the aggregation operations. 3. to examine the common signatures from the point of view of aggregation operations. 4. evaluate their performance against existing implementations.

In cryptocurrencies, transactions are authenticated with digital signatures. The large number of transactions is a major challenge in blockchains because they all need to be signed and later authenticated by other nodes (so-called miners/farmers/validators). This can work because signature schemes are used that can be efficiently aggregated and batch validated. The main challenge is that multiple definitions of signature aggregation are used in blockchains. Student's task: 1. to learn about widely adopted digital signatures. 2. to organize and define the aggregation operations. 3. to examine the common signatures from the point of view of aggregation operations. 4. evaluate their performance against existing implementations.