We provide explanations and background information on elections, voting rights and digital democracy
The blocking checksum is a checksum which controls the integrity of the collected data of such kind.
Usage of block checksums in POLYAS online voting systems
In online voting a block checksum is used for checking the cast ballots. The input ballots are sorted into blocks and comprise their own block checksum. Each new block is built on the basis of the previous block. The ballots inside one block are this way clearly sorted according to random classification. These classifications make sure that the allocation to time slots at which the ballots were cast, as well as the attribution to voter identites, is impossible. A block checksum is built on the basis of a collective checksum of the election. The additional goal of the checksum is this ballot block.
Checking the correct counting of the online ballot box with the help of block checksums