EP4285308

• fiskaly GmbHsince Nov 3, 2023

A method for securely registering a sequence of transactions with a distributed system (1), the distributed system itself and corresponding computer programs and computer-readable media, wherein the distributed system (1) comprises a registration device (6) and a signature device (8), wherein the registration device (6) comprises a transaction storage (16) for storing signed transaction records (15) signed by the signature device (8), wherein the method comprises: comparing a present value of a key usage counter of the signature device (8) with a last recorded value, which is associated with a last signed transaction record in the transaction storage (16), loading at least one previously signed transaction record (23) from a record buffer (24) of the signature device (8) responsive to detecting a gap between the present value and the last recorded value, and transmitting the loaded at least one previously signed transaction record (23) to the registration device (6).

From the international application WO2022162169