1. A method for the transition from a first masked representation of a value to be kept secret to a second masked representation of the value, wherein the value to be kept secret is prevented from being spied out, wherein the first masked representation is based on a first masking rule having a first mask and the second masked representation is based on a second masking rule having a second mask, and wherein, in calculating the second masked representation, at least one previously calculated table having a plurality of entries is used and the calculation is carried out dependent on at least one veiling parameter.