Cryptographic methods used for signatures, seals, time stamps, technical evidence records, or encryptions, for example, must be regularly adapted to the current state of the art in order to retain their protective effect. If this is neglected, the integrity of documents can no longer be guaranteed (e.g. due to an outdated and insecure signature). Furthermore, a file may not be admitted as evidence in court even if the document itself is still completely correct. The confidentiality of an encrypted document can also be lost this way.