Confidential data e.g. patient name, portion anonymization method, for hospital, involves encrypting block including block data of original data set, with keys, such that detail data and/or anonymized data are released from new data set

摘要

The method involves forming data, which is anonymized from an original data set. A new data set is formed from detail data of the original data set together with the anonymized data. The new data set is divided into multiple blocks, where the blocks correspond to different confidentiality degrees or target groups. One of the blocks including block data of the original data set, is encrypted with keys, such that the detail data and/or the anonymized data are released from the new data set, where the keys are defined in a data set -specific manner.