Anonymisation (or pseudo-anonymisation) method(s) used ["hiding - Attribute is replaced with a constant value (typically 0) of the same size. Sometimes called 'black marker'.", 'hash - A hash function maps each attribute to a new (not necessarily unique) attribute.', 'permutation - Maps each original value to a unique new value.', "prefix-preserving - Any two values that had the same n-bit prefix before anonymisation will still have the same n-bit prefix as each other after anonymization. (Would be more accurately called 'prefix-relationship-preserving', because the actual prefix values are not preserved.) ", 'shift - Adds a fixed offset to each value/attribute.', 'enumeration - Map each original value to a new value such that their ordering is preserved.', 'partitioning - Possible values are partitioned into meaningful sets; actual values are replaced with a fixed value from the same set. E.g., TCP port numbers 0 to 1023 are replaced with 0, and 1024 to 65535 replaced with 65535.', 'updated - Checksums are recalculated to reflect changes made to other fields.', 'truncation - Field is shortened, losing data at the end.', 'encryption - Attribute is encrypted.']
+