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NIST IR 8053, De-Identification of Personal Information, p. 31

3 records were read from this source, dated 1 Jul 2022 to Sep 2023.

Last checked 15 Oct 2026

What was read from it

Records read from this source
Record	Kind	As stated	Dated
Several kinds of evidence, never one detector	De-identification rule	Four layers: the people your exports list in their own structure (senders, authors,…	1 Jul 2022
Stand-ins from a secret key you keep, never a plain hash	De-identification rule	Each stand-in number comes from a keyed hash (HMAC-SHA-256) under a 256-bit key made on…	Sep 2023
A stand-in stays the same within a file, unless the use needs more	De-identification rule	By default a person keeps one stand-in within each file and gets another in the next, so…	Sep 2023