METHOD OF DEPERSONALIZATION OF PERSONAL DATA Russian patent published in 2017 - IPC G06F21/62 G06F12/14 

FIELD: information technology.

SUBSTANCE: method of depersonalization of personal data protects personal data information systems (PDIS) from unauthorized access (UAA) at the stages of development and optimisation, operates with personal data of subjects stored and processed in PDIS and performs hashing of key attributes according to Keccak algorithm. At the same time, at the first stage, key attributes are determined expertly. At the second stage, the original data set D (d₁, d₂,…, d_M), where M is the number of attributes, is divided into two disjoint subsets of data A₁ and A₂ related to key and non-key attributes, respectively. At the third stage, data is hashed from A₁ for each subject, and the hash-function value is calculated, which is one of the attributes of both sets.

EFFECT: increased security.

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