Distributed tokenization using several substitution steps

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United States of America Patent

PATENT NO 9639716
SERIAL NO

14942668

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Abstract

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A method for distributed tokenization of sensitive strings of characters, such as social security numbers, credit card numbers and the like, in a local server is disclosed. The method comprises the steps of receiving from a central server at least one, and preferably at least two, static token lookup tables, and receiving a sensitive string of characters. In a first tokenization step, a first substring of characters is substituted with a corresponding first token from the token lookup table(s) to form a first tokenized string of characters, wherein the first substring of characters is a substring of the sensitive string of characters. Thereafter, in a second step of tokenization, a second substring of characters is substituted with a corresponding second token from the token lookup table(s) to form a second tokenized string of characters, wherein the second substring of characters is a substring of the first tokenized string of characters. Optionally, one or more additional tokenization steps is/are used.

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Patent Owner(s)

  • PROTEGRITY CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mattsson, Ulf Cos Cob, US 147 3616

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