Table-Connected Tokenization
AssigneeProtegrity Corporation
InventorsUlf Mattsson, Yigal Rozenberg, Vichai Levy
Life of this patent
Estimating the term…
Abstract
A tokenization system tokenizes sensitive data to prevent unauthorized entities from accessing the sensitive data. The tokenization system accesses sensitive data, and retrieves an initialization vector (IV) from an IV table using a first portion of the sensitive data. A second portion of the sensitive data is modified using the accessed initialization vector. A token table is selected from a set of token tables using a third portion of the sensitive data. The modified second portion of data is used to query the selected token table, and a token associated with the value of the modified second portion of data is accessed. The second portion of the sensitive data is replaced with the accessed token to form tokenized data.
Claims20
A method for improving the security of data in a tokenization environment, comprising:
- receiving data to be tokenized;
- accessing two or more token tables stored at a plurality of token servers by querying the token servers with two or more portions of the received data such that each accessed token table is associated with an index value equal to a value of one of the two or more portions of the received data;
- and
- tokenizing the received data by:
- modifying, the received data using a value corresponding to two or more bits of the received data to produce modified data;
- and
- for each token table of the accessed token tables, replacing, by a hardware processor, a portion of the modified received data with a token value mapped by the token table to a value of the portion of the modified received data to produce tokenized data.
A tokenization system for improving the security of data in a tokenization environment, comprising:
- a non-transitory computer-readable storage medium storing executable instructions that, when executed by a processor, perform steps comprising:
- receiving data to be tokenized;
- accessing two or more token tables stored at a plurality of token servers by querying the token servers with two or more portions of the received data such that each accessed token table is associated with an index value equal to a value of one of the two or more portions of the received data;
- and
- tokenizing the received data by:
- modifying, the received data using a value corresponding to two or more bits of the received data to produce modified data;
- and
- for each token table of the accessed token tables, replacing, by a hardware processor, a portion of the modified received data with a token value mapped by the token table to a value of the portion of the modified received data to produce tokenized data;
- and
- a hardware processor configured to execute the instructions.
A non-transitory computer-readable storage medium storing executable computer instructions that when executed by a hardware processor perform steps for improving the security of data in a tokenization environment, comprising:
- receiving data to be tokenized;
- accessing two or more token tables stored at a plurality of token servers by querying the token servers with two or more portions of the received data such that each accessed token table is associated with an index value equal to a value of one of the two or more portions of the received data;
- and
- tokenizing the received data by:
- modifying, the received data using a value corresponding to two or more bits of the received data to produce modified data;
- and
- for each token table of the accessed token tables, replacing, by a hardware processor, a portion of the modified received data with a token value mapped by the token table to a value of the portion of the modified received data to produce tokenized data.
Dependencies are inferred from the claim text.