Mapping between tokenization domains

摘要

A tokenization environment includes a first tokenization system in a first token domain and a second tokenization system in a second token domain. A token mapper accesses a first token from the first tokenization system and maps it to a second token from the second tokenization system. The first token can be a single-use or SLT token mapped to a clear text value within a single-use token table in the first tokenization system. The token mapper can identify the clear text value, and can query a multi-use token table in the second tokenization system with the clear text value to identify a multi-use token (the second token) mapped to the same clear text value. The token mapper can store the association between the first token and the second token in a token map.

主权项

1. A computer-implemented method for mapping between tokenization domains, comprising:
receiving, by a computer, a single-use token from a single-use token table, the single-use token table including one or more single-use tokens each mapped to an associated clear text value; identifying in the single-use token table a clear text value to which the single-use token is mapped; querying a multi-use token table with the identified clear text value, the multi-use token table including one or more multi-use tokens each mapped to an associated clear text value; receiving, by the computer, a multi-use token mapped to the identified clear text value; storing, by the computer, an association between the received single-use token and the received multi-use token; accessing, by the computer, tokenized data comprising data tokenized using the single-use token such that a portion of the tokenized data comprises the single-use token; querying the stored association using the single-use token to identify the multi-use token; retokenizing the tokenized data by replacing the portion of the tokenized data comprising the single-use token with the multi-use token; and outputting the retokenized data.