Patent ID: 11960620
Assignee: PROTEGRITY CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 10:
11. A non-transitory computer-readable storage medium storing executable computer instructions that, when executed by a processor, cause the processor to perform steps comprising:
receiving a string of characters in a first character domain at a local server;
accessing, by the local server, a first token table and a second token table, the first token table and the second token table each mapping each of a set of input values in the first character domain to a different token value comprising characters in a second character domain different from the first character domain;
tokenizing, by the local server, the accessed string of characters by modifying a first substring of the access string of characters with one or more initialization vectors and replacing the first modified substring of the accessed string of characters with a first token value mapped to a value of the first substring by the first token table to form a first intermediate string of characters comprising characters in the first character domain and characters in the second character domain;
tokenizing, by the local server, the first intermediate string of characters by replacing a second substring of the first intermediate string of characters comprising characters in the first character domain by replacing the second substring of the first intermediate string of characters with a second token value mapped to a value of the second substring of the first intermediate string of characters by the second token table to form a tokenized string of characters; and
transmitting, by the local server, the tokenized string of characters to a central server.