Patent Document ID: 9058505
Application ID: 13927597

Base Claim:
1. A method to control access to information, the method comprising: computer hardware determining whether a first type of field of a first document has restricted access; the computer hardware generating a modified list of index terms by encrypting tokens occurring in the first type of field using a first set of encryption settings; the computer hardware executing an indexing step using the modified list of index terms; the computer hardware generating a modified list of search terms by adding first additional search terms to a list of search terms, wherein the first additional terms include synonyms of the search terms and terms that are related to the search terms; the computer hardware removing frequently used words from the modified list of search terms; and responsive to a determination that a user has authorization to view the first type of field, the computer hardware adding to the modified list of search terms an encrypted version of a search term included in the list of search terms such that execution of a search using the modified list of search terms returns a result that identifies the first document as a search result when either an unencrypted or an encrypted version of a search term is found in the index terms associated with the first document.

---

Claim 2:
2. The method of claim 1 , the method further including: the computer hardware determining whether the user has authorization to view the first type of field, based on a first degree of authorization of the user; the computer hardware generating the modified list of search terms by adding second additional search terms to a list of search terms, based on the first degree of authorization of the user to view the first type of field, wherein the second additional search terms are encrypted search terms created using the first set of encryption settings; the computer hardware executing a search using the modified list of search terms; and the computer hardware identifying a search result based, at least in part, on the modified list of search terms.