Secured search for ready-made search software

Abstract

Search management systems and methods that cryptographically-secure search indices, search queries, and associated document records while in-use by cloud-based search software without requiring modification to the cloud-based search core software. The search proxy resides between a cloud-based vendor application and the cloud-based search software. The search proxy uses key-based deterministic cryptographic tokenization to irreversibly cryptographically-secure plaintext words from document records for indexing and plaintext keywords from search queries for search and retrieval. The search proxy separately uses key-based encryption on the document record's pre-tokenized plaintext words, adding the encrypted data as a separate field to the document record. This encrypted field is stored as part of the document by the search service. A search query retrieves the encrypted field and the other parts of the document record from the search software, and the search proxy decrypts the field to reproduce the original document record.