There are two categories of searchable encryption schemes: symmetric encryption with keyword search
and public key encryption with keyword search
Unfortunately, keyword search
was doomed to failure by the permanently ambiguous nature of its raw material: language.
It is an all-in-one search engine optimization (SEO) tool offering a wide array of functionality across ad-hoc keyword search
, ongoing search position monitoring, crawling, custom limits, on-site training and other add-on features.
The first case initially involved one million disclosure documents, which was cut to 660,000 after a standard keyword search
. Then the use of this innovative technology enabled Muckle to reduce that number down by more than 90% to 35,000.
For example, a keyword search
of 'pictures of pizza' will show photos from friends and public results that feature pizza in them, be it ad, group photos, or memes.
However, none of the schemes [4-6, 24] support conjunctive keyword search
First, the searchable encryption schemes should support multi-keyword search, and provide the same user experience as searching in Google search with different keywords; single keyword search
is far from satisfactory by only returning very limited and inaccurate search results.
The basic keyword search
displays content of interest to children.
Even if the user does not get the precise content desired as demonstrated by the keyword search
, the opportunity to offer alternative resources or at least an explanation as to why something is not part of the library's collection will hopefully provide the user with a more positive experience than a "no results" message.
To resolve this problem, the notion of the public key encryption with keyword search
(PEKS) was proposed by Boneh et al.
Concept searching: In a sense the next-generation keyword search
, concept searching looks for documents related to the query by subject matter, even if they don't have hits on the search terms.