Cloud computing has developed progressively prevalent for data owners to outsource their data to public cloud servers while consenting data users to reclaim this data. For isolation disquiets, a secure rifle over encrypted cloud data has stirred numerous research mechanisms underneath the particular owner model. Conversely, most cloud servers in practice do not just assist one owner, as an alternative, their sustenance gives multiple owners to share the assistances carried by cloud computing. In this proficient and confidentiality-Preserving Multi-Keyword Ranked Search over Encrypted Cloud Data, new schemes to deal with Privacy preserving Ranked Multi-keyword Search in a Multi-owner model (PRMSM) has been introduced. To facilitate cloud servers to execute secure search without knowing the actual data of both keywords and trapdoors, we thoroughly build a novel secure search protocol. To rank the search results and domain the privacy of relevance scores amongst keywords and files. To thwart the assailants from snooping secret keys and fantasizing to be legal data users submitting pursuits, a novel dynamic secret key generation protocol and a new data user authentication protocol is discussed.