Abstract : This report describes the IARPA sponsored private information retrieval (PIR) project. The approach is based on the keyword-oblivious transfer cryptographic primitive, which allows a client and server to negotiate an exchange of data based on a keyword not learned by the server. Although no protocols exist that allow this primitive to scale to the magnitude needed by PIR, we utilize a semi-trusted third party to meet the stated requirements. We evaluated this approach against a 60 gigabyte database and a set of queries provided by the MIT-LL test team. This approach exceeded the given performance requirements, with most of the performance penalty coming from encryption and decryption, rather than keyword-oblivious transfer.