A computer system implements a peer-to-peer network that permits peer-to-peer data transfers with privacy with respect to the identities of requestor peers, provider peers and the requested data. The peer-to-peer network encrypts each communication among peers, and each message, whether a request or response, is transmitted through at least one intermediate peer. Each message received by any peer in the system appears the same to each peer in the sense that the message does not reveal how many intermediate peers have processed or will process the message. Further, a source of content is not revealed as a source; and a requestor of content is not revealed as a requestor.