Abstract: A method of sending content comprising receiving a membership request from a client at an anonymizer, the membership request being encrypted with a public key of the anonymizer, generating a table from a prefix-free source coding scheme with a full binary tree, a pseudonym range, and a master key, sending the table, the pseudonym range, and the master key, all encrypted with a public key of the client, receiving a content request with an encoded content name, the content request being encoded using the table, a pseudonym from the pseudonym range, and the master key, decoding the content name of the content request using the pseudonym, the table, and the master key, retrieving content corresponding to the content name, and sending the content and the encoded content name. Secure information sharing is also provided for.