Abstract: Rather than downloading each content document on demand from the publisher location to the user site, at the publisher location, each content document is encrypted and then multiple encrypted documents are assembled into a distribution archive that is itself encrypted with a scheduled key. The distribution archive is then downloaded into a content server at the user site. When the content server receives the distribution archive, it decrypts the archive file and unpacks the encrypted documents. The scheduled key used to decrypt an archive file is included with an archive file that was sent previously to the user site in accordance with the subscription service. The scheduled key to decrypt the first archive file sent to the user is sent from the publisher to the user over a communication channel different from the communication channel used to send the archive file from the publisher to the user.

Abstract: Rather than downloading each content document on demand from the publisher location to the user site, at the publisher location, each content document is encrypted and then multiple encrypted documents are assembled into a distribution archive that is itself encrypted with a scheduled key. The distribution archive is then downloaded into a content server at the user site. When the content server receives the distribution archive, it decrypts the archive file and unpacks the encrypted documents. The scheduled key used to decrypt an archive file is included with an archive file that was sent previously to the user site in accordance with the subscription service. The scheduled key to decrypt the first archive file sent to the user is sent from the publisher to the user over a communication channel different from the communication channel used to send the archive file from the publisher to the user.

Abstract: In a secure content distribution system, the text is extracted and scrambled in content documents that include text. The scrambled content is made available for indexing by conventional search engines but is not available as plain text and thus is kept secure. The scrambling process breaks a text stream derived from the content document into two to five word phrases, randomizes the phrases and creates a text file from the randomized stream. Third party search engines are allowed to index the scrambled file so that search algorithms that search on particular words or phrases produce nearly the same number of hits as with the plain text file. A web server that provides the content returns either the scrambled content to a search engine or a link to the publisher by examining a user agent parameter that accompanies a content request. Alternatively the scrambled content also includes a script routine that links to the publisher.