Patent ID: 8782803

Claim:
A method of encrypting a derivative work using a cipher created from digital sources used to create the derivative work in order to ensure a legal distribution of the derivative work through public channels, comprising: obtaining machine-readable input from a creator of the derivative work that provides an identification of each digital source used to create the derivative work; extracting source data from each of the digital sources used to create the derivative work; locating a source data sequence for each of the extracted source data that is unique within a predetermined range of each of the extracted source data; saving the source data sequence for each of the extracted source data as a marker in a header section created for a derivative-encrypted work; selecting a portion of the source data following the source data sequence for each of the extracted source data; creating the respective encryption keys by processing the selected portion for each of the extracted source data; combining the respective encryption keys to create the cipher; encrypting the derivative work using the cipher to create the derivative-encrypted work; storing the derivative-encrypted work on a public server; and making the derivative-encrypted work available on the public server.