Universal file packager for use with an interoperable keychest

摘要

There is provided a system and method for a universal file packager for use with an interoperable key chest. There is provided a method for distributing media contents to distributors, comprising obtaining a first key, a second key and a content, encrypting the second key using the first key to generate an encrypted second key, encrypting the content using the second key to generate an encrypted content, generating a key information file including the encrypted second key, generating a universal file including the encrypted content and a first network address for a central key repository (CKR), providing the key information file for storage in the CKR, and providing the universal file to the distributors. The universal file can then be provided to users for digital e-commerce and transferred across different distributors with the CKR negotiating key access for granting new interoperable DRM licenses.

主权项

1. A method of distributing media contents, the method comprising:
obtaining a first key, a second key and a content; obtaining content information relating to the content; encrypting the second key using the first key to generate an encrypted second key; encrypting the content using the second key to generate an encrypted content; generating a key information file including the encrypted second key and the content information; generating a universal file including the encrypted content, the content information and a first network address for a central key repository (CKR); providing the universal file to one or more distributors from a source other than the CKR; and providing the key information file for storage in the CKR for distribution of the second key by the CKR upon one or more requests sent to the first network address by the one or more distributors.