发明名称 System and method for securing the life-cycle of user domain rights objects
摘要 In a method for enabling support for backwards compatibility in a User Domain, in one of a Rights Issuer (RI) and a Local Rights Manager (LRM), a Rights Object Encryption Key (REK) and encrypted REK are received from an entity that generated a User Domain Authorization for the one of the RI and the LRM and the REK is used to generate a User Domain Rights Object (RO) that includes the User Domain Authorization and the encrypted REK.
申请公布号 US9430620(B2) 申请公布日期 2016.08.30
申请号 US201414551772 申请日期 2014.11.24
申请人 Google Technology Holdings LLC 发明人 Kravitz David W.
分类号 G06F17/30;G06F21/10;H04L29/06;H04L9/08;H04L9/32;G11B20/00 主分类号 G06F17/30
代理机构 Fenwick & West LLP 代理人 Fenwick & West LLP
主权项 1. A method, comprising: receiving, in one of a rights issuer (RI) or a local rights manager (LRM), a rights object encryption key (REK) and an encrypted REK from an entity, wherein the entity generates the REK and, to facilitate maintaining security with regard to a user domain key, the one of the RI or the LRM is not permitted access to the user domain key; and based at least in part on the REK, generating a user domain rights object (RO) that includes a user domain authorization and the encrypted REK, wherein the user domain authorization identifies a user domain and the one of the RI or the LRM, the user domain authorization is associated with the user domain and the user domain key, the encrypted REK is derived from the REK by using the user domain key, and the generated user domain rights object is communicated to a device via one of a SCE-conformant DRM Agent, an RO acquisition protocol, and an out-of-band manner.
地址 Mountain View CA US