公开(公告)号：US20180107806A1

公开(公告)日：2018-04-19

申请号：US15841262

申请日：2017-12-13

Applicant: Konica Minolta Laboratory U.S.A., Inc.

Inventor： Rabindra Pathak ,  Kyohei Shiraishi

IPC: G06F21/10

CPC classification number: G06F21/10 ,  G06F21/6218 ,  G06F2221/0728

Abstract: A digital rights management system includes two digital rights management servers (RMS servers) connected to a client computer. The two RMS servers implement different but related digital rights management (DRM) policies, with the first RMS server implementing conventional DRM policies and the second RMS server implementing extended DRM policies. An application program on the client computer interacts with a document on the client computer, and communicates with the first RMS server to obtain access authorization for the document. A plug-in program in the client computer cooperates with the application program, and communicates with the second RMS server to obtain additional access authorization for the document. Access to the document is granted when both RMS servers grant access to the document. This achieves extended digital rights management control which can provide a more flexible access control than that provided by existing DRM systems.

公开(公告)号：US09716693B2

公开(公告)日：2017-07-25

申请号：US14543871

申请日：2014-11-17

Applicant: KONICA MINOLTA LABORATORY U.S.A., INC.

Inventor： Kyohei Shiraishi ,  Rabindra Pathak

IPC: H04L29/06 ,  G06F21/10

CPC classification number: H04L63/0428 ,  G06F21/10 ,  G06F2221/0724 ,  H04L63/20 ,  H04L2463/101

Abstract: A digital rights management (DRM) method for protecting emails can apply different protection policies to different components of an email such as the message body and the attached digital files. While an email application of the client encrypts the entire email document including both the message and the attachments, a plugin module on the client obtains user input regarding the DRM policies to be applied to individual attachments and then transmits the encrypted email along with the information about the DRM policies for the individual attachments to a digital rights management server. The server first decrypts the entire email document, then applies the user-specified DRM policies to the attachments individually. The server re-composes an email and attaches the individually protected attachments, and transmits the email to the exchange server.