公开(公告)号：US20100125736A1

公开(公告)日：2010-05-20

申请号：US12645358

申请日：2009-12-22

申请人： JAE-SEOK JANG ,  SEOG-CHEON JEON ,  HYUNG-SIK KIM

发明人： JAE-SEOK JANG ,  SEOG-CHEON JEON ,  HYUNG-SIK KIM

IPC分类号： G06F17/00

CPC分类号： G06F21/10 ,  H04L9/0822 ,  H04L9/14 ,  H04L9/30 ,  H04L63/06 ,  H04L63/083 ,  H04L63/0876

摘要： Disclosed is a content sharing method and system using an external memory. A method for transmitting encrypted contents to an external memory device list includes receiving a device list and public keys for devices, encrypting a domain key by using a public key to generate at least one device domain key, and transmitting the device domain key to the external memory. The method for performing encrypted contents further includes checking a public key of a device, extracting a device domain key corresponding to a public key checked by at least one device domain key stored in an external memory, decoding the extracted device domain key, decoding the encrypted contents by using the decoded device domain key, and performing the decoded encrypted contents. According to the present invention, since a single piece of contents stored in an external memory is reproducible by a plurality of devices, the existing problem of repeatedly settling the single piece of contents is solved and external memory resources are efficiently used.

摘要翻译： 公开了使用外部存储器的内容共享方法和系统。 用于将加密内容发送到外部存储器件列表的方法包括：接收设备的设备列表和公钥，使用公钥加密域密钥以生成至少一个设备域密钥，以及将设备域密钥发送到外部 记忆。 用于执行加密内容的方法还包括检查设备的公开密钥，提取对应于由存储在外部存储器中的至少一个设备域密钥检查的公开密钥的设备域密钥，对所提取的设备域密钥进行解码，解码加密的 通过使用解码的设备域密钥进行内容，并且执行解码的加密内容。 根据本发明，由于存储在外部存储器中的单个内容可由多个设备再现，因此解决了重复设置单个内容的现有问题，并且有效地使用了外部存储器资源。