公开(公告)号：US20140115124A1

公开(公告)日：2014-04-24

申请号：US14145481

申请日：2013-12-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Xu

IPC: H04L12/24

CPC classification number: H04L41/509 ,  H04L65/1083 ,  H04L65/4084 ,  H04L65/80 ,  H04L67/2842

Abstract: A method, an apparatus and a system for downloading a file in a content delivery network are provided. A sending rate of a file fragment is determined according to a requirement for playing the file fragment, the sending rate of the file fragment is carried in a request message for downloading the file fragment, so that a content source server or an upper-level cache server can send the file fragment at the sending rate of the file fragment carried in the request message, which solves the problem in the prior art that, the upper-level cache server or the content source server fails to meet diversified downloading requirements of a lower-level cache server, and the lower-level cache server is capable of providing a flexible streaming service for a terminal apparatus, improving user experience.

Abstract translation: 提供了一种用于在内容传送网络中下载文件的方法，装置和系统。 根据播放文件片段的要求确定文件片段的发送速率，在用于下载文件片段的请求消息中携带文件片段的发送速率，从而内容源服务器或上级缓存 服务器可以以请求消息中携带的文件片段的发送速率发送文件片段，解决了现有技术中上级缓存服务器或内容源服务器不能满足较低级别的多种下载要求的问题 高级缓存服务器，下级缓存服务器能够为终端设备提供灵活的流服务，从而提高用户体验。

公开(公告)号：US20130156188A1

公开(公告)日：2013-06-20

申请号：US13687968

申请日：2012-11-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Xu ,  Xiaoxin Wu

IPC: H04L9/08 ,  H04L9/28

CPC classification number: H04L9/0861 ,  H04L9/0827 ,  H04L9/3073 ,  H04L2209/76

Abstract: A proxy-based encryption method includes generating, according to a private key of a sending end and a public key of a receiving end, proxy keys that correspond to at least two proxy servers, respectively. The number of the proxy keys is equal to the number of the proxy servers. The method further includes sending encrypted ciphertexts and the proxy keys that correspond to the at least two proxy servers respectively to the at least two proxy servers, respectively, so that the at least two proxy servers re-encrypt the encrypted ciphertexts according to the corresponding proxy keys.

Abstract translation: 基于代理的加密方法包括根据发送端的私钥和接收端的公开密钥分别生成与至少两个代理服务器对应的代理密钥。 代理密钥的号码等于代理服务器的号码。 该方法还包括分别向至少两个代理服务器发送加密的密文和对应于至少两个代理服务器的代理密钥，使得至少两个代理服务器根据相应的代理对加密的密文重新加密 钥匙