CN112312172A - 一种一体机找回HDCP Key的方法 - Google Patents

一种一体机找回HDCP Key的方法 Download PDF

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CN112312172A
CN112312172A CN202011178513.3A CN202011178513A CN112312172A CN 112312172 A CN112312172 A CN 112312172A CN 202011178513 A CN202011178513 A CN 202011178513A CN 112312172 A CN112312172 A CN 112312172A
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hdcp key
file
machine
hdcp
local
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谭贵勇
彭和平
劳冠华
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Guangzhou Lango Electronic Science and Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/254—Management at additional data server, e.g. shopping server, rights management server
    • H04N21/2541—Rights Management
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00—Arrangements for software engineering
    • G06F8/60—Software deployment
    • G06F8/61—Installation
    • G06F8/63—Image based installation; Cloning; Build to order
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/26606—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/26613—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing keys in general
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4627—Rights management associated to the content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/633—Control signals issued by server directed to the network components or client
    • H04N21/6332—Control signals issued by server directed to the network components or client directed to client
    • H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
    • H04N21/63345—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key by transmitting keys
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/637—Control signals issued by the client directed to the server or network components
    • H04N21/6377—Control signals issued by the client directed to the server or network components directed to server
    • H04N21/63775—Control signals issued by the client directed to the server or network components directed to server for uploading keys, e.g. for a client to communicate its public key to the server
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

本发明涉及通信技术领域，提供一种一体机找回HDCP Key的方法，包括如下步骤：获取本机的烧录方案、MAC地址；通过HTTP协议向服务器发送HDCP Key文件请求，所述HDCP Key文件前段字符与所述本机的烧录方案、MAC地址一致；接收到所述HDCP Key文件后，烧录至本机系统内；其中，在所述服务器内提前备份有本机的HDCP Key文件；本发明解决了存储在EMMC中的HDCP Key会因数据清除而丢失，损坏，导致一体机等播放设备无法正常播放受保护的片源的问题。

Description

一种一体机找回HDCP Key的方法
技术领域
本发明涉及通信技术领域，具体涉及一种一体机找回HDCP Key的方法。
背景技术
HDCP是High-bandwidth Digital Content Protection的缩写，中文可称作“高带宽数码内容保护”。HDCP技术是由好莱坞与半导体界巨人Intel合作开发，它可以实际运用在显卡、DVD播放机等传输端，以及显示器、电视机、投影机的接收端之间。是高清电影、电视节目的重要反盗版技术，不支持HDCP协议的显示器无法正常播放有版权的高清节目。
支持HDCP保护技术的播放设备或是显示设备上，均会拥有一个独一无二的HDCP密钥-HDCP key(Secret Device Keys)，这密钥是使用40组56bit的数组密码组成，很多方案将这组key直接存储在EMMC(Embedded Multi Media Card，内嵌式存储器)中，由于EMMC里面的数据都会存在被清除的问题，HDCP key同样也会被丢失，损坏，导致一体机等播放设备无法正常播放受保护的片源。
发明内容
解决的技术问题
针对现有技术的不足，本发明提供了一种一体机找回HDCP Key的方法，解决了存储在EMMC中的HDCP Key会因数据清除而丢失，损坏，导致一体机等播放设备无法正常播放受保护的片源的问题。
技术方案
为实现以上目的，本发明通过以下技术方案予以实现：
一种一体机找回HDCP Key的方法，包括如下步骤：
获取本机的烧录方案、MAC地址；
通过HTTP协议向服务器发送HDCP Key文件请求，所述HDCP Key文件前段字符与所述本机的烧录方案、MAC地址一致；
接收到所述HDCP Key文件后，烧录至本机系统内；
其中，在所述服务器内提前备份有本机的HDCP Key文件。
更进一步地，将本机的HDCP Key文件备份至服务器的步骤为：访问本机HDCP Key的存放地址，获取自身的HDCP Key；将所述HDCP Key以二进制文件保存；将二进制的HDCPKey文件上传至服务器。
更进一步地，所述二进制文件为后缀名为bin的文件，所述文件的文件名先后包括：烧录方案、Key、版本、MAC地址，其中版本包括1.4和2.2两个版本。
更进一步地，在将HDCP Key文件后烧录至本机系统内时，通过本机内预留的烧录通讯协议接口完成烧录操作。
有益效果
本发明提供了一种一体机找回HDCP Key的方法，与现有公知技术相比，本发明的具有如下有益效果：
本发明通过将一体机本机系统的Key与本机芯片的烧录方案以及本机的MAC地址，组成一个二进制HDCP Key文件，其中，利用本机的MAC地址唯一标识能力，通过将HDCP Key文件备份至服务器，在需要找回时，通过发送HTTP协议向服务器获取对应的本机HDCP Key文件，并且在记录有芯片的烧录方案的情况下，方便将Key文件后，烧录至本机系统内，使得一体机可以正常播放受保护的片源，提高。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明的找回HDCP Key的方法流程图；
图2为本发明的HDCP Key备份示意图；
图3为本发明的HDCP Key找回示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例：
本实施例的一种一体机找回HDCP Key的方法，参照图1，包括如下步骤：
步骤1：获取本机的烧录方案、MAC地址；
步骤2：通过HTTP协议向服务器发送HDCP Key文件请求，HDCP Key文件前段字符与本机的烧录方案、MAC地址一致；
步骤3：接收到HDCP Key文件后，烧录至本机系统内；
在服务器内提前备份有本机的HDCP Key文件，本实施例中优选洗将本机的HDCPKey文件备份至服务器的步骤为：参照图2，访问本机HDCP Key的存放地址，获取自身的HDCPKey；将HDCP Key以二进制文件保存；将二进制的HDCP Key文件上传至服务器。
其中，由于HDCP KEY目前都是方案商自主烧录，因此烧录的原始文件的Key开发商可以处理为HDCP Key文件，可以通过外部存储器将HDCP Key进行保存，并上传到服务器，也是较为方便地用于将HDCP Key文件进行备份。
本实施例中的二进制文件为后缀名为bin的文件，文件的文件名先后包括：烧录方案、Key、版本、MAC地址，其中版本包括1.4和2.2两个版本。HDCP Key文件命名为：方案-Key-1.4-MAC地址.bin，或方案-Key-2.2-MAC地址.bin。
找回方法：参照图3，通过本机芯片的烧录方案以及本机的MAC地址，组成一个二进制HDCP Key文件，其中，利用本机的MAC地址唯一标识能力，在需要找回时，通过发送HTTP协议向服务器获取对应的本机HDCP Key文件。
烧录方式：利用在HDCP Key文件记录有芯片的烧录方案，将HDCP Key文件后烧录至本机系统内时，通过本机内预留的烧录通讯协议接口完成烧录操作。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (4)

1.一种一体机找回HDCP Key的方法，其特征在于，包括如下步骤：
获取本机的烧录方案、MAC地址；
通过HTTP协议向服务器发送HDCP Key文件请求，所述HDCP Key文件前段字符与所述本机的烧录方案、MAC地址一致；
接收到所述HDCP Key文件后，烧录至本机系统内；
其中，在所述服务器内提前备份有本机的HDCP Key文件。
2.根据权利要求1所述的一种一体机找回HDCP Key的方法，其特征在于，将本机的HDCPKey文件备份至服务器的步骤为：
访问本机HDCP Key的存放地址，获取自身的HDCP Key；
将所述HDCP Key以二进制文件保存；
将二进制的HDCP Key文件上传至服务器。
3.根据权利要求2所述的一种一体机找回HDCP Key的方法，其特征在于，所述二进制文件为后缀名为bin的文件，所述文件的文件名先后包括：烧录方案、Key、版本、MAC地址，其中版本包括1.4和2.2两个版本。
4.根据权利要求1所述的一种一体机找回HDCP Key的方法，其特征在于，在将HDCP Key文件后烧录至本机系统内时，通过本机内预留的烧录通讯协议接口完成烧录操作。
CN202011178513.3A 2020-10-29 2020-10-29 一种一体机找回HDCP Key的方法 Pending CN112312172A (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101719357A (zh) * 2009-11-27 2010-06-02 福建捷联电子有限公司 一种液晶显示器hdcp离线烧录系统
CN105847005A (zh) * 2016-03-14 2016-08-10 美的集团股份有限公司 加密装置和方法
CN106229007A (zh) * 2016-08-09 2016-12-14 广州视源电子科技股份有限公司 Hdcp key发送方法、烧录方法及装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101719357A (zh) * 2009-11-27 2010-06-02 福建捷联电子有限公司 一种液晶显示器hdcp离线烧录系统
CN105847005A (zh) * 2016-03-14 2016-08-10 美的集团股份有限公司 加密装置和方法
CN106229007A (zh) * 2016-08-09 2016-12-14 广州视源电子科技股份有限公司 Hdcp key发送方法、烧录方法及装置

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