CN107277591A - A kind of method that pattern of fusion set top box is encrypted by OTG modes - Google Patents
A kind of method that pattern of fusion set top box is encrypted by OTG modes Download PDFInfo
- Publication number
- CN107277591A CN107277591A CN201710456189.9A CN201710456189A CN107277591A CN 107277591 A CN107277591 A CN 107277591A CN 201710456189 A CN201710456189 A CN 201710456189A CN 107277591 A CN107277591 A CN 107277591A
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- China
- Prior art keywords
- top box
- set top
- otg
- data
- encrypted
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42646—Internal components of the client ; Characteristics thereof for reading from or writing on a non-volatile solid state storage medium, e.g. DVD, CD-ROM
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/629—Protecting access to data via a platform, e.g. using keys or access control rules to features or functions of an application
Abstract
The present invention provides a kind of method that pattern of fusion set top box is encrypted by OTG modes, is included in setting USB OTG control chips in pattern of fusion Intelligent set top box；Exterior PC instrument or Android device terminal obtain the Unique Chip ID of every Intelligent set top box box, and then corresponding chip id is encrypted by outside AES；The data after the completion of encryption are sent into the sequence of Intelligent set top box by OTG to guide in UBOOT, the data after encryption, by being converted into one section of HEX data, then write this segment data of encryption in OTP region by writing efuse functions in UBOOT；By the system kernel of Intelligent set top box read in CPU it is encrypted after data and chip id；Middleware by decipherment algorithm decrypt by the efuse nodes and chipid nodes of system kernel be transmitted through come data; pass through USB OTG communication modes; external equipment is set to be protected by OTG communications to DVB Partial encryptions in OTT+DVB boxes; avoid cipher mode cumbersome; encryption is dangerous, makes to be improved on production cost and efficiency of research and development.
Description
[technical field]
The present invention relates to set top box encryption method technical field, more particularly to a kind of encryption safe performance is high and mode is simple
The method that pattern of fusion set top box is encrypted by OTG modes.
[background technology]
Many OTT set-top box are circulated extensively on the market at present, however as consumption upgrading and people's actual demand
Continuous enhancing, in traditional OTT set-top box integrated DVB business turn into important developing direction, the integrated DVB industry on OTT
Being engaged in, each producer is different, and the mode of realization also has difference, in order to protect the DVB modules in OTT+DVB boxes, some set top boxes
That DVB contents are protected by encryption chip mode, also have prevents brush machine by signature scheme, by with upper type to box
The step of son encryption and method also accordingly add cost, in this case it is still possible to not complete enough defence program relative to more complicated
In certain section of program, there is the risk that data are stolen in some private datas, or even whole flash, how using technological innovation,
The purpose of preferably protection DVB module contents is reached, and causes data to be not easy to copy or crack, is technology people in industry
The problem of member often considers.
Based on above mentioned problem, those skilled in the art has carried out substantial amounts of research and development and experiment, from the specific original of set top box
It is improved and improves in terms of reason and composition, and cipher mode method, and achieves preferable achievement.
[content of the invention]
To overcome the problems of prior art, the present invention provides a kind of encryption safe performance height and mode is simply led to
Cross the method that pattern of fusion set top box is encrypted OTG modes.
The scheme that the present invention solves technical problem is to provide and a kind of by OTG modes pattern of fusion set top box is encrypted
Method, comprises the following steps,
S1：USB OTG control chips are set in pattern of fusion Intelligent set top box, and the Intelligent set top box passes through OTG
Signal connecting line connects exterior PC instrument or Android device terminal, and Intelligent set top box and exterior PC instrument or Android device terminal are logical
Letter interconnection, sends and receives packet；
S2：Exterior PC instrument or Android device terminal obtain the Unique Chip ID, Ran Houtong of every Intelligent set top box box
Outside AES is crossed corresponding chip id is encrypted；
S3：Data after the completion of being encrypted in step S2 are guided into UBOOT by the OTG sequences for being sent to Intelligent set top box
In, the data after encryption in UBOOT by being converted into one section of HEX data, then by writing efuse functions by this section of encryption
In data write-in OTP region；This OTP region data erasable can not cannot be rewritten after writing successfully；
S4：By the system kernel of Intelligent set top box read in CPU it is encrypted after data and chip id, middleware passes through
Efuse data and chip id that driving is encapsulated are called, decipherment algorithm is added in the SO storehouses of DVB playing modules in middleware；
S5：Middleware by decipherment algorithm decrypt by the efuse nodes and chipid nodes of system kernel be transmitted through come number
According to, go to contrast chip id by the data after decryption, the successful decryption if the data after decryption are identical with chip id, and
DVB applications just can normally start, normal play related-program；Examine obstructed if the data after decryption are different with chip id
Cross, DVB applications can not start.
Preferably, in the step S2, the unique ID of chip that exterior PC instrument or Android device terminal-pair are transmitted enters
Row base64 AES encryptions.
Preferably, in the step S2, exterior PC instrument or Android device terminal-pair Intelligent set top box OTP region are added
Close process is that, by obtaining chipid, the chipid is the unique sequence number of each chip.
Preferably, the exterior PC instrument or Android device terminal are communicated by OTG is responsible for initialization data communication, goes to obtain
Take various descriptors and configuration equipment.
Preferably, in the step S3, an one-time write storage is embedded with Intelligent set top box cassette interior chip
Region (One Time Program Memery, OTP).
Preferably, the Intelligent set top box includes USB interfaces and USB OTG connectors.
Preferably, the system configuration of the Android device terminal is higher than Android 6.0.
Preferably, the exterior PC instrument is set according to Intelligent set top box end vendorid and productid, pass through
Inftool installs OTG drivings.
Compared with prior art, a kind of method that pattern of fusion set top box is encrypted by OTG modes of the present invention passes through
USB OTG communication modes, make external equipment be protected by OTG communications to DVB Partial encryptions in OTT+DVB boxes, it is to avoid encryption
Mode is cumbersome, and encryption is dangerous, makes to be improved on production cost and efficiency of research and development.The present invention is first by Intelligent set top box
Middle setting USB OTG control chips, set top box connects exterior PC instrument or Android device by OTG lines, makes Intelligent set top box
With exterior PC instrument communications, packet is sent and received, by obtaining unique ID of every box, then passes through outside encryption
Chip id is encrypted algorithm, encryption one piece of data is write in chip OTP region, the enhanced security feature of set-top-box chip
It is exactly to be embedded in an one-time write storage region in the chips, can not changes and wipe by encrypting this region, it is secondly logical
Go to obtain the data after encrypting in OTP in the DVB SO storehouses for crossing encapsulation, the data encrypted in OTP by decrypting go to judge that DVB is
Whether no broadcasting or application open, wherein the external tool used needs the protection of professional, the external tool used is same
When be also required to authorize could operate, so as to add the security of encryption data.
[brief description of the drawings]
Fig. 1 is a kind of schematic flow sheet for the method that pattern of fusion set top box is encrypted by OTG modes of the present invention.
[embodiment]
To make the purpose of the present invention, technical scheme and advantage are more clearly understood, below in conjunction with drawings and Examples, to this
Invention is further elaborated.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, not
For limiting this invention.
Referring to Fig. 1, a kind of method that pattern of fusion set top box is encrypted by OTG modes of the present invention includes following step
Suddenly,
S1：USB OTG control chips are set in pattern of fusion Intelligent set top box, and the Intelligent set top box passes through OTG
Signal connecting line connects exterior PC instrument or Android device terminal, and Intelligent set top box and exterior PC instrument or Android device terminal are logical
Letter interconnection, sends and receives packet；
S2：Exterior PC instrument or Android device terminal obtain the Unique Chip ID, Ran Houtong of every Intelligent set top box box
Outside AES is crossed corresponding chip id is encrypted；
S3：Data after the completion of being encrypted in step S2 are guided into UBOOT by the OTG sequences for being sent to Intelligent set top box
In, the data after encryption in UBOOT by being converted into one section of HEX data, then by writing efuse functions by this section of encryption
In data write-in OTP region；This OTP region data erasable can not cannot be rewritten after writing successfully；
S4：By the system kernel of Intelligent set top box read in CPU it is encrypted after data and chip id, middleware passes through
Efuse data and chip id that driving is encapsulated are called, decipherment algorithm is added in the SO storehouses of DVB playing modules in middleware；
S5：Middleware by decipherment algorithm decrypt by the efuse nodes and chipid nodes of system kernel be transmitted through come number
According to, go to contrast chip id by the data after decryption, the successful decryption if the data after decryption are identical with chip id, and
DVB applications just can normally start, normal play related-program；Examine obstructed if the data after decryption are different with chip id
Cross, DVB applications can not start.
By USB OTG communication modes, external equipment is set to be protected by OTG communications to DVB Partial encryptions in OTT+DVB boxes
Shield, it is to avoid cipher mode is cumbersome, encryption is dangerous, makes to be improved on production cost and efficiency of research and development.The present invention passes through first
USB OTG control chips are set in Intelligent set top box, and set top box connects exterior PC instrument or Android device by OTG lines,
Make Intelligent set top box and exterior PC instrument communications, send and receive packet, by the unique ID, Ran Houtong that obtain every box
Cross outside AES chip id is encrypted, encryption one piece of data is write in chip OTP region, set-top-box chip
Enhanced security feature be exactly in the chips be embedded in an one-time write storage region, by encrypt this region can not change with
Erasing, secondly by the data gone in the DVB SO storehouses of encapsulation after being encrypted in acquisition OTP, the data encrypted by decrypting in OTP
Go to judge whether DVB plays or using whether opening, wherein the external tool used needs the protection of professional, use
External tool is also required to authorize and could operated simultaneously, so as to add the security of encryption data.
Preferably, in the step S2, the unique ID of chip that exterior PC instrument or Android device terminal-pair are transmitted enters
Row base64 AES encryptions.Encryption data is write by chip OTP region by encryption chip ID.
Preferably, in the step S2, exterior PC instrument or Android device terminal-pair Intelligent set top box OTP region are added
Close process is that, by obtaining chipid, the chipid is the unique sequence number of each chip.
Preferably, the exterior PC instrument or Android device terminal are communicated by OTG is responsible for initialization data communication, goes to obtain
Take various descriptors and configuration equipment.
Preferably, in the step S3, an one-time write storage is embedded with Intelligent set top box cassette interior chip
Region (One Time Program Memery, OTP).
Preferably, the Intelligent set top box includes USB interfaces and USB OTG connectors.
Preferably, the system configuration of the Android device terminal is higher than Android 6.0.
Preferably, the exterior PC instrument is set according to Intelligent set top box end vendorid and productid, pass through
Inftool installs OTG drivings.
This encryption method can be by OTG communication modes by the encrypted data transmission at PC ends to OTT+DVB android set top boxes
In, the instrument or Android end developed by PC ends can be automatically connected by OTG lines with OTT+DVB, obtain chip id (Android system
System requires Android more than 6.0), the chip ID data after encryption is sent by OTG lines, the data after encryption are in intermediate layer DVB
Decrypted in related SO storehouses, and set top box access PC host sides obtain box by receiving the 0x06 orders that box end is sent
The USB descriptors of son, PC ends send the data after encryption by sending 0x35 instructions.
In actual process, by developing an instrument or APK applications, this instrument at PC ends or Android mobile phone end
By OTG connection set top boxes, instrument obtains set top box description information by OTG lines, makes to connect between two equipment, so as to
For interaction data, so that just set top box OTP region can be encrypted, this scheme is by obtaining chipid, and Android
System will ensure that in the version of Android more than 6.0 chipid could be obtained, and this chipid is the unique sequence number of each chip, this energy
Ensure the uniqueness of every set top box, PC instruments or Android end are mainly responsible for initialization data by OTG and communicated, go to obtain
The various descriptors of USB and configuration equipment.Set top box and PC tool ends ends transmit information, two equipment with main frame and slave mode respectively
Between identification, PC ends need according to box end set vendorid and productid, pass through inftool install OTG drive
It is dynamic.
Many encipherment schemes are all to go to be encrypted in a program at present, and wherein mirror image bag is signed, it is generated
File encryption, using encryption chip go encryption, this sample loading mode AES, which is deposited to there may be in a program, cracks encryption file
Or the risk of mirror image bag, and the technology of the present invention is encrypted by external tool end, key is not easy to obtain and cracked, though
So can be by outside serial ports, network mode goes to reach this effect, but some set top boxes are, without serial ports, also easily to receive
The limitation of network, but most of set top boxes band USB port, DVB moulds in set top box are merged the invention provides a kind of to OTT+DVB
The encryption method of block, by OTG communication modes, is sent with receiving OTG packets, USB OTG, which can be realized, not to be had using USB OTG
Data transfer during main frame between equipment and equipment, transmission speed is fast, can not be limited by network, can also by PC ends
By mobile phone, pad goes connection, simple and easy to use, goes encryption DVB applications by this cipher modes of USB OTG, does not only reach
The security of box DVB business, cipher mode is simpler, also enables DVB modules in OTT+DVB set top boxes to be had
Preferably protection.
Compared with prior art, a kind of method that pattern of fusion set top box is encrypted by OTG modes of the present invention passes through
USB OTG communication modes, make external equipment be protected by OTG communications to DVB Partial encryptions in OTT+DVB boxes, it is to avoid encryption
Mode is cumbersome, and encryption is dangerous, makes to be improved on production cost and efficiency of research and development.The present invention is first by Intelligent set top box
Middle setting USB OTG control chips, set top box connects exterior PC instrument or Android device by OTG lines, makes Intelligent set top box
With exterior PC instrument communications, packet is sent and received, by obtaining unique ID of every box, then passes through outside encryption
Chip id is encrypted algorithm, encryption one piece of data is write in chip OTP region, the enhanced security feature of set-top-box chip
It is exactly to be embedded in an one-time write storage region in the chips, can not changes and wipe by encrypting this region, it is secondly logical
Go to obtain the data after encrypting in OTP in the DVB SO storehouses for crossing encapsulation, the data encrypted in OTP by decrypting go to judge that DVB is
Whether no broadcasting or application open, wherein the external tool used needs the protection of professional, the external tool used is same
When be also required to authorize could operate, so as to add the security of encryption data.
The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present invention
Spirit and principle within the modifications, equivalent substitutions and improvements made etc., should be included in the claim protection model of the present invention
Within enclosing.
Claims (8)
1. a kind of method that pattern of fusion set top box is encrypted by OTG modes, it is characterised in that：Comprise the following steps,
S1：USB OTG control chips are set in pattern of fusion Intelligent set top box, and the Intelligent set top box passes through OTG signals
Connecting line connects exterior PC instrument or Android device terminal, and Intelligent set top box and exterior PC instrument or Android device terminal communication are mutual
Connection, sends and receives packet；
S2：Exterior PC instrument or Android device terminal obtain the Unique Chip ID of every Intelligent set top box box, then by outer
Corresponding chip id is encrypted the AES in portion；
S3：The data after the completion of encrypting in step S2 are sent into the sequence of Intelligent set top box by OTG to guide in UBOOT, plus
Data after close in UBOOT by being converted into one section of HEX data, then by writing efuse functions by this segment data of encryption
Write in OTP region；This OTP region data erasable can not cannot be rewritten after writing successfully；
S4：By the system kernel of Intelligent set top box read in CPU it is encrypted after data and chip id, middleware is by calling
The efuse data and chip id of encapsulation are driven, decipherment algorithm is added in the SO storehouses of DVB playing modules in middleware；
S5：Middleware is decrypted by the efuse nodes and chipid nodes of system kernel are transmitted through the data come by decipherment algorithm, logical
The data crossed after decrypting go to contrast chip id, the successful decryption if the data after decryption are identical with chip id, and DVB should
With just can normally starting, normal play related-program；Examine and do not pass through if the data after decryption are different with chip id,
DVB applications can not start.
2. a kind of method that pattern of fusion set top box is encrypted by OTG modes as claimed in claim 1, its feature exists
In：In the step S2, the unique ID of chip that exterior PC instrument or Android device terminal-pair are transmitted carries out base64 encryptions
Algorithm for encryption processing.
3. a kind of method that pattern of fusion set top box is encrypted by OTG modes as claimed in claim 1 or 2, its feature
It is：In the step S2, the process that exterior PC instrument or Android device terminal-pair Intelligent set top box OTP region are encrypted is
By obtaining chipid, the chipid is the unique sequence number of each chip.
4. a kind of method that pattern of fusion set top box is encrypted by OTG modes as claimed in claim 1, its feature exists
In：The exterior PC instrument or Android device terminal are communicated by OTG is responsible for initialization data communication, goes to obtain various descriptors
With configuration equipment.
5. a kind of method that pattern of fusion set top box is encrypted by OTG modes as claimed in claim 1, its feature exists
In：In the step S3, an one-time write storage region (One Time is embedded with Intelligent set top box cassette interior chip
Program Memery, OTP).
6. a kind of method that pattern of fusion set top box is encrypted by OTG modes as claimed in claim 1, its feature exists
In：The Intelligent set top box includes USB interfaces and USB OTG connectors.
7. a kind of method that pattern of fusion set top box is encrypted by OTG modes as described in claim 1 or 6, its feature
It is：The system configuration of the Android device terminal is higher than Android 6.0.
8. a kind of method that pattern of fusion set top box is encrypted by OTG modes as claimed in claim 1, its feature exists
In：Vendorid and productid that the exterior PC instrument is set according to Intelligent set top box end, OTG is installed by inftool
Driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710456189.9A CN107277591B (en) | 2017-06-16 | 2017-06-16 | Method for encrypting fusion type set top box in OTG mode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710456189.9A CN107277591B (en) | 2017-06-16 | 2017-06-16 | Method for encrypting fusion type set top box in OTG mode |
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| CN107277591A true CN107277591A (en) | 2017-10-20 |
| CN107277591B CN107277591B (en) | 2020-04-21 |
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| CN111310206A (en) * | 2020-02-12 | 2020-06-19 | 腾讯科技（深圳）有限公司 | Data encryption method, node equipment and storage medium |
| CN113343245A (en) * | 2021-05-27 | 2021-09-03 | 长沙海格北斗信息技术有限公司 | Chip secure starting method, secure chip and receiver thereof |
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| Publication number | Publication date |
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| CN107277591B (en) | 2020-04-21 |
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