CN105812877A - Set-top box starting method and system based on Chip ID - Google Patents
Set-top box starting method and system based on Chip ID Download PDFInfo
- Publication number
- CN105812877A CN105812877A CN201610166525.1A CN201610166525A CN105812877A CN 105812877 A CN105812877 A CN 105812877A CN 201610166525 A CN201610166525 A CN 201610166525A CN 105812877 A CN105812877 A CN 105812877A
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- top box
- set top
- chipid
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- ciphertext
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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
- H04N21/42684—Client identification by a unique number or address, e.g. serial number, MAC address, socket ID
-
- 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
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4432—Powering on the client, e.g. bootstrap loading using setup parameters being stored locally or received from the server
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Power Engineering (AREA)
- Storage Device Security (AREA)
Abstract
The invention provides a set-top box starting method based on a Chip ID, comprising the steps of allocating, by a PC (Personal Computer) end, a unique serial number (SN) to each set-top box, generating a plaintext a from the SN of the set-top box via a private key and an encryption algorithm, and encrypting the plaintext to generate a ciphertext; after the set-top box is started, entering, by the set-top box, a boot program booter, decrypting the ciphertext to obtain a plaintext c, and then generating a plaintext d from the SN of the set-top box via the private key and the encryption algorithm; comparing the plaintext c with the plaintext d, and if consistent, starting the set-top box; otherwise, not starting the set-top box. The invention further provides a set-top box starting system based on a Chip ID. The method and the system greatly improve the security of set-top box software, and are convenient to implement.
Description
Technical field
The present invention relates to a kind of set top box starting method based on ChipID and system.
Background technology
At present, most of Set Top Box does not account for safety and the software copyright problem of set-top box software, such as hacker attacks plays the system of front end, then illegal software is intercutted in network, cause that the Set Top Box at net is upgraded to illegal software, consequently, it is possible to cause the tremendous economic of operator to lose, even cause bad political fallout；Also has a kind of situation, mono-for hardware BOM and production software are given OEM factory by Set Top Box producer, if passing to other Set Top Box producers on hand outside the data that OEM imprudence is the two most critical, rival just can obtain profit, causes huge economic loss to genuine man.Currently, there is part Set Top Box producer to have the software to oneself to be encrypted, but be likely to need to increase independent hardware module, such as encrypt E2PROM, but add BOM cost simultaneously, be unfavorable for the competition in market.
Summary of the invention
The technical problem to be solved in the present invention, is in that to provide a kind of set top box starting method based on ChipID and system so that the safety of set-top box software is greatly improved, and facilitates implementation.
One of present invention is achieved in that a kind of set top box starting method based on ChipID, specifically includes following steps:
Step 1, PC end give every Set Top Box one unique serial number SN of distribution, by private key and AES, sequence number of set top box SN generates expressly a, and this plain text encryption is generated a ciphertext；
After step 2, Set Top Box electrifying startup, enter bootstrap booter, described ciphertext is decrypted and obtains expressly c, afterwards the serial number SN of Set Top Box is generated a plaintext d by described private key and AES；
Step 3, plaintext c is compared with expressly d, if unanimously, then starter motor top box；No, then not starter motor top box.
Further, described step 1 particularly as follows:
Step 11, PC end give every Set Top Box one unique serial number SN of distribution, after Set Top Box receives this SN, these data are saved on the fixed position of FLASH；
Step 12, Set Top Box read storage SN on a flash, by fixing private key KEY-1 and AES A by the serial number SN generation expressly a of Set Top Box；
Step 13, reading machine top box ChipID, with ChipID as KEY-2, by AES B, plaintext a is generated the ciphertext b of regular length, then ciphertext b is stored the fixed position of FLASH.
Further, described step 2 further particularly as follows:
After step 21, Set Top Box electrifying startup, enter bootstrap booter；
Step 22, booter program read the ChipID and ciphertext b of this Set Top Box from the fixed position of FLASH, using ChipID as KEY-2, by the decipherment algorithm BB corresponding with AES B, ciphertext b are decrypted, and obtain expressly c；
Step 23, read the serial number SN of this Set Top Box from the fixed position of FLASH, then pass through fixing private key KEY-1 and described AES A and the serial number SN of Set Top Box is generated expressly d.
Further, described Set Top Box ChipID is the ChipID of the ChipID of CPU or FLASH chip.
The two of the present invention are achieved in that a kind of Set Top Box based on ChipID starts system, specifically include such as lower module:
Encrypting module, PC end gives every Set Top Box one unique serial number SN of distribution, by private key and AES, sequence number of set top box SN generates expressly a, and this plain text encryption is generated a ciphertext；
Deciphering module, after Set Top Box electrifying startup, enters bootstrap booter, described ciphertext is decrypted and obtains expressly c, afterwards by described private key and AES, the serial number SN of Set Top Box is generated a plaintext d；
Relatively start module, plaintext c is compared with expressly d, if unanimously, then starter motor top box；No, then not starter motor top box.
Further, described encrypting module particularly as follows:
Serial number unit, PC end gives every Set Top Box one unique serial number SN of distribution, after Set Top Box receives this SN, these data is saved on the fixed position of FLASH；
Serial number is unit expressly, and Set Top Box reads storage SN on a flash, by fixing private key KEY-1 and AES A by the serial number SN generation expressly a of Set Top Box；
Plain text encryption unit, the ChipID of reading machine top box, with ChipID as KEY-2, by AES B, plaintext a is generated the ciphertext b of regular length, then ciphertext b is stored the fixed position of FLASH.
Further, described deciphering module further particularly as follows:
Start unit, after Set Top Box electrifying startup, enters bootstrap booter；
Decryption unit, booter program reads the ChipID and ciphertext b of this Set Top Box from the fixed position of FLASH, using ChipID as KEY-2, by the decipherment algorithm BB corresponding with AES B, ciphertext b is decrypted, and obtains expressly c；
Generate expressly unit, read the serial number SN of this Set Top Box from the fixed position of FLASH, then pass through fixing private key KEY-1 and described AES A and the serial number SN of Set Top Box is generated expressly d.
Further, described Set Top Box ChipID is the ChipID of the ChipID of CPU or FLASH chip.
Present invention have the advantage that a kind of set top box starting method based on ChipID of the present invention and system; any hardware module need not be increased, when not increasing any hardware cost; only need to obtain unique ID of the hardware such as CPU or FLASH of Set Top Box; the effectiveness of set-top box software itself is verified; prevent lawless person from illegally copying, effectively protect intellectual property and the economic interests of Set Top Box manufacturer self；It is also prevented from net box by illegal update, it is ensured that the normal operation of operator, the present invention can be more beneficial for the further genralrlization of DTV.
Accompanying drawing explanation
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is that the inventive method performs flow chart.
Fig. 2 is the theory diagram of present system.
Detailed description of the invention
As it is shown in figure 1, the present invention is based on the set top box starting method of ChipID, specifically include following steps:
Step 1, PC end give every Set Top Box one unique serial number SN of distribution, by private key and AES, sequence number of set top box SN generates expressly a, and this plain text encryption generates a ciphertext, described step 1 particularly as follows:
Step 11, PC end give every Set Top Box one unique serial number SN of distribution, after Set Top Box receives this SN, these data are saved on the fixed position of FLASH；
Step 12, Set Top Box read storage SN on a flash, by fixing private key KEY-1 and AES A by the serial number SN generation expressly a of Set Top Box；
Step 13, reading machine top box ChipID, with ChipID as KEY-2, by AES B, plaintext a is generated the ciphertext b of regular length, then ciphertext b is stored the fixed position of FLASH；
After step 2, Set Top Box electrifying startup, enter bootstrap booter, described ciphertext be decrypted and obtain expressly c, afterwards the serial number SN of Set Top Box is generated an expressly d by described private key and AES, described step 2 further particularly as follows:
After step 21, Set Top Box electrifying startup, enter bootstrap booter；
Step 22, booter program read the ChipID and ciphertext b of this Set Top Box from the fixed position of FLASH, using ChipID as KEY-2, by the decipherment algorithm BB corresponding with AES B, ciphertext b are decrypted, and obtain expressly c；
Step 23, read the serial number SN of this Set Top Box from the fixed position of FLASH, then pass through fixing private key KEY-1 and described AES A and the serial number SN of Set Top Box is generated expressly d；
Step 3, plaintext c is compared with expressly d, if unanimously, then starter motor top box；No, then not starter motor top box, described Set Top Box ChipID is the ChipID of the ChipID of CPU or FLASH chip.
As in figure 2 it is shown, the present invention is based on the Set Top Box startup system of ChipID, specifically include such as lower module:
Encrypting module, PC end gives every Set Top Box one unique serial number SN of distribution, by private key and AES, sequence number of set top box SN generates expressly a, and this plain text encryption generates a ciphertext, described encrypting module particularly as follows:
Serial number unit, PC end gives every Set Top Box one unique serial number SN of distribution, after Set Top Box receives this SN, these data is saved on the fixed position of FLASH；
Serial number is unit expressly, and Set Top Box reads storage SN on a flash, by fixing private key KEY-1 and AES A by the serial number SN generation expressly a of Set Top Box；
Plain text encryption unit, the ChipID of reading machine top box, with ChipID as KEY-2, by AES B, plaintext a is generated the ciphertext b of regular length, then ciphertext b is stored the fixed position of FLASH；
Deciphering module, after Set Top Box electrifying startup, enters bootstrap booter, described ciphertext is decrypted and obtains expressly c, afterwards by described private key and AES, the serial number SN of Set Top Box is generated an expressly d, described deciphering module further particularly as follows:
Start unit, after Set Top Box electrifying startup, enters bootstrap booter；
Decryption unit, booter program reads the ChipID and ciphertext b of this Set Top Box from the fixed position of FLASH, using ChipID as KEY-2, by the decipherment algorithm BB corresponding with AES B, ciphertext b is decrypted, and obtains expressly c；
Generate expressly unit, read the serial number SN of this Set Top Box from the fixed position of FLASH, then pass through fixing private key KEY-1 and described AES A and the serial number SN of Set Top Box is generated expressly d；
Relatively start module, plaintext c is compared with expressly d, if unanimously, then starter motor top box；No, then not starter motor top box, described Set Top Box ChipID is the ChipID of the ChipID of CPU or FLASH chip.
One of the present invention specifically embodiment:
Currently, because the FLASH chip of the set-top box CPU chip of part, the overwhelming majority, there is unique ID, we are referred to as ChipID for the time being, therefore we need not increase extra hardware module, as long as before Set Top Box dispatches from the factory, by fixing private key KEY-1 and certain AES A, the serial number SN (being also unique) of Set Top Box is generated the plaintext a of regular length；Then again with unique ChipID as KEY-2, by certain AES B, plaintext a is generated the ciphertext b of regular length, then ciphertext b is stored the fixed position of FLASH.Afterwards, when Set Top Box starts every time, the ChipID and ciphertext b of booter program reading machine top box, and using ChipID as KEY-2, by corresponding decipherment algorithm BB, ciphertext b is decrypted, obtain expressly b.Again through fixing private key KEY-1 and certain AES A by the serial number SN generation expressly a of Set Top Box, finally, byte-by-byte contrast expressly a and expressly b, if it is inconsistent, just illustrate that ciphertext is not corresponding with unique ChipID of this Set Top Box, it is illegal for being considered as this software, does not just jump to application layer, and Set Top Box also just cannot employ；If two plaintexts are consistent, just jump to application layer by normal boot sequence.
As it is shown in figure 1, detailed description of the invention: the design of whole scheme is divided into encryption and two modules of deciphering:
Encrypting module: every Set Top Box, before dispatching from the factory, is interacted by proprietary protocol and PC end, carries out the operation being correlated with according to the instruction of PC end transmission.
1.PC end gives every Set Top Box one unique serial number (SN) of distribution, after Set Top Box receives this SN, these data is saved on the fixed position of FLASH；
2. after Set Top Box receives " generation ciphertext " instruction that PC end sends, Set Top Box reads storage SN on a flash, by fixing private key KEY-1 and AES A by SN generation expressly a；Remove to read the ChipID of CPU again, without reading, just read the ChipID of FLASH, with ChipID as KEY-2, by AES B, plaintext a is generated the ciphertext b of regular length, then ciphertext b is stored the fixed position of FLASH.
Deciphering module: after Set Top Box electrifying startup, enters bootstrap booter, will the ciphertext in FLASH be decrypted, and whether the plaintext obtained after verifying deciphering is effective, then judges whether to need normally to jump to application program according to effectiveness.
1.booter program reads the ChipID of this Set Top Box (CPU's or FLASH) and ciphertext b from the fixed position of FLASH, it is stored in memory headroom, using ChipID as KEY-2, by corresponding decipherment algorithm BB, ciphertext b is decrypted, obtains expressly b；
2. read the serial number SN of this Set Top Box again from the fixed position of FLASH, be stored in memory headroom, then pass through fixing private key KEY-1 and certain AES A and the serial number SN of Set Top Box is generated expressly a；
3. byte-by-byte contrast expressly a and expressly b, if inconsistent, just illustrate that ciphertext b is not corresponding with unique ChipID of this Set Top Box, and it is illegal for being considered as this software, does not just jump to application layer, and Set Top Box also just cannot employ；If two plaintexts are consistent, just jumping to application layer by normal boot sequence, Set Top Box can normally use.
Although the foregoing describing the specific embodiment of the present invention; but those familiar with the art is to be understood that; we are merely exemplary described specific embodiment; rather than for the restriction to the scope of the present invention; those of ordinary skill in the art, in the equivalent modification made according to the spirit of the present invention and change, should be encompassed in the scope of the claimed protection of the present invention.
Claims (8)
1. the set top box starting method based on ChipID, it is characterised in that: specifically include following steps:
Step 1, PC end give every Set Top Box one unique serial number SN of distribution, by private key and AES, sequence number of set top box SN generates expressly a, and this plain text encryption is generated a ciphertext；
After step 2, Set Top Box electrifying startup, enter bootstrap booter, described ciphertext is decrypted and obtains expressly c, afterwards the serial number SN of Set Top Box is generated a plaintext d by described private key and AES；
Step 3, plaintext c is compared with expressly d, if unanimously, then starter motor top box；No, then not starter motor top box.
2. a kind of set top box starting method based on ChipID according to claim 1, it is characterised in that: described step 1 particularly as follows:
Step 11, PC end give every Set Top Box one unique serial number SN of distribution, after Set Top Box receives this SN, these data are saved on the fixed position of FLASH；
Step 12, Set Top Box read storage SN on a flash, by fixing private key KEY-1 and AES A by the serial number SN generation expressly a of Set Top Box；
Step 13, reading machine top box ChipID, with ChipID as KEY-2, by AES B, plaintext a is generated the ciphertext b of regular length, then ciphertext b is stored the fixed position of FLASH.
3. a kind of set top box starting method based on ChipID according to claim 1, it is characterised in that: described step 2 further particularly as follows:
After step 21, Set Top Box electrifying startup, enter bootstrap booter；
Step 22, booter program read the ChipID and ciphertext b of this Set Top Box from the fixed position of FLASH, using ChipID as KEY-2, by the decipherment algorithm BB corresponding with AES B, ciphertext b are decrypted, and obtain expressly c；
Step 23, read the serial number SN of this Set Top Box from the fixed position of FLASH, then pass through fixing private key KEY-1 and described AES A and the serial number SN of Set Top Box is generated expressly d.
4. a kind of set top box starting method based on ChipID according to Claims 2 or 3, it is characterised in that: described Set Top Box ChipID is the ChipID of the ChipID of CPU or FLASH chip.
5. the Set Top Box based on ChipID starts system, it is characterised in that: specifically include such as lower module:
Encrypting module, PC end gives every Set Top Box one unique serial number SN of distribution, by private key and AES, sequence number of set top box SN generates expressly a, and this plain text encryption is generated a ciphertext；
Deciphering module, after Set Top Box electrifying startup, enters bootstrap booter, described ciphertext is decrypted and obtains expressly c, afterwards by described private key and AES, the serial number SN of Set Top Box is generated a plaintext d；
Relatively start module, plaintext c is compared with expressly d, if unanimously, then starter motor top box；No, then not starter motor top box.
6. a kind of Set Top Box based on ChipID according to claim 5 starts system, it is characterised in that: described encrypting module particularly as follows:
Serial number unit, PC end gives every Set Top Box one unique serial number SN of distribution, after Set Top Box receives this SN, these data is saved on the fixed position of FLASH；
Serial number is unit expressly, and Set Top Box reads storage SN on a flash, by fixing private key KEY-1 and AES A by the serial number SN generation expressly a of Set Top Box；
Plain text encryption unit, the ChipID of reading machine top box, with ChipID as KEY-2, by AES B, plaintext a is generated the ciphertext b of regular length, then ciphertext b is stored the fixed position of FLASH.
7. a kind of Set Top Box based on ChipID according to claim 5 starts system, it is characterised in that: described deciphering module further particularly as follows:
Start unit, after Set Top Box electrifying startup, enters bootstrap booter；
Decryption unit, booter program reads the ChipID and ciphertext b of this Set Top Box from the fixed position of FLASH, using ChipID as KEY-2, by the decipherment algorithm BB corresponding with AES B, ciphertext b is decrypted, and obtains expressly c；
Generate expressly unit, read the serial number SN of this Set Top Box from the fixed position of FLASH, then pass through fixing private key KEY-1 and described AES A and the serial number SN of Set Top Box is generated expressly d.
8. a kind of Set Top Box based on ChipID according to claim 6 or 7 starts system, it is characterised in that: described Set Top Box ChipID is the ChipID of the ChipID of CPU or FLASH chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610166525.1A CN105812877A (en) | 2016-03-23 | 2016-03-23 | Set-top box starting method and system based on Chip ID |
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| CN201610166525.1A CN105812877A (en) | 2016-03-23 | 2016-03-23 | Set-top box starting method and system based on Chip ID |
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| CN201610166525.1A Pending CN105812877A (en) | 2016-03-23 | 2016-03-23 | Set-top box starting method and system based on Chip ID |
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| CN107609415A (en) * | 2017-09-26 | 2018-01-19 | 重庆市珞宾信息技术有限公司 | A kind of equipment Serial Number write protection method |
| CN112788382A (en) * | 2020-12-31 | 2021-05-11 | 成都长虹网络科技有限责任公司 | Set top box with safety debugging function |
| CN112861168A (en) * | 2019-11-27 | 2021-05-28 | 山东云缦智能科技有限公司 | Software protection method for set top box |
| CN116775062A (en) * | 2023-08-22 | 2023-09-19 | 深圳市华曦达科技股份有限公司 | Encryption burning method for producing key |
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