CN103065068A - Method and device for encrypting recorded documents - Google Patents
Method and device for encrypting recorded documents Download PDFInfo
- Publication number
- CN103065068A CN103065068A CN2012105545585A CN201210554558A CN103065068A CN 103065068 A CN103065068 A CN 103065068A CN 2012105545585 A CN2012105545585 A CN 2012105545585A CN 201210554558 A CN201210554558 A CN 201210554558A CN 103065068 A CN103065068 A CN 103065068A
- Authority
- CN
- China
- Prior art keywords
- encryption
- electronic equipment
- bytes
- ksv
- sequence number
- Prior art date
- 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.)
- Granted
Links
Images
Landscapes
- Storage Device Security (AREA)
Abstract
The invention is suitable for the field of electronic device recorded data security and provides a method and device for encrypting recorded documents. The encryption method includes: key selection vector (KSV) serial number of an electronic device is obtained through a two-wire serial bus 12C; an encryption key for encrypting the recorded documents is generated according to the obtained KSV serial number; information output by the electronic device is obtained, the information output by the electronic device is encrypted by the generated encryption key so as to obtain the encrypted recorded documents. The method and device for encrypting recorded documents guarantees that the electronic device can only plays documents recorded by the electronic device, avoids copyright disputes caused by personal video recorder (PVC) document transmission, protects electronic device manufacturers well, and improves international competitiveness of the electronic device manufacturers.
Description
Technical field
The invention belongs to electronic equipment engraving data security fields, relate in particular to a kind of encryption method and device of imprinting file.
Background technology
Along with popularizing of domestic and international Digital Television, foreign huge numbers of families have also been entered as personal video record (Personal video recorder, the PVR) function of digital television standard configuration feature thereupon.
If but the video of imprinting also can be play the problem that will be referred to property infringement in other electronic equipment in an electronic equipment (such as TV), common practices in existing electronic equipment (such as the TV) software is, the requirement generation special form of the file layout of PVR generation according to distinct electronic apparatuses manufacturer, thereby make the PVR file of distinct electronic apparatuses manufacturer can not be compatible, can not play mutually.
But existing method still can not solve following problem: the PVR file of the electronic equipment imprinting of producing for same electronic equipment manufacturer, other electronic equipments that this same electronic equipment manufacturer produces still can be play.For example, suppose that Lee has bought the TV that vendor A is produced, the summer has also been bought the TV of a same model, and then Lee takes by the video file of the PVR imprinting of the TV of its purchase on the TV in summer and equally also can play.Like this, along with the market abroad order continue increase, the probability of running into such situation is also increasing, thereby has strengthened the probability of infringement of copyright.
Summary of the invention
The embodiment of the invention provides a kind of encryption method and device of imprinting file, and be intended to solve the PVR file of two electronic equipment imprintings of same model and can play each other, thus the problem that causes the probability of infringement of copyright to improve.
The embodiment of the invention is achieved in that a kind of encryption method of imprinting file, and described method comprises the steps:
Obtain the KSV sequence number of electronic equipment by twin wire universal serial bus I2C;
Generate the encryption key that is used for the encryption burning file according to the KSV sequence number that obtains;
Obtain the information of electronic equipment output, and adopt the information of the described electronic equipment output of the encryption keys that generates, with the imprinting file that obtains encrypting.
Another purpose of the embodiment of the invention is to provide a kind of encryption device of imprinting file, and described encryption device comprises:
The I2C bus is for the KSV sequence number that obtains electronic equipment by twin wire universal serial bus I2C;
The encryption key generation unit is used for generating the encryption key that is used for the encryption burning file according to the KSV sequence number that obtains;
Ciphering unit is used for obtaining the information of electronic equipment output, and adopts the information of the described electronic equipment output of the encryption keys that generates, with the imprinting file that obtains encrypting.
In the embodiment of the invention; because the KSV sequence number of each electronic equipment storage is different; therefore it also is different using the encryption key of the KSV sequence number generation of electronic equipment storage; thereby guarantee that the imprinting file that obtains at each electronic equipment also is different; guarantee that namely an electronic equipment can only play the file of this electronic equipment imprinting; avoided the dispute over copyright that causes because of the PVR file propagation; better protect electronic equipment manufacturer, increased the international competitiveness of electronic equipment manufacturer.
Description of drawings
Fig. 1 is the process flow diagram of the encryption method of a kind of imprinting file of providing of first embodiment of the invention;
Fig. 2 is the structural drawing of the encryption device of a kind of imprinting file of providing of second embodiment of the invention;
Fig. 3 is the structural drawing of the encryption device of the another kind of imprinting file that provides of second embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
In the embodiment of the invention, obtain the KSV sequence number of electronic equipment storage, generate the encryption key that is used for the encryption burning file according to this KSV sequence number, with the information of the encryption keys electronic equipment output that generates, thereby obtain imprinting file after this electronic equipment is encrypted.
For technical solutions according to the invention are described, describe below by specific embodiment.
Embodiment one:
Fig. 1 shows the process flow diagram of the encryption method of a kind of imprinting file that first embodiment of the invention provides, and details are as follows:
Step S11 obtains the KSV sequence number of electronic equipment by twin wire universal serial bus I2C.
In this step, KSV sequence number (video-encryption key) is pre-storedly to be furnished with HDMI (High Definition Multimedia Interface) (High Definition Multimedia Interface, HDMI) or in the electronic equipment of digital visual interface (DigitalVideo Interface, DVI).Can illegally do not recorded for the high-resolution signal that guarantees HDMI or DVI transmission, HDCP (High-bandwidth DigitalContent Protection, HDCP) technology just occurred.The HDCP technical manual is finished by Intel is leading, and when the user carried out bootlegging, this technology can be disturbed, and reduces the quality of the image that copies out, thereby content is protected.Each equipment of HDCP has a unique KSV sequence number, and the cryptography processing units of transmitting terminal and receiving terminal can be checked the other side's KSV value, is legal to guarantee to connect.
Electronic equipment manufacturer is that each electronic equipment (such as TV) is bought unique KSV sequence number, then among the FLASH or E2PROM of the burned mainboard to electronic equipment of KSV sequence number.In step S11, (Inter-Integrated Circuit, I2C) reads out the KSV sequence number among the FLASH of burned electronic equipment mainboard or the E2PROM by the twin wire universal serial bus.
Further, preserve the KSV sequence number that reads, as be kept at the array HashKey[of televisor] in.Wherein, the length of KSV is 289 bytes.
Step S12 generates the encryption key that is used for the encryption burning file according to the KSV sequence number that obtains.
The imprinting file of this step is also referred to as the PVR file.
Wherein, specifically comprise according to the step of the KSV sequence number generation of obtaining for the encryption key of encryption burning file: the encryption key that is used for the encryption burning file that the KSV sequence number of 289 bytes is generated 8 bytes.Wherein, front 4 bytes that are used for the encryption key of encryption burning file equal the quadratic sum of value of front 145 bytes of KSV sequence number; Rear 4 bytes that are used for the encryption key of encryption burning file equal the quadratic sum of value of rear 144 bytes of KSV sequence number.
In this step, being kept at HashKey[] the KSV sequence number of 289 bytes in the array generates the secret key of 8 bytes (64), front 4 bytes (32) of supposing this secret key are Key_1, then this Key_1 equals HashKey[] HashKey[0 of array] square add HashKey[1] square, be added to HashKey[144 always] square and, rear 4 bytes (32) of secret key are Key_2, this Key_2 equals HashKey[] HashKey[145 of array] square add HashKey[146] square, be added to HashKey[288 always] square draw.Because the KSV sequence number that each electronic equipment is bought is unique, so each electronic equipment is unique according to the 64 bit encryption keys that are used for the encryption burning file that itself KSV sequence number generates.Wherein, as follows for the encryption key generating code of encryption burning file:
Step S13 obtains the information of electronic equipment output, and adopts the information of the described electronic equipment output of the encryption keys that generates, with the imprinting file that obtains encrypting.
In this step, the user who obtains electronic equipment output needs the fileinfo of imprinting, for example, when the user uses the PVR imprinting of Digital Television, decoder module by this Digital Television, the signal that is transferred to this Digital Television is converted to corresponding numerical information, re-uses the numerical information that the encryption keys of generation is converted to.
Wherein, obtain the information of electronic equipment output, and adopt the information of the described electronic equipment output of the encryption keys that generates, specifically comprise with the step of the imprinting file that obtains encrypting: the information of obtaining electronic equipment output; Front 4 bytes of employing encryption key are encrypted the information of 4 bytes of the n time of output, the information of 4 bytes that (n+1) that rear 4 bytes encryption of employing encryption key is exported is inferior; Wherein, n is odd number, and n equals 1,3,5,7 ....Particularly, the information that the electronic equipment that obtains is exported is kept in the array of impact damper (buffer), each buffer data accounts for 4 bytes (32), then per two buffer data are encrypted, front 4 bytes (Key_1) of first buffer data and encryption key are carried out the data that the xor operation of mathematics obtains encrypting, rear 4 bytes (Key_2) of second buffer data and encryption key are carried out the data that xor operation obtains encrypting.
Preferably, obtain the information of electronic equipment output in step, and the information that adopts the described electronic equipment of the encryption keys that generates to export, after the imprinting file that obtains encrypting, further comprise the steps: by the I2C bus imprinting file that generates to be stored in the exterior storage medium.In this step, by the I2C bus imprinting file after encrypting is deposited (such as USB flash disk or portable hard drive etc.) in the exterior storage medium.
In embodiments of the present invention, obtain the KSV sequence number of electronic equipment storage, generate the encryption key that is used for the encryption burning file according to this KSV sequence number, with the information of the encryption keys electronic equipment output that generates, thereby obtain imprinting file after this electronic equipment is encrypted.Because the KSV sequence number of each electronic equipment storage is different; therefore it also is different using the encryption key of the KSV sequence number generation of electronic equipment storage; thereby guarantee that the imprinting file that obtains at each electronic equipment also is different; guarantee that namely an electronic equipment can only play the file of this electronic equipment imprinting; avoided the dispute over copyright that causes because of the PVR file propagation; better protect electronic equipment manufacturer, increased the international competitiveness of electronic equipment manufacturer.
Below play the process of the PVR file that this electronic equipment generates for electronic equipment deciphering: (1) at first, when the user plays PVR imprinting file, electronic equipment is read corresponding numerical information by I2C bus PVR file of (such as USB flash disk or portable hard drive etc.) from be stored in exterior storage medium, and be kept in the buffer array, each buffer data accounts for 4 bytes (32); (2) then to per two buffer data decipherings, first buffer data and Key_1 carry out the data that the xor operation of mathematics obtains deciphering, and second buffer data and Key_2 carry out the data that xor operation obtains deciphering; (3) after encrypt file is reduced into the ordinary numbers data, the data transmission of the video decode module by electronic equipment after these deciphering play in the video player of master chip decoding.
Embodiment two:
Fig. 2 shows the structure of the encryption device of a kind of imprinting file that second embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
The encryption device of this imprinting file can be used for the various information processing terminals by wired or wireless network connection server, such as televisor, computing machine, notebook computer etc., can be to run on the unit that software unit, hardware cell or software and hardware in these information processing terminals combine, also can be used as independently, suspension member be integrated in these information processing terminals or runs in the application system of these information processing terminals.
The encryption device of this imprinting file comprises: I2C bus 21, encryption key generation unit 22, ciphering unit 23.Wherein:
In the present embodiment, electronic equipment manufacturer is that each electronic equipment (such as TV) is bought unique KSV sequence number, then among the FLASH or E2PROM of the burned mainboard to electronic equipment of KSV sequence number.By the I2C bus KSV sequence number among the FLASH of burned electronic equipment mainboard or the E2PROM is read out again.Further, preserve the KSV sequence number that reads, as be kept at the array HashKey[of televisor] in.Wherein, the length of KSV is 289 bytes.
Preferably, described KSV sequence number is pre-stored in electronic equipment, the unique corresponding electronic equipment of each KSV sequence number.
Encryption key generation unit 22 is used for generating the encryption key that is used for the encryption burning file according to the KSV sequence number that obtains.
Wherein, the step of described encryption key generation unit 22 generation encryption keys is specially:
The KSV sequence number of 289 bytes is generated the encryption key that is used for the encryption burning file of 8 bytes; Wherein, front 4 bytes of described encryption key for the encryption burning file equal the quadratic sum of value of front 145 bytes of KSV sequence number; Rear 4 bytes of described encryption key for the encryption burning file equal the quadratic sum of value of rear 144 bytes of KSV sequence number.
In the present embodiment, being kept at HashKey[] the KSV sequence number of 289 bytes in the array generates the secret key of 8 bytes (64).
In the present embodiment, the information of the electronic equipment that obtains output is for without what encrypt, for example obtains the numerical information that is obtained by this digital television signal decoding of Digital Television output.
In embodiments of the present invention; because the KSV sequence number of each electronic equipment storage is different; therefore it also is different using the encryption key of the KSV sequence number generation of electronic equipment storage; thereby guarantee that the imprinting file that obtains at each electronic equipment also is different; guarantee that namely an electronic equipment can only play the file of this electronic equipment imprinting; avoided the dispute over copyright that causes because of the PVR file propagation; better protect electronic equipment manufacturer, increased the international competitiveness of electronic equipment manufacturer.
Fig. 3 shows the structural drawing of the encryption device of the another kind of imprinting file that the embodiment of the invention provides, and as one embodiment of the present invention, the ciphering unit 23 of the encryption device of imprinting file comprises:
Imprinting acquisition of information module 231 is used for obtaining the information of electronic equipment output.
Imprinting information encryption module 232 be used for to adopt front 4 bytes of encryption key to encrypt the information of 4 bytes of the n time of output, the information of 4 bytes that (n+1) that adopts rear 4 bytes of encryption key to encrypt to export is inferior; Wherein, n is odd number, and n equals 1,3,5,7 ...
In the present embodiment, the information that the electronic equipment that obtains is exported is kept in the array of buffer, each buffer data accounts for 4 bytes (32), then adopt 232 pairs of per two buffer data of imprinting information encryption module to be encrypted, front 4 bytes (Key_1) of first buffer data and encryption key are carried out the data that the xor operation of mathematics obtains encrypting, rear 4 bytes (Key_2) of second buffer data and encryption key are carried out the data that xor operation obtains encrypting.
As a preferred embodiment, described I2C bus 21 also is used for:
The imprinting file that generates is stored in the exterior storage medium.
In the present embodiment, by the I2C bus imprinting file after encrypting is deposited (such as USB flash disk or portable hard drive etc.) in the exterior storage medium, thereby can preserve this imprinting file.
In embodiments of the present invention, obtain the KSV sequence number of electronic equipment storage, generate the encryption key that is used for the encryption burning file according to this KSV sequence number, with the information of the encryption keys electronic equipment output that generates, thereby obtain imprinting file after this electronic equipment is encrypted.Because the KSV sequence number of each electronic equipment storage is different; therefore it also is different using the encryption key of the KSV sequence number generation of electronic equipment storage; thereby guarantee that the imprinting file that obtains at each electronic equipment also is different; guarantee that namely an electronic equipment can only play the file of this electronic equipment imprinting; avoided the dispute over copyright that causes because of the PVR file propagation; better protect electronic equipment manufacturer, increased the international competitiveness of electronic equipment manufacturer.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the encryption method of an imprinting file is characterized in that, described method comprises the steps:
Obtain the KSV sequence number of electronic equipment by twin wire universal serial bus I2C;
Generate the encryption key that is used for the encryption burning file according to the KSV sequence number that obtains;
Obtain the information of electronic equipment output, and adopt the information of the described electronic equipment output of the encryption keys that generates, with the imprinting file that obtains encrypting.
2. the method for claim 1 is characterized in that, described KSV sequence number is pre-stored in electronic equipment, the unique corresponding electronic equipment of each KSV sequence number.
3. the method for claim 1 is characterized in that, the step that the KSV sequence number that described basis is obtained generates the encryption key that is used for the encryption burning file specifically comprises:
The KSV sequence number of 289 bytes is generated the encryption key that is used for the encryption burning file of 8 bytes;
Wherein, front 4 bytes of described encryption key for the encryption burning file equal the quadratic sum of value of front 145 bytes of KSV sequence number; Rear 4 bytes of described encryption key for the encryption burning file equal the quadratic sum of value of rear 144 bytes of KSV sequence number.
4. the method for claim 1 is characterized in that, the described information of obtaining electronic equipment output, and adopt the information of the described electronic equipment output of the encryption keys that generates specifically comprises with the step of the imprinting file that obtains encrypting:
Obtain the information of electronic equipment output;
Front 4 bytes of employing encryption key are encrypted the information of 4 bytes of the n time of output, the information of 4 bytes that (n+1) that rear 4 bytes encryption of employing encryption key is exported is inferior; Wherein, n is odd number, and n equals 1,3,5,7 ...
5. such as each described method of claim 1 to 4, it is characterized in that, in the described information of obtaining electronic equipment output, and the information that adopts the described electronic equipment of the encryption keys that generates to export, after the step with the imprinting file that obtains encrypting, further comprise the steps:
By the I2C bus imprinting file that generates is stored in the exterior storage medium.
6. the encryption device of an imprinting file is characterized in that, described encryption device comprises:
The I2C bus is for the KSV sequence number that obtains electronic equipment by twin wire universal serial bus I2C;
The encryption key generation unit is used for generating the encryption key that is used for the encryption burning file according to the KSV sequence number that obtains;
Ciphering unit is used for obtaining the information of electronic equipment output, and adopts the information of the described electronic equipment output of the encryption keys that generates, with the imprinting file that obtains encrypting.
7. encryption device as claimed in claim 6 is characterized in that, described KSV sequence number is pre-stored in electronic equipment, the unique corresponding electronic equipment of each KSV sequence number.
8. encryption device as claimed in claim 6 is characterized in that, the step that described encryption key generation unit generates encryption key is specially:
The KSV sequence number of 289 bytes is generated the encryption key that is used for the encryption burning file of 8 bytes;
Wherein, front 4 bytes of described encryption key for the encryption burning file equal the quadratic sum of value of front 145 bytes of KSV sequence number; Rear 4 bytes of described encryption key for the encryption burning file equal the quadratic sum of value of rear 144 bytes of KSV sequence number.
9. encryption device as claimed in claim 6 is characterized in that, described ciphering unit comprises:
Imprinting acquisition of information module is used for obtaining the information of electronic equipment output;
Imprinting information encryption module be used for to adopt front 4 bytes of encryption key to encrypt the information of 4 bytes of the n time of output, the information of 4 bytes that (n+1) that adopts rear 4 bytes of encryption key to encrypt to export is inferior; Wherein, n is odd number, and n equals 1,3,5,7 ...
10. such as each described encryption device of claim 6 to 9, it is characterized in that described I2C bus also is used for:
The imprinting file that generates is stored in the exterior storage medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210554558.5A CN103065068B (en) | 2012-12-19 | 2012-12-19 | A kind of encryption method of imprinting file and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210554558.5A CN103065068B (en) | 2012-12-19 | 2012-12-19 | A kind of encryption method of imprinting file and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103065068A true CN103065068A (en) | 2013-04-24 |
| CN103065068B CN103065068B (en) | 2015-12-23 |
Family
ID=48107696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210554558.5A Active CN103065068B (en) | 2012-12-19 | 2012-12-19 | A kind of encryption method of imprinting file and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103065068B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104902324A (en) * | 2015-06-26 | 2015-09-09 | 深圳市九洲电器有限公司 | Method and system for protecting personal video recording file |
| CN111935435A (en) * | 2020-07-28 | 2020-11-13 | 深圳市鼎盛光电有限公司 | Video file encryption method and device, digital television equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030063580A (en) * | 2002-01-23 | 2003-07-31 | 주식회사 엘지이아이 | Method for managing a secret code of key of pvr |
| CN101064812A (en) * | 2006-04-24 | 2007-10-31 | 深圳Tcl新技术有限公司 | Method for reencrypting the cipher key of HDCP |
| US20090103470A1 (en) * | 2007-10-18 | 2009-04-23 | Candelore Brant L | Revocation management |
| CN101931784A (en) * | 2010-07-30 | 2010-12-29 | 康佳集团股份有限公司 | Method for encrypting and decrypting recorded program through HDCP key |
-
2012
- 2012-12-19 CN CN201210554558.5A patent/CN103065068B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030063580A (en) * | 2002-01-23 | 2003-07-31 | 주식회사 엘지이아이 | Method for managing a secret code of key of pvr |
| CN101064812A (en) * | 2006-04-24 | 2007-10-31 | 深圳Tcl新技术有限公司 | Method for reencrypting the cipher key of HDCP |
| US20090103470A1 (en) * | 2007-10-18 | 2009-04-23 | Candelore Brant L | Revocation management |
| CN101931784A (en) * | 2010-07-30 | 2010-12-29 | 康佳集团股份有限公司 | Method for encrypting and decrypting recorded program through HDCP key |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104902324A (en) * | 2015-06-26 | 2015-09-09 | 深圳市九洲电器有限公司 | Method and system for protecting personal video recording file |
| CN111935435A (en) * | 2020-07-28 | 2020-11-13 | 深圳市鼎盛光电有限公司 | Video file encryption method and device, digital television equipment and storage medium |
| CN111935435B (en) * | 2020-07-28 | 2022-12-20 | 深圳市鼎盛光电有限公司 | Video file encryption method and device, digital television equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103065068B (en) | 2015-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7613300B2 (en) | Content-protected digital link over a single signal line | |
| US7634090B2 (en) | Packet based high definition high-bandwidth digital content protection | |
| KR101735682B1 (en) | Mechanism for partial encryption of data streams | |
| CN103748592B (en) | For controlling the system and method to the access of protected content | |
| US20080148063A1 (en) | Method and apparatus for content protection within an open architecture system | |
| US20050201726A1 (en) | Remote playback of ingested media content | |
| US20090202068A1 (en) | Media security through hardware-resident proprietary key generation | |
| JP6683276B2 (en) | Interface circuit and information processing system | |
| US20100014671A1 (en) | Secure interchip transport interface | |
| CN101669126A (en) | Method and apparatus for composing a digital rights management license format | |
| JP2021507343A (en) | High-performance peripheral bus-based serial peripheral interface communication device | |
| CN101771663B (en) | Verification system based on UCPS protocol | |
| CN104966525A (en) | File encryption method and apparatus, and file decryption method and apparatus | |
| US8681977B2 (en) | Enabling/disabling display data channel access to enable/ disable high-bandwidth digital content protection | |
| CN103065068B (en) | A kind of encryption method of imprinting file and device | |
| CN202488620U (en) | Digital television host, conditional access module, and digital television | |
| CN103440451A (en) | Electronic system authentication chip based on DES (data encryption standard) | |
| CN102542181A (en) | Digital content and right article management system and method | |
| US8020214B2 (en) | Transmitter, receiver, and content transmitting and receiving method | |
| KR102521652B1 (en) | Interface module for transferring high definition video/audio data and display system including the same | |
| CN102223582B (en) | Decrypting descrambling device, decrypting descrambling method and disposing method | |
| CN203502966U (en) | Electronic system authentication chip | |
| JP5623426B2 (en) | Method and system for detecting successful authentication of multiple ports in a time-based mobile architecture | |
| Zhi et al. | Design and verification of High-Bandwidth Digital Content Protection transmitter authentication | |
| TWI493354B (en) | Video display system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |