TWI375160B - Method and system for locally activating a drm engine - Google Patents

Description

1375160 Amendment page No. 097143654 1 May 1st, 2017. Description of the Invention: [Technical Field of the Invention] The present invention relates to data encryption and decryption, and particularly relates to a partial activation digital rights management (Digital Rights Management) , DRM) Engine methods and systems. [Prior Art] Digital content can be delivered via On-Line or Off-Line. Online delivery is the download of digital content via the Internet, such as flashing via a specific storage medium (eg, a disc, a Digital Video Disk (DVD), or a portable electronic device (eg, a mobile phone). A memory device (for example, a Secure Digital (SD) memory card or a Universal Serial Bus' USB) is used to pre-record digital content. Offline transfer of Content Protection for Recording Media (CSS) and Content Protection for Recordable Media (CPRM) or SD Memory Card and DVD-RW pre-recorded media content protection (Content Protection) For Pre-Recorded Media, CPPM) to protect. The use of digital content is subject to the processing of a digital rights management system to ensure that the digital content of the payload is not illegally used or pirated. Figure 1 is a flow chart showing the method steps of a conventional digital rights management engine. The preprocessed digital content file is stored in the file server on the network.

Patent_Vlll/9034-A41794-TW / Draft-Final-1 6 1375160 Case No. 097143654 May 18, 2011 Corrected the page (step S11). After the consumer obtains the authorization, the preprocessed digital content file is downloaded and stored in an electronic device (for example, a personal computer or a mobile phone) (step S12), and simultaneously activates the digital rights management engine on the electronic device ( Step S13). The preprocessed digital content file and the internal code held by the electronic device (Internati〇nal M〇bile

Electron Identification (IMEI) and the rights object combination (step S14)' are used to convert the preprocessed digital content file into a file that can only be used on the electronic device using the digital rights management engine (step S15). The above methods include DRM processing of the 〇pen Mobile Alliance (OMA), Windows Media DRM 10 (WMDRM-ND) processing of the network device, and FairPlayTM processing of the Apple system. Taking OMA DRM processing as an example, the file format of the original digital content file is a video file such as .3gp or .mp3. 〇μα DRM will perform a pre-processing first to convert the .3gp file into a .dm (DRM Material) file, and then store the .dm right on a file server for download. When the consumer purchases the digital content file online and obtains the rights object (i.e., the digital content file), the dm file on the server is downloaded to the consumer's electronic device. The electronic device's digital rights management engine links the rights object and its internal code to the digital content (Bind) and converts the .dm file to the .dcf (DRM Content Format) file. After this processing, the digital content file of the .dcf file can only be used in this particular electronic device in the manner given by the rights object. However, the drawback of the above method is that it is only applicable to online delivery, and its digital rights management method may violate consumers' traditional use of content.

Patent_VIII/9034-A41794-TW / Draft-Final-1 7 1375160 Case No. 097143654 May 18, 2011 Revision of the Rights and Usage (TRU). Figure 2 is a flow chart showing the steps of another conventional digital rights management engine processing method. The preprocessed digital content file is stored in an embedded memory of the electronic device to encrypt the preprocessed digital content file (step S21). The rights object of the digital content file can be downloaded via the network (e.g., the Internet) (step S22), and stored in the electronic device (step S23), and the digital rights management engine of the electronic device is activated (step S24). The digital rights management engine first decrypts the preprocessed digital content (step S25), links the internal code and the rights object of the electronic device to the digital content file (step S26), and converts the digital content file into a new file format ( Step S27). Therefore, the digital valley file can only be used on this particular electronic device. For example, the file format of Windows Media DRM (WMDRM-PD) for portable storage is asf (Advanced System)

Format). The above method is applicable to the portable electronic device, but the rights object needs to be transmitted separately. Although the security is slightly improved, the dependence on the network cannot be undone. Figure 3 is a flow chart showing the steps of another conventional digital rights management engine. The digital rights management mechanism is separately designed without using the digital rights management engine supported by the electronic device (step S31). Digital content files are pre-processed and converted to a fingerprint format that can be processed by a self-designed digital rights management engine or system (step § 32). Therefore, within the digit

Patent VII1/9034-A41794-TW / Draft-Final-1 1375160 Case No. 097143654 The revised page capacity of May 18, 101 can only be accessed by the electronic device containing the self-designed digital rights management engine or system (step S33) ). The above methods face the following problems: 1) the programming of this program is vast; 2) this program may occupy a large memory space; 3) the digital rights management mechanism is usually closely related to the bottom of the operating system platform, and there will be compatibility. The problem; and 4) because it is written by itself, it lacks experience in the industry and it is difficult to gain the trust of the content industry. SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and system for locally initiating a digital rights management engine. Based on the above objective, an embodiment of the present invention discloses a method for locally starting a digital rights management engine, which is applied to an electronic device. A pre-processing operation is performed, which stores or links the rights object separately from the digital content file of the first file format, and the digital content file has a unique authentication code for verification. Converting the digital content file of the first file format to a digital content file of a second file format, and encrypting the digital content file of the second file format and generating a corresponding decryption key. The encrypted digital content file and the decryption key are stored in a memory device, and if the rights object is stored separately, the rights object is stored in a hidden area of the memory. Use an application to perform operations such as authentication, file decryption, digital rights management engine startup and security control. The application is installed in the memory device and the memory device is mounted in the electronic device. The application is verified according to the authentication code of the digital content file, and the encrypted digital content file is decrypted by the application and the decryption key, wherein the first

Patent VIII/9034-A41794-TW / Draft-Final-1 9 1375160 Case No. 097143654 May 18, 101 Revision Page The digital file of the three file formats is restored to the digital content of the second file format. A digital rights management engine of the electronic device is activated by the application, and the digital content code (IMEI) is linked to the digital content file and the rights object by the digital rights management engine, so that the digital content file is It can only be accessed by the electronic device. The embodiment of the invention further discloses a system for locally starting a digital rights management engine, comprising a memory device and an electronic device. The memory device provides a memory location for storing a digital content file and an application, wherein the application performs operations such as verification, file decryption, digital rights management engine startup and security control, and the digital content file utilizes an encryption method and A decryption key to encrypt. The electronic device provides a digital rights management engine. When the memory device is installed to the electronic device, the application performs verification according to the authentication code of the digital content file, and uses the decryption key to decrypt the encrypted digital content file, wherein the digital content file of the first file format is converted. It is a digital content file of a second file format, and the digital rights management engine is started. The digital rights management engine converts the digital content file of the second file format into a digital content file of a third file format, and links an internal code (IMEI) of the electronic device with the digital content file and the rights object, such that The digital content file can only be accessed by the electronic device. The embodiment of the invention further discloses a method for locally starting a digital rights management engine, which is applied to an electronic device. A pre-processing operation is performed to convert the digital content file of the first file format into the digital content file of the second file format. Encrypting the digital content file of the second file format to convert the digital content file of the second file format into a digit of a third file format

Patent VIII/9034-A41794-TW / Draft-Final-1 1375160 Case No. 097143654 May 18, 2011 Amendment page The file is created with a corresponding decryption key. The encrypted digital content file and the decryption key are stored in respective memory locations of the memory device. An application is used to perform operations such as authentication, file decryption, digital rights management engine startup and security control, and the application is installed in the memory device. The memory device is installed in the electronic device, and the application is verified based on the authentication code of the digital content file. The encrypted digital content file is decrypted by the application and using the decryption key, wherein the digital content file from the third file format is restored to the digital content file of the second file format. And the digital rights management engine of the electronic device is activated by the application, and the digital content file of the second file format is linked to the digital object of the digital content and the internal code of the electronic device by the digital rights management engine So that the digital content file can only be accessed and used by the electronic device. The embodiment of the invention further discloses a system for locally starting a digital rights management engine, comprising a memory device and an electronic device. The memory device provides a memory location for storing a digital content file, an application, an authentication code, and a rights object, wherein the digital content file is encrypted using an encryption method and a decryption key, such that a first file format is to be The digital content file is converted into a digital content file of a second file format, and the digital content file of the second file format is converted into a digital content file of a third file format. The electronic device provides a digital rights management engine that performs operations such as authentication, file decryption, digital rights management engine initiation, and security control. When the memory device is mounted to the electronic device, the application verifies according to the authentication code of the digital content file, and decrypts with the decryption key

Patent VIII/9034-A41794-TW / Draft-Final-1 11 B75160 Case No. 097143654 May 18, 101, Amendment page = = Content file 'The digital content from the third file format ^ Original to ^ 2 (4) The format is read in digital and the digital rights management engine of one of the electronic devices is activated. The digital rights management engine uses the slot and the rights object of the digital content for device access. "The digital intra-column file can only be used by the electronic system. [Embodiment] In order to make the objects, features, and advantages of the present invention more comprehensible, the preferred embodiments are described below, and in conjunction with Figures 4 through 7 is a detailed description of the present invention. The present invention describes the technical features of different embodiments of the present invention. The configuration of each component in the embodiment is "not used (10). The present invention is not limited to the meaning of the different embodiments in order to simplify the description in the embodiments. The method and system for locally starting the digital rights management engine are disclosed in the embodiments of the present invention. The method and system for locally enabling the digital rights management engine of the present invention are applicable to a portable flash memory device (for example, Secure Digital 'SD) memory card, universal serial bus (Universal)

Serial Bus, USB)) A built-in flash flashing device in an electronic device to generate a digital rights management mechanism different from the network system. The digital rights management mechanism utilizes the digital rights management of the electronic device. To overcome the compatibility between the digital rights management and the operating system of the electronic device

Patent_VIIl/9034-A41794-TW / Draft-Final-1 12 1375160 Amendment page Case No. 097143654 1 May 1st Sexual problem. Rights Management FIG. 4 is a flow chart showing the steps of the method of partially starting the digital engine in the embodiment of the present invention. The lamp-pre-processing operation is performed in which the _ object and the digital content are linked together (step S4G1), and the number (4) is accommodating and the exclusive money code is used for verification. Converting the digital content of the first financial format (for example, .3gP file) to the digital content file of the second conversion format (for example, .dm floor of 〇(4) DRM1.0) (step S4〇2), by specific electronic The digital rights management engine of the device is identified. For example, the OMA 1.0 content wrapper (such as s〇NY_Eric's coffee)

Packager ) converts the original digital content file into a .dm file, at which point the rights material has been wrapped in the content. Since 〇MA's digital rights management engine requires a program to be transmitted over the network to be activated, this dm (4) cannot be used by general electronic devices. However, for those skilled in the art, this .dm file can be copied to the file server and then downloaded after being downloaded over the network, so there must be another layer of protection. Therefore, if downloaded from a file server, the digital content building of the first standard format is encrypted, which utilizes an encryption mechanism (for example, Advanced Encryption System (AES), 3 data encryption system (3 Data) Encryption System, 3DES), Twofish, etc.) encrypt the digital content file of the second file format, wherein the digital content file of the second file format is converted into a digital content file of the third file format ( For example, the .aes file) simultaneously generates a corresponding decryption key (step S403).

Patent VIII/9034-A41794-TW / Draft-Final-1 13 1375160 Case No. 097143654 The May 18, 2011 revision page stores the encrypted digital content file and the decryption key in a cartridge device (eg 'SD' The respective memory locations of the memory card (for example, the digital content is stored in the public area, and the decryption key is stored in the hidden area) (step S404). The decryption key can also be stored in the memory device or in an application that has been compiled into a machine language and cannot be recognized for enhanced protection. Designing an application program (for example, c++) to perform operations such as verification, slot decryption, digital rights management engine startup and security control (step S405), and installing the application on the memory device (step S406). When the memory device is installed in the electronic device, (step S407), the application is verified based on the authentication code of the digital content file (step S408). The authentication code can be a unique serial number of the digital content file or a unique serial number of the memory device. After successful verification, the application decrypts the Kaohsiung digital content by using the decryption key, wherein the digits from a third file format (.Nove) are transferred to the second broadcast format (. The digital content floor of dm) (step S409), and the digital rights management engine of the electronic device is locally activated (step S410). The digital rights management engine converts the digital content file of the second broadcast format (. (5) into a digital content slot of the fourth slot format (. (4) (step S411) 'and encodes one of the electronic devices) The digital content file is linked (the rights object and the digital content slot are preceded by the step S412), so that the job content file can only be accessed and used by the electronic device (step S413). Zhuang~~ stomach" Removed from the electronic device, or in the touch of the electronic device_management material_electronic device,

Patent_VIII/9034^A41794-TW / Draft^Final-1 14 1375160 Case No. 097143654 May 18, 2011 Revision Page This application performs security controls to delete encrypted digital content files. Figure 5 is a schematic diagram showing the system architecture of the local boot digital rights management engine of the embodiment of the present invention. The system includes a memory device 500 and an electronic device 600. The electronic device 600 includes a digital rights management engine 610. The memory device 500 provides a memory location 550 (eg, a hidden area and a public area) to store an authentication code 552 of the digital content file 55 digital content file 551, a decryption key 553, and an application 555, wherein the digital content file 551 is utilized. An encryption method is encrypted with the decryption key 553. If the digital content file 551 is processed using AES, the format of the digital content file 551 is .aes. The application 555 is designed in a programming language (e.g., C++) to perform operations such as authentication, file decryption, digital rights management engine startup, and security control. When the memory device 500 is mounted to the electronic device 600, the application 555 authorizes based on the authentication code 552 of the digital content file 551. The authentication code 552 can be a unique serial number of the digital content file 551 or a unique serial number of the memory device. Upon successful verification, the application 555 decrypts the encrypted digital content file 551 using the decryption key 553, wherein the digital content file 551 from a third file format (.aes) is restored to the second file format (.dm) digit. The content file 551, and the digital rights management engine 610 of the electronic device 600 is locally activated. The digital rights management engine 610 converts the digital content file 551 of the second file format (.dm) into the digital content file 551 of the first file format (.dcf), and encodes an internal code (IMEI) of the electronic device with the digital Content file 551 link (right object and digital content file 551 in the previous program has been first

Patent VI1I/9034-A41794-TW / Draft-Final-1 ι^/Μ60 3 Correction page 551 can only be accessed by the electronic device 6 〇〇 号 097143654 May 19, 2011, so that the digital content file is accessed use. A second embodiment of the present invention discloses another example of a method and system for locally initiating a digital rights management engine. /In the embodiment of the present invention, the method and system for locally starting the digital rights management system are applicable to a portable flash memory device (for example, a secure digital (Secheng Digital, SD) memory card, a general sequence book Streaming (e^al Bus 'USB)) Disks or embedded flash memory devices in electronic devices to generate digital rights management mechanisms different from network systems. The digital rights management mechanism of the digital electronic device of the Hunan electronic device overcomes the compatibility problem between the digital rights management engine and the electronic device. Figure 6 is a flow chart showing the steps of a method for locally initiating a digital rights management engine in accordance with another embodiment of the present invention. Performing a pre-processing operation to convert the digital content slot of the first file format (for example, OMA's .3gp file) into the digital content of the second standard format (for example, 〇ma DRM1.0.dcf) (step 6 〇1), which can only be recognized by the digital rights management engine of a particular electronic device, and needs to be combined with its corresponding rights object to be used. For example, * the original digital content block is converted to .dcf by the OMA 1.0 content wrapper (such as S〇NY-Ericsson's DRM Packager), at which point the corresponding one of the rights objects is also generated simultaneously 'but not Linked to the digital content file of this second file format. It should be noted that the .dcf file in this embodiment does not correspond to the .dcf file in Figure 4.

Patent_VIII/9034-A41794-TW / Draft-Final-1 16 1375160 Case No. 097143654 May 18, 2011 Amendment page Same as 'Encryption' does not use the right object. This file has been encrypted and there are basically no concerns about illegal use. However, in order to enhance its protection mechanism, in this implementation, an encryption mechanism (for example, Advanced Encryption System (AES), 3 Data Encryption System (3DES) 'Twofish (double fish)... And so on) encrypting the digital content file of the second file format, wherein the digital content file of the second file format is converted into a digital content file of the third file format (for example, a .aes file), and a corresponding decryption key is generated ( Step 602). The encrypted digital content file and the decryption key are stored in respective memory locations of a memory device (eg, an SD memory card) (eg, the digital content block is stored in the public area, and the decrypted data is stored in the hidden area) (Step 6〇3). The decryption key can also be stored in the memory device or in an application that has been compiled into a machine language and cannot be recognized for enhanced protection. Designing an application using a programming language (for example, C++) to perform operations such as verification, file decryption, digital rights management engine startup and security control (step 6〇4), and installing the application on the memory device (steps) 605). When the memory device is installed in the electronic device (step 606), the application is verified based on the authentication code of the digital content file (step 607). The authentication code can be a unique serial number of the digital content file or a unique serial number of the memory device. After successful verification, the application decrypts the encrypted digital content file by using the decryption key, wherein the digital content from the third file format (.aes) is restored to the digital content file of the second file format (.dcf) (step

Patent_VIII/9〇34-A41794-TW / Draft-Final-] 17 1375160 Case No. 097143654 May 18, 2011 Amendment page S608), and the digital rights management engine of the electronic device is locally activated (step S609). The digital rights management engine combines the digital content of the second file format (.dcf) with the rights object and an inner code (IMEI) of the electronic device to become a digital file of the fourth file format (.dcf) of the same name ( Step 610), the digital content file is made accessible only by the electronic device (step 611). It is noted that when the memory device is removed from the electronic device or the electronic device is turned off prior to activation of the electronic device's digital rights management engine, the application performs security controls to delete the encrypted digital content file. Figure 7 is a block diagram showing the system architecture of a partial-initiated digital rights management engine according to another embodiment of the present invention. The system includes a memory device 700 and an electronic device 800. The electronic device 800 provides a digital rights management engine 810. The memory device 700 provides a memory location 750 (eg, a hidden area and a public area) to store a digital content file 751, an authentication code 752 of the digital content file 751, a decryption key 753, an application 755 - a rights object 757, wherein The digital content file 751 is encrypted with an encryption key 753 using an encryption method. If AES is used to process the digital content file 751, the format of the digital content file 751 is .aes. The application 755 is designed in a programming language (e.g., C++) to perform operations such as verification, file decryption, digital rights management engine startup, and security control. When the memory device 700 is mounted to the electronic device 800, the application 755 verifies based on the authentication code 752 of the digital content file 751. The authentication code 752 can be a unique serial number of the digital content file 751 or a unique serial number of the memory device 700.

Patent VIII/9034-A4I794-TW / Draft-Final-1 18 1375160 Case No. 097143654 Revision page of May 18, 101 After successful verification, the application 755 decrypts the encrypted digital content file 751 using the decryption key, wherein The digital content file 751 of a third file format (.aes) is restored to the digital content file 751 of the second file format (.dcf), and the digital rights management engine 810 of the electronic device 800 is locally activated. The digital rights management engine 810 combines the digital content file 751 of the second file format (.dcf) with the rights object 757 and an inner code (IMEI) of the electronic device 800 to become the digital content of the fourth file format (.dcf) of the same name. The file 751 is such that the digital content file 751 can only be accessed by the electronic device 800. The method and system for partially starting the digital rights management engine in the embodiment of the present invention are applicable to offline transmission of a portable electronic device or a portable flash memory device, and establish a digital content file that can be independent of the network system. Offline delivery with corresponding digital rights management. In addition, the present invention provides a self-designed application to launch a digital rights management engine for a particular electronic device that overcomes the compatibility issues between the operating system of a particular electronic device and the digital rights management engine. The method of the invention, or a particular version or portion thereof, may exist in the form of a code. The code can be included in a physical medium such as a floppy disk, a CD, a hard disk, or any other machine readable (eg computer readable) storage medium in which the code is loaded and executed by a machine such as a computer. At this time, the machine becomes a device for participating in the present invention. The code can also be transmitted via some transmission medium, such as a wire or cable, fiber optics, or any transmission type, where the machine becomes part of the program when it is received, loaded, and executed by a machine, such as a computer. Invented device. When used in general

Patent VIII/9034-A41794-TW / Draft-Final-1 1375160 Case No. 097143654 May 18, 101 Revision Page When the processing unit is implemented, the code combination processing unit provides a unique device that operates similarly to the application specific logic circuit. While the present invention has been described above by way of a preferred embodiment, it is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application. [Simple description of the diagram] Figure 1 is a flow chart showing the method steps of the traditional digital rights management engine. Figure 2 is a flow chart showing the steps of another conventional digital rights management engine processing method. Figure 3 is a flow chart showing the steps of another conventional digital rights management engine. Figure 4 is a flow chart showing the steps of a method for locally initiating a digital rights management engine in accordance with an embodiment of the present invention. Figure 5 is a schematic diagram showing the system architecture of the local boot digital rights management engine of the embodiment of the present invention. Figure 6 is a flow chart showing the steps of a method for locally initiating a digital rights management engine in accordance with another embodiment of the present invention. Figure 7 is a block diagram showing the system architecture of a partial-initiated digital rights management engine according to another embodiment of the present invention. [Main component symbol description] 500, 700~ memory device

Patent VIII/9034-A41794-TW / Draft-Final-1 20 1375160 Amendment page number 097143654 May 18, 550 550, 750 ~ memory location 551, 751 ~ digital content file 552, 752 ~ authentication code 553, 753 ~ decryption key 555, 755 ~ application 757 ~ rights object 600, 800 ~ electronic device 610, 810 ~ digital rights management engine 511.. 515 ~ process step 521.. 527 ~ process step 531.. 533 ~ process step 5401. 5413~Process Step 5601.. 5611~ Process Step

Patent VIII/9034-A41794-TW / Draft-Final-1 21

Claims (1)

1375160 X. Patent application scope: 1. A method for locally starting a digital rights management engine, which is applied to an electronic device, comprising the following steps: Performing a pre-processing operation, which uses a rights object and a digital content file of a first file format. Separatingly storing or linking together; converting the digital content file of the first file format into a digital content file of a second file format; encrypting the digital content file of the second file format and generating a corresponding decryption key; The digital content file and the decryption key are stored in a respective memory location of the memory device; an application is used to perform verification, file decryption, digital rights management engine startup and security control, etc.; the application is installed in the memory Installing the memory device into the electronic device; authenticating the application according to the authentication code of the digital content file; and decrypting the encrypted digital content file by using the decryption key by the application, wherein Restore the digital content file of the three file formats to the second file grid a digital content file; the digital rights management engine of the electronic device is activated by the application; and the digital code is linked to the digital content file and the rights object by the digital rights management engine, so that the digital The content file can only be accessed and used by the electronic device. 2. The method of locally-initiating a digital rights management engine according to claim 1, wherein the digital content file of the second file format can only be used by the electronic device. The device is identified by the digital rights management engine. 3. The method of claim 3, wherein the step of encrypting the digital content file further comprises converting the digital content file of the second file format to the third file format. Digital content slot. 4. The method of locally activated digital rights management engine of claim 1, wherein the decryption key is stored in the memory device. 5. A method of locally initiating a digital rights management engine as described in claim 1, wherein the authentication code is a unique serial number of the digital content file or a unique serial number of the memory device. 6. The method for locally initiating a digital rights management engine according to claim 1, further comprising converting the digital content file of the second file format into a fourth file format when the digital rights management engine is activated Digital content file. 7. A system for locally launching a digital rights management engine, comprising: a memory device that provides a memory location for storing a digital content file, an application, an authentication code, and a rights object, wherein the digital content file Encrypting with an encryption method and a decryption key; and an electronic device providing a digital rights management engine, wherein the application performs operations such as verification, file decryption, digital rights management engine startup and security control; Patent VIII/9034- A41794-TW / Draft-Final 23 1375160 wherein, when the memory device is installed to the electronic device, the application performs verification according to the authentication code of the digital content file, and decrypts the encrypted digital content file by using the decryption key, wherein Converting a digital file of a first file format into a digital content file of a second file format, and initiating the digital rights management engine, the digital rights management engine converting the digital content file of the second file format into a third file a digital content file in the file format, and the inner code of the electronic device and the number Link file content so that the digital content files can only be accessed using the electronic device. 8. The system for locally activated digital rights management engine of claim 7, wherein the decryption key is stored in the memory device. 9. The system for locally activated digital rights management engine of claim 7, wherein the authentication code is a unique serial number of the digital content file or a unique serial number of the memory device. 10. A computer recordable medium for storing a computer program, the computer program comprising a plurality of code segments for loading into a computer system and causing the computer system to perform a method of locally launching a digital rights management engine The method is applied to an electronic device, comprising: performing a pre-processing operation, separately storing or linking the rights object to a digital content file of a first file format; converting the digital content file of the first file format into one a digital content file of the second file format; encrypting the digital content file of the second file format and generating a corresponding decryption key; Patent VIII/9034-A41794-TW / Draft-Final 24 1375160 encrypting the encrypted digital content file with the decryption key The key is stored in a memory device; an application is used to perform verification, file decryption, digital rights management engine startup and security control, etc.; the application is installed in the memory device; and the memory device is installed to the electronic device In the device; performing the application according to the authentication code of the digital content file Decrypting the encrypted digital content file by the application and using the decryption key, wherein the digital content file of a third file format is restored to the digital content file of the second file format; and the application is started by the application a digital rights management engine of the electronic device; and the digital code of the electronic device is coupled to the digital content file and the rights object by the digital rights management engine, so that the digital content file can only be accessed by the electronic device. 11. The computer recordable medium of claim 10, wherein the digital content file of the second file format is only identifiable by the digital rights management engine of the electronic device. 12. The computer recordable medium of claim 10, wherein the step of encrypting the digital content file further comprises converting the digital content file of the second file format into a digital content file of the third file format. 13. The computer recordable medium of claim 10, wherein the decryption key is stored in the memory device. 14. The computer recordable medium according to claim 10, Patent VHI/9034-A41794-TW / Draft-Final 25 1375160 wherein the authentication code may be a unique serial number of the digital content file or the memory One of the unique serial numbers of the device. 15. The computer recordable medium of claim 10, further comprising converting the digital content file of the second file format into a digital content file of a fourth file format when the digital rights management engine is activated. . 16. A method of locally initiating a digital rights management engine for use in an electronic device, comprising the steps of: performing a pre-processing operation to convert a digital content file of a first file format into a digital content of a second file format Encrypting the digital content file of the second file format to convert the digital content file of the second file format into a digital content file of a third file format, and simultaneously generating a corresponding decryption key; and the encrypted digital content file And the decryption key is stored in a respective memory location of the memory device; performing an operation, such as verification, file decryption, digital rights management engine startup and security control, by an application; installing the application in the memory device; installing Transmitting the memory device to the electronic device; authenticating the application according to the authentication code of the digital content file; and decrypting the encrypted digital content file by using the decryption key, wherein the third file format is decrypted by the application Retrieving the digital content file to the digital content file of the second file format; The application launches a digital rights management engine of the electronic device; and Patent_VIII/9034-A41794-TW / Draft-Final 26 1375160 by the digital rights management engine, the digital content file of the second file format and the digital content rights The object and the code of one of the electronic devices are linked such that the digital content file can only be accessed by the electronic device. 17. A system for locally enabling a digital rights management engine, comprising: a memory device that provides a memory location for storing a digital content file, an application, an authentication code, and a rights object, wherein the digital content file utilizes An encryption method is encrypted with a decryption key, such that the digital content file of the first file format is converted into a digital content file of the second file format, and the digital content file of the second file format is converted into a third file. a formatted digital content file; and an electronic device providing a digital rights management engine, wherein the application performs operations such as verification, file decryption, digital rights management engine startup and security control; wherein, when the memory device is installed to the In the electronic device, the application performs verification according to the authentication code of the digital content file, and decrypts the encrypted digital content file by using the decryption key, wherein the digital content file from the third file format is restored to the digital file format of the second file format Content file, and launching a digital rights management engine of the electronic device, and the The rights management engine, a second file format of digital content and the rights object file of the digital content and the code number of the electronic device connected to one, so that the digital content files can only be accessed using the electronic device. Patent VIII/9034-A41794-TW / Draft-Final 27