CN113420311A - RTL file encryption method and device, electronic equipment and storage medium - Google Patents

RTL file encryption method and device, electronic equipment and storage medium Download PDF

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Publication number
CN113420311A
CN113420311A CN202110747576.4A CN202110747576A CN113420311A CN 113420311 A CN113420311 A CN 113420311A CN 202110747576 A CN202110747576 A CN 202110747576A CN 113420311 A CN113420311 A CN 113420311A
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rtl file
random variable
random
variable
variable name
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向朝中
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Hunan Goke Microelectronics Co Ltd
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Hunan Goke Microelectronics Co Ltd
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    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60Protecting data
    • G06F21/602Providing cryptographic facilities or services

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Abstract

The invention discloses an RTL file encryption method, an RTL file encryption device, electronic equipment and a storage medium, wherein the method comprises the following steps: searching variables contained in the target RTL file; generating random variable names for variables by using HDL naming rules; establishing a corresponding relation by using the variable and the random variable name, and updating the target RTL file according to the corresponding relation to obtain an encrypted RTL file; the method can effectively encrypt the target RTL file by using the random variable name generated for the variable in the target RTL file; meanwhile, because the RTL file is not encrypted by using an external encryption tool, the encrypted RTL file obtained by the method does not need the external encryption tool to participate in the simulation process, so that the interference of the external encryption tool to the simulation of the encrypted RTL file in the related technology can be effectively avoided, the target RTL file is effectively encrypted, and meanwhile, the simulation efficiency of the encrypted RTL file can be improved.

Description

RTL file encryption method and device, electronic equipment and storage medium
Technical Field
The invention relates to the field of digital integrated circuit design, in particular to an RTL file encryption method, an RTL file encryption device, electronic equipment and a storage medium.
Background
An RTL (Register Transfer Level) file is an important file in the design link of a digital integrated circuit, and has many applications in the design and simulation of the digital integrated circuit, so that it is important to the encryption protection of the RTL file. In the related art, the RTL file is mainly encrypted by external encryption tools such as EDA tools or a synthesized netlist, however, the RTL file encrypted by the above method still needs the external encryption tools to participate in the simulation, and when the RTL file is increased in size and complexity, the above encryption method will severely limit the simulation efficiency of the RTL file, and the RTL file is difficult to debug, even has abnormal simulation errors.
Therefore, how to encrypt the RTL file to reduce the effect of encryption on the simulation efficiency is a technical problem to be faced by those skilled in the art.
Disclosure of Invention
The invention aims to provide an RTL file encryption method, an RTL file encryption device, electronic equipment and a storage medium, which can effectively encrypt a target RTL file by utilizing the corresponding relation between variables and random variable names in the target RTL file, do not need to use an external encryption tool and can effectively avoid the interference of the external encryption tool on the simulation of the encrypted RTL file in the related technology.
In order to solve the above technical problem, the present invention provides an RTL file encryption method, including:
searching variables contained in the target RTL file;
generating random variable names for the variables by using HDL naming rules;
and establishing a corresponding relation by using the variable and the random variable name, and updating the target RTL file according to the corresponding relation to obtain an encrypted RTL file.
Optionally, the generating random variable names for the variables using HDL naming rules comprises:
determining the number of the variables, and calling a system random value generation function to generate random character strings corresponding to the number;
and adjusting the random character string by using the HDL naming rule to obtain the random variable name.
Optionally, after generating a random variable name for the variable by using the HDL naming rule, further comprising:
judging whether the random variable names are repeated or not;
if yes, updating the repeated random variable name by using the HDL naming rule;
and executing the step of establishing the corresponding relation between the variable and the random variable name by using the updated random variable name.
Optionally, the establishing a corresponding relationship between the variable and the random variable name includes:
judging whether the variable is a designated variable or not;
if not, establishing the corresponding relation by using the random variable name and the variable;
if so, adding a preset prefix and/or a preset suffix corresponding to the variable to the random variable name, and establishing the corresponding relation by using the added random variable name and the variable.
Optionally, after the corresponding relationship between the variable and the random variable name is established, the method further includes:
and outputting the corresponding relation.
The invention also provides an RTL file encryption device, which comprises:
the searching module is used for searching variables contained in the target RTL file;
the generating module is used for generating random variable names for the variables by using HDL naming rules;
and the updating module is used for establishing a corresponding relation between the variable and the random variable name and updating the target RTL file according to the corresponding relation to obtain an encrypted RTL file.
Optionally, the generating module includes:
the random character string generation submodule is used for determining the number of the variables and calling a system random value generation function to generate random character strings corresponding to the number;
and the random variable name generation submodule is used for adjusting the random character string by utilizing the HDL naming rule to obtain the random variable name.
Optionally, the method further comprises:
the judging module is used for judging whether the random variable names are repeated or not;
the updating module is used for updating repeated random variable names by using the HDL naming rule if the random variable names are the same as the HDL naming rule;
and the processing module is used for executing the step of establishing the corresponding relation between the variable and the random variable name by using the updated random variable name.
The present invention also provides an electronic device comprising:
a memory for storing a computer program;
and a processor, configured to implement the steps of the RTL file encryption method as described above when executing the computer program.
The present invention also provides a storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the RTL file encryption method as described above.
The invention provides an RTL file encryption method, which comprises the following steps: searching variables contained in the target RTL file; generating random variable names for the variables by using HDL naming rules; and establishing a corresponding relation by using the variable and the random variable name, and updating the target RTL file according to the corresponding relation to obtain an encrypted RTL file.
Therefore, the method generates random variable names for the variables in the target RTL file, updates the target RTL file according to the corresponding relation between the variables and the random variable names to obtain the encrypted RTL file, and firstly can encrypt and protect the variables in the target RTL file to ensure the safety of the RTL file; meanwhile, because the RTL file is not encrypted by using an external encryption tool, the encrypted RTL file obtained by the method does not need the external encryption tool to participate in the simulation process, so that the interference of the external encryption tool to the simulation of the encrypted RTL file in the related technology can be effectively avoided, the target RTL file is effectively encrypted, and meanwhile, the simulation efficiency of the encrypted RTL file can be improved. The invention also provides an RTL file encryption device, electronic equipment and a storage medium, which have the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of an RTL file encryption method according to an embodiment of the present invention;
FIG. 2 is a flowchart of another RTL file encryption method according to an embodiment of the present invention;
fig. 3 is a block diagram of an RTL file encryption apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the related art, the RTL file is mainly encrypted by using external encryption tools such as EDA (Electronic Design Automation) tools or synthesized netlists, however, the RTL file encrypted by the above method still needs these external encryption tools to participate in the simulation, when the size of the RTL file is increased and the complexity of the RTL file is increased, the above encryption method will severely limit the simulation efficiency of the RTL file, and the RTL file is difficult to debug, even has abnormal simulation errors. In view of this, the present invention provides an RTL file encryption method, which can effectively encrypt a target RTL file by using a correspondence between a variable in the target RTL file and a random variable name, without using an external encryption tool, and can effectively avoid interference of the external encryption tool on simulation of the encrypted RTL file in the related art. Referring to fig. 1, fig. 1 is a flowchart of an RTL file encryption method according to an embodiment of the present invention, where the method includes:
s101, searching variables contained in the target RTL file.
It should be noted that, the embodiment of the present invention does not limit the specific way of searching for the variable, and reference may be made to the related art of searching for the variable.
And S102, generating a random variable name for the variable by using the HDL naming rule.
The embodiment of the invention adopts the random variable name as the variable in the target RTL file for name change so as to encrypt the target RTL file. Because the RTL design corresponding to the RTL file is not influenced after the variable is subjected to name-changing encryption, and the simulation of the RTL file is not interfered because the variable does not depend on external encryption tools such as a comprehensive netlist and the like, the embodiment of the invention utilizes the random variable name to carry out name-changing on the variable in the target RTL file, can effectively encrypt the RTL, and can ensure that the encrypted RTL file can carry out simulation test efficiently.
It should be noted that the programming language for writing the RTL file is Verilog HDL, which is a hardware description language, and describes the structure and behavior of the digital system hardware in text form, and in the development process, the variable name in the RTL file should conform to the HDL naming rule to ensure that the variable name is legal. Because the random variable name is used for renaming the variable in the target RTL file, and the random variable name also accords with the HDL naming rule, the random variable name is generated by adopting the HDL naming rule in the embodiment of the invention, and the generation of the compliant random variable name can be ensured.
Furthermore, it should be noted that the embodiment of the present invention does not limit the specific manner of generating the random variable name for the variable by using the HDL naming rule, for example, a preset regular expression may be generated according to the HDL naming rule, and the random variable name may be generated according to the regular expression; of course, a system random value generation function may also be called to generate an initial random character string, and the initial random character string is updated by using the HDL naming rule to obtain a random variable name. Because the second method is simple and efficient, and simultaneously, the diversity of random variable names can be effectively ensured, in the embodiment of the present invention, the specific method for generating random variable names for variables by using HDL naming rules may be: calling a system random value generating function to generate an initial random character string, and then updating the initial random character string by using an HDL naming rule to obtain a random variable name.
In one possible scenario, random variable names are generated for variables using HDL naming rules, including:
step 11: and determining the number of variables, and calling a system random value generation function to generate random character strings with corresponding number.
It should be noted that, the embodiment of the present invention does not limit the specific system random value generation function, and reference may be made to related technologies, and since the system random value generation function does not generate a random character string according to a certain fixed pattern, the random character string generated in the embodiment of the present invention cannot be cracked reversely. The length of the random character string is not limited, and the random character string can be set according to the actual application requirement. The embodiment of the present invention also does not limit the characters that can be used for generating the random character string, such as letters, numbers, special characters (underlines, short horizontal lines, etc.), and the like, and can be set according to the actual application requirements. Of course, in order to improve the adjustment efficiency of adjusting the random character string by using the HDL naming convention, when setting the usable character, the setting can be performed by referring to the HDL naming convention.
Step 12: and adjusting the random character string by using an HDL naming rule to obtain a random variable name.
Further, since the variable name is used for uniquely identifying the variable, in order to ensure that the random variable name can correspond to the variable one to one, after the random variable name is obtained, whether a repeated random variable name exists can be determined, and the repeated random variable name is updated to ensure that the random variable name is unique, so that the random variable name can correspond to the variable one to one.
In one possible case, after generating random variable names for the variables using the HDL naming rule, the method may further include:
step 21: judging whether the random variable names are repeated or not; if yes, go to step 22; if not, go to step 23.
It should be noted that the embodiment of the present invention does not limit the specific way of determining whether the random variable values are repeated, and reference may be made to the related technology of string comparison.
Step 22: repeated random variable names are updated using HDL naming rules.
It will be appreciated that the update may be to regenerate random variable names using HDL naming rules. Of course, after the update, it may be determined again whether the updated random variable name is repeated until all the random variable names are unique.
Step 23: duplicate random variable names are not updated using HDL naming rules.
Step 24: and executing the step of establishing the corresponding relation between the utilization variable and the random variable name by using the updated random variable name.
S103, establishing a corresponding relation by using the variable and the random variable name, and updating the target RTL file according to the corresponding relation to obtain the encrypted RTL file.
After the random variable name is obtained, the corresponding relation between the variable and the random variable name is established, and the variable in the target RTL file can be renamed by using the random variable name according to the corresponding relation. After all variables are renamed, an encrypted RTL file is obtained.
It can be understood that, when some variables are special variables that need to be debugged intensively, the debugging of the variables is inconvenient if the names of the variables are changed by random names, so that marks can be added to the special variables to avoid the influence of the names on the debugging. It should be noted that, the embodiment of the present invention does not limit the type of the mark, and for example, the mark may be a preset prefix, a preset suffix, or a combination of the preset prefix and the preset suffix, and may be set according to the actual application requirements. The embodiment of the invention also does not limit the specific character contents of the preset prefix and the preset suffix, and can be set according to the actual application requirements.
In one possible case, establishing a correspondence relationship between the variable and the random variable name may include:
step 31: judging whether the variable is a designated variable or not; if not, go to step 32; if yes, go to step 33.
It will be appreciated that a particular specified variable may be added to a specified variable table, and that the specified variable table may be used to match the variable to determine if the variable is a specified variable.
Step 32: establishing a corresponding relation between random variable names and variables;
step 33: and adding a preset prefix and/or a preset suffix corresponding to the variable for the random variable name, and establishing a corresponding relation between the added random variable name and the variable.
It should be noted that the embodiment of the present invention does not limit the specific form of the corresponding relationship, for example, the corresponding relationship may be a key value pair, and an appropriate data structure may be selected according to the actual application requirement.
Finally, for convenience of debugging, management and decryption, after the corresponding relationship is generated, the corresponding relationship can also be output so as to reserve the corresponding relationship.
In one possible case, after establishing the correspondence relationship between the variable and the random variable name, the method may further include:
step 41: and outputting the corresponding relation.
It should be noted that the embodiment of the present invention is not limited to a specific output form, for example, the correspondence is output to a correspondence table or other file types, and the output may be set according to actual application requirements.
Based on the embodiment, the method generates random variable names for variables in the target RTL file, updates the target RTL file according to the corresponding relation between the variables and the random variable names to obtain an encrypted RTL file, and firstly can encrypt and protect the variables in the target RTL file to ensure the safety of the RTL file; meanwhile, because the RTL file is not encrypted by using an external encryption tool, the encrypted RTL file obtained by the method does not need the external encryption tool to participate in the simulation process, so that the interference of the external encryption tool to the simulation of the encrypted RTL file in the related technology can be effectively avoided, the target RTL file is effectively encrypted, and meanwhile, the simulation efficiency of the encrypted RTL file can be improved.
The RTL file encryption method described above is specifically described below with reference to specific flowcharts. Referring to fig. 2, fig. 2 is a flowchart illustrating another RTL file encryption method according to an embodiment of the present invention. In one possible case, the process of the RTL file encryption method may include:
1. searching variables contained in the target RTL file;
2. determining the number of variables, and calling a system random value generation function to generate random character strings with corresponding number;
3. adjusting the random character string by using an HDL naming rule to obtain a random variable name;
4. judging whether the random variable names are repeated or not; if yes, entering step 5; if not, entering step 6;
5. updating repeated random variable names by using an HDL naming rule;
6. judging whether the variable is a designated variable or not; if yes, entering step 7; if not, entering step 8;
7. adding a preset prefix and/or a preset suffix corresponding to a variable to a random variable name, and establishing a corresponding relation between the added random variable name and the variable;
8. establishing a corresponding relation between random variable names and variables;
9. and outputting the corresponding relation, and updating the target RTL file according to the corresponding relation to obtain the encrypted RTL file.
The following describes an RTL file encryption apparatus, an electronic device, and a storage medium according to embodiments of the present invention, and the RTL file encryption apparatus, the electronic device, and the storage medium described below and the RTL file encryption method described above may be referred to in a corresponding manner.
Referring to fig. 3, fig. 3 is a block diagram of an RTL file encryption apparatus according to an embodiment of the present invention, where the apparatus may include:
a searching module 301, configured to search for a variable included in a target RTL file;
a generating module 302, configured to generate a random variable name for the variable by using the HDL naming rule;
the updating module 303 is configured to establish a corresponding relationship between the variable and the random variable name, and update the target RTL file according to the corresponding relationship to obtain an encrypted RTL file.
Optionally, the generating module 302 may include:
the random character string generation submodule is used for determining the number of variables and calling a system random value generation function to generate random character strings with corresponding number;
and the random variable name generation submodule is used for adjusting the random character string by using the HDL naming rule to obtain a random variable name.
Optionally, the apparatus may further include:
the judging module is used for judging whether the random variable names are repeated or not;
the updating module is used for updating the repeated random variable names by using the HDL naming rule if the random variable names are the same as the HDL naming rule;
and the processing module is used for executing the step of establishing the corresponding relation between the utilization variable and the random variable name by using the updated random variable name.
Optionally, the updating module 303 may include:
the judgment submodule is used for judging whether the variable is a specified variable or not;
the first processing module is used for establishing a corresponding relation between the random variable name and the variable if the random variable name is not the same as the variable name;
the second processing module is used for adding a preset prefix and/or a preset suffix corresponding to the variable to the random variable name if the random variable name is the same as the preset prefix and/or the preset suffix, and establishing a corresponding relation between the random variable name and the variable after the addition;
and the updating submodule is used for updating the target RTL file according to the corresponding relation to obtain the encrypted RTL file.
Optionally, the apparatus may further include:
and the output module is used for outputting the corresponding relation.
An embodiment of the present application further provides an electronic device, including:
a memory for storing a computer program;
a processor for implementing the steps of the data writing method when executing the computer program.
Since the embodiment of the electronic device portion corresponds to the embodiment of the RTL file encryption method portion, reference is made to the description of the embodiment of the RTL file encryption method portion for the embodiment of the electronic device portion, and details are not repeated here.
The embodiment of the present application further provides a storage medium, where a computer program is stored on the storage medium, and when the computer program is executed by a processor, the steps of the RTL file encryption method according to any of the above embodiments are implemented. The method comprises the steps of searching variables contained in a target RTL file if a computer program is executed by a processor; generating random variable names for variables by using HDL naming rules; and establishing a corresponding relation by using the variable and the random variable name, and updating the target RTL file according to the corresponding relation to obtain the encrypted RTL file.
Since the embodiment of the storage medium portion corresponds to the embodiment of the RTL file encryption method portion, please refer to the description of the embodiment of the RTL file encryption method portion for the embodiment of the storage medium portion, which is not repeated here.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The RTL file encryption method, apparatus, electronic device and storage medium provided by the present invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. An RTL file encryption method, comprising:
searching variables contained in the target RTL file;
generating random variable names for the variables by using HDL naming rules;
and establishing a corresponding relation by using the variable and the random variable name, and updating the target RTL file according to the corresponding relation to obtain an encrypted RTL file.
2. The RTL file encryption method of claim 1, wherein said generating random variable names for said variables using HDL naming rules comprises:
determining the number of the variables, and calling a system random value generation function to generate random character strings corresponding to the number;
and adjusting the random character string by using the HDL naming rule to obtain the random variable name.
3. The RTL file encryption method according to claim 1, further comprising, after generating random variable names for the variables using HDL naming rules:
judging whether the random variable names are repeated or not;
if yes, updating the repeated random variable name by using the HDL naming rule;
and executing the step of establishing the corresponding relation between the variable and the random variable name by using the updated random variable name.
4. The RTL file encryption method according to claim 1, wherein the establishing a correspondence relationship between the variable and the random variable name comprises:
judging whether the variable is a designated variable or not;
if not, establishing the corresponding relation by using the random variable name and the variable;
if so, adding a preset prefix and/or a preset suffix corresponding to the variable to the random variable name, and establishing the corresponding relation by using the added random variable name and the variable.
5. The RTL file encryption method according to claim 1, further comprising, after establishing a correspondence relationship between the variable and the random variable name:
and outputting the corresponding relation.
6. An RTL file encryption apparatus, comprising:
the searching module is used for searching variables contained in the target RTL file;
the generating module is used for generating random variable names for the variables by using HDL naming rules;
and the updating module is used for establishing a corresponding relation between the variable and the random variable name and updating the target RTL file according to the corresponding relation to obtain an encrypted RTL file.
7. The RTL file encryption device according to claim 1, wherein the generating module comprises:
the random character string generation submodule is used for determining the number of the variables and calling a system random value generation function to generate random character strings corresponding to the number;
and the random variable name generation submodule is used for adjusting the random character string by utilizing the HDL naming rule to obtain the random variable name.
8. The RTL file encryption device according to claim 1, further comprising:
the judging module is used for judging whether the random variable names are repeated or not;
the updating module is used for updating repeated random variable names by using the HDL naming rule if the random variable names are the same as the HDL naming rule;
and the processing module is used for executing the step of establishing the corresponding relation between the variable and the random variable name by using the updated random variable name.
9. An electronic device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the RTL file encryption method according to any one of claims 1 to 5 when executing the computer program.
10. A storage medium, characterized in that the storage medium has stored thereon a computer program which, when being executed by a processor, implements the steps of the RTL file encryption method according to any one of claims 1 to 5.
CN202110747576.4A 2021-07-01 2021-07-01 RTL file encryption method and device, electronic equipment and storage medium Pending CN113420311A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102254125A (en) * 2010-05-21 2011-11-23 腾讯科技(北京)有限公司 ELF (element list file) encrypting method and system
CN102542191A (en) * 2010-12-31 2012-07-04 深圳市证通电子股份有限公司 RTL (register transfer level) IP (intellectual property) core protecting method
CN108052838A (en) * 2017-11-23 2018-05-18 北京智芯微电子科技有限公司 The leakage positioning system and method for chip encryption design
CN109960879A (en) * 2019-03-25 2019-07-02 福州大学 A kind of system level chip Security Design Methods based on insincere IP kernel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102254125A (en) * 2010-05-21 2011-11-23 腾讯科技(北京)有限公司 ELF (element list file) encrypting method and system
CN102542191A (en) * 2010-12-31 2012-07-04 深圳市证通电子股份有限公司 RTL (register transfer level) IP (intellectual property) core protecting method
CN108052838A (en) * 2017-11-23 2018-05-18 北京智芯微电子科技有限公司 The leakage positioning system and method for chip encryption design
CN109960879A (en) * 2019-03-25 2019-07-02 福州大学 A kind of system level chip Security Design Methods based on insincere IP kernel

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