JP4961943B2 - Development support program, development support method, and development support apparatus - Google Patents

Description

  The present invention relates to a development support program, a development support method, and a development support apparatus, and more particularly to a development support program, a development support method, and a development support apparatus that provide information that satisfies security countermeasure requirements.

In recent years, security incidents due to software vulnerabilities have occurred frequently, and the importance of software security has attracted attention.
However, at the software development site, the systematization of work necessary for ensuring security quality is currently insufficient. For example, in a development site where security knowledge is scarce, there is a problem that it is not known what and how much to do to ensure security. In addition, it is difficult for project managers to see the costs (security costs, man-hours, etc.) for ensuring security quality, and it is difficult to evaluate the quality of the completed system, so it is difficult to make security investments.

Various methods are known to support developers who lack security knowledge for such problems (see, for example, Patent Document 1).
JP 2001-222420 A

  However, the conventional software development system is not sufficient in terms of ensuring and guaranteeing security-related quality. Unlike general bugs in software, security vulnerabilities sometimes behave unintentionally, even if they meet the original specifications. It is difficult to detect them in a test for confirming whether they are “in accordance with specifications”, and it is also difficult to describe a design specification that “does not behave unintentionally” with conventional methods. Even if a design that satisfies the security requirements is performed, vulnerabilities may be mixed in at the stage of implementation.

  The present invention has been made in view of the above points, and provides a development support program, a development support method, and a development support apparatus that can easily and reliably obtain the work necessary to satisfy the security requirements. With the goal.

In order to solve the above problem, the present invention provides a development support program for causing the computer 1 to execute the processing as shown in FIG.
The development support program according to the present invention is a program that provides information that satisfies security countermeasure requirements. The function shown in FIG. 1 is realized by causing the computer 1 to execute such a development support program.

  The storage means 2 includes security countermeasure requirements, a plurality of implementation method definition information for solving the security countermeasure requirements, work information necessary for executing the implementation method for each implementation method definition information, and information for each of these work information. Implementation information 3 having a security assurance level that guarantees security countermeasure requirements calculated for each implementation method definition information in accordance with the parameters given to is stored.

  The presentation unit 4 refers to the implementation information 3 in response to the input of the security countermeasure requirement by the third party and the security countermeasure execution requirement including the elements for executing the security countermeasure requirement, and is input by the third party. Implementation method definition information corresponding to the required security countermeasure requirements is presented.

  In response to the selection by the third party for the presentation of the implementation method definition information, the calculation means 5 sets the execution cost of the element of the security countermeasure execution requirement for each piece of work information of the selected implementation method definition information. Calculate using.

The output unit 6 outputs the execution cost of the element calculated by the calculation unit 5 together with the security assurance level.
According to such a development support program, the storage unit 2 stores the mounting information 3 including security countermeasure requirements, a plurality of mounting method definition information, work information, and a security assurance level. The presentation unit 4 refers to the implementation information 3 in response to the input of the security countermeasure requirement and the security countermeasure execution requirement by a third party, and presents the implementation method definition information corresponding to the security countermeasure requirement input by the third party. The In response to the selection for the presentation of the mounting method definition information, the calculation means 5 calculates the elements of the security countermeasure execution requirement using the parameters given for each piece of work information of the selected mounting method definition information. The output means 6 outputs the execution cost of the element calculated by the calculation means 5 together with the security assurance level.

  According to the present invention, candidates for implementation means to be given to a third party are presented, and elements (for example, work quality, quantity, cost, etc.) necessary for executing security countermeasure requirements at an early stage of development are easily and clearly defined. Can grasp.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, an outline of the present invention will be described, and then an embodiment will be described.
FIG. 1 is a diagram showing an outline of the present invention. A computer 1 shown in FIG. 1 is an apparatus that executes a program that provides information that satisfies security countermeasure requirements.

The computer 1 includes storage means 2, presentation means 4, calculation means 5, output means 6, and mounting information creation means 7.
The storage means 2 includes security countermeasure requirements, a plurality of implementation method definition information for solving the security countermeasure requirements, work information necessary for executing the implementation method for each implementation method definition information, and information for each of these work information. The mounting information 3 including the security assurance level calculated for each mounting method definition information in accordance with the parameters given to is stored. The security assurance level is, for example, a value that guarantees security countermeasure requirements.

  This mounting information is created by, for example, the mounting information creating means 7. Here, the parameter refers to, for example, a false detection rate, a detection failure rate, a procurement cost when using the tool, and the like.

  In FIG. 1, four mounting method definition information B1, B2, B3, and B4 are associated with one security countermeasure requirement A. The work information C1 and C2 are associated with the mounting method definition information B1, B2, B3, and B4, respectively. Furthermore, security assurance levels D1, D2, D3, and D4 are associated with the mounting method definition information B1, B2, B3, and B4, respectively.

  In response to the input of the security countermeasure requirement by a third party and the security countermeasure execution requirement having an element for executing this security countermeasure requirement, the presenting means 4 refers to the implementation information 3 and inputs by the third party Implementation method definition information corresponding to the specified security countermeasure requirements is presented.

  In response to the selection by the third party for the presentation of the implementation method definition information, the calculation means 5 sets the execution cost of the element of the security countermeasure execution requirement for each piece of work information of the selected implementation method definition information. Calculate using. Here, the elements refer to information such as the number of security specialists, the number of non- (security) specialists, the presence of tools, the program scale, and the unit cost of workers.

The output unit 6 outputs the execution cost (estimated information) of the element calculated by the calculation unit 5 together with the security assurance level.
According to such a development support program, the storage unit 2 stores the mounting information 3 including security countermeasure requirements, a plurality of mounting method definition information, work information, and a security assurance level. The presentation unit 4 refers to the implementation information 3 in response to the input of the security countermeasure requirement and the security countermeasure execution requirement by a third party, and presents the implementation method definition information corresponding to the security countermeasure requirement input by the third party. The In response to the selection for the presentation of the mounting method definition information, the calculation means 5 calculates the elements of the security countermeasure execution requirement using the parameters given for each piece of work information of the selected mounting method definition information. The output means 6 outputs the execution cost of the element calculated by the calculation means 5 together with the security assurance level.

Embodiments of the present invention will be described below.
FIG. 2 is a diagram illustrating a hardware configuration example of the development support apparatus.
The development support apparatus (computer) 100 is entirely controlled by a CPU (Central Processing Unit) 101. A random access memory (RAM) 102, a hard disk drive (HDD) 103, a graphic processing device 104, an input interface 105, and a communication interface 106 are connected to the CPU 101 via a bus 107.

  The RAM 102 temporarily stores at least part of an OS (Operating System) program and application programs to be executed by the CPU 101. The RAM 102 stores various data necessary for processing by the CPU 101. The HDD 103 stores an OS and application programs. A program file is stored in the HDD 103.

  A monitor 11 is connected to the graphic processing device 104. The graphic processing device 104 displays an image on the screen of the monitor 11 in accordance with a command from the CPU 101. A keyboard 12 and a mouse 13 are connected to the input interface 105. The input interface 105 transmits a signal transmitted from the keyboard 12 or the mouse 13 to the CPU 101 via the bus 107.

  The communication interface 106 is connected to the network 10. The communication interface 106 transmits / receives data to / from another computer via the network 10.

  With the hardware configuration as described above, the processing functions of the present embodiment can be realized. In order to perform development support processing in an apparatus having such a hardware configuration, the following functions are provided in the development support apparatus 100.

FIG. 3 is a block diagram illustrating functions of the development support apparatus.
The development support apparatus 100 includes a mounting means storage information creation unit 110, a mounting means storage information storage unit 120, and an estimate information creation unit 130.

  The mounting means accumulated information creation unit 110 accepts an operation input from the security expert 41. Specifically, the mounting means accumulated information creation unit 110 has a GUI (Graphical User Interface), and displays various screens such as a mounting means input acceptance screen on the screen of the monitor 11.

  Further, the mounting means accumulated information creating unit 110 creates (edits) the mounting means accumulated information table 121 according to an operation input using a GUI from the user, and accumulates it in the mounting means accumulated information storage unit 120.

  When creating new data, the security expert 41 operates to instruct the creation of new data. Then, the mounting means accumulated information creation unit 110 launches an input reception screen and displays it on the monitor 11.

  At the time of data editing, the security expert 41 performs an operation and designates the mounting means storage information table 121 stored in the HDD 103. Then, the mounting means storage information creation unit 110 reads the mounting means storage information table 121 from the HDD 103 and displays an input reception screen reflecting the contents on the monitor 11.

The security expert 41 creates or edits the mounting means storage information table 121 on the input reception screen.
Further, the contents of the operation input by the security expert 41 are monitored by the mounting means accumulated information creation unit 110 and stored in the mounting means accumulated information table 121 as appropriate.

The mounting means storage information storage unit 120 is a data storage area in which the mounting means storage information table 121 is stored (recorded).
The estimate information creating unit 130 receives an estimate operation input from the project manager 51. The project manager 51 does not necessarily need to be a security expert.

  The estimate information creation unit 130 has a GUI, and displays an estimate input acceptance screen on the screen of the monitor 11. Then, estimate information is created (edited) in accordance with an operation input using a GUI from the user. The generated estimate information is displayed on the screen of the monitor 11 and stored in the HDD 103, for example.

  By the way, the processing of the development support apparatus 100 is (1) mainly creating the mounting means storage information table 121 using the mounting means storage information creation section 110, and (2) mainly using the mounting means storage information storage section 120 and the estimate information creation section 130. The work estimate used and the creation of instructions can be roughly divided into two. Each will be described in detail below.

<1> Creation of Mounting Means Storage Information Table 121 FIG. 4 is a flowchart showing a mounting means storage information table creation process.
The following operation is performed by the mounting means accumulated information creation unit 110.

First, when an input of system requirements is received from the security expert 41, the contents are stored in the mounting means accumulation information table 121 (step S1).
Here, the system requirements include, for example, a program language, middleware, software, and the like.

Next, when an input of security requirements is received from the security specialist 41, the contents are stored in the mounting means accumulation information table 121 (step S2).
Here, the security requirement means a countermeasure policy at the software requirement level against a specific threat assumed in the software. For example, “(in Web application development) so that there is no cross-site scripting (XSS) vulnerability. Mounting "and the like.

Next, when the input of the mounting means (mounting method definition information) is received from the security expert 41, the contents are stored in the mounting means accumulation information table 121 (step S3).
Here, the implementation means refers to a method that can be recommended as a countermeasure and can be clearly specified as a constraint in the form of a coding rule among methods for implementing security requirements in the design and implementation process. For example, “(XSS countermeasure) Use a specified output tag (<bean: write>). "

Next, when an alternative means input is received from the security expert 41, the contents are stored in the mounting means accumulated information table 121 (step S4).
Here, an alternative means is a means for implementing security requirements, but means a sub-optimal measure that does not satisfy the conditions of the above-mentioned implementation means. For example, “Perform XSS black box audit by a third party” Etc. ".

  Next, when an input of information indicating the mutual relationship between the mounting means and the alternative means is received from the security specialist 41, the contents are stored in the mounting means accumulated information table 121 (step S5).

Next, a guarantee level calculation process of the mounting means is performed (step S6).
Next, it is determined whether other security requirements exist (step S7). When other security requirements exist (Yes in step S7), the process proceeds to step S2 and the operations in steps S2 to S6 are repeated. On the other hand, if there is no other security requirement (No in step S6), it is determined whether there is another system requirement (step S8). When other system requirements exist (Yes in step S8), the process proceeds to step S1 and the operations in steps S1 to S7 are repeated. On the other hand, if there is no other system requirement (No in step S8), the mounting means storage information table 121 is stored in the mounting means storage information storage unit 120 (step S9).

This completes the mounting means storage information table creation process.
Next, the guarantee level calculation process of the mounting means in step S6 will be described.
FIG. 5 is a flowchart showing a guarantee level calculation process of the mounting means.

First, when an input of a constraint pattern is received from the security expert 41, the content is stored in the mounting means accumulation information table 121 (step S61).
Next, the mounting means and the alternative means are disassembled into a plurality of parts (step S62).

Next, it is determined whether or not it is necessary to calculate a guarantee level (security guarantee level) for each disassembled part (step S63).
Next, it is determined whether or not security knowledge is necessary for the portion that requires calculation in step S63 (step S64). When security knowledge is unnecessary (No in step S64), a detailed information item corresponding to the part that requires calculation is set (step S65).

Next, when input of values (parameters) is received for the detailed information items, these values are stored in association with the detailed information items (step S66).
On the other hand, if security knowledge is necessary (Yes in step S64), detailed information items corresponding to the portions that require calculation are set (step S67).

Next, values are calculated for the detailed information items, and these values are stored in association with the detailed information items (step S68).
Next, a guarantee level is calculated based on the value associated with the detailed information item, and stored in association with the mounting means and the alternative means (step S69).

Thereafter, the process returns to the original routine.
This completes the guarantee level calculation processing of the mounting means.
Hereinafter, the mounting means accumulated information table creation processing will be described using a specific example.

FIG. 6 is a diagram showing input of system requirements.
When the security specialist 41 inputs the system requirements, the mounting means storage information creation unit 110 stores the system requirements in the system requirements column of the mounting means storage information table 121.

FIG. 7 is a diagram showing input of security requirements.
When the security expert 41 inputs a plurality of security requirements for each system requirement, the security means is associated with each system requirement by the mounting means storage information creation unit 110 and stored in the security requirement column of the mounting means storage information table 121. Is done.

FIG. 8 is a diagram showing the input of the mounting means. Hereinafter, a part of the mounting means accumulation information table 121 is omitted.
When the security expert 41 inputs a plurality of mounting means for each security requirement, the mounting means is associated with each security requirement and stored in the mounting means column of the mounting means accumulation information table 121. In FIG. 8, two mounting means are associated with one security requirement and stored. One mounting means may be associated with a plurality of security requirements.

FIG. 9 is a diagram showing the input of the alternative means.
When the security expert 41 inputs alternative means (alternative method definition information) for each mounting means, the alternative means is associated with each mounting means and stored in the alternative means column of the mounting means storage information table 121. FIG. 9 shows a case where a common alternative means is input to each mounting means, but when a plurality of alternative means are input to one mounting means, a plurality of alternative means are provided. , Stored in association with each mounting means.

FIG. 10 is a diagram showing the input of the mutual relationship.
When the security specialist 41 inputs the correlation between the security requirement and the implementation means and the correlation between the implementation means and the alternative means, the correlation between the security requirement and the implementation means and the correlation between the implementation means and the alternative means are implemented. They are stored in the interrelation fields of the means storage information table 121, respectively. Thereby, each relationship can be made clear. Further, the mounting means and the alternative means which are in mutual relation may be grouped and given an alias. Thereby, management can be performed easily.

Here, the security expert 41 can input “AND”, “OR”, or “XOR” as a mutual relationship.
“AND” refers to a relationship that must be combined with other means in order to satisfy the requirements.

“OR” refers to a relationship in which requirements can be satisfied by any one means including other means.
“XOR” refers to a relationship in which requirements can be satisfied by any one means and cannot be used in combination with other means.

Note that the alternative means is set in an “OR” relationship with the mounting means. Further, the relationship of “XOR” can be set only between mounting means and only between alternative means.
In the following, the implementation means “only use java.sql.PreparedStatement (java: registered trademark) for issuing SQL statements” is referred to as implementation means (a), and the implementation means “dangerous just before SQL execution” “Escape character” is referred to as implementation means (b), and alternative means “third-party audit in black box format” is referred to as alternative means (I).

When each requirement and each means up to here are inputted, the mounting means accumulated information creation unit 110 launches a restriction pattern screen and displays it on the monitor 11.
FIG. 11 is a diagram illustrating the constraint pattern screen.

  In the restriction column of the restriction pattern screen 111, restrictions imposed on the mounting means and the alternative means are set. In the constraint pattern column, the constraint pattern when the constraint is imposed when the constraint of the item indicated in the constraint column and the item indicated in the implementation range specification column is imposed and when the constraint is not imposed are respectively encoded and shown. Yes.

  For example, when imposing restrictions on “specific component compulsory” and “no mounting range designation” on the mounting means (a), the security expert 41 selects the constraint pattern P2. Then, the mounting means (a) and the constraint pattern P2 are associated with each other and stored in the mounting means accumulation information table 121.

  Similarly, when imposing restrictions on “forcing a specific procedure” and “with implementation range specified” on the implementation means (b), the security expert 41 selects the constraint pattern P5. Then, the mounting means (b) and the constraint pattern P5 are associated with each other and stored in the mounting means accumulation information table 121. Further, when “no constraint” is designated for the alternative means (I), the security expert 41 selects the constraint pattern P8. Then, the alternative means (I) and the restriction pattern P8 are associated with each other and stored in the mounting means accumulation information table 121. Cost conversion can be efficiently performed by these patterning.

When the operations so far are performed, the mounting means accumulated information creating unit 110 disassembles each mounting means and each alternative means associated with the constraint pattern into three parts.
FIG. 12 is a diagram showing an exploded view of the mounting means and the alternative means. In FIG. 12, the mounting means accumulated information creation unit 110 disassembles each mounting means and each alternative means into a “constraint part”, a “constraint part detection part”, and a “constraint violation detection part”, respectively.

Then, based on the constraint pattern and the constraint pattern efficiency table prepared in advance, it is determined whether or not a guarantee level needs to be calculated for each decomposed item.
FIG. 13 shows a constraint pattern efficiency table.

The constraint pattern efficiency table 122 is divided into a constraint pattern portion and a calculation portion at each location.
In the constraint pattern portion, a constraint column and a mounting range designation column on the constraint pattern screen 111 and items corresponding to these columns are set.

  In the calculation part of each part, columns corresponding to the items decomposed in FIG. 12 are provided. In each of these fields, the necessity of calculation of the guarantee level or the necessity of calculation is set corresponding to the pattern portion of the constraint.

FIG. 14 is a diagram illustrating a result of setting necessity of calculation using the constraint pattern efficiency table.
The mounting means storage information creation unit 110 stores in the mounting means storage information table 121 the necessity of calculation of the constraint pattern for each part of the mounting means and alternative means obtained using the constraint pattern efficiency table 122.

Next, the mounting means accumulated information creation unit 110 sets a detailed information item for a portion that is “calculation required” in the column of necessity of calculation.
FIG. 15 is a diagram showing a mounting means accumulation information table in which detailed information items are set.

  The security expert 41 inputs detailed information items. Then, the mounting means accumulated information creation unit 110 creates detailed information fields corresponding to the calculation necessity portions of the mounting means accumulated information table 121, and sets the detailed information items in the detailed information fields. Set. Here, the procurement cost refers to a cost necessary for procurement of a tool for executing the mounting means or detecting a constraint violation.

When the detailed information item is set, the mounting means accumulated information creation unit 110 launches a detectability selection screen and displays it on the monitor 11.
FIG. 16 is a diagram for explaining a detectability selection screen.

On the detectability selection screen 112, patterns corresponding to the respective items in the detectability column are shown.
The security expert 41 assigns these patterns to the portions that are “calculation required” in the calculation necessity column. For example, when the detection portion of the constraint violation can be mechanically detected by the tool, the pattern E1 is assigned. In addition, since it is determined that each restriction portion column of the mounting means (a) and the mounting means (b) can be detected at the character string search level, a value prepared in advance is entered. Exclude from calculation. The character string search level refers to a level that can be (e.g., checked for violation) with the same ease as checking whether a fixed character string exists in the source code, such as grep.

  When the pattern is assigned, the mounting means accumulated information creating unit 110 sets the value of the item “necessity of security knowledge” in the detailed information of the mounting means to which the security expert 41 assigned the pattern E1 in the mounting means accumulated information table 121. Is set to “necessary”, and the security expert 41 assigns the patterns E2 and E3 to “necessary”.

<When security knowledge is not required>
The mounting means accumulated information creating unit 110 starts up an unset item input screen for detailed information in the mounting information in which the security knowledge “unnecessary” is set, and displays it on the monitor 11.

FIG. 17 is a diagram showing an unset item input screen.
The security expert 41 inputs a value (parameter) corresponding to each detailed information item in the value column of the unset item input screen 113.

FIG. 18 is a diagram illustrating a mounting means accumulation information table in which unset items are input.
The value input by the security specialist 41 is stored in the mounting means storage information table 121 by the mounting means storage information creation unit 110.

<If you need security knowledge>
The mounting means accumulated information creating unit 110 starts up an unset item input screen 114 for detailed information in the mounting information in which the security knowledge “necessary” is set, and displays it on the monitor 11.

FIG. 19 is a diagram showing an unset item input screen.
The security expert 41 inputs a value corresponding to each detailed information item in the value column of the unset item input screen 114. Further, in the case of a tool registered in the database, detailed information of the tool may be automatically input by the mounting means accumulated information creation unit 110.

FIG. 20 is a diagram showing a mounting means accumulation information table in which unset items are input.
The value input by the security specialist 41 is stored in the mounting means storage information table 121 by the mounting means storage information creation unit 110.

Further, the mounting means accumulated information creation unit 110 calculates the value in the column of additional man-hours per unit program scale by calculation.
Here, the man-hour of the tool (per unit program): d
Tool detection omission rate: e
Tool false detection rate: f
Man-hours required for security experts to reduce detection omissions by 1%: g
Man-hours required for non-experts to reduce detection omissions by 1%: h
Man-hours required for security experts to reduce detection omissions by 1%: i
Man-hours required for non-experts to reduce detection omission by 1%: j
Then, the additional man-hour per unit program scale (in the case of a security expert) can be obtained by (d + e × g + f × i). Therefore, in the example shown in FIG. 19, (0.5 + 20 × 0.03 + 30 × 0.01) = 0.9.

  Further, the additional man-hour per unit program scale (in the case of a non-expert) can be obtained by (d + e × h + f × j). Therefore, in the example shown in FIG. 19, (0.5 + 20 × 0.1 + 30 × 0.05) = 4.

Note that information necessary for such calculation may be preliminarily tabulated and stored in the development support apparatus 100 and referred to by the mounting means accumulation information creation unit 110.
Next, the mounting means accumulated information creation unit 110 calculates a guarantee level when executing the security requirement.

FIG. 21 is a diagram illustrating calculation of the guarantee level.
In the example of FIG. 21, the guarantee level of each detected part is calculated by (100− (false negative)), and the largest value among the calculated guarantee levels is set as the guarantee level of the mounting means (alternative means). In the present embodiment, the guarantee level of the mounting means (a) is “95”.

Note that the guarantee level can be obtained by creating the same data structure for the mounting means (b) and the alternative means (I).
The development support apparatus 100 repeats the above-described operation for each system requirement and security requirement, and completes the mounting means accumulation information table 121 in which the assurance levels for all system requirements and security requirements are calculated.

  In this way, by limiting the implementation means, it is possible to limit confirmation of satisfaction of the security requirements to the scope of the implementation means by confirming compliance with constraints (or violation). In addition, when it is known that the security requirements can be satisfied by the implementation of the implementation means, the accuracy of confirmation of compliance with the implementation means can be used as the satisfaction degree (guarantee) of the security requirements. Thus, by deriving the work amount and work contents from the ease of confirmation of the mounting means, it is possible to create the mounting means storage information table 121 for easily estimating the work required for the security requirements.

Also, by defining alternative means, it is possible to prepare the next best means for satisfying the security requirements, and the degree of freedom of selection is expanded.
Further, by defining the mutual relationship, it is possible to reliably eliminate duplication between the mounting means or between the mounting means and the alternative means, and to complement the shortage means.

  Further, by using the constraint pattern efficiency table 122 or displaying the detectability selection screen 112 and allowing the security specialist 41 to input the patterns E1 to E3, the efficiency of each partial calculation can be further improved. it can.

<2> Estimate Information Creation Next, estimate information creation processing will be described.
First, a rough flow will be described using a flowchart, and then each step will be described in detail.

FIG. 22 is a flowchart showing the estimation information creation process. The following operation is performed by the estimate information creation unit 130.
First, in response to a request from the project manager 51, input of system requirements and security requirements is accepted (step S11).

Next, input of project information (security countermeasure execution requirement) (described later) is accepted (step S12).
Next, mounting means candidates that satisfy the project information are displayed (step S13).

Next, selection of the mounting means or alternative means from the displayed mounting means candidates is accepted (step S14).
Next, the assurance level and estimated calculation result of the selected mounting means or alternative means are displayed (step S15), and confirmation is urged to the project manager 51 (step S16).

If the approval of the project manager 51 is obtained (Yes in step S16), estimate information is created, and the estimate information creation process is terminated (step S17).
On the other hand, when the approval of the project manager 51 is not obtained (No in step S16), the process proceeds to step S14 and the process is continued.

Hereinafter, the estimation information creation process will be described using a specific example.
First, the project manager 51 inputs system requirements, security requirements, and project information.

FIG. 23 is a diagram showing a system and security requirement input screen.
On the system / security requirement input screen 131, system requirements and security requirements can be input (selected).

  The system / security requirement input screen 131 displays a plurality of system requirements and security requirements and check boxes corresponding to them. When the user selects one system requirement and one security requirement and presses the send button, the input information is confirmed and a project information input screen is displayed on the monitor 11.

FIG. 24 is a diagram showing a project information input screen.
The project information input screen 132 displays a plurality of project information. In FIG. 23, as an example, the program development scale, security total budget, and security personnel input fields are set. In addition, input fields such as presence / absence of a tool specification and a guarantee level may be set.

When project information is input by the project manager 51 and the transmission button is pressed, the input information is confirmed.
Next, the estimate information creation unit 130 acquires from the mounting means storage information table 121 mounting means and alternative means corresponding to the input system requirements and security requirements.

FIG. 25 is a diagram showing the acquired mounting means.
At this time, the estimation information creating unit 130 displays the mounting means display screen corresponding to the mounting means received by rearranging the list of mounting means in the order of the highest assurance level on the monitor 11 as a selection candidate. In FIG. 25, the portion indicated by the bold line is displayed on the monitor 11. When the mutual relationship is “AND”, these mounting means are collectively displayed on the monitor 11. At this time, the selection candidates are displayed with priority given to the mounting means by the mounting means. That is, it is displayed in preference to those that are highly likely to match the project conditions.

  It should be noted that an assurance level input field is provided on the project information input screen 132, and when the assurance level is input, the estimation information creation unit 130 displays only the mounting means or alternative means that are higher than the input assurance level. It may be.

FIG. 26 is a diagram showing a mounting means display screen.
When the project manager 51 selects one or a plurality of mounting means in the mounting means display screen 133 and presses the transmission button, the input information is confirmed.

  Next, the estimate information creation unit 130 determines whether or not the condition of the project information input only by the selected mounting means is satisfied. If the system requirements are not satisfied, the mutual relationship is referred to, and an alternative means corresponding to the insufficient mounting means is added to the selection.

Next, the estimate information creation unit 130 calculates the man-hours and costs of each part of each selected mounting (alternative) means by referring to the mounting means accumulation information table 121 and totals them.
For example, in the implementation means (a), since the security personnel are “unnecessary”, the man-hour is the additional man-hour per unit program scale (in the case of a non-security expert) × program development scale, that is, 0.1 × 50 = 5. It becomes.

The cost is procurement cost + man-hour × unit price, that is, 100000 + 5 × 30000 = 250,000.
As described above, the estimate information creating unit 130 calculates the man-hours, costs, assurance levels, and necessity / unnecessity of security knowledge of all mounting means, and totals them.

Here, the man-hour: the sum of the values of the respective parts of the mounting means However, duplicate costs are excluded when using tools.
Cost: Sum of values for each part of the implementation means. However, duplicate costs are excluded when using tools.

Security assurance level: The minimum value of each part of the implementation means.
Necessity of security knowledge: “Necessary” if even one of the parts of the implementation means is necessary
Next, the man-hour, cost, guarantee level, necessity of security knowledge for each means, and the estimated result of man-hour, cost, guarantee level, necessity of security knowledge in the selected combination are displayed on the monitor 11. In this case, when there are a plurality of conditions that satisfy the security requirements, a more preferable condition may be displayed with priority.

  FIG. 27 is a diagram showing an estimation result screen. In FIG. 27, as an example, two mounting means (mounting means (a), mounting means (b)) and one alternative means (no selection) are displayed as estimation results.

  When the project manager 51 checks the estimate adopted on the estimate result screen 134 and presses the OK button, the estimate information creating unit 130 outputs each instruction as estimate information. On the other hand, when the NG button is pressed, the mounting means display screen 133 is displayed again, and the mounting means is selected again.

FIG. 28 is a diagram illustrating an example of the mounting means instruction sheet and the test instruction sheet.
FIG. 28A shows a mounting means instruction sheet and a test instruction sheet when the mounting means is selected. FIG. 28B shows a test instruction when the alternative means is selected.

  As described above, according to the development support apparatus 100, since the project manager 51 can obtain information on costs and man-hours for security for each mounting means, it is possible to comprehensively include the budget and man-hours related to the original software. In consideration of the above, it is possible to select the mounting means. In the case of FIG. 26, it is suggested that the implementation means recommended by the security expert 41 is the best for the project manager 51, that is, the cost is minimum and the highest assurance level is obtained. As a result, even project managers with low security knowledge can grasp clear indicators of security quality and work cost at an early stage of development.

  In addition, each implementation means and each alternative means are divided into “constraint part”, “constraint part detection part”, and “constraint violation detection part” respectively, and by calculating the respective costs, the constraints that are often overlooked in the past The cost of the part detection part and the detection part of the constraint violation is also subject to calculation, and a more accurate calculation result (according to actual use) can be obtained.

In this embodiment, the estimated information creation unit 130 creates man-hours, costs, and necessity of security knowledge, but the mounting means accumulated information creation unit 110 may create them.
As described above, the development support program, the development support method, and the development support apparatus of the present invention have been described based on the illustrated embodiment. However, the present invention is not limited to this, and the configuration of each unit has the same function. Can be replaced with any structure having Moreover, other arbitrary structures and processes may be added to the present invention.

In addition, the present invention may be a combination of any two or more configurations (features) of the above-described embodiments.
Note that the above processing functions can be realized by a computer (by causing the computer to execute a predetermined development support program). In that case, a program describing the processing content of the function that the development support apparatus should have is provided. By executing the program on a computer, the above processing functions are realized on the computer. The program describing the processing contents can be recorded on a computer-readable recording medium. Examples of the computer-readable recording medium include a magnetic recording device, an optical disk, a magneto-optical recording medium, and a semiconductor memory. Examples of the magnetic recording device include a hard disk device (HDD), a flexible disk (FD), and a magnetic tape. Examples of the optical disc include a DVD (Digital Versatile Disc), a DVD-RAM (Random Access Memory), a CD-ROM (Compact Disc Read Only Memory), and a CD-R (Recordable) / RW (ReWritable). Examples of the magneto-optical recording medium include MO (Magneto-Optical disk).

  When distributing the program, for example, a portable recording medium such as a DVD or a CD-ROM in which the program is recorded is sold. It is also possible to store the program in a storage device of a server computer and transfer the program from the server computer to another computer via a network.

  A computer that executes a development support apparatus program stores, for example, a program recorded on a portable recording medium or a program transferred from a server computer in its own storage device. Then, the computer reads the program from its own storage device and executes processing according to the program. The computer can also read the program directly from the portable recording medium and execute processing according to the program. In addition, each time the program is transferred from the server computer, the computer can sequentially execute processing according to the received program.

(Supplementary note 1) In a development support program that provides information that satisfies security countermeasure requirements,
Computer
Security countermeasure requirements, a plurality of implementation method definition information that solves the security countermeasure requirements, information of work necessary for executing the implementation method for each of the implementation method definition information, and parameters given for each of the work information Storage means for storing implementation information comprising security assurance levels that guarantee the security countermeasure requirements calculated for each implementation method definition information according to
In response to an input of the security countermeasure requirement by a third party and a security countermeasure execution requirement comprising an element for executing the security countermeasure requirement, the security information input by the third party with reference to the implementation information is referred to Presenting means for presenting the implementation method definition information corresponding to the countermeasure requirement;
In response to the selection by the third party for the presentation of the implementation method definition information, the execution cost of the element of the security countermeasure execution requirement is given for each piece of the work information of the selected implementation method definition information. Calculation means for calculating using parameters,
Output means for outputting the execution cost of the element calculated by the calculation means together with the security assurance level;
Development support program characterized by functioning as

  (Supplementary Note 2) The computer further responds to input of the security countermeasure requirements, a plurality of the mounting method definition information, the work information of the mounting method, and parameters given for the work information. For each of the mounting means, a security assurance level for guaranteeing the security countermeasure requirement is calculated, and the calculated security assurance level is associated with the mounting method definition information, respectively, and the security countermeasure requirement, the mounting method definition information, The development support program according to appendix 1, wherein the development support program is caused to function as mounting information creation means for creating the mounting information in association with a security level.

(Additional remark 3) The said implementation information preparation means associates alternative method definition information with the said mounting method definition information in response to the input of the alternative method with respect to the said mounting method definition information, and performs the alternative method for every said alternative method definition information The security assurance level of the alternative method definition information is calculated in response to input of work information necessary at the time and a parameter given to the work information, and the calculated security assurance level is set as the alternative method definition. Creating the implementation information in which the security countermeasure requirements, the alternative method definition information, and the security level are associated with each other;
The presenting means refers to the implementation information in response to input of the security countermeasure requirement and the security countermeasure execution requirement, and the implementation method definition information corresponding to the security countermeasure requirement input by the third party The development support program according to attachment 2, wherein the alternative method definition information is presented.

  (Additional remark 4) The said calculation means judges whether the said security countermeasure requirement input using only the selected said mounting method definition information is satisfy | filled, and when not satisfy | filling the said security countermeasure requirement, the said selected said The development support program according to supplementary note 3, wherein an execution cost of the element of the security measure execution requirement for the alternative means associated with mounting method definition information is also calculated.

  (Supplementary Note 5) In the implementation information, the security countermeasure requirement and a plurality of the implementation method definition information are related by a logical sum or logical product relationship, and the presenting means responds to the input of the security measure execution requirement. The development support program according to appendix 1, wherein all of the mounting method definition information associated with the security countermeasure requirement input by the third party is presented.

  (Additional remark 6) The said mounting information preparation means judges whether the calculation of the said security assurance level is required in response to the input of the constraint pattern with respect to the said mounting method definition information, and calculates the said security assurance level which is not necessary The development support program according to appendix 2, characterized by not performing

  (Supplementary Note 7) When creating the work information, the mounting information creating unit classifies the mounting method definition information into a plurality of attention parts, and creates the security assurance level for each classified work information. The development support program according to appendix 2, characterized by:

  (Supplementary Note 8) When the implementation information includes the parameters that differ depending on the presence / absence of security knowledge, if the security measure execution requirement includes information on the presence / absence of the security knowledge, the presenting means The development support program according to appendix 1, wherein the implementation method definition information corresponding to the presence or absence of the security knowledge is presented.

  (Supplementary note 9) When the security measure execution requirement includes information on the security assurance level, the presentation unit presents the implementation method definition information that satisfies the security assurance level. Development support program.

(Supplementary note 10) The development support program according to supplementary note 1, wherein the work information is mainly cost and man-hour information.
(Supplementary note 11) The development support program according to supplementary note 1, wherein the presenting means presents the mounting method definition information together with the associated security assurance level.

(Supplementary note 12) In a development support method for providing information that satisfies security countermeasure requirements,
The storage means includes security countermeasure requirements, a plurality of implementation method definition information that solves the security countermeasure requirements, work information necessary for executing the implementation method for each implementation method definition information, and each work information. Storing the implementation information comprising: a security assurance level that guarantees the security countermeasure requirement calculated for each implementation method definition information according to the parameters given to
In response to the input of the security countermeasure requirement by the third party and the security countermeasure execution requirement having an element for executing the security countermeasure requirement by the third party, the presenting means refers to the implementation information and inputs by the third party Presenting the implementation method definition information corresponding to the security countermeasure requirement made,
In response to the selection by the third party with respect to the presentation of the mounting method definition information, the calculation means calculates the execution cost of the element of the security countermeasure execution requirement for each piece of work information of the selected mounting method definition information. With the parameters given in
The output means outputs the execution cost of the element calculated by the calculation means together with the security assurance level.
Development support method characterized by this.

(Supplementary note 13) In a development support device that provides information that satisfies security countermeasure requirements,
Security countermeasure requirements, a plurality of implementation method definition information that solves the security countermeasure requirements, information of work necessary for executing the implementation method for each of the implementation method definition information, and parameters given for each of the work information Storage means for storing implementation information comprising security assurance levels for guaranteeing the security countermeasure requirements calculated for each implementation method definition information according to
In response to an input of the security countermeasure requirement by a third party and a security countermeasure execution requirement comprising an element for executing the security countermeasure requirement, the security information input by the third party with reference to the implementation information is referred to Presenting means for presenting the implementation method definition information corresponding to the countermeasure requirements;
In response to the selection by the third party for the presentation of the implementation method definition information, the execution cost of the element of the security countermeasure execution requirement is given for each piece of the work information of the selected implementation method definition information. A calculation means for calculating using parameters;
Output means for outputting the execution cost of the element calculated by the calculation means together with the security assurance level;
A development support apparatus characterized by comprising:

It is a figure which shows the outline | summary of this invention. It is a figure which shows the hardware structural example of a development assistance apparatus. It is a block diagram which shows the function of a development assistance apparatus. It is a flowchart which shows a mounting means accumulation | storage information table creation process. It is a flowchart which shows the guarantee level calculation process of a mounting means. It is a figure which shows the input of a system requirement. It is a figure which shows the input of a security requirement. It is a figure which shows the input of a mounting means. It is a figure which shows the input of an alternative means. It is a figure which shows the input of a correlation. It is a figure explaining a restriction pattern screen. It is a figure which shows the decomposition | disassembly of a mounting means and an alternative means. It is a figure which shows a constraint pattern efficiency table. It is a figure which shows the result of having set the necessity of calculation using the constraint pattern efficiency table. It is a figure which shows the mounting means accumulation | storage information table which set the detailed information item. It is a figure explaining a detectability selection screen. It is a figure which shows an unset item input screen. It is a figure which shows the mounting means accumulation | storage information table into which the unset item was input. It is a figure which shows an unset item input screen. It is a figure which shows the mounting means accumulation | storage information table into which the unset item was input. It is a figure which shows calculation of a guarantee level. It is a flowchart which shows estimation information creation processing. It is a figure which shows a system and a security requirement input screen. It is a figure which shows a project information input screen. It is a figure which shows the acquired mounting means. It is a figure which shows a mounting means display screen. It is a figure which shows an estimation result screen. It is a figure which shows an example of a mounting means instruction sheet and a test instruction sheet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Computer 2 Storage means 3 Implementation information 4 Presentation means 5 Calculation means 6 Output means 7 Implementation information creation means 41 Security specialist 51 Project manager 100 Development support apparatus 110 Implementation means accumulation information creation part 111 Restriction pattern screen 112 Detectability selection Screen 113 Non-set item input screen 114 Non-set item input screen 120 Mounting means storage information storage section 121 Mounting means storage information table 122 Constraint pattern efficiency table 130 Estimate information creation section 131 System and security requirement input screen 132 Project information input screen 133 Mounting means display screen 134 Result screen A Security countermeasure requirements B1 Mounting method definition information C1 Work information D1 Security assurance level

Claims (5)

In a development support program that provides information that satisfies security countermeasure requirements,
Computer
Security countermeasure requirements, a plurality of implementation method definition information that solves the security countermeasure requirements, information of work necessary for executing the implementation method for each of the implementation method definition information, and parameters given for each of the work information Storage means for storing implementation information comprising security assurance levels that guarantee the security countermeasure requirements calculated for each implementation method definition information according to
In response to an input of the security countermeasure requirement by a third party and a security countermeasure execution requirement comprising an element for executing the security countermeasure requirement, the security information input by the third party with reference to the implementation information is referred to Presenting means for presenting the implementation method definition information corresponding to the countermeasure requirement;
In response to the selection by the third party for the presentation of the implementation method definition information, the execution cost of the element of the security countermeasure execution requirement is given for each piece of the work information of the selected implementation method definition information. Calculation means for calculating using parameters,
Output means for outputting the execution cost of the element calculated by the calculation means together with the security assurance level;
Development support program characterized by functioning as Said computer further, said security requirements, a plurality of the mounting method definition information, and the work information of the mounting method, the mounting method in response to the input of the parameters given for each information of the work For each definition information , a security assurance level for guaranteeing the security countermeasure requirement is calculated, and the calculated security assurance level is associated with the implementation method definition information, respectively, and the security countermeasure requirement, the implementation method definition information, and the security assurance are calculated. The development support program according to claim 1, wherein the development support program functions as a mounting information creation unit that creates the mounting information in association with a level. The implementation information creation means is necessary when executing the alternative method for each of the alternative method definition information by associating the alternative method definition information with the implementation method definition information in response to the input of the alternative method for the implementation method definition information. Calculating the security assurance level of the alternative method definition information in response to input of work information and parameters given to the work information, and associating the calculated security assurance level with the alternative method definition information, Creating the implementation information associating the security countermeasure requirements, the alternative method definition information and the security assurance level;
The presenting means refers to the implementation information in response to input of the security countermeasure requirement and the security countermeasure execution requirement, and the implementation method definition information corresponding to the security countermeasure requirement input by the third party 3. The development support program according to claim 2, wherein the alternative method definition information is presented. In a development support method that provides information that satisfies security countermeasure requirements,
The storage means includes security countermeasure requirements, a plurality of implementation method definition information that solves the security countermeasure requirements, work information necessary for executing the implementation method for each implementation method definition information, and each work information. Storing the implementation information comprising: a security assurance level that guarantees the security countermeasure requirement calculated for each implementation method definition information according to the parameters given to
In response to the input of the security countermeasure requirement by the third party and the security countermeasure execution requirement having an element for executing the security countermeasure requirement by the third party, the presenting means refers to the implementation information and inputs by the third party Presenting the implementation method definition information corresponding to the security countermeasure requirement made,
In response to the selection by the third party with respect to the presentation of the mounting method definition information, the calculation means calculates the execution cost of the element of the security countermeasure execution requirement for each piece of work information of the selected mounting method definition information. With the parameters given in
The output means outputs the execution cost of the element calculated by the calculation means together with the security assurance level.
Development support method characterized by this. In a development support device that provides information that satisfies security countermeasure requirements,
Security countermeasure requirements, a plurality of implementation method definition information that solves the security countermeasure requirements, information of work necessary for executing the implementation method for each of the implementation method definition information, and parameters given for each of the work information Storage means for storing implementation information comprising security assurance levels for guaranteeing the security countermeasure requirements calculated for each implementation method definition information according to
In response to an input of the security countermeasure requirement by a third party and a security countermeasure execution requirement comprising an element for executing the security countermeasure requirement, the security information input by the third party with reference to the implementation information is referred to Presenting means for presenting the implementation method definition information corresponding to the countermeasure requirements;
In response to the selection by the third party for the presentation of the implementation method definition information, the execution cost of the element of the security countermeasure execution requirement is given for each piece of the work information of the selected implementation method definition information. A calculation means for calculating using parameters;
Output means for outputting the execution cost of the element calculated by the calculation means together with the security assurance level;
A development support apparatus characterized by comprising:

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