JPH04362743A - Hash production tool - Google Patents

Abstract

PURPOSE:To easily and surely record the hash correction value to a program by producing the hash correction value for the value which is fixed with addition of the hash value. CONSTITUTION:A hash production tool 1 consists of a hash value production means 1a containing a processor, a program, etc., a hash correction value production means 1b, and a hash correction value recording means 1c. The means 1a produces the value similar to the hash value 4a obtained when a program is loaded to an information processor 4. Based on this hash value, the means 1b produces the hash correction value which is fixed with addition of the hash value. The means 1c records the hash correction value obtained by the means 1b to the program. In such a constitution, the manual calculation of the hash correction value can be omitted. Then the hash correction value can be easily and surely recorded to the program.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is used in financial automation equipment such as ATMs (automated transaction machines) and general information processing equipment, and when loading an application program, it is possible to check whether the program has been loaded normally. The present invention relates to a hash creation tool that creates a hash (HUSH) value for confirmation and a hash correction value.

0002

2. Description of the Related Art Generally, hash correction values are used in financial automation equipment such as automatic transaction equipment to confirm the validity of application programs loaded during development. That is, the automated equipment obtains a predetermined hash value by loading a certain application program, and adds it to this hash value to obtain a certain value, for example 00000.
A value of 1 (hexadecimal) is set as a hash correction value, and this hash correction value is recorded on the application program side. In this way, when an application program is loaded into an automated device and the hash value and hash correction value are added, if the application program is not loaded normally, the value will not be the predetermined value, so its validity can be confirmed. It can be performed.

Conventionally, when trying to use such a hash value and a hash correction value, a hash value is first created using a tool having an operating system (OS) similar to that of the financial automation device to be loaded. Then, a hash correction value is manually calculated from the created hash value, and another tool is used to write the hash correction value in a file on the floppy disk, which is an auxiliary storage medium for loading. I had to put the patch directly into the file.

0004

[Problem to be Solved by the Invention] However, it goes without saying that the above conventional method requires the use of two types of tools (utilities), as well as the complexity and uncertainty of having to use manual calculations. It had the following problems. For example, in the case of an automatic transaction device, the hash value and hash correction value are 4-byte values due to the structure of the automatic transaction device, whereas the patch input is in 1-byte units, and furthermore, when recording to a file, the hash value and hash correction value are 4 bytes. It is necessary to reverse the upper byte and lower byte of the hash correction value, and in addition, if the program is recorded on multiple floppy disks, which floppy disk should be used? It had such complexity and uncertainty that it could not be understood unless one knew the contents of the system. The present invention was made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a hash creation tool that can easily and reliably record a hash correction value in an application program.

[0005]

[Means for Solving the Problems] The hash creation tool of the present invention is such that an information processing device obtains a predetermined hash value by loading a program, and the program is configured to obtain a predetermined hash value by loading a program into the information processing device. If a hash correction value is provided for checking whether or not loading has been performed normally based on the relationship with the hash value, a hash creation tool that creates the hash correction value uses a hash that creates a predetermined hash value. A hash correction value creating means for creating a hash correction value of a constant value by adding it to the hash value, and a hash correction value recording means for recording the hash correction value in the program. It is something that

[0006]

[Operation] In the hash creation tool of the present invention, the hash value creation means creates a value similar to the hash value obtained when loading a program into the information processing device, and based on this hash value, the hash correction value creation means creates a hash correction value that becomes a constant value by adding it to the hash value. The hash correction value recording means records the hash correction value obtained by the hash correction value creation means in the program. Therefore, there is no need to manually calculate the hash correction value, and the hash correction value can be easily and reliably recorded in the program.

[0007]

Embodiments Hereinafter, embodiments of the present invention will be explained in detail with reference to the drawings. FIG. 1 is an explanatory diagram at the time of loading an application program into an automatic transaction device to which the hash creation tool of the present invention is applied.

In the figure, 1 indicates a hash creation tool, and this hash creation tool 1 is composed of a processor or a program, and includes a hash value creation means 1a, a hash correction value creation means 1b, and a hash correction value recording means 1c.
It is composed of. The hash value creation means 1a is a means for creating a hash value by carry-in addition, which will be described later.The hash correction value creation means 1b is a means for creating a hash correction value from the hash value created by the hash value creation means 1a. The value recording means 1c is means for writing the hash correction value created by the hash correction value creation means 1b onto the floppy disk 2 of the program. Further, in the figure, 3 represents a personal computer using the hash creation tool 1, 4 represents an automatic transaction device into which an application program is loaded, and 4a represents a hash value obtained by loading the application program.

Furthermore, the hash creation tool 1 is configured to be able to operate on an operating system different from that of the automatic transaction device 4, for example, to operate on an operating system used in a general personal computer 3. It is configured. That is, since the application programs loaded into the automated transaction device 4 have different formats, they cannot generally be read by a normal personal computer 3, but the hash creation tool 1 can read/write programs with different formats. It is configured.

Next, a hash correction value writing operation using the hash creation tool 1 having the above configuration will be explained. FIG. 2 is a flowchart showing the operation. First, the operator of the personal computer 3 selects an application program to be loaded into the automatic transaction device 4 (step S1). It is assumed here that program A and program B are used as application programs. When the operator selects A as the program (step S2), the operator instructs the selection of the unit (drive) in which the floppy disk 2 in which program A is stored is to be set (step S3), and the operator selects the floppy disk 2 in the designated unit. is set (step S4).

[0011] Thereby, the hash value creation means 1a of the hash creation tool 1 reads the file of program A, performs addition in units of 4 bytes, and creates a hash value (step S5). In this case, when adding a digit, if there is a carry-over, that number is rounded down and 1 is placed in the ones place instead.
It performs an operation called carry-in addition, which adds .

FIG. 3 shows an example of this calculation. That is, 99
887760+10000000=109887760
(decimal), but because the digits are carried forward, “1
” and add this number to the ones place to get 09887761.
This is the addition. Next, the hash correction value creation means 1b calculates a hash correction value from the hash value obtained in this manner (step S6). In this case, the result of adding the hash value with carry is 00000001.
(hexadecimal) is obtained as the hash correction value. In addition, here, the value added including carry is 00
Although it is set to 000001, it may be set to other values.

Next, the hash value and hash correction value obtained in steps S5 and S6 are displayed on the display of the personal computer 3 (step S7), and a message asking whether or not to write the hash correction value to the floppy disk 2 is displayed. to instruct the operator to make a selection. Here, if the operator's selection is writing (step S8), the hash correction value recording means 1c writes to the floppy disk 2 (step S9). This writing is performed to a storage file different from the program A file. Also, at this time, the hash correction value is written with the upper byte and lower byte reversed.

FIG. 4 shows the written values. That is,
If the created hash correction value is "12345678", the storage format on the floppy disk is "78563".
412". After writing the hash correction value, or if the operator does not select writing in step S8, it is determined whether or not to repeat the above process (step S1
0), to repeat, return to step S1 and perform the above program selection process.

[0015] Furthermore, when program B is selected in program selection (step S2), program A
A unit selection instruction is given in the same way as in the case of (step S1
1). Here, in the case of program B, due to the floppy disk capacity, it is stored across a plurality of floppy disks, and is divided into units called members. Therefore, which member is the target of hash creation is recorded in the load address table file. Therefore, the operator sets the floppy disk containing the load address table file into the designated unit (step S12). Thereby, the hash value creation means 1a reads the load address table file and creates a table of names of members to be hashed (step S13).

After that, replace the floppy disk with program B (on which a part of program B exists), and start from the members existing on the replaced floppy disk in step S.
The member whose name is listed in the member name table created in step S13 is searched for, and a hash value of that member is created (step S14). After creation, find the member again, create a hash value, and add the hash value created this time to the hash value created last time. Thereafter, the procedure of searching for members and creating hash values for each member is repeated, and the created hash values are added one after another (step S15). Furthermore, if the member whose hash value is to be taken still remains in the member name table (step S16), and it does not exist on the currently set floppy disk, a message to that effect is displayed on the display ( Step S17), prompts the operator to replace the floppy disk (Step S18). At that time, the remaining member names in the member name table are displayed together, making it clear which floppy disk should be set.

In this way, when hash values have been created for all the members for which hash values have been created (step S16), the process moves to the above-mentioned step S6 from the finally obtained hash value, and the program A Create a hash correction value in the same way as in the case of . The following operations are also similar to program A; the obtained hash correction value is displayed on the display, and the operator selects whether or not to write to the floppy disk according to the display, and executes the writing. However, writing in this case is executed to the load address table file.

Furthermore, the floppy disk 2 created in this manner is loaded into the automatic transaction device 4 in the same manner as before. That is, by loading the program, the automatic transaction device 4 obtains a hash value 4a by the same calculation as the hash value creation means 1a described above, and adds this hash value 4a and the hash correction value recorded (added) to the program. Check if it was loaded correctly by running:

As described above, the hash creation tool of the above embodiment can perform three processes at once: creation of a hash value, creation of a hash correction value, and writing to a floppy disk. Furthermore, since the number of items that the operator must input is small and the program is interactive, it can be easily used even by those who are not familiar with the contents of the program. Furthermore, even if the program B is stored across multiple floppy disks, the operator does not need to consider the contents of each individual file. In addition, there is no need to use a personal computer with the same operating system as the automatic transaction device 4 as in the past.
Since a general personal computer 3 can be used, it has excellent versatility and portability.

[0020] In the above embodiment, the automated transaction device 4 is used as an example of a device for loading programs, but the device is not limited to this, and can be used not only for other automated financial devices but also for loading programs. If it is an information processing device, the same effects as in the above embodiment can be achieved.

[0021]

As explained above, the hash creation tool of the present invention includes a hash value creation means, a hash correction value creation means, and a hash correction value recording means. There is no need for manual calculation or the like for creation, and the hash correction value can be easily and reliably recorded in the program. Therefore, even if the user is not familiar with the contents of programs, hash correction values, etc., it can be easily performed.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram at the time of program loading to which a hash creation tool of the present invention is applied.

FIG. 2 is a flowchart of a hash correction value writing operation using the hash creation tool of the present invention.

FIG. 3 is an explanatory diagram of hash value calculation in the hash creation tool of the present invention.

FIG. 4 is an explanatory diagram of hash correction value writing in the hash creation tool of the present invention.

[Explanation of symbols]

1 Hash creation means 1a Hash value creation means 1b Hash correction value creation means 1c Hash correction value recording means 4 Automatic transaction device (information processing device) 4a　Hash value

Claims (1)

[Claims] Claim 1: An information processing device obtains a predetermined hash value by loading a program, and when the program is loaded into the information processing device, the information processing device obtains a predetermined hash value, and when the program is loaded into the information processing device, the information processing device obtains a predetermined hash value. If a hash correction value is provided for confirmation based on the relationship with the value, the hash creation tool that creates the hash correction value includes a hash value creation means that creates a predetermined hash value, and a hash value that is added to the hash value. 1. A hash creation tool comprising: hash correction value creation means for creating a hash correction value of a constant value; and hash correction value recording means for recording the hash correction value in the program.