JP2001094794A - Security system, security method and storage medium in FAXOCR system - Google Patents

Abstract

(57) [Summary] To establish a robust security system in a FAXOCR system. SOLUTION: On an OCR form in which a subscriber number is written,
A security sheet on which a different graphic is printed for each subscriber is superimposed and faxed to the center. The center reads the subscriber numbers and the dot sequence of figures on the security sheet, refers to an encoded database in which security patterns for each subscriber are registered in advance, and reads the security pattern corresponding to the read subscriber number. The security pattern is compared with the security pattern on the read security sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a security system, a security method, and a storage medium in a FAX OCR system.

[0002]

2. Description of the Related Art FAXOCR systems are widely used in the field of financial services such as banking, securities, life insurance and non-life insurance.

In general, security and uniqueness in a FAXOCR system are secured by a sequence number and a post-business gross check determined by the sender and the receiver (center).

[0004]

However, security in the conventional FAX OCR system is based on OCR.
Anyone could know the sheet and the fax number of the destination, so it was not enough. For example, when used in a bank exchange system that requires strict security, it is operated by a security system established with a password and matching by the amount and number of transactions received, but it is operated by a password leakage. Therefore, even if it is described on the OCR form or the authentication by the push button, once leaked, the identity collapses. For this reason, it was necessary to establish a robust security system.

[0005] In the above-described method, a third party can also perform facsimile transmission by impersonating a contractor.
In some cases, banking, life insurance, and non-life insurance operations that handle funds are insufficient. Further, the security method using a password has a problem in efficiency because a FAX function such as automatic transmission cannot be used.

[0006]

In order to achieve the above object, a FAXOC for facsimile transmitting an OCR form according to the present invention is provided.
In the R system, a predetermined security pattern is printed, and when the OCR form is faxed to the receiver, a security sheet to be superimposed on the OCR form, and the OCR form and the security sheet are superimposed. Means for facsimile transmission, a database in which security patterns are registered in advance,
It is characterized by comprising means for comparing the security pattern transmitted by AX with the security pattern registered in the database, and means for judging that the transmission is legitimate when the result of the comparison is a match. And

Thus, the identity of the sender can be confirmed.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

Normally, when necessary information such as the name of a bank to which an exchange is to be transferred, the name of a branch, the name of a recipient, the name of a recipient, etc. is entered in the OCR form, the fax is directly transmitted to the center by FAX. In the present invention, a security sheet 3 is further superimposed on the OCR form 1 as shown in FIG. The security sheet 3 is formed of a transparent sheet of the same size as the OCR form 1, and has a security pattern printed thereon. The security sheet 3 is superimposed on the OCR form 1 and read by the FAX 5 reader. As a result, F
From the viewpoint of the AX5 reader, the data can be optically different from the original state. The center recognizes the optical data as a FAX sender and distinguishes between the case where there is no security sheet and the case where the data is transmitted in a pattern other than the original security sheet. This ensures the identity of the sender. This security sheet performs a regular update between the center and the FAX sender, thereby preventing an accident in case of leakage to a third party.

FIG. 2 is a diagram showing details of the security sheet shown in FIG.

The design of the security sheet 3 for the FAX OCR system in the present invention is as shown in FIG.
A pattern uniquely determined is written on a transparent sheet of the same size as the form 1. This pattern is determined based on the following equation.

As shown in FIG. 3, the lower left corner of the OCR form is set as a start point, an end point is set as a (n), and a vector determined by the start point and the end point is set as An. Also, An and OCR
Assuming that the angle formed by the lower end on the form is Xn, and Ln is the length of An, Ln and Xn are respectively represented by the following equations (where L is the length of the diagonal line of the OCR form).

Ln = L × rand Xn = π × rand (where rand is a random number function that generates a real number from 0 to 1 by giving n and a subscriber number) Thus, if Ln and Xn are defined, the vector An is represented by the following equation.

An = (Ln × sinXn, Ln × cosXn) (however, the upper and lower limits are set for the two-dimensional elements, and fixed values Xs and Ys are taken when the two-dimensional elements deviate from the ranges).

A point sequence is a set of n pieces, and an n-th point is a
When expressed by (n), the security pattern is a
It can be represented by a continuous line connecting (n) and a (n + 1) with a straight line. The dot sequence represented by the pattern P is printed on a security sheet, and when the OCR form 1 is transmitted by facsimile to the center, the OCR form 1 is overlapped and transmitted. The center prints the security pattern P of the corresponding subscriber and analyzes the pattern in addition to recognizing the characters and graphics described on the OCR form when processing the transmitted image data. At this time, if the analysis is directly executed, the processing performance may be delayed.
A subscriber number is preliminarily written on the R form, and this number is first checked against a previously registered subscriber master to recognize and read the pattern stored in the database so that it matches. The point sequence on the database is stored as follows.

FIG. 4 is a diagram showing an example of a point sequence stored on the database.

As shown in FIG.
It is composed of an update date, a subscriber number, a sequential number, a start address X, a start address Y, an end address X, and an end address Y.

The subscriber number represents a unique number assigned to a corporation or an individual who receives the service of the FAXOCR system. The sequential number represents a sequence number (corresponding to a point sequence a (n)) of a point sequence of a series of security patterns P.

The start addresses X and Y indicate relative positions in the X-axis direction and the Y-axis direction of points corresponding to the sequential numbers on the OCR form. The end addresses X and Y indicate the relative positions of the end points in the X-axis direction and the Y-axis direction, respectively, when a straight line is represented as a point sequence from the above points.

Although security patterns are managed in a database (dot sequence), in order to perform high-speed pattern matching when an OCR form is actually received, a database to be referred to in the matching process is encoded in advance. The encoding is to express the allowable point sequence area on the OCR form by bits by the following processing. The encoding has an effect of omitting the coordinate calculation in the matching processing.

As shown in FIG. 5, the encoding database is
It consists of a subscriber number and a bit string. Each bit string is
The OCR form is regarded as points of n horizontal dots and m vertical dots, and is composed of information of “0” and “1” obtained by combining all dot information of the first, second, third,. . "1"
Indicates an allowable point (a dot forming a security pattern), and “0” indicates an unacceptable point (a dot other than the security pattern).

FIG. 6 shows the data stored in the encoding database.
It shows information of 0s and 1s that are obtained by combining the points in the security pattern. As shown in the figure, the information stored in the encoding database is obtained by converting an OCR form into n dots horizontally and m dots vertically.
1st line, 2nd line, 3rd line ... m
It is composed of 0 and 1 information obtained by combining all dot information in the row. As shown in FIG. 6, D1, D2,... Dm are combined and stored as one record on the encoding database.

The sequence of security patterns is managed between the center system operator and the subscriber.

The pass / fail judgment in the security check is as follows.
Let Q be a set obtained by converting the OCR recognition pattern into coordinates, and the condition is that the ratio between the number of point sequences of Q and the number of P is a certain value or more (for example, 95% or more).

In case of a leak, the dot sequence of the security pattern on the security sheet is periodically changed.
The modified security sheet is sent to the printed subscriber. The center has an automatic database update function for the point sequence. The update date of the database is checked (current YYYYMMDD> = update date), and the combination of the update date after one month and the subscriber number is updated to a new point sequence. The updated data is sent to the subscriber as a new security pattern via a medium such as e-mail, FD, or CD-ROM. Even if the subscriber receives the data, the data cannot be read without passing through the decompression software distributed by the center (compression / decompression method created by an algorithm different from commercially available or free decompression software) Is used). The decompressed data is
Printing is performed by a general printer on the blank security sheet distributed from the center using dedicated printing software.

FIG. 7 shows a facsimile using a security sheet.
5 is a flowchart illustrating a process of a security method in the OCR system.

First, in step S2, the sender
Fill in the CR form with necessary information (eg, subscriber number, name of bank to which the money is to be transferred, branch name, recipient account, name, etc.), and place the security sheet shown in FIG. FAX transmission to the side. As a result,
The composite information of the security pattern printed on the security sheet and the information on the OCR form is transmitted to the center. In step S4, the center receives the transmitted combined information. Next, in step S6,
Referring to the subscriber master 22, it is determined whether or not the subscriber number entered on the OCR form is registered in the subscriber master 22. If the subscriber number entered on the OCR form is not registered in the subscriber master 22 in step S8, predetermined error processing is performed in step S10.

On the other hand, if it is found in the subscriber master 22 in step S8, in step S12,
Performs security pattern recognition processing. That is, referring to the encoded database 24, the combined bit information of the security pattern corresponding to the subscriber number recognized in step S6 is read, and the read bit information is compared with the security pattern printed on the security sheet. If the collation does not match in step S14, predetermined error processing is performed in step S16.

On the other hand, if the collation matches in step S14, it is determined that the data has been transmitted properly, and in step S18, the original business process is performed.

FIG. 8 is a flow chart showing the processing when the security pattern is updated periodically.

First, in step S32, the elapse of the security master update date is checked. That is, as shown in FIG. 4, the point sequence database has a data name update date field indicating when the security pattern was updated. Therefore, this date is compared with the date at the present time to determine whether a predetermined number of days, for example, one month has elapsed. Then, in step S34, in all records constituting the point sequence database, step S3
Step 2 is performed to extract all records whose update date is one month or more. Then, in step S36, a new security pattern for each record (subscriber) is generated using the above-described expression of the pattern P. Then, in step S38, the generated security pattern is encrypted or compressed using a dedicated algorithm, and transmitted by e-mail. Note that, other than e-mail, it may be distributed in the form of a floppy disk or CD-ROM.

On the other hand, in step S40, the subscriber converts the encrypted or compressed security pattern distributed by e-mail from the center side into dedicated decryption software or compression / decompression previously distributed from the center side. Decryption or decompression is performed using software (compression / decompression software using a compression / decompression method created using an algorithm different from commercially available or free decompression software). Then, step S4
In step 2, printing is performed by a general-purpose printer on a blank security sheet distributed from the center using dedicated printing software.

[0033]

According to the present invention, the identity of the sender can be secured by sandwiching the managed security sheet at the time of facsimile transmission, and other unauthorized transmissions, particularly, abuse of money transfer data transfer, etc. can be prevented. can do.

Further, the identity of the transmission source can be quickly secured by making the security pattern into a database and comparing the transmitted security pattern with the bit information representing the security pattern on the database.

Further, by changing the security pattern on a regular basis, it is possible to prevent the security sheet from being leaked due to an emergency copy or the like.

[Brief description of the drawings]

FIG. 1 is a diagram showing the concept of a security system in a FAXOCR system according to the present invention.

FIG. 2 is a diagram showing details of a security sheet shown in FIG. 1;

FIG. 3 is a conceptual diagram showing generation of a sequence of dots of the security pattern shown in FIG. 2;

FIG. 4 is a diagram showing a format on a database storing a set of point sequences shown in FIG. 2 or FIG. 3;

FIG. 5 is a diagram showing a format on an encoding database in which sets of point sequences shown in FIG. 4 are all combined and represented as 0 and 1 information.

FIG. 6 is a conceptual diagram showing 0 and 1 information obtained by assuming that an OCR form is a dot of horizontal n dots and vertical m dots, and all dot information of the first line, the second line,...

FIG. 7 is a flowchart illustrating a collation process on the center side.

FIG. 8 is a flowchart illustrating a security sheet update process.

[Explanation of symbols]

 1 OCR form 3 Security sheet 5 FAX 22 Subscriber master 24 Encoding database

Claims (6)

[Claims] 1. FAX OCR for faxing an OCR form
In the system, when a predetermined security pattern is printed and the OCR form is faxed to the recipient side, a security sheet to be superimposed on the OCR form, and the FAX by superimposing the OCR form and the security sheet. Means for transmitting, a database in which security patterns are registered in advance, means for matching the security pattern transmitted by facsimile with security patterns registered in the database, and when a match is obtained as a result of the matching, Means for determining transmission.
Security system in AXOCR system. 2. A subscriber number is written on the OCR form, the database stores different security patterns corresponding to each subscriber number, and the collating means determines a subscriber pattern from the transmitted OCR form. 2. The security system according to claim 1, wherein a number is read, a security pattern corresponding to the subscriber number is read from the database, and the security pattern is compared with the transmitted security pattern. 3. The fax machine according to claim 1, further comprising means for updating said security pattern.
Security system in OCR system. 4. The security pattern updating means includes means for determining whether a predetermined number of days have elapsed since the security pattern update date, and when the determination means determines that the predetermined number of days has elapsed from the update date, Means for generating a pattern point sequence; means for distributing the generated security pattern to subscribers; means for receiving the distributed security pattern; and means for printing the received security pattern on a security sheet. The security system according to claim 3, wherein the security system is configured. 5. A security method in a FAX OCR system, wherein when an OCR form is transmitted by facsimile, a security sheet on which a security pattern is printed is superimposed on the security sheet.
Transmitting, reading the security pattern printed on the security sheet on the receiver side, and comparing the security pattern with a pre-registered security pattern; Determining that the transmission is legitimate only when the IDs match;
A security method in a FAXOCR system, comprising: 6. A storage medium storing a computer readable program for security of a FAX OCR system, wherein a security sheet printed with the security pattern is superimposed on an OCR form for the computer. Means for facsimile transmission, means for reading a security pattern printed on the security sheet, means for collating with a security pattern registered in advance, and when the result of the collation matches, it is determined that the transmission is legitimate. Means, and a computer-readable storage medium.