JPS6197751A - Diagnosis system for identification number register - Google Patents

Abstract

PURPOSE:To confirm economically and in a short time the coding function of an identification number register by sending back the coded data from an upper device to send it to a host device after decoding and collating the data received first by the host device with the data received again. CONSTITUTION:A number is supplied by ten-key 9 of an identification number register 1 and coded by a coding circuit of the register 1. The coded number is sent to a POS terminal equipment 2. The equipment 2 displays the received data at the upper part of a display part 8. Then the coded data is sent as it is to the register 1 and receives a decoding indication. A decoding circuit of the register 1 decodes said data and sends it to the coding circuit. The coded data is sent to the equipment 2 again. The equipment 2 displays the retransmitted data on the lower part of the part 8. If coincidence is obtained between both data displayed at the upper and lower parts, it is confirmed that the coding function of the register 1 is normal.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a password registration device that notifies a higher-level device such as a PO'S@non-device of a password used in a credit card, etc. The present invention relates to a diagnostic method for a password registration device that has a function of encrypting a password and sending it to a host device.

Generally, a customer who uses a credit card to make a purchase presents his or her credit card and inputs a password assigned to the owner of the credit card from a password registration device. The credit card submitted at this time is a PIN registration device or PO
A PIN number inserted into a card league installed in a host device such as a terminal device and recorded on the magnetic stripe of a credit card, or a PIN number derived based on the magnetic stripe data, and a PIN number entered by the customer from a PIN registration device. The personal identification number is verified to prove the identity of the person.

In this case, the password entered manually from the password registration device is PO8.
Confidentiality must be maintained from all persons other than the person, including the operator of the terminal device. For this reason, the password registration device is provided with an encryption function.

Password registration bag with encryption function: δ needs to be functionally tested at the factory or at the installation site, but with the encryption function added, it is necessary to ensure that this functional test does not become difficult. be.

[Conventional “technology”]

FIG. 2 is a diagram showing an example of a system configuration using a conventional password registration device.

The password registration device 1 encrypts the password input by the customer using an encryption circuit and sends it to the POS terminal device 2, which is a host device.

The POS terminal device 2 sends this encrypted password to the modem 4 via the terminal control device 3. Modem 4 modulates this password and sends it to modem 5 via the public line.

The modem 5 demodulates the modulated password and sends it to the decoding circuit 6. The decryption circuit 6 decrypts this encrypted password and sends it to the computer system 7.

On the other hand, the data or password read from the card league of the password registration device 1 is also sent to the computer system 7 in the same manner as described above. The computer system 7 searches for the PIN number based on the data read from the card league, or if it is the PIN number itself, it compares the PIN number with the previously sent PIN number to check whether the user is the person himself or herself.

C Problems to be Solved by the Invention] As mentioned above, the conventional password registration device has an encryption function, but does not have a decryption function because it is unnecessary. Therefore, in order to test whether the encryption function of the password registration device is normal, it is necessary to use a computer system equipped with a decryption function.

Therefore, in the case of a factory test, a computer system must always be prepared, and since a public line is used at the installation location, there are problems in that line usage fees are required and it takes time.

Means for Solving Problem C] The above problem requires a decryption function that decrypts encrypted data according to instructions from a host device, and a means for sending the data decrypted by the decryption function to the encryption function. A function test of the password registration device is performed by having the host device return encrypted data sent by the password registration device to the password registration device, decrypting it, encrypting it again, and receiving it. This problem is solved by a diagnostic method for a password registration device according to the present invention.

[Effect]

In other words, the password registration device is equipped with a decryption function as well as an encryption function, the encrypted data is sent back from the host device, and after decryption, it is encrypted again and sent to the host device, and the data that was first received by the host device is sent back to the host device. The functionality of the PIN registration device is tested by comparing the received data with the data received again.

〔Example〕

FIG. 1 is a diagram illustrating an embodiment of the present invention.

Enter a several-digit number using the numeric keypad 9 of the password registration device 1. The encryption circuit of the password registration device encrypts this number and sends it to p.
It is sent to the OS terminal device 2. The POS terminal device 2 displays the received data in the upper part of the display section 8 as a character code. The displayed character code is displayed as meaningless data, which shows that it has been encrypted.

In response to input from the keyboard 10, the p, os terminal device 2 returns the encrypted data as is to the password registration device l, and gives a decryption instruction. The decryption circuit of the password registration device 1 decrypts this data and sends it to the encryption circuit.

The data encrypted by the encryption circuit is sent back to the PO3 terminal device 2.
will be sent to.

The pos terminal device 2 displays the retransmitted data at the bottom of the display section 8. If the data displayed at the top and bottom of the display section 8 are the same, it is confirmed that the encryption function of the password registration device 1 is normal.

The above description has been made by displaying the data in parallel on the display unit 8, but the results of collation by a program may also be displayed. Further, if two password registration devices are used and encryption and decryption are performed by separate password registration devices, a more reliable test can be performed.

[Effects of the Invention] As explained above, the present invention does not require the preparation of an expensive computer system or the need for testing via a public line, so the encryption function of a PIN registration device can be implemented economically and in a short time. I can confirm.

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating an embodiment of the present invention, and FIG. 2 is a diagram illustrating an example of a system configuration using a conventional password registration device. In the figure, 1 is a password registration device, 2 is a POS terminal device, 3 is a terminal control device, 4.5 is a modem, 6 is a decryption circuit,
7 is a computer system, 8 is a display section, 9 is a numeric keypad, and 10 is a keyboard.

Claims (1)

[Claims] In a password registration device that has an encryption function that encrypts input data and sends it to a higher-level device, the decryption function decrypts the encrypted data according to an instruction from the higher-level device, and the decryption function decrypts the encrypted data according to instructions from the higher-level device. means for sending data to the encryption function, and the host device sends the encrypted data sent by the password registration device back to the password registration device, decrypts it, encrypts it again, and receives it. A diagnostic method for a password registration device characterized by performing a functional test of the registration device.