JP2703957B2 - Recording device and recording method for portable medium - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention] (Industrial application field) The present invention writes, for example, issuance data such as information on an issuer or information for each card holder on a portable medium such as a memory card. For recording on a portable medium for recording.

(Prior Art) On a portable medium such as a memory card, when issued, for example, issuance data stored in an issuance data file is written by an issuance system. At this time, if the issued data requires confidentiality, the issued data is stored in the issued data file in an encrypted state, and is decrypted at the time of issuance and written to the memory card. .

In such a conventional issuance system, issuance data that needs to be decrypted at the time of issuance is predetermined in the issuance system, or all issuance data is stored in an issuance data file in an encrypted state. At the time of issuance, all issuance data is subject to decryption.

(Problems to be Solved by the Invention) Conventionally, issuance data that needs to be decrypted at the time of issuance is determined in advance in the issuance system, or all issuance data is encrypted and stored in an issuance data file. Since all issuance data is to be decrypted at the time of every issuance, there is a problem that the issuance system lacks versatility.

The present invention has been made based on the above circumstances, and it is an object of the present invention to provide a recording apparatus and a recording method for a portable medium capable of providing versatility in determining whether or not decryption processing of issued data is necessary. I do.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention stores a plurality of issued data corresponding to each card identification information of a plurality of cards to be issued. And an issuance data file to which each of the issuance data is provided with an encryption code indicating whether or not the issuance data is encrypted, and the issuance data file based on the card identification information. Reading means for reading each issue data of the issuance target card from; and identification means for identifying whether each issue data read by this read means is issued data encrypted based on the encryption code, The decryption means for decrypting the issuance data encrypted based on the identification result of the identification means, and the decryption means identifies that the data is not encrypted by the identification means. And summarized in that with a writing write means in a portable medium issuing data decoded by said decoding means with writing line data as it is to the portable medium.

Also, a plurality of issue data is stored corresponding to each card identification information of a plurality of cards to be issued, and whether or not each issue data is encrypted issue data in each of the issue data An issuance data file is configured by adding an encryption code indicating the issuance data file, and each of the issuance data of the card to be issued is read from the issuance data file based on the card identification information. Identify whether the issued data is encrypted based on the data, decrypt the encrypted issued data and write the decrypted issued data to a portable medium, and issue the unencrypted issued data for the issued data. Is written in the portable medium as it is.

(Operation) In the configuration described above, according to the present invention, it is possible to read out the issued data of the card to be issued based on the unencrypted card identification information, and to encrypt only the confidential data. Since it is stored and decrypted and recorded at the time of issuance, the processing speed is improved as compared with the case where all the issued data is decrypted and recorded.

Further, according to the present invention, since the data that needs to be decrypted is determined based on the contents of the issued data file without previously determining the data, the versatility of the apparatus is improved.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

First, FIG. 1 is a diagram schematically showing an entire issuing system as a recording device. In FIG. 1, reference numeral 1 denotes a host computer as control means, and 2 denotes an auxiliary storage device as storage means. The host computer 1 includes a control unit and a memory unit for temporarily storing data. Further, the auxiliary storage device 2 stores a control program for controlling the issuing system, an issuance data file which is a processing content of the system, and the like.

The host computer 1 is provided with a display 3 for indicating the operating procedure and status of the issuing system to the operator, and a keyboard 4 as an input device for performing the operation so that the issuing system can be operated. Further, the host computer 1 is connected to a printer 5 for outputting the date and time, the issued data file name, the card number, the number of issued cards, and the like in order to leave the issued record of the memory card 7 as a portable medium. When a card is issued, required issue data is written to a memory card 7 via a reader / writer 6 as a writing means attached to the host computer 1.

FIG. 2 shows the format of the issuance data file 10 described above. The issue data file 10 has a structure in which groups of issue data 13 are arranged with a 6-byte card number 11 at the top. In the example of the figure, the issue data 13 is Da
Named like ta1, Data2, ... An encryption flag 12 as a 1-byte encryption code is located before each issue data 13, and when this value is “A”, the subsequent issue data 13 is encrypted data. Yes,
This indicates that when writing to the memory card 7, it is necessary to decrypt and then write. When the value of the encryption flag 12 is “0”, it indicates that the issued data 13 can be written to the memory card 7 as it is. The decryption processing of the issuance data 13 is performed using a decryption key stored in the auxiliary storage device 2 in the form of a file and a predetermined decryption routine. .

Next, the card issuing process will be described with reference to the flowchart of FIG.

First, an operator inputs a data file name, a starting card number, a number of issued cards, and an issuer password from the keyboard 4 in accordance with an instruction displayed on the display 3 (step 15). These pieces of input information are stored in the memory unit of the host computer 1. The host computer 1 checks that the input issued data file is stored in the auxiliary storage device 2 (step 1).
6) If this is present (Yes in the same step), the issued data file is read into the memory unit, and it is checked that from the input start card number to the issued card number are present in the issued data file. (Step 17).

If this exists (Yes in step 17), the display on the display 3 requests insertion of the memory card 7.
In response to this request, after the operator inserts the memory card 7 into the reader / writer 6 (step 18), the issuer password input in step 15 and the memory unit in the inserted memory card 7 are stored in advance. The password is compared with the issuer password to confirm that the operator is the issuer (step 19). If the verification is successful (Yes in step 20),
The host computer 1 sends the first issue data 13 (Dat data) belonging to the start card number 11 (for example, “000001”).
It is checked whether the encryption flag 12 of “a1 etc.” is “0” or “A” (step 21). .., M (m is the number of issued data).

If the encryption flag 12 checked in step 21 is "A" (Yes in the same step), the decryption key stored in the auxiliary storage device 2 in the form of a file is read out and the host computer 1 The data is stored in the memory unit, and Data1 is decrypted using this key (step 22). Then, the decrypted Data1 is written to the memory card 7 via the reader / writer 6 (step 23). On the other hand, if the encryption flag 12 checked in step 21 is “0” (No in the same step),
Data1 is written to the memory card 7 as it is.

For example, assuming that the number of pieces of issued data for one person is m, each piece of issued data up to Data m following Data1 is written to the memory card 7 through the same procedure as described above (steps 21 to 25).

When the writing of all the issued data belonging to the start card number is completed, the memory card 7 is ejected from the reader / writer 6 (step 26), and the memory card 7 of the next card number (“000002”) is inserted on the display 3. Is required. Thereafter, similarly, after the writing for the number of issued sheets input in step 15 is completed (steps 18 to 27). The issuance record table outputs the issuance date, issuance data file name, issued data card number, issued number, and the like (step 29).

If an error occurs during the above card issuing process (E in the flowchart of FIG. 3), an error message is displayed on the display 3 and the process is terminated or interrupted.

[Effects of the Invention] As described above, according to the present invention, each of a plurality of pieces of issue data stored in the storage means is provided with an encryption code indicating whether or not the data is encrypted issue data. Therefore, when a portable medium is issued, it is possible to determine whether or not a decryption process is necessary by checking this encryption code for each issued data, thereby giving an advantage that the recording apparatus can be made versatile. is there.

[Brief description of the drawings]

1 to 3 show an embodiment of a recording apparatus for recording data on a portable medium according to the present invention. FIG. 1 is a block diagram showing an apparatus configuration, and FIG. 2 is a view showing a format of an issued data file. FIG. 3 is a flowchart for explaining the card issuing process. 1: host computer (control means), 2: auxiliary storage device (storage means), 6: reader / writer (writing means), 7: memory card (portable medium).

Claims (2)

(57) [Claims] A plurality of issuance data in which a plurality of issuance data are stored corresponding to each card identification information of a plurality of cards to be issued and each of the issuance data is encrypted. An issuance data file to which an encryption code indicating whether or not the card is present is provided; reading means for reading each issue data of the card to be issued from the issuance data file based on the card identification information; Identification means for identifying whether or not each read issue data is the issue data encrypted based on the encryption code; and decrypting the issue data encrypted based on the identification result of the identification means. Decryption means for performing, and the issuance data identified as not being encrypted by the identification means is written to a portable medium as it is, and the decryption means A recording device for a portable medium, comprising: a writing unit for writing the decrypted issued data to the portable medium. 2. A plurality of issued data are stored correspondingly to respective card identification information of a plurality of cards to be issued, and the issued data is encrypted for each of the issued data. An issuance data file is configured by adding an encryption code indicating whether or not the issuance data file is read, and the issuance data of the card to be issued is read from the issuance data file based on the card identification information. Identifies whether or not the issued data is encrypted based on the encryption code, decrypts the encrypted issued data and writes the decrypted issued data to a portable medium, and issues unencrypted issued data. Is a method for recording on a portable medium, wherein the issuance data is directly written on the portable medium.