JPH10177550A - Display method for computer display screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically perform the encipherment in every display area by executing the proper input processes of plural display areas via a cursor and then ciphering automatically the input items of an area by removing the cursor from this area. SOLUTION: A cursor C is set at one of display areas d1 to d3 of specific classes 1 to 3 in the data fields 1 to 3 of plural classes which are shown on a screen D. Then the necessary input operations are carried out for the items of the area pointed by the cursor C via the operation of a keyboard. When the cursor C is removed from the pointed area, the input contents are automatically ciphered for one of areas d1 to d3 of a specific class that is previously inputted. Then the ciphered items are automatically encoded when the cursor C is returned to the relevant area, i.e., one of areas d1 to d3. When the areas d1 to d3 are decoded, three types of keys are needed for improvement of safety.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for displaying a display screen on a computer such as a personal computer or a workstation.

[0002]

2. Description of the Related Art Conventionally, when a plurality of data fields that can be currently input and operated are displayed on a display screen of a computer, the data fields to be input or operated are displayed. Focus is applied to select, i.e., the cursor is moved to that field.

[0003] A plurality of data displays displayed on a screen
When the field is selected by moving the cursor and the required items of the selected field are input, the displayed contents are kept displayed in the input data field. For this reason, it is necessary to hide the display from the screen when the user does not want an outsider or the like to read the item related to the highly confidential content. To do so, an operation for hiding the display is indispensable.

However, the operation of hiding the display contents of a plurality of data fields displayed on the screen each time is not only troublesome due to the increased number of operations but also troublesome.
When the display disappears, even the item displayed there may not be known.

In view of this point, conventionally, the entire display screen has been encrypted. However, if the entire screen is encrypted, it is not possible to selectively decrypt and display only the data field for which an input operation is to be performed, and it is necessary to decrypt and display the entire screen. There is a problem similar to the above in the screen displayed by decoding.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a display method free of the above-mentioned problems on a screen on which a plurality of data fields are displayed on a computer as described above. It is assumed that.

[0007]

SUMMARY OF THE INVENTION An object of the present invention, which has been made to solve this problem, is to provide a display control method comprising a plurality of classes to be subjected to an input operation displayed on a display screen of a computer. In response to this, an encryption key is held as an instance value, and a cursor is applied to a specific item of the displayed plurality of items, thereby enabling input for the item and After inputting the contents and inputting the contents as appropriate, the cursor is removed from the item, thereby displaying the input contents in the item in an encrypted manner, and the cursor is displayed in the item. By reapplying the item, the encrypted content of the item is decrypted and displayed on the screen.

Here, the cursor is made to hold each encryption key for each item extracted from the encryption class stored in the memory as an instance value of each class, and the cursor is stored in a specific item. By touching, you can input to a specific item. If you remove the cursor from that item, the input contents of each item will be encrypted by the encryption key assigned to each item, and the removed cursor will be re-entered. A function is provided for decrypting the input contents encrypted as described above.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view schematically showing the relationship between a display screen on which a plurality of data fields are displayed and the encryption key of each data field. FIG. 2 is an example of a processing system of the method of the present invention. It is a flowchart.

The present invention, data of plural classes displayed on the screen D of FIG. 1 - toffee - In field 1, 2, 3, Ca to any one of the display area d ₁ to d ₃ of a particular class 1-3 -Sol C
, And for the item in the area to which the cursor is applied, the keyboard is operated to perform a required input, and thereafter, the cursor C is removed from the input area.
The input contents of any of the display areas d _{1 to} d ₃ of the specific class previously input are automatically encrypted. When the cursor C is returned to any of the areas d _{1 to} d ₃ , the encryption is performed first. The decrypted item is automatically decrypted.

The encryption key for each item is, for example,
Because it is formed as an instance value of that class per each item display area d ₁ ~ of each class 1-3 of Figure 1
To decrypt d ₃ are three key - to require, high safety. The method of setting the encryption key in the present invention may be a mode other than the above example.

Next, the operation procedure of the method of the present invention will be described. First, input means such as a keyboard or a mouse is operated on a personal computer to display a plurality of classes of display areas on a display screen such as a CRT (step S1). Next, by operating the input means, the cursor is moved to the display area of the class to which an input is desired and applied to this area (step S2). For the display area to which the cursor is applied, it is determined whether or not the cursor is actually applied, and if the cursor is applied, the display area is ready for input. Put (Step
If the cursor is not applied to S3), it is determined that input is not possible, and the process returns to step S2.

For the display area to which the cursor is applied, it is determined in step S4 whether or not the area is an encrypted field. If the area is not an encrypted field, a conventional input operation is performed. (Step S5). If it is an encrypted field, it is determined whether or not the display item in that area is encrypted (step S6).

In step S6, if the area to which the cursor is applied is not yet encrypted, it can be input in step S7, but if it is already encrypted, it is decrypted in step S8. You. In this display area on which the input processing has been performed, whether or not the cursor is applied is always determined in step S9, and when the cursor comes off, the plain text input item in the display area is changed. As long as the data is encrypted (step S6) and the cursor is applied, input processing to the area can be performed. Therefore, the car
As long as the sol is assigned to an area in which input processing is possible, the display in that area remains in plain text, and input is also possible.

For the area where the input items are encrypted,
Returning to step S2, it is determined whether or not the cursor is always applied after step S3. Since the cursor is reapplied and the display remains encrypted unless passing through steps S4 and S6. , And plain text cannot be input from input means such as a keyboard. However, the cursor is again applied to this encrypted area, and if it is determined that the area is already encrypted, the display of this area is decrypted and returns to plain text (step S6, step S6). S8), and returns to the input enabled state again (step S7).

[0016]

As described above, according to the present invention, in two or more display areas displayed on the display screen of the computer, the area to which the cursor is applied can be input, and Then, after performing an appropriate input process, the cursor is removed from the area, so that the input item displayed in plain text in the input area is automatically encrypted. Can be automatically performed for each display area, and as a result, there is no need to pay attention to encryption, and only the necessary area can be encrypted.

Also, the encrypted display area can be automatically decrypted by reapplying the cursor to display plain text items. Therefore, the input items of the encrypted area are also selected for each area. In this way, the display screen of the computer can be conveniently handled.

Further, since a plurality of display areas are provided with different keys for each area, that is, for each data field, the encryption algorithm can be made more robust and robust.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing a relationship between a display screen on which a plurality of data fields are displayed and an encryption key of each data field.

FIG. 2 is a flowchart showing an example of a processing system of the method of the present invention.

[Explanation of symbols]

1,2,3 data field C cursor d _{1 to} d ₃ display area

Claims (1)

[Claims] An encryption key is stored as an instance value for each of a plurality of class items to be subjected to an input operation displayed on a display screen of a computer.
A cursor is applied to a specific item in the displayed plurality of items to enable input of the item, and after the input operation is performed in this item and the content is appropriately input, the cursor is input. By removing the cursor from the item, encrypting and displaying the input content in the item, and decrypting the encrypted content of the item by reapplying the cursor to the item. A method for displaying a computer display screen, comprising displaying the screen.