JPH11261827A - Communication terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication terminal equipment capable of registering information used for the ciphering of images for each user. SOLUTION: In the RAM 13 of a facsimile equipment 1, a key bank table consisting of a 'key hint', a 'keyword' a 'user's name' and a 'password' is stored for every user. Thus, the danger that the keyword is inputted to the facsimile equipment 1 and the image data of cipher communication are pulled out from the facsimile equipment 1 by a third person is prevented. Thus, the function of the cipher communication is demonstrated further.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication terminal device represented by a facsimile device, a multifunction device having a copy function and a facsimile function, and more particularly to a communication terminal device having an encrypted communication function. It is.

[0002]

2. Description of the Related Art In recent years, various types of encryption have been performed in the field of data communication in order to secure data security.
For example, in the field of facsimile communication, the following encryption method is used. That is, in the facsimile apparatus on the transmission side, the image data of the read original is divided into blocks in predetermined units, and the arrangement is switched for each block unit. The rearranged encrypted image data is transmitted to the receiving-side facsimile apparatus, and information indicating the rearrangement order of each block is also transmitted to the receiving-side apparatus. The receiving-side facsimile apparatus restores the received encrypted image data based on the received rearrangement information.

[0003]

However, in the conventional apparatus, only one type of relocation information (keyword) is assigned to the facsimile apparatus.
Therefore, when a plurality of users use one facsimile machine, the rearrangement information is input to the facsimile machine by a third party, and the image data received by the encrypted communication is extracted from the facsimile machine. The danger that existed.

The present invention has been made in view of the problems existing in such prior art, and its purpose is to register information used for image encryption for each user. It is to provide a possible communication terminal device.

[0005]

According to one aspect of the present invention, an authentication code for identifying a plurality of users in a communication terminal device capable of performing encrypted communication. And information used for encrypting an image corresponding to the authentication code.

According to a second aspect of the present invention, in the communication terminal device according to the first aspect, input means for inputting an authentication code, an authentication code input from the input means, and an authentication code stored in the storage means. And control means for permitting change or deletion of information used for encryption when the values match.

According to a third aspect of the present invention, in the communication terminal device according to the second aspect, the storage means for storing a user name corresponding to the authentication code, and the information corresponding to information used for image encryption. Recording means or display means for recording the number or code to be used and the user name on the recording paper, and the control means records the number or code and the user name corresponding to the information used for encrypting the image. Means for recording on recording paper or displaying on display means.

In the embodiments of the invention described below, the “communication terminal device” described in the claims or the means for solving the problems corresponds to the facsimile device 1, and the “storage device” also corresponds to the RAM 13. Similarly, the “input means” corresponds to the numeric keypad 16a, the “control means” also corresponds to the MPU 11, the ROM 12, and the RAM 13, the “recording means” corresponds to the recording unit 15, and the “display means” similarly. It corresponds to the display unit 17.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a facsimile device 1 as a communication terminal device includes an MPU 1
1, ROM 12, RAM 13, reading unit 14, recording unit 1
5, an operation unit 16, a display unit 17, an image memory 18, a codec 19, a modem 20, an NCU 21, and an encryption unit 22. The units 11 to 22 are connected to each other via a bus 23.

The MPU 11 controls each unit constituting the facsimile machine 1. The ROM 12 stores a program for controlling the facsimile machine 1. RAM 13
Temporarily stores various information on the facsimile machine 1. The RAM 13 stores “N” as shown in FIG.
o "," Key hint "," Keyword "," User name "
And a key bank table T composed of items of “password”. If the information of each item is a fixed-length record, “No” is not stored, and “No” can be specified by counting the number of fixed-length records. Here, the “key hint” is a name associated with the “keyword”, and is information for suggesting to the recipient a keyword used to determine the order of image rearrangement. The key hint is transmitted as image data without being encrypted to the receiving device, and is recorded on a recording sheet together with the encrypted image data in the recording unit of the receiving device. And "keywords"
This is information indicating the rearrangement performed when performing encrypted communication. The “password” as the authentication code is, for example, a four-digit number and is used to identify a user.

The reading section 14 reads image data on a document and outputs black and white binary image data. The recording unit 15 is composed of an electrophotographic printer, and records received image data and image data of a document read by the reading unit 14 on recording paper in a copy operation.

The operation unit 16 includes a numeric keypad (including the * and # keys) 16a for inputting a telephone number and the like, an abbreviated number registration, and an abbreviated key 16b for transmitting from the abbreviated number.
Start key 1 for starting document reading operation
6c, communication / copy key 16d for setting "communication (FAX)" operation or "copy" operation, communication mode key 16e for setting communication mode to "ECM mode" or "non-ECM mode", encryption It is provided with various operation keys such as an encrypted communication key 16f for performing communication and a character input key 16g for inputting characters such as "key hint", "keyword", and "user name". LCD
The display unit 17 is configured to display various information such as the operation state of the facsimile machine 1.

An image memory 18 temporarily stores received image data and image data read by the reading unit 14 and compressed and encoded by the codec 19. The codec 19 transmits the image data read by the reading unit 14 to the MH,
Encoding is performed by the MR or MMR method or the like.
The codec 19 decodes the received image data.

The modem 20 conforms to ITU-T Recommendation T.30. 30 based on a facsimile transmission control procedure according to V.30. 1
7, V. 27ter, V.A. 29 etc. (hereinafter, V.17 etc.)
Modulation and demodulation of transmission / reception data according to any of the above. The modem 20 has a function of performing communication according to an ECM mode (error correction function) and a non-ECM mode. The NCU 21 has a function of controlling connection with the telephone line L and detecting transmission and reception of a dial signal corresponding to a fax number of the other party.

The encryption unit 22 includes a numeric keypad 16 of the operation unit 16.
On the basis of the keyword corresponding to the number input from a, the image data read by the reading unit 14 is divided into blocks for each predetermined unit, and the arrangement is changed for each block unit to obtain encrypted image data. The encrypted image data is encoded by the codec 19 according to the decoding capability of the receiving device, and transmitted to the receiving device via the modem 20 and the NCU 21. Also, the received encrypted image data is restored to the original image data based on the keyword corresponding to the number input from the numeric keypad 16a of the operation unit 16.

In the facsimile apparatus 1 configured as described above, the operation for registering, changing or deleting the contents of the items in the key bank table T will be described with reference to FIG.
And the flowchart shown in FIG. In this flowchart, operations other than operations performed by the user are executed under the control of the MPU 11 based on a program stored in the ROM 12.

In S1, a message (for example, input "No" to register, change or delete) is displayed on the display unit 17. In S2, the user inputs “No” in the key bank table T from the numeric keypad 16a of the operation unit 16.

In S3, it is determined whether or not each item ("key hint", "keyword", "user name", and "password") corresponding to "No" input in S2 has been already registered. Is determined. If already registered, the process moves to S8. On the other hand, if it has not been registered yet, the process proceeds to S4.

In S4, a message (for example, enter a key hint, a keyword, a user name and a password) is displayed on the display unit 17. In S5, the user inputs a key hint, a keyword, and a user name from the character input keys 16g. Further, the user inputs a password from the numeric keypad 16a.

In S6, the contents input in S5 are stored in the key bank table T of the RAM 13. In S7, the contents of "No" input in S2 and the "user name" corresponding to the "No" are recorded on recording paper by the recording unit 15.

In S8, a message (for example, already registered. Do you want to change or delete the registered content ?? YES ... 1, NO ... 0) is displayed on the display unit 17.

In S9, the user waits for "1" or "0" to be input from the numeric keypad 16a. In S10, the numeric keypad 16 in S5 is used.
It is determined whether the key input from “a” is “1”. If the input key is "1", that is, if the content of the registration is to be changed or deleted, the process proceeds to S11 shown in FIG.
On the other hand, when the input key is “0”, that is, when the contents of the registration are not changed or deleted, the process returns to S1.

In S11 shown in FIG.
A message (for example, enter your password) is displayed. In S12, the user inputs a password from the numeric keypad 16a.

In S13, it is determined whether the password input in S12 matches the password corresponding to "No" stored in the key bank table T of the RAM 13. If the passwords match, the process proceeds to S16. On the other hand, if the passwords do not match, the process proceeds to S14.

In S14, it is determined whether the number of times of inputting the password in S12 is within a predetermined number. If it is within the predetermined number, the process proceeds to S15. On the other hand, if the number has exceeded the predetermined number, this process ends.

In S15, a message (for example, enter a password again) is displayed on the display unit 17, and the process returns to S12. In S16, the display unit 17
(For example, enter change ... 1, delete ... 0).

In S17, "1" is set by the user.
Alternatively, it is waited that "0" is input from the ten key 16a. In S18, it is determined whether the key input in S17 is "0". If the input key is “0”, that is, if the registered content is to be deleted,
Move to 19. On the other hand, in the case of the input key “1”,
That is, when the content of the registration is changed, the process returns to S4 shown in FIG.

In S19, the contents of each item corresponding to "No" input in S2 are deleted from the key bank table T. As described above, according to the present embodiment, the following operations and effects can be obtained.

(1) The RAM 13 stores a key bank table T including a "key hint", a "keyword", a "user name", and a "password" for each user. For this reason, it is possible to prevent a third party from inputting a keyword and extracting image data of the encrypted communication from the facsimile apparatus 1. Therefore, the function of the encrypted communication can be further exhibited.

(2) To change or delete a keyword or the like for each user, it is necessary to input a password. For this reason, it is possible to prevent a third party from changing or deleting the keyword or the like. Therefore,
The confidentiality of keywords and the like can be improved.

(3) When a keyword or the like is changed,
The item contents of “No” and “user name” are recorded on recording paper by the recording unit 15. For this reason, the number corresponding to the information used for encrypting the newly set image can be confirmed on the recording paper while improving the confidentiality. Therefore, it is possible to quickly respond to an erroneous input.

(4) When a keyword or the like is changed,
Only the item contents of “No” and “user name” are recorded on the recording paper. Therefore, it is possible to prevent a keyword or the like from being known to a third party.

The above embodiment can be modified and embodied as follows. In the process shown in S7 of FIG. 3, the item contents of "No" and "user name" may be displayed on the display unit 17.

In addition, when displaying on the display unit 17, all items corresponding to "No" input in S2 may be displayed. Even with such a configuration, since the information is only displayed on the display unit 17, it is possible to check the setting contents while improving confidentiality.

Further, "N" in the key bank table T
The item content of “o” is a code (for example, A, B, C,.
・)) In other words, anything may be used as long as the item content of “No” is associated with the user name.

Any authentication code such as an electronic card or bar code may be used instead of the password input in the above embodiment. In this case, the authentication code is read in this case.
This is performed by a card reader, a bar code reader, or the like.

Further, technical ideas other than the claims grasped from the above embodiment will be described below together with their effects. [1] The communication terminal device according to claim 2, wherein the storage unit stores a user name corresponding to the authentication code,
A recording unit or a display unit for recording the number or code corresponding to the information used for encrypting the image and the user name on the recording paper is provided, and the control unit registers or registers the information used for encrypting the image. If there is a change, the number or code corresponding to the information used to encrypt the image,
And a communication terminal device for recording the user name on recording paper by a recording means or displaying the user name on a display means.

[2] In the communication terminal device according to claim 2, input means for inputting a user name, the storage means for storing a user name corresponding to the authentication code, and used for image encryption. Recording or recording means for recording the number or code corresponding to the information to be recorded and the user name on the recording paper. A communication terminal device for recording a number or code corresponding to information used for image encryption and a user name on recording paper by a recording means or displaying the same on a display means.

In the above embodiment, the above [2]
The "input means" described in the technical idea of
Equivalent to 6 g. According to the above configuration [1] or [2], when information used for encrypting an image is registered or changed, a number corresponding to the information used for encrypting a newly set image is used. Alternatively, the code can be confirmed on the recording paper or on the display means.

[3] The communication terminal device according to claim 2, wherein the authentication code is a password having a predetermined number of digits. With this configuration, the authentication code can be confirmed without adding a new device when inputting the password.

[0041]

Since the present invention is configured as described above, it has the following effects. According to the first aspect of the present invention, information used for image encryption can be registered in the storage unit for each user. Therefore, the function of the encrypted communication can be further exhibited.

According to the invention described in claim 2, according to claim 1
In addition to the effects of the invention described in (1), confidentiality of information used for image encryption can be improved. According to the third aspect of the invention, in addition to the effect of the second aspect of the present invention, a number or code corresponding to information used for encrypting a newly set image while improving confidentiality. Can be confirmed on recording paper or display means.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a facsimile apparatus according to an embodiment.

FIG. 2 is an explanatory diagram for explaining a key bank table.

FIG. 3 is a flowchart showing an operation when registering, changing, or deleting the content of an item in a key bank table.

FIG. 4 is a flowchart showing an operation when registering, changing, or deleting the content of an item in a key bank table.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Facsimile machine as a communication terminal device, 11 ... MPU which comprises a control means, 12 ... R which comprises a control means
OM, 13 ... RAM constituting storage means and control means,
15 ... Recording unit as recording means, 16a ... Numeric keypad as input means, 17 ... Display unit as display means.

Claims (3)

[Claims] In a communication terminal device capable of performing encrypted communication, storage means for storing an authentication code for identifying a plurality of users and information used for encrypting an image corresponding to the authentication code. A communication terminal device comprising: 2. The communication terminal device according to claim 1, wherein the input unit for inputting the authentication code and the authentication code input from the input unit match the authentication code stored in the storage unit. Control means for permitting change or deletion of information used for encryption. 3. The communication terminal device according to claim 2, wherein said storage means stores a user name corresponding to said authentication code, and a number or code corresponding to information used for encrypting an image, and said usage. Recording means for recording the user name on the recording paper or display means for displaying, and the control means records or records the number or code corresponding to the information used for image encryption and the user name on the recording paper by the recording means. A communication terminal device for displaying on a display means.