JPH05244150A - Method and device for intelligent information processing - Google Patents

Abstract

PURPOSE:To use the intra-file access right in accordance with the level of secrecy by performing the coding and ciphering operations with use of an error correction code, a ciphering technique and a cihper key and then processing the information with the decoding and deciphering operations. CONSTITUTION:A ciphering means 3 ciphers each part with use of a ciphering technique and a cipher key in accordance with the level of secrecy of each part and then codes each part with use of an error correction code accordant with the secrecy degree of each par. At the reception side, a date production/ information processing means 1 receives the data and the file information or calls these data and information out of an auxiliary memory 9 to check a password and the cipher key. When this check succeeds, a decoding means 5 performs a decoding operation with use of the error correction code accordant with the level of reliance. Then a deciphering means 6 performs a deciphering operation with use of the ciphering tequnique and the cipher key accordant with the secrecy level. Furthermore the means 1 processes the information as necessary.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intelligent information processing method and apparatus for applying error correction code and encryption technology to arbitrary information parts in information transmission and processing of documents, figures, images, databases and the like. ..

[0002]

2. Description of the Related Art In transmitting and processing information such as documents, graphics, images and databases, it is necessary that the information be transmitted without error and that it is not intercepted by a third party. An error correction code technique is used for the former, and an encryption technique is used for the latter. Information security measures are important. In transmitting and processing information such as confidential documents, graphics, images, databases, etc., line encryption and full-text encryption of files are used before transmission.
In addition, access control by password is performed for file management by a computer, and the access right is given to each file. That is, when performing an operation such as reading and writing a file, the user first inputs the password, checks whether it is registered and has the operation right of the target file, and when the inspection passes. Only operation is allowed.

The encryption of the file encrypts the entire file. Therefore, since the information manager flattens the entire file to manage the file, the information manager can know all the information input to the computer or stored in the storage device. Even when a document is encrypted and transmitted, it is usual that the secretary completes the document and then encrypts it. Similarly, the operator can see the plain text even when the line is encrypted and transmitted.

In the case of line encryption, encryption is performed in request / response units, but the encrypted portion cannot be freely specified. Also, the data record is encrypted on a field-by-field basis, but it cannot be freely specified. Of course, partial encryption cannot be done within that unit. These ciphers are managed by a security guardian who has access to all ciphertexts. Therefore, the idea of using various encryption keys and using them to diversify the access authority has not yet been born. In particular, the document creator himself is given the highest access right to confidential documents and data, or only the document creator himself is allowed to access the information without letting the security guardian or information administrator know the contents of the ciphertext. It is a feature of the present invention that makes it possible to carry out the above. This idea is effective for newly improving the efficiency of information management and realizing a flexible system.

In the facsimile, the confidential text is written on a separate sheet and encrypted by line encryption. In this case, continuous processing is not performed, and it is considered that encryption is performed in file units. There is also a method of changing the error correction code according to the importance of the word.

[0006]

[Problems to be Solved by the Invention] Generally, documents, figures,
Information such as images and databases can be considered to have attributes of reliability and confidentiality for each part. For example,
The amount of money needs to be highly reliable, and sentences such as greetings may be less reliable, that is, some errors are allowed.
Also, it is considered that the release price and the release time of a new product should be kept secret for a certain period of time, that is, the confidentiality is high. In the conventional information transmission and processing, the attributes of reliability and confidentiality of these information parts are ignored, and collective coding and encryption are performed. This makes it impossible to perform intelligent and efficient information transmission and processing that makes the most of the informational properties (attributes) of the information part. The processing speed also becomes slow.

If the secretary completes the document and then encrypts the entire text, the secretary will know the confidential information. Similarly, in line encryption, the operator can see the plain text.
In file management, the information administrator has the highest access right in the method of checking the access right with a password and the full-text encryption method. Therefore, confidential information such as personnel information is often not input to the computer. Therefore, efficient encoding and encryption that make the most of the attributes of information are required, and further, it is desirable that information can be transmitted and processed without the secret information being known to secretaries, line encryption operators, and information managers. ..

The present invention has been made to solve the above problems, and divides an arbitrary portion of information,
An intellectual property that sets the attributes of reliability and confidentiality, performs processing using error correction codes and encryption techniques corresponding to them, and at the same time enables to use the access right in the file corresponding to the confidentiality. An object is to provide an information processing method and device.

[0009]

A first intelligent information processing method according to the present invention uses a level from 0 to m as a reliability level in information transmission and processing of documents, figures, images and the like, and , Using the level from 0 to n as the confidential level, set the attribute of the reliability level and the confidential level to each arbitrary part of the information on the display unit such as CRT,
Using the error correction code and encryption technique and encryption key according to each, perform the encoding and encryption, information processing, transmission, and storage, the following procedures (1) to (6), and
It is characterized by including the following steps (7) to (11) for receiving coded and encrypted data or calling from an external memory, performing decoding and plain culture, and processing information.

(1) Procedure for creating data such as a document, a figure, and an image. (2) A procedure for classifying arbitrary parts of information and setting attributes of reliability level and confidentiality level to each part of the information. (3) Procedure to check password and encryption key. (4) Procedure to encrypt each part of information using the encryption method or encryption key according to the confidentiality level. (5) Procedure for encoding each part of information using an error correction code according to the reliability level thereof. (6) A procedure for performing processing such as transmission or storage of encoded and encrypted information. (7) Procedure to receive data or file or call from external memory. (8) Procedure to check password and encryption key. (9) Procedure to decrypt each part of information according to the reliability attribute. (10) A procedure to flatten each information section according to the confidentiality attribute. (11) Procedure for performing information processing.

The first intelligent information processing apparatus according to the present invention uses a level of 0 to m as a reliability level in information transmission and processing of documents, figures, images, etc.
Further, by using the level from 0 to n as the confidentiality level, the attribute of the reliability level and the confidentiality level is set to each arbitrary part of the information on the display unit such as the CRT, and the error corresponding to each is set. Using the correction code and the encryption technique and the encryption key to perform the encoding and the encryption, the information processing and the transmission,
Saving, processing the information by performing the following (1) to (6) means and receiving encoded data or calling the encoded data from an external memory, decrypting and plain writing,
The following (7) to (11) means are included.

(1) A means for creating data such as a document, a figure, and an image. (2) A means of classifying any part of information and setting attributes of the reliability level and the confidentiality level to each part of the information. (3) Means for checking passwords and encryption keys. (4) A means for encrypting each part of information using an encryption method or encryption key according to the confidentiality level. (5) A means for encoding each information part using an error correction code corresponding to the reliability level thereof. (6) A means for performing processing such as transmission or storage of encoded and encrypted information. (7) A means of receiving data or files or calling them from external memory. (8) A means for checking passwords and encryption keys. (9) A means for decoding each part of information according to the reliability attribute. (10) A means of flattening each part of information according to the confidentiality attribute. (11) Means of performing information processing.

The second intelligent information processing method according to the present invention, when a confidential file is stored and managed in a disk or the like, the headline and the information portion required for file management are set in plain text, Include a procedure for encrypting sensitive parts and a procedure for directly managing or retrieving information necessary for file management such as plaintext headings and keywords while including ciphertexts Is characterized by. In addition, the second intelligent information processing apparatus according to the present invention keeps a headline and an information portion necessary for file management in plain text when storing and managing a confidential file in a disk or the like, and requires confidentiality. And a means for performing file management by directly operating or retrieving information necessary for file management such as headings of plaintext parts, keywords, etc., while including the ciphertext. To do.

It should be noted that "A and / or B" described below represents only A, only B, and A and B. In addition, the third intelligent information processing method according to the present invention is applicable to any data item, record (row information), or entire data item (column information) of the database system, in terms of its reliability level and / or confidentiality level. And a procedure for performing encoding and / or encryption, decryption, and / or plain culture using a corresponding error correction code and / or encryption technique and encryption key. It is characterized by

The third intelligent information processing apparatus according to the present invention is an arbitrary data item of a database system,
A means to set the attribute of the reliability level and / or the confidentiality level to the record (row information) and the entire data item (column information), and the error correction code and / or the encryption technique and the encryption key corresponding to each. Means for performing encoding and / or encryption, decryption and / or plain culture.

Further, the fourth intelligent information processing method according to the present invention takes a database item as a single file and divides an arbitrary portion of information in the item, and the reliability of each portion. Using the procedure for setting the level and / or the sensitivity level attribute and the corresponding error correction code and / or encryption technique and encryption key,
Encoding and / or encryption, decryption and / or plaintext procedures.

Further, the fourth intelligent information processing apparatus according to the present invention regards the items of the database as one file and divides an arbitrary part of the information in the item, and the reliability of each part. Using means for setting level and / or confidentiality level attributes and corresponding error correction code and / or encryption techniques and encryption keys,
Means for performing encoding and / or encryption, decryption and / or plain culture.

A fifth intelligent information processing method according to the present invention is a confidential level from 0 to n (levels 0 and 1 only) in information transmission and processing of documents, figures, images, databases and the like. (Including the method of using), on a display unit such as a CRT,
In particular, in a database, the confidential level attribute is set for any item of the database, any record, any data item or any part of the information in the item, and the encryption technique according to each is set. In addition, in the information processing for encryption and plain culture using the and encryption key, set the access authority level corresponding to the sensitivity level, and use the password and encryption key to access the information part according to the level. It is characterized in that it includes a procedure for limiting to a plurality of specific persons.

The fifth intelligent information processing apparatus according to the present invention is a confidential level from 0 to n (only levels 0 and 1) in information transmission and processing of documents, figures, images, databases and the like. (Including the method of using), on a display unit such as a CRT,
In particular, in a database, the confidential level attribute is set for any item of the database, any record, any data item or any part of the information in the item, and the encryption technique according to each is set. In addition, in the information processing for encryption and plain culture using the and encryption key, set the access authority level corresponding to the sensitivity level, and use the password and encryption key to access the information part according to the level. It is characterized by including a means for limiting to a plurality of specific persons.

Further, the sixth intelligent information processing apparatus according to the present invention keeps the information portion required for file management and encryption processing in plain text when line-encrypting and transmitting confidential files and data. It is characterized in that it comprises means for encrypting a confidential part, means for further line encryption of files and data containing ciphertext, and means for transmitting the same.

Further, the seventh intelligent information processing apparatus according to the present invention, when transmitting a document by using a facsimile, provides a seal attachment area in the transmitted document and farther seals such as a bar code and has a line counting function. By using, for example, line-by-line or dot-by-dot, etc., a means for distinguishing ordinary sentences and confidential sentences in the same page, and ordinary sentences are transmitted normally, and confidential sentences are encrypted by switching to the encryption function. On the receiving side, the whole text including the ciphertext is stored in the storage device, and only the normal text is printed out, and then the plaintext and printing of the ciphertext is performed by using the password and the encryption key. And a means for limiting the processing of (1) to only a specific person.

The eighth intelligent information processing method according to the present invention registers an encryption key to be used for each device or software to be used, creates a history list of the encryption key, and saves the encrypted list in some cases. However, when the encryption key is forgotten or lost, the history list is used to search, verify, and find out the encryption key used for the file or its portion.

[0023]

In the first intelligent information processing method and apparatus of the present invention, attributes of reliability level and secrecy level are assigned to arbitrary parts of information in information transmission and processing of documents, figures, images and the like. After setting, after the password and encryption key are registered and checked, encoding and encryption are performed using the error correction code and encryption technique and encryption key corresponding to each, and information processing, transmission, and storage are performed. Done. Then, when the data is received or called from the external memory, the decryption and the plaintext are performed.

A second intelligent information processing method according to the present invention,
When storing a confidential file on a disk or the like and managing it, the device keeps the headline and the information portion necessary for file management in plain text, and the confidential portion is encrypted, and the ciphertext remains included. File management is performed by directly operating or retrieving information necessary for file management, such as headings of plain text parts and keywords.

A third intelligent information processing method of the present invention,
The device sets an attribute of its reliability level and / or sensitivity level to any data item, record (row information), or entire data item (column information) of the database system, and the error correction code corresponding to each is set. Encoding and / or encryption, decryption and / or plaintext is performed using encryption techniques and / or encryption techniques and keys.

Further, a fourth intelligent information processing method of the present invention,
The device treats each item in the database as a single file, divides any part of the information in the item, and sets a confidence level and / or a confidentiality level attribute for each part. Coding and / or encryption, decryption and / or plaintext is performed using correction code and / or encryption techniques and encryption keys.

The fifth intelligent information processing method of the present invention,
The device uses a level from 0 to n (including a method of using only levels 0 and 1) as a confidential level in information transmission and processing of documents, figures, images, databases, etc. Above, secrecy level attributes are applied to any part of the information, in particular any item in the database, any record, any entire data item or any part of the information in the item in the database. When set, the encryption technique and encryption key are used to perform encryption and plain culture, and the access privilege level is set according to the sensitivity level. Then, the access of the information part is limited to a plurality of specific persons according to the level.

Further, the sixth intelligent information processing apparatus of the present invention keeps the information portion required for file management and encryption processing in plain text when line-encrypting and transmitting confidential files and data. Only the part that requires confidentiality is encrypted, and the file and data containing the ciphertext are further line encrypted and transmitted.

In addition, the seventh intelligent information processing apparatus of the present invention, when transmitting a document using a facsimile, provides a seal attachment area in the transmitted document and farther seals such as a bar code and uses the line counting function. As a result, normal text and confidential text in the same page are classified by line or dot, normal text is transmitted normally, and sensitive text is encrypted by switching to the encryption function. To be done. On the receiving side, once the entire text including the ciphertext is stored in the storage device, only the normal text is printed out and then the password,
Use cryptographic keys to limit processing such as plain text and printing of ciphertexts to specific persons.

The eighth intelligent information processing method of the present invention registers an encryption key to be used for each device or software to be used, creates a history list of the encryption key, and in some cases, stores the encrypted key. Therefore, when the encryption key is forgotten or lost, the history list is used to search, verify, and find the encryption key used for the file or its part.

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings showing the embodiments thereof. FIG. 1 is a flowchart of an intelligent information processing method according to the first invention, and FIG. 2 is a block diagram of an apparatus used for carrying out the method. Data such as documents, figures, and images are input to the control unit 10 by a keyboard, a mouse, a camera, and the like (not shown in FIG. 2). The control unit 10 is composed of a microprocessor and performs data processing according to a control program written in the memory 7. Hereinafter, description will be made assuming a virtual block having this processing function. Note that ()
The numbers inside are the numbers of the procedure in FIG. Data is created and processed by data creation / information processing means 1.
(1). Classification of each part of information, and its reliability / confidence level setting means 2 divides each arbitrary part of information on the display part 8 such as a CRT, and a reliability level (0 to m) is assigned to each part. Set the secrecy level (0 to n) attribute (2). Then, the data creation / information processing means 1 registers and checks the password and the encryption key (3). Then, first, the encryption means 3 encrypts each part using the encryption technique and the encryption key according to the confidentiality level (4). Then, the encoding means 3 encodes each unit using an error correction code corresponding to the reliability level thereof (5). Then, the data creation / information processing means 1 performs transmission and storage (6). Now, on the receiving side,
The data creation / information processing means 1 receives information such as data and files or calls it from the auxiliary memory (external memory) 9 (7), and then checks the password and encryption key (8). If the inspection is passed, the decoding means 5 performs decoding with an error correction code according to the reliability level (9). Then, the plain culture means 6 carries out the plain culture by using the encryption technique and the encryption key according to the confidentiality level (10). Further, if necessary, data processing / information processing means 1 performs information processing (11).

Now, FIG. 3 shows an example of setting the information attribute on the screen. \ [,] \ And the like are used as delimiters for dividing each information part, and the part sandwiched between them is the confidentiality level 1 and the reliability level 0. Fourth
The figure is a set information attribute table. Since it is not preferable to use a delimiter for figures, images, etc., the coordinates of two points are designated with a mouse or the like, and a rectangular information attribute with the diagonal line as the coordinate is set. For encoding and encryption,
This information attribute table is used. When the reliability level is 0, the information remains unchanged. Since the higher the level number, the more error is not allowed, a long check bit is added when encoding. When the confidential level is 0, the information remains in plain text. The higher the level number, the more information is tapped,
Leakage is not allowed, so use a more complex cipher. However, there is also a case where one type of reliable encryption is used and only different encryption keys are used, but this is the case where in-file access is used and will be described later.

The procedure of the flowchart of FIG. 1 does not necessarily have to be in this order. There are various variations, but I will omit them. Now, in the intelligent information processing method and apparatus according to the first aspect of the present invention, both reliability and confidentiality are used. This means that a 1-bit error in a ciphertext will be an error of several bits when the plaintext is used. That is, since there is a tendency to be vulnerable to errors, there is an advantage in using encryption and error correction code together. Of course, a system using only one of them is also possible. With respect to this, it is sufficient to omit the reliability or the secrecy which is not used in the intelligent information processing method and apparatus according to the first aspect of the present invention.

The direct effects of the intelligent information processing method and apparatus of the first invention are efficient encoding and encryption and improvement of processing speed, but there are various other effects as described below.
FIG. 5 is an example of a file used in the intelligent information processing method and apparatus according to the second invention. When storing confidential files on a disk or the like for management, keep the heading and the information part 1 required for file management in plain text (partial cipher may be used) and encrypt the sensitive text 2 (partial). May be encrypted). Then, the file management is performed by directly operating or retrieving the information necessary for file management such as the header of the plaintext portion and the keyword while including the ciphertext. This facilitates file management, improves efficiency, and prevents the information administrator from knowing the content of the ciphertext.

It should be noted that "A and / or B" described below represents only A, only B, and A and B. FIG. 6 is a flow chart of the intelligent information processing method according to the third invention, and is an example in which an arbitrary item is encrypted and encoded and registered. Generally, any data item, record (row information), or entire data item (column information) of the database system is set with its reliability level and / or confidentiality level attribute, and an error correction code corresponding to each is set. And / or encryption techniques and keys are used to perform encoding and / or encryption, decryption and / or plaintext. The same applies to processing for search, plain culture and records, and entire data items.

The intelligent information processing apparatus according to the third invention is the same as that shown in FIG. 2 if the data creating / information processing means 1 of the first invention has a database processing function. Now, FIG. 7 is an example of setting the information attribute of the relational database. (a) is a case where an information attribute is set for each data item, (b) is an entire record, and (c) is an information attribute for the entire data item. 8th
The figure is an example of attribute setting for one record / screen. At the same time as setting the attribute to an arbitrary item, the attribute of the entire record is collectively set using the reliability / encryption attribute setting column on the upper right of the screen.

The intelligent information processing method and apparatus according to the fourth aspect of the present invention capture the items of the database as one file,
Divide any part of the information in the item into each part,
Set the confidence level and / or sensitivity level attributes. Then, the encoding and / or the encryption, the decryption, and / or the plain culture are performed by using the error correction code and / or the encryption technique and the encryption key corresponding to each.
Since the present invention is composed of the first and third inventions, details thereof will be omitted.

FIG. 9 shows the access authority level in the file and database of the intelligent information processing method, device according to the fifth invention. In this invention, documents, graphics, images,
In information transmission and processing such as a database, the level of 0 to n (including the method of using only levels 0 and 1) is used as a confidential level, and each arbitrary part of information is displayed on the display unit such as a CRT. In particular, in the case of a database, the confidential level attribute is set to any item of the database, any record, any data item or any part of the information in the item, and encryption according to each is performed. Encryption and plain culture using the techniques and encryption keys of. Then, the access authority level is set corresponding to the confidentiality level, and the access to the information portion is limited to a plurality of specific persons according to the level by using the password and the encryption key. That is, a new concept is used in which the access authority given to each file is brought into the file and the file access authority is set.

For example, when the confidential level 0, 1, 2, 3 is used, the authority to access the corresponding portion is the access authority 0, 1, 2, 3 respectively. Therefore, the president has access rights 0, 1, 2, 3 and owns the encryption keys of levels 1, 2, 3. The executive has access rights 0, 1, and has the level 1 and 2 encryption keys. Level 0 is plain text and anyone can read it. Also, a password may be used together. And since it is a partial encryption, the file management can be performed with the ciphertext as it is, so that the information management can be performed without giving the information administrator all access rights. Therefore, it becomes possible for the document creator or the president to have the highest access right. Even if there is a security guardian, access rights can be limited.

The method and apparatus according to the present invention are as follows:
Since it is composed of the third and fourth inventions, its details are omitted. Next, as the simplest embodiment of the present invention, a first flowchart of a transmission unit of a document processing system by partial encryption will be described.
FIG. 0 shows a flow chart of the receiving unit in FIG. First
FIG. 2 shows an example of the operation on the screen. Here, the error correction code is not used. Therefore, the reliability level is only 0. Further, the confidentiality levels are 0 and 1, and therefore the access authority levels are 0 and 1. For the sake of clarity, the operator of the document processing system is the president and secretary. Access secret level 0 is assigned to the secretary, and processing of only ordinary sentences is permitted. Access privilege level 1 is assigned to the president, and processing of ordinary text and ciphertext is permitted. Here, the encryption / plain culture tool is a software program having encryption and plain culture functions, and this program is added to a normal document processing system. An operation example will be described below.

First, the secretary uses a word processor or the like to create a plaintext on the screen 1 in FIG. 12 (1). It may be stored in the auxiliary storage device or displayed on the screen, but the operation is exchanged with the president. The president enters the confidential text in regular text. As shown in screen 1, put this sentence between the special symbols \ [,] \. Then, save it (2). Next, start the encryption software and enter the password and encryption key known only to the president (3). Then, the document file saved previously is called to execute encryption (4). When executed, it may be encrypted as it is, but here, first, the confidential text sandwiched between \ [,] \ is made empty, or converted to the special symbol ◇ as shown in screen 2 of Fig. 12 (5 ). Then encryption is performed. Although a ciphertext in binary mode can be obtained, in consideration of versatility, it is converted into a hexadecimal ASCII code and sequentially added after the # * symbol at the end of the sentence as shown in screen 2 of FIG. 12 (6). This conversion for generalization is not necessary when using document processing and communication software that can use binary mode. When the encryption is completed, the * # symbol is added to the end of the ciphertext and the ciphertext is saved in the auxiliary storage device, and the ordinary text file is deleted (7). When transmitting the document file, the secretary activates the communication software and transmits the ciphertext file.
(8).

Next, the flat culture processing will be described. When the information is received by an auxiliary storage device such as a diskette or a hard disk, or when it is received, the secretary checks the plain text portion with a word processor or the like. If you receive it directly online and display it on the screen, check the plain text and save it once in the auxiliary storage device (9). Next, the president activates the encryption software, inputs the password, selects the plain culture process, and inputs the encryption key (10). Then, the ciphertext file is called to execute plain culture (11). Convert the hexadecimal ASCII code ciphertext after # * to binary mode (12), and insert the plaintext into plain text into the special symbol ◇ between \ [,] \ (13) .. When the flat culture process ends, the screen in Figure 12 1
Return to the state of. Save it once, start a word processor, etc. to edit, print, etc., and then delete the normal sentence file if necessary (14). Through the above operations, the president can perform document processing and communication without the secretary knowing the confidential data.

By incorporating the encryption / plaintext processing into a word processor or the like, the processing can be continued with the document displayed on the screen without being saved, but the principle is the same as that described above. In addition, this method can be directly applied to system such as e-mail, electronic cabinet, database or personal file management. Also,
It is also possible to display a mail containing a ciphertext on an electronic bulletin board, and only the group who owns the cipher key can restore and obtain the plaintext. In the intelligent information processing apparatus according to the sixth aspect of the invention, when files and data that require confidentiality are line-encrypted and transmitted, the information portion required for file management and encryption processing remains plain text and the confidential portion is required. In advance, the person in charge will encrypt the data. Then, the file and data containing the ciphertext are line-encrypted and transmitted by the cryptographic operator. This prevents the cryptographic operator from knowing the confidential information. For this purpose, the device of the first invention may be used in addition to the line encryption device.

FIG. 13 is a principle diagram of an intelligent information processing apparatus (facsimile partial encryption apparatus) according to the seventh invention.
First, on the sending side, send sheet 1 is created. Then, a message sticker such as a bar code is attached to the sticker attachment area. In FIG. 13, \ S means the beginning of the document and \ E means the end of the sentence. Then, \ B means the beginning of the confidential text block, and \ T means the end of the confidential text block. Here, the confidential text area is set for each line. Then, for example, input that the confidential text is included is input by the number button of the facsimile, then the document number is input, and the transmission button is pressed to transmit. The plaintext is sent as it is, and the confidential text is encrypted before being sent.

When the receiving side receives the document containing the ciphertext, only the ordinary text is printed on the receiving paper 2, and the mark @ indicating the location of the ciphertext is printed at the ciphertext portion. At the same time, the entire text including the ciphertext is stored in the auxiliary memory 3.
The secretary usually confirms the sentence and contacts the president. The president inputs a password, an encryption key, and a document number into a facsimile, performs plain culture processing using the facsimile encryption function, and prints a plain text. In the above operation, the secretary can know the information on the transmitting side, but only the president can know the confidential sentence on the receiving side.

In the intelligent information processing method according to the eighth aspect of the present invention, an encryption key to be used is registered for each device or software used, a history list thereof is created, and in some cases encrypted and stored, and encrypted. When the key is forgotten or lost, the history list is used to search, verify, and find the encryption key used for the file or its part.

[0047]

As described above, the present invention has the following effects. (1) By setting the reliability of each part of the file or the information transmitted, the reliability level and the confidentiality level according to the confidentiality level, and by using the error correction code and the encryption method corresponding to each, the efficiency can be improved. It enabled the general encoding and encryption. (2) Partial encryption / encoding improves information processing speed compared to full-text encryption / encoding. (3) By setting the access authority level in the file or transmission information corresponding to the confidentiality level and allowing only the specified person to use the password and encryption key, it is possible to limit the access of confidential information to the specified person. And (4) Allowing a mixture of plaintext and ciphertext in a file, adding file management information in plaintext, and operating only the confidential part as ciphertext enables efficient file management. (5) The access authority for confidential information can be limited to the document creator (which can be the president) or the person directly responsible for business, and it is possible not to give the information administrator the highest access authority. For example, let the secretary write plaintext, and the president can insert the secret text into the document without the secretary knowing. (6) It is possible to prevent the misuse or loss of the encryption key by using the encryption key history list. (7) A flexible security management system can be constructed. (8) A flexible electronic document system can be constructed. Although the present invention can be applied to a large-scale machine, it is particularly effective for networks, workstations, and personal computers for which security is difficult to establish.

[Brief description of drawings]

FIG. 1 is a flowchart of an intelligent information processing method according to a first invention.

FIG. 2 is a block diagram of an apparatus used for implementing the first invention.

FIG. 3 is a setting example of information attributes on a screen.

FIG. 4 is a set information attribute table.

FIG. 5 is an example of a file used in the intelligent information processing method and apparatus of the second invention.

FIG. 6 is a flowchart of an intelligent information processing method of a third invention.

FIG. 7 is a setting example of information attributes of a relational database.

FIG. 8 is an example of attribute setting for one record / screen.

FIG. 9 is an access authority level in a file and a database of the fifth invention.

FIG. 10 is a flowchart of a transmission unit of the document processing system using partial encryption.

FIG. 11 is a flowchart of a receiving unit of a document processing system using partial encryption.

FIG. 12 is an example of the operation on the screen of the document processing system by partial encryption.

FIG. 13 is a principle diagram of a facsimile partial encryption device of a seventh invention.

[Explanation of symbols]

[FIG. 2] 1 data creation / information processing means 2 information division / reliability / confidence setting means 3 encryption means 4 encoding means 5 decryption means 6 plain culture means 7 memory 8 CRT display section 9 auxiliary Memory 10 microprocessor

FIG. 5: 1 heading section and file management section 2 data body

[Fig. 12] 1 plaintext screen 2 ciphertext screen

FIG. 13: 1 transmission sheet 2 reception sheet 3 auxiliary memory

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] February 19, 1993

[Procedure 3]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 4]

[Figure 9]

[Figure 1]

[Figure 6]

[Fig. 2]

[Figure 3]

[Figure 5]

[Figure 7]

[Figure 8]

[Fig. 12]

[Fig. 13]

[Figure 10]

FIG. 11

Claims (17)

[Claims] 1. In information transmission and processing of documents, graphics, images, etc., a level of 0 to m is used as a reliability level, and a level of 0 to n is used as a confidentiality level, such as CRT. On the display unit, attributes of reliability level and confidentiality level are set for each arbitrary part of information, and encoding and encryption are performed by using an error correction code and an encryption technique and an encryption key corresponding to each. The following steps (1) to (6) for information processing, transmission, and storage are performed, and encoded and encrypted data is received or called from an external memory, decrypted, and plain-text is used for information processing. An intelligent information processing method comprising the following steps (7) to (11) for performing processing. (1) Procedure for creating data such as documents, figures, and images. (2) A procedure for classifying arbitrary parts of information and setting attributes of reliability level and confidentiality level to each part of the information. (3) Procedure to check password and encryption key. (4) Procedure to encrypt each part of information using the encryption method or encryption key according to the confidentiality level. (5) Procedure for encoding each part of information using an error correction code according to the reliability level thereof. (6) A procedure for performing processing such as transmission or storage of encoded and encrypted information. (7) Procedure to receive data or file or call from external memory. (8) Procedure to check password and encryption key. (9) Procedure to decrypt each part of information according to the reliability attribute. (10) A procedure to flatten each information section according to the confidentiality attribute. (11) Procedure for performing information processing. 2. The intelligent information processing method according to claim 1, wherein only the confidential level is used as an information attribute, and the level from 0 to n is used (level 0,
(Including the method of using only 1), a procedure for dividing an arbitrary portion of information on a display such as a CRT, a procedure for setting an attribute of a confidential level in each portion of the information, and encryption according to each And a procedure for performing encryption and plain culture using an encryption key. 3. The intelligent information processing method according to claim 1, wherein only the reliability level is used as the information attribute, and the level from 0 to m is used (level 0,
(Including the method of using only 1), a procedure for dividing an arbitrary portion of information on a display such as a CRT, a procedure for setting an attribute of a reliability level in each portion of the information, and an error corresponding to each. An intelligent information processing method comprising: a procedure of performing encoding and decoding using a correction code. 4. In information transmission and processing of documents, figures, images, etc., a level of 0 to m is used as a reliability level, and a level of 0 to n is used as a confidentiality level, and a CRT or the like is used. On the display unit, attributes of reliability level and confidentiality level are set for each arbitrary part of information, and encoding and encryption are performed by using an error correction code and an encryption technique and an encryption key corresponding to each. The following means (1) to (6) for performing information processing, transmission, and storage, and receiving or calling the encoded and encrypted data from an external memory, decrypting, and performing plain culture are performed. An intelligent information processing apparatus including the following means (7) to (11) for performing processing. (1) A means for creating data such as documents, figures and images. (2) A means of classifying any part of information and setting attributes of the reliability level and the confidentiality level to each part of the information. (3) Means for checking passwords and encryption keys. (4) A means for encrypting each part of information using an encryption method or encryption key according to the confidentiality level. (5) A means for encoding each information part using an error correction code corresponding to the reliability level thereof. (6) A means for performing processing such as transmission or storage of encoded and encrypted information. (7) A means of receiving data or files or calling them from external memory. (8) A means for checking passwords and encryption keys. (9) A means for decoding each part of information according to the reliability attribute. (10) A means of flattening each part of information according to the confidentiality attribute. (11) Means of performing information processing. 5. The intelligent information processing apparatus according to claim 4, wherein only the confidential level is used as the information attribute, and the level from 0 to n is used (level 0,
(Including the method of using only 1), a means for dividing an arbitrary part of information on a display part such as a CRT, a means for setting a confidential level attribute for each part of the information, and encryption according to each Means for performing encryption and plain culture using the above technique and encryption key. 6. The intelligent information processing apparatus according to claim 4, wherein only the reliability level is used as an information attribute, and the level from 0 to m is used (level 0,
(Including the method of using only 1), a means for dividing an arbitrary part of information on a display such as a CRT, a means for setting a confidence level attribute for each part of the information, and an error corresponding to each An intelligent information processing apparatus comprising: means for performing encoding and decoding using a correction code. 7. A procedure for encrypting a confidential part when a confidential file is stored in a disk or the like for management and the heading and the information part necessary for file management are plaintext. An intelligent information processing method comprising: a procedure for performing file management by directly operating or retrieving information necessary for file management such as a plaintext heading and keywords while including a sentence. 8. When storing a confidential file in a disk or the like for management, a headline and a part of information required for file management are kept in plain text, and a means for encrypting a confidential part, and an encryption method. An intelligent information processing apparatus comprising means for performing file management by directly operating or retrieving information necessary for file management such as headings of plain texts, keywords, etc., while including sentences. 9. A procedure for setting an attribute of a reliability level and / or a confidentiality level to an arbitrary data item, record (row information), or entire data item (column information) of a database system, and a corresponding procedure. And a procedure for performing encoding and / or encryption, decryption and / or plain culture using the error correction code and / or encryption technique and encryption key. Information processing method. 10. A means for setting an attribute of a reliability level and / or a confidentiality level of an arbitrary data item, record (row information), or entire data item (column information) of a database system, and a means for setting the attribute, respectively. 5. The method according to claim 4, further comprising means for performing encoding and / or encryption, decryption and / or plain culture using the error correction code and / or encryption technique and encryption key. Information processing device. 11. A procedure for identifying an item of a database as a single file and classifying an arbitrary part of information in the item, and a step of setting a reliability level and / or a confidentiality level attribute for each part. , Encoding and / or encrypting, decrypting and / or using error-correcting code and / or encryption techniques and encryption keys, respectively.
The intelligent information processing method according to claim 1, further comprising a procedure for performing a flat culture. 12. A means for identifying an item of a database as a single file and classifying an arbitrary part of information in the item, and a means for setting an attribute of a reliability level and / or a confidentiality level to each part. , Encoding and / or encrypting, decrypting and / or using error-correcting code and / or encryption techniques and encryption keys, respectively.
The intelligent information processing apparatus according to claim 4, further comprising means for performing a flat culture. 13. In information transmission and processing of documents, graphics, images, databases, etc., a level from 0 to n (including a method using only levels 0, 1) is used as a confidentiality level, and a CRT or the like is used. The level of sensitivity on any part of the information on the display, in particular any item in the database, any record, any whole data item or any part of the information in the item By setting attributes, and using encryption techniques and encryption keys corresponding to each, in the information processing that performs encryption and plain culture, set the access authority level corresponding to the sensitivity level, and set the password and encryption key. An intelligent information processing method comprising a step of limiting the access of the information part to a plurality of specified persons according to the level thereof by using the information part. 14. In information transmission and processing of documents, graphics, images, databases, etc., a level of 0 to n (including a method of using only levels 0, 1) is used as a confidentiality level, and a CRT or the like is used. The level of sensitivity on any part of the information on the display, in particular any item in the database, any record, any whole data item or any part of the information in the item By setting attributes, and using encryption techniques and encryption keys corresponding to each, in the information processing that performs encryption and plain culture, set the access authority level corresponding to the sensitivity level, and set the password and encryption key. An intelligent information processing apparatus comprising means for limiting the access of the information part to a plurality of specific persons according to the level of use. 15. A means for encrypting a confidential portion when the confidential information is transmitted by line-encrypting a file and data, the information portion required for file management and encryption processing is kept in plain text, and An intelligent information processing apparatus characterized by further including means for line encryption of a file and data containing ciphertext, and means for transmitting the same. 16. When transmitting a document by using a facsimile, a seal attachment area is provided in the transmission document, and a seal such as a bar code is far provided, and a line counting function is used to make the same for each line or dot. A means to separate ordinary text from confidential text on a page, normal text is transmitted normally, and sensitive text is switched to the encryption function to be encrypted and transmitted. In addition to storing the entire text including the text in a storage device and printing out only the normal text, a means for limiting the processing such as plain text of ciphertext and printing by using a password and encryption key to only a specific person The intelligent information processing apparatus according to claim 4, wherein 17. An encryption key to be used for each device or software to be used, a history list of the encryption key is created, and in some cases encrypted and saved. When the encryption key is forgotten or lost, the history list thereof is recorded. An intelligent information processing method characterized by including a procedure for searching, verifying, and searching for an encryption key used for a file or a part thereof by using.