JP2954172B1 - Data encryption / decryption device, recording medium recording data encryption / decryption program - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To apply encryption of a plurality of different patterns an unspecified number of times to perform more difficult encryption and decryption of data encrypted in this manner. Provided are a data encryption device, a data decryption device, a recording medium recording a data encryption program, and a recording medium recording a data decryption program. SOLUTION: In a data encryption device 100 that encrypts data output from an input unit 10 and outputs the data to a data output unit 20, an encryption processing unit 4 inputs the data output from the input unit 10, The input data is encrypted based on the n replacement data tables 33 for encryption, where n is an arbitrary integer equal to or greater than 1, thereby encrypting the input data and outputting the encrypted data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an encrypted data which is difficult to decrypt by encrypting one data a plurality of times when encrypting the data which needs to be encrypted. A data encryption device, a data decryption device, a recording medium on which a data encryption program is recorded, and a data decryption program, which can decrypt and use the data thus encrypted. Related to a recorded medium.

[0002]

2. Description of the Related Art Conventionally, various data processing systems have been proposed for efficiently processing a large amount of data.

However, when data is temporarily output from a system for processing data to a file on a recording medium such as a disk and the data is transferred to another processing system, the data is referred to. There is a risk.

Therefore, a technique for encrypting such data in a manner that is difficult to decrypt is indispensable in terms of security protection. The conventional means complicates the means for creating a table for encryption and the encryption method itself, and makes it difficult to decrypt by encrypting with a special method.

[0005]

However, a conventional encryption technique which makes the means for creating a table for encryption and the encryption method itself complicated and makes it difficult to decrypt by encrypting with a special method. However, there is a problem that the structure of the data processing system is complicated, and if the encryption method itself is determined, the decryption of the encryption becomes easy.

The present invention has been made in view of the above circumstances, and thus, by applying a plurality of different pattern conversions a plurality of indefinite times, it is possible to obtain more difficult encryption and data encrypted in this manner. It is an object of the present invention to provide a data encryption device, a data decryption device, a recording medium on which a data encryption program is recorded, and a recording medium on which a data decryption program is recorded.

[0007]

In order to achieve the above object, a data encryption apparatus according to the first aspect of the present invention encrypts data output from an input means and outputs the encrypted data to a data output means. An encryption random number data table generation processing means for generating an encryption random number data table based on an encryption random number data table generation key output from an input means; and an encryption output table output from the input means. From the first encryption deformation pattern table, n is an n-th arbitrary integer for deforming the encryption random number data table based on the encryption random number data table deformation key. An encryption modification pattern table composed of n encryption modification pattern tables up to the pattern table, and encryption output from the input means On the basis of the random number data table modification key, how many times are the transformations based on the respective encryption transformation pattern tables from the first encryption transformation pattern table to the n-th encryption transformation pattern table performed for encryption. A transformation number table for encryption composed of n transformation times from the first transformation number to the n-th transformation number, indicating whether the modification is performed on the random number data table;
By transforming the encryption random number data table based on the encryption random number data transformation method selection processing means for outputting the encryption random number data table, the encryption transformation pattern table, and the encryption transformation number table. Replacement data table generation processing means for generating an encryption replacement data table group composed of encryption replacement data tables, and an encryption replacement data table composed of n encryption replacement data tables Encryption processing means for encrypting input data by performing encryption based on the group and outputting the encrypted data.

According to a second aspect of the present invention, there is provided a data decoding apparatus for decoding data output from an input means and outputting the decoded data to a data output means. A decoding random number data table generation processing means for generating a decoding random number data table based on the random number data table generation key; and a decoding random number data based on a decoding random number data table transformation key output from the input means. To transform the data table,
When n is an arbitrary integer of 1 or more, a modified decoding pattern composed of n decoding modified pattern tables from the first modified decoding pattern table to the n-th modified decoding pattern table Tables and respective decoding deformation patterns from the first decoding deformation pattern table to the n-th decoding deformation pattern table based on the decoding random number data table deformation key output from the input means. The number of transformations from the first transformation number to the n-th transformation number indicates the number of times each of the transformations based on the table is performed on the decoding random number data table. Decoding random number data table deformation method selection processing means for outputting a deformation count table, a decoding deformation pattern table, and a decoding deformation time table By modifying the decoding random number data table based on the table, a decoding modified random number data table group composed of n decoding modified random number data tables is generated, and the decoding modified random number data table group is generated. Generating a replacement data table group for decoding composed of n replacement data tables for decoding, based on the Decoding processing means for decoding input data by performing decoding based on a replacement data table group for decoding constituted by a replacement data table.

According to a third aspect of the present invention, there is provided a recording medium on which a data encryption program is recorded, wherein the data encryption device is provided with an encryption unit for encrypting and outputting data output from an input unit. A storage medium storing an encryption program, the encryption random number data table generation processing procedure program for generating an encryption random number data table based on the encryption random number data table generation key output from the input means And a first encryption deformation pattern table, where n is an arbitrary integer of 1 or more for deforming the encryption random number data table based on the encryption random number data table deformation key output from the input means. To the n-th encryption deformation pattern table, the encryption Of deformable pattern table and,
Based on the encryption random number data transformation key output from the input means, the modification from the first encryption transformation pattern table to the n-th encryption transformation pattern table based on each of the encryption transformation pattern tables. To
Outputs an encryption transformation number table composed of n transformation times from the first transformation number to the n-th transformation number, which indicates how many times the encryption random number data table is to be performed. By modifying the encryption random number data table based on the program of the encryption random number data transformation method selection processing procedure, the encryption transformation pattern table, and the encryption transformation number table, n The input data is encrypted and output by performing encryption based on the program for the encryption replacement data table generation processing procedure for generating the encryption replacement data table and the n pieces of encryption replacement data tables. And a program of an encryption processing procedure to be performed is recorded.

According to a fourth aspect of the present invention, there is provided a recording medium on which a data decoding program is recorded, wherein the data decoding apparatus is provided with a decoding means for decoding data outputted from the input means and outputting the decoded data. A recording medium on which a decryption program is recorded, based on a decryption random number data table generation key output from the input means, and a program for a decryption random number data table generation processing procedure for generating a decryption random number data table; N for modifying the decoding random number data table based on the decoding random number data table transformation key output from the input means.
Is an arbitrary integer of 1 or more, a modified decoding pattern table composed of n decoding modified pattern tables from the first modified decoding pattern table to the nth modified decoding pattern table And, based on the decoding random number data transformation key output from the input means, from the first decoding transformation pattern table,
From the first number of transformations, the number of transformations based on each of the transformation pattern tables for decoding up to the n-th transformation pattern table for decoding is represented by the number of transformations. n up to the number of deformations of n
Decoding transformation number table composed of the number of transformation times, a decoding random number data table that outputs a transformation method selection processing procedure program, a decoding transformation pattern table, and a decoding transformation number table By deforming the random number data table for decoding, a modified random number data table for decoding composed of n number of modified random number data tables for decoding is generated, and based on the modified random number data table group for decoding, N to perform the decryption
The input data is decoded by performing the decoding based on the program of the decoding replacement data table generation processing procedure for generating the decoding replacement data tables and n decoding replacement data tables. And a decoding processing procedure program to be converted and output.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a data encryption device, a data decryption device, a recording medium recording a data encryption program, and a recording medium recording a data decryption program according to the present invention. This will be described with reference to FIG.

FIG. 1 is a block diagram showing the configuration of an embodiment of a data encryption device according to the present invention.

Referring to FIG. 1, a data encryption apparatus 100 according to the present invention includes an encryption random number data table generation key 11, an encryption random number data table transformation key 12, and an input source of an encryption target data 13. Input unit 10,
An encryption random number data table generation processing unit 1 for generating an encryption random number data table 30, and an encryption random number data table modification method selection for generating an encryption modification pattern table 31 and an encryption modification number table 32 A processing unit 2; an encryption replacement data table generation processing unit 3 for generating an encryption replacement data table group 33; an encryption processing unit 4 for encrypting the data 13 to be encrypted; A data output unit 20 to which the data 14 is output.

Next, FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, FIG. 6, and FIG. 7 will be used to explain one embodiment of the data encryption device according to the present invention shown in FIG. The operation of encryption will be described.

FIG. 2 shows a configuration image of the encryption random number data table 30 in FIG. 1, and FIG.
FIG. 4 shows an example of a deformation pattern that is a component of the encryption deformation pattern table 31 shown in FIG. 1, and FIG. 5 shows an example of a deformation pattern shown in FIG. FIG. 6 shows a conceptual image of the processing of the encryption replacement data table generation processing unit 3 in FIG. 1, and FIG. 7 shows an operation conceptual diagram of the encryption transformation number table 32. FIG. 3 is a conceptual diagram of the operation at the time of the processing operation of the encryption processing unit 4 of FIG. However, the tables shown in FIG. 2, FIG. 3, FIG. 4, and FIG. 5 also serve as an example of a table used in a data decoding device according to the present invention described later.

In FIG. 1, an encryption random number data table generation key 11 inputted from an input unit 10 is supplied to an encryption random number data table generation processing unit 1 and
Random number data table transformation key 1 input from
2 is an encryption random number data transformation method selection processing unit 2
The encryption target data 13 supplied from the input unit 10 is supplied to the encryption processing unit 4.

The encryption random number data table generation processing section 1 shown in FIG. 1 analyzes the encryption random number data table generation key 11 and performs the random number generation processing in the same table as shown in the example of FIG. A 16 × 16 two-dimensional encryption random number data table 30 having random number data having no value is generated.

Next, in the encryption random number data table transformation method selection processing section 2 shown in FIG.
Random number data table transformation key 1 output from
2 is analyzed, and an encryption deformation pattern table 31 having an array structure as in the example of FIG. 3 is generated using data indicating a deformation pattern as in the example of FIG. 4 as constituent elements. However, the patterns shown in FIG. 3 need not be the same, and the number thereof is not limited to ten as shown in FIG. 3, but may be any number.

Next, in the encryption random number data table modification method selection processing unit 2, the encryption modification pattern table 3
The same number of random number data tables 3 for encryption as the number of components 1
Using the number of transformations for 0 as a component, an encryption transformation number table 32 having an array structure as shown in the example of FIG. 5 is generated.

Next, referring to FIG. 6, the encryption transformation pattern table 31 and the encryption transformation number table 32 each have ten components, and The operation of the replacement data table generation processing unit 3 will be described.

As shown in FIG. 6, the encryption replacement data table generation processing unit 3 shown in FIG.
For the random number data table for encryption 30, the first deformation pattern in the deformation pattern table for encryption 31 is changed by the number of times stored in the first deformation number in the deformation number table for encryption 32, and A first replacement data table for encryption is generated.

The above processing is repeated from generation of the first encryption replacement data table to generation of the tenth encryption replacement data table, as shown in FIG.
The encryption replacement data table group 33 having the encryption replacement data tables as elements is generated.

Next, referring to FIG. 7, an example in which the encryption replacement data table group 33 is composed of ten encryption replacement data tables will be described with reference to FIG. 4 will be described.

As shown in FIG. 7, the encryption processing unit 4 firstly converts the data in the encryption target data 13 into the first data generated by the above-described encryption replacement data table generation processing unit 3. Conversion is performed by the following method using the replacement data table for encryption. In the conversion using the first replacement data table for encryption, first, the encryption target data 1
1 byte data is taken out from the head of 3.

The extracted 1-byte data is regarded as a value indicating an arbitrary position in the first replacement data table for encryption, and the 1-byte data at that position is the 1-byte data in the data 13 to be encrypted. Replace the data at the position from which the data was extracted.

Such a replacement is performed by using the
This process is also performed for all data after the byte and generates the encryption target data 13 converted by the first replacement data table for encryption.

Next, the same processing as the conversion using the first encryption replacement data table is performed by the second encryption replacement data table using the encryption target converted by the first encryption replacement data. Performed on data 13,
The encryption target data 13 converted by the second replacement data table for encryption is generated.

The above conversion process is performed on all ten replacement data tables for encryption in the replacement data table group for encryption 33 as shown in FIG.
3 is encrypted to generate encrypted data 14, and the encrypted data 14 resulting from the encryption is output to the data output unit 20.

Therefore, according to the embodiment of the data encryption apparatus according to the present invention shown in FIG. 1, the encryption replacement data table group 33 composed of a plurality of encryption random number data tables is used for encryption. Since the encrypted data 14 is generated by performing the encryption process, it is possible to generate encrypted data whose decryption is difficult.

Next, an embodiment of the data decoding apparatus according to the present invention will be described with reference to FIG.

Referring to FIG. 8, a data decoding apparatus 200 according to the present invention comprises a decoding random number data table generation key 211, a decoding random number data table modification key 21
2, an input unit 210 serving as an input source of the decoding target data 213, a decoding random number data table generation processing unit 201 for generating a decoding random number data table 230, a decoding deformation pattern table 231 and decoding Random number data table modification method selection processing unit 202 for generating a transformation number table 232 for use, a modified random number data table group 233 for decoding, and a replacement data table group 2 for decryption
34, a decoding processing unit 204 for decoding the decoding target data 213, and a decoded data 21 of the decoding result.
4 as a data output unit 220 serving as an output source.

Here, the decryption random number data table generation key 211 has a decryption random number data table 2 having the same contents as the encryption random number data table 30 shown in FIG.
30 is a key that can be generated. Also, the decryption random number data table modification key 212 includes a decryption modification pattern table 231 having the same contents as the encryption modification pattern table 31 shown in FIG. 1, and an encryption modification number table shown in FIG. 32 and a key capable of generating the same number of times as the decoding transformation number table 232 having the same contents.

Next, the operation of the data decoding apparatus according to one embodiment of the present invention will be described with reference to FIGS. 2, 3, 4, 5, 8, 9, and 10.

FIG. 2 shows a configuration image of the decoding random number data table 230 in FIG. 8, and FIG. 3 shows a configuration image of the decoding deformation pattern table 231 in FIG. 8 shows an example of a deformation pattern that is a component of the decoding deformation pattern table 231 in FIG. 8, and FIG. 5 shows the decoding deformation number table 232 in FIG.
FIG. 9 shows an operation conceptual diagram of the processing operation of the replacement data table for decoding generation processing unit 203 in FIG. 8, and FIG. 10 shows the decoding processing unit 204 in FIG.
FIG. 3 is an operation conceptual diagram at the time of the processing operation of FIG.

In FIG. 8, a decoding random number data table generation key 211 input from an input unit 210 is supplied to a decoding random number data table generation processing unit 201.
The decoding random number data table modification key 212 input from the input unit 210 is supplied to the decoding random number data table modification method selection processing unit 202, and the decoding target data 213 input from the input unit 210 is subjected to a decoding process. Part 204
Supplied to

The decoding random number data table generation processing unit 201 shown in FIG. 8 analyzes the decoding random number data table generation key 211 and performs the random number generation processing in the same table as shown in the example of FIG. A 16 × 16 two-dimensional decoding random number data table 230 having random number data having no value is generated.

Next, the decoding random number data table modification method selection processing unit 202 shown in FIG. 8 first analyzes the decoding random number data table modification key 212 to show a modification pattern as shown in FIG. A modified pattern table for decoding 231 having an array structure as shown in the example of FIG. 3 using data as a component is generated.

Next, the decoding random number data table transformation method selection processing unit 202 uses the number of transformations for the decoding random number data table 230 equal to the number of components of the decoding transformation pattern table 231 as a component. 5, a decoding deformation number table 232 having an array structure as shown in the example of FIG. 5 is generated.

Next, referring to FIG. 9, a decoding deformation pattern table 231 and a decoding deformation number table 232 will be described.
The operation of the decoding replacement data table generation processing unit 203 shown in FIG. 8 will be described using an example in which each has 10 components.

As shown in FIG. 9, the decoding replacement data table generation processing unit 203 shown in FIG. 8 first compares the decoding random pattern data table 230 with the decoding modified pattern table 231. The first modified pattern is subjected to the number of times stored in the first modified number of times in the transformation number table for decoding 232 to generate the first modified random number data table for decoding.

The above processing is repeated from generation of the first modified random number data table for decoding to generation of the tenth modified random number data table for decryption, as shown in FIG. A modified random data table for decoding 233 having a random data table as an element is generated.

Further, from each of the ten constituent elements of this modified random number data table for decryption 233, a replacement data for decryption having, as elements, ten replacement data tables for decryption for performing inverse conversion of encryption. A table group 234 is generated.

Next, as shown in FIG. 10, using the case where the decoding replacement data table group 234 has ten decoding replacement data tables, the decoding processing unit 204 shown in FIG. The operation will be described.

As shown in FIG. 10, the decoding processing unit 2
In step 04, first, the data in the decoding target data 213 is converted by the following method using the tenth replacement data table for decoding. In the conversion by the tenth replacement data table for decryption, the data to be decrypted 2
Thirteen bytes of data are extracted from 13. The extracted 1-byte data is regarded as a value indicating an arbitrary position in the replacement data table for decoding, and the 1-byte data at that position is the position at which 1-byte data in the decoding target data 213 is extracted. Replace the data in

Such replacement is performed on all the data of the decoding target data 213, and the decoding target data 213 converted by the tenth decoding replacement data table is used.
Generate Next, the ninth decoding replacement data table performs the same processing as the conversion by the tenth decoding replacement data table on the decoding target data 213 converted by the tenth decoding replacement data table. To generate the decoding target data 213 converted by the ninth decoding replacement data table.

The above conversion process is performed as shown in FIG. 10 to configure the replacement data table group 234 for decoding.
The decoding target data 213 is decoded by performing all zero replacement data tables for decoding, and the decoded data 214 is decoded.
And outputs the decoded data 214 as a result of the decoding to the data output unit 220.

Therefore, according to the embodiment of the data decrypting apparatus of the present invention shown in FIG. 8, the encrypted data is obtained by performing the conversion process a plurality of times by using the plurality of encryption random number data tables. So it can be decrypted,
It is possible to efficiently use encrypted data that is difficult to decipher.

Here, the data encryption device and the data decryption device according to the present invention have been described as being separate devices. However, in implementing the present invention, it is necessary to separately configure such devices. Instead, a device in which the data encryption device and the data decryption device according to the present invention are integrally configured may be configured.

Next, an embodiment of a recording medium on which a data encryption program according to the present invention is recorded will be described with reference to FIG.

As shown in FIG. 11, one embodiment of a recording medium on which a data encryption program according to the present invention is recorded is a recording medium 310 on which a data encryption program 300 is recorded.

The recording medium 310 is not limited to a magnetic disk such as a hard disk, but may be a recording medium capable of storing a program such as an optical disk, a magneto-optical disk, a memory, and a magnetic tape.

Further, the data encryption program 300
The operation of the encryption device 100 shown in FIG. 1 is programmed. That is, in the recording medium 310, the encryption random number data table generation processing unit 1, the encryption random number data table transformation method selection processing unit 2, the encryption replacement data table generation processing unit 3, Further, a program for the operation of the encryption processing unit 4 is recorded.

Therefore, the data processing device 311 reads the data encryption program 300 on the recording medium 310 and performs the same data encryption process as the above-described encryption process in the data encryption device shown in FIG. .

Therefore, in the embodiment of the recording medium shown in FIG. 11 on which the data encryption program according to the present invention is recorded, the same effect as that of the data encryption device shown in FIG. 1 can be performed. At the same time, since it is realized on a recording medium, the cost can be reduced.

Next, an embodiment of a recording medium on which a data decoding program according to the present invention is recorded will be described with reference to FIG.

Referring to FIG. 12, one embodiment of a recording medium on which a data decoding program according to the present invention is recorded is:
Recording medium 41 recording data decryption program 400
0.

The recording medium 410 is not limited to a magnetic disk such as a hard disk, but may be a recording medium capable of storing a program such as an optical disk, a magneto-optical disk, a memory, and a magnetic tape.

Also, the data decryption program 400
The operation of the data decoding device 200 shown in FIG. 8 is programmed. That is, in the recording medium 410,
As described above, the decoding random number data table generation processing unit 201, the decoding random number data table modification method selection processing unit 202, the decoding replacement data table generation processing unit 203, and the decoding processing unit 204 shown in FIG. Operation program is recorded.

Therefore, the data processing device 411 reads the data decryption program 400 on the recording medium 410, and performs the same data decryption processing as the decryption operation of the data decryption device shown in FIG. Do.

Therefore, in the embodiment of the recording medium in which the data decoding program according to the present invention shown in FIG. 12 is recorded, the same effect as that of the data decoding device shown in FIG. 8 can be performed. At the same time, since it is realized on a recording medium, the cost can be reduced.

Here, the recording medium on which the data encryption program according to the present invention is recorded and the recording medium on which the data decryption program is recorded are described as separate recording media. As described above, the present invention is not limited to the example in which each program is recorded on a separate recording medium. Even if the data encryption program and the data decryption program according to the present invention are recorded on one recording medium, good.

[0062]

As is apparent from the above description, according to the present invention, since encryption is performed unspecified plural times by using a random table, it is difficult to analyze encrypted data. Alternatively, it is possible to provide a data encryption device, a data decryption device, a recording medium recording a data encryption program, and a recording medium recording a data decryption program that can be used.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a data encryption device according to the present invention.

FIG. 2 is a random number data table for encryption shown in FIG. 1;
FIG. 9 is a conceptual diagram showing an example of a decoding random number data table shown in FIG. 8 and FIG.

3 is a conceptual diagram showing an example of a modification pattern table for encryption shown in FIG. 1 and a modification pattern table for decryption shown in FIG. 8;

FIG. 4 is a conceptual diagram showing an example of a deformation pattern shown in FIG.

FIG. 5 is a conceptual diagram showing an example of an encryption transformation number table shown in FIG. 1 and an example of a decryption transformation number table shown in FIG. 8;

FIG. 6 is an operation conceptual diagram showing an example of an operation of an encryption replacement data table generation processing unit shown in FIG. 1;

FIG. 7 is an operation conceptual diagram showing an example of an operation of the encryption processing unit shown in FIG. 1;

FIG. 8 is a block diagram showing a configuration of an embodiment of a data decoding device according to the present invention.

9 is an operation conceptual diagram showing an example of an operation of the decoding replacement data table generation processing unit shown in FIG. 8;

10 is an operation conceptual diagram showing an example of the operation of the decoding processing unit shown in FIG.

FIG. 11 is a schematic diagram showing a configuration of an embodiment of a recording medium on which a data encryption program according to the present invention is recorded.

FIG. 12 is a schematic diagram showing a configuration of an embodiment of a recording medium on which a data decoding program according to the present invention is recorded.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 random number data table generation processing unit for encryption 2 random number data table transformation method selection processing unit for encryption 3 replacement data table generation processing unit for encryption 4 encryption processing unit 10 input unit 11 random number data generation key for encryption 12 Encryption random number data table transformation key 13 Data to be encrypted 14 Encrypted data 20 Data output unit 30 Encryption random number data table 31 Encryption transformation pattern table 32 Encryption transformation number table 33 Encryption replacement data table group REFERENCE SIGNS LIST 100 data encryption device 200 data decryption device 201 decryption random data table generation processing unit 202 decryption random data table transformation method selection processing unit 203 decryption replacement data table generation processing unit 204 decryption processing unit 210 input unit 211 Raw random data table for decryption Modified key 212 Decoding random number data table deformation key 213 Decoding target data 214 Decoding data 220 Data output unit 230 Decoding random number data table 231 Decoding deformation pattern table 232 Decoding deformation times table 233 Decoding deformation Random number data table group 234 Decoding replacement data table group 300 Data encryption program 310 Recording medium 311 Data processing device 400 Data decryption program 410 Recording medium 411 Data processing device

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) G09C 1/00-5/00 H04K 1/00-3/00 H04L 9/00-9/38 JICST file ( JOIS)

Claims (4)

(57) [Claims] 1. A data encryption device for encrypting data output from an input means (10) and outputting the encrypted data to a data output means (20), comprising: an encryption random number data output from the input means (10); Based on the table generation key (11), an encryption random number data table generation processing means (1) for generating an encryption random number data table (30), and the encryption random number data output from the input means (10) Based on the table transformation key (12), the n-th encryption pattern is transformed from the first encryption transformation pattern table, where n is an arbitrary integer of 1 or more, to transform the encryption random number data table (30). An encryption modification pattern table (31) composed of n encryption modification pattern tables up to the encryption modification pattern table, and the encryption random number data table modification key (12 ) Based Then, how many times the transformation based on the transformation pattern tables for encryption from the first transformation pattern table for encryption to the nth transformation pattern table for encryption is performed, (30), which outputs an encryption transformation number table (32) composed of n transformation times from the first transformation number to the n-th transformation number. Random number data table transformation method selection processing means
(2), the encryption transformation pattern table (31), and the encryption random number data table (30) based on the encryption transformation number table (32), whereby n An encryption replacement data table generation processing means (3) for generating an encryption replacement data table group (33) configured by an encryption replacement data table; and the n number of encryption replacement data tables. Encryption processing means (4) for encrypting the input data and outputting the encrypted data by performing encryption based on the encrypted replacement data table group (33). Encryption device. 2. A data decoding device for decoding data output from an input means (210) and outputting the decoded data to a data output means (220), comprising: decoding random number data output from the input means (210); A decoding random number data table generation processing means (201) for generating a decoding random number data table (230) based on the table generation key (211); and a decoding random number data output from the input means (210). Based on the table transformation key (212), the first decoding transformation pattern table is used to transform the decoding random number data table (230) from the first decoding transformation pattern table, where n is an arbitrary integer of 1 or more. A decoding deformation pattern table (231) composed of n decoding deformation pattern tables up to the decoding deformation pattern table; and the decoding random number data table output from the input means (210). Based on the transformation key (212), the transformation based on the transformation pattern tables for decoding from the first transformation pattern table to the n-th transformation pattern table is performed several times. The decoding random number data table (230), which indicates whether or not to perform the decoding on the random number data table (230), is composed of n deformation times from the first deformation times to the nth deformation times.
32), the decoding random number data transformation method selection processing means (202) for outputting the decoding transformation pattern table (231), and the decoding transformation frequency table (232). By transforming the decoding random number data table (230), a decoding modified random number data table group (233) composed of n decoding random number data tables is generated. Based on tables (233)
Decoding replacement data table group (234) composed of n decoding replacement data tables for performing decoding
For generating a replacement data table for decryption
(203), and decoding the input data by performing decoding based on the decoding replacement data table group (234) composed of the n decoding replacement data tables. A data decoding device comprising: decoding processing means (204). 3. A recording medium recording a data encryption program used in a data processing device having an encryption unit for encrypting and outputting data output from an input unit, wherein the data is output from the input unit. A program for generating a random number data table for encryption for generating a random number data table for encryption based on the generated random number data table for encryption, and a random number data table for encryption output from the input means. Based on the transformation key, n is an arbitrary integer of 1 or more for transforming the encryption random number data table. From the first encryption transformation pattern table to the n-th encryption transformation pattern table, a modification pattern table for encryption composed of n transformation pattern tables for encryption; On the basis of the outputted random number data table modification key for encryption, transformations based on the respective transformation pattern tables for encryption from the first transformation pattern table for encryption to the n-th transformation pattern table for encryption. Is performed on the random number data table for encryption, and represents the number of times of transformation from the first transformation number to the n-th transformation number. , The encryption random number data table modification method selection processing procedure, a program for the encryption modification pattern table, and the encryption modification number table, and the encryption random number data table is modified. A program for generating a replacement data table for encryption, which generates n replacement data tables for encryption, And a program of an encryption processing procedure for encrypting the input data and outputting the encrypted data by performing encryption based on the n replacement data tables for encryption. A recording medium on which an encryption program is recorded. 4. A recording medium recording a data decoding program used in a data processing device having a decoding means for decoding and outputting data output from an input means, wherein the data is output from the input means. A program for a decoding random number data table generation process for generating a decoding random number data table based on the decoded decoding random number data table generation key; and a decoding random number data table transformation key output from the input means. Based on the above, n is an arbitrary integer of 1 or more, from the first decoding deformation pattern table to the n-th decoding deformation pattern table, where n is an arbitrary integer of 1 or more. A decoding deformation pattern table composed of a decoding deformation pattern table, and an output from the input means. Based on the modified random number data table modification key, the modification from the first modification pattern table to the n-th modification pattern table is performed based on the modification pattern table for decoding. , A number of times of decoding for the decoding random number data table, which represents the number of times each of which is to be performed on the random number data table for decoding, from the first number of times of deformation to the nth number of times of deformation, By transforming the random number data table for decoding based on a program of a decoding random number data table modification method selecting process procedure for outputting the same, the decoding deformation pattern table, and the decoding transformation number table, Generating a group of modified decoding random number data tables each including the n number of modified decoding random number data tables; A program for the decoding replacement data table generation processing procedure for generating n decoding replacement data tables for performing decoding based on the modified random number data table group, and the n decoding replacement tables. A program for a decoding processing procedure for decoding and outputting the input data by performing decoding based on a data table; and a recording medium storing a data decoding program characterized by: .