TW201411393A - Encrypting system and method thereof - Google Patents

Abstract

An encrypting system and a method thereof are provided. Said system and said method pre-establish a random number interval, fetch offsets randomly to establish the converting relationship of alphabet and symbol characters, and then convert at least one original string in an original document into at least one encrypted string according to a character converting table. By completing above procedure, said system and said method can therefore transform the text content to enhance the secrecy of documents.

Description

Random number offset encryption system and method thereof

An encryption system and method for random number offset, in particular, an encryption system and a method for generating a random number offset of a character conversion relationship according to a random number offset manner.

With the increasingly diversified functions of file editing programs developed by various software vendors, today's file editing programs can support typographic changes, revision records, and language conversion of various electronic file colors. ... and other operations can be said to greatly facilitate the user's file editing and access. Therefore, the way in which a large amount of physical paper or books were used to record files has been gradually replaced by electronic files.

In daily life, private electronic files are usually stored in places that they are used to see, such as personal folders or hidden folders, but when they are placed for a long time, users may not open often, sometimes even In which folder the location of the forgotten file is placed, it is quite inconvenient for the preservation and management of the private electronic file.

In fact, important private electronic files can also be placed in a conspicuous position. If you don't want to be easily seen by other users, you only need to change the contents of the file so that others can't easily read the contents of the file. In view of the confidentiality effect of the document, it is necessary to propose an improved technical means to change the content of the document so that the private electronic file placed in a conspicuous position still has the confidentiality effect of the document content.

In view of the problems in the prior art, the present invention discloses a random number offset encryption system and a method thereof, wherein: the random number offset encryption system disclosed in the present invention is applicable to a pair containing only English characters and symbol words. The encrypted file to be chaotic offset is encrypted by a random number offset, wherein each English character and each symbol character built in the operating system respectively correspond to a unique and non-repeating character encoding, the system The method comprises: a calculation module, which is pre-set with a random number interval for reading English characters and symbol characters one by one according to the order of character encoding, wherein each time an English character or a symbol character is read, the calculation The module extracts a value from the random number interval as an offset, and encodes the English character or the symbol character according to the offset offset character to obtain a unique and non-repeating corresponding conversion character, and The text element or the conversion character corresponding to the symbol character is recorded in the character conversion table; the parsing module is configured to read at least one original string in the encrypted file to be chaotically offset; and the conversion module, Used according to words The conversion table converts each original character string of the at least one original character for the conversion to form an encrypted string corresponding to the at least one random number offsets.

The encryption method for the random number offset disclosed in the present invention is suitable for encrypting an encrypted file of an odd-numbered offset containing only English characters and symbol characters, wherein each operating system has built-in An English character and each symbol character respectively correspond to a unique and non-repeating one-character encoding, and the method comprises the following steps: presetting a random number interval; reading the English word one by one according to the sequence of character encoding a meta- and symbolic character, wherein each time an English character or a symbol character is read, the following steps are performed: a value is taken as an offset from the random number value interval; and the English character or symbol character is offset according to the offset The quantity offset character is encoded to obtain a unique and non-repeating corresponding conversion character; and the conversion character corresponding to the English character or the symbol character is recorded in the character conversion Converting a table; reading at least one original string in the encrypted file to be chaotic offset; and converting each original character in the at least one original string into a corresponding converted character according to the character conversion table to form At least one random number of encrypted strings.

The system and method disclosed in the present invention are as above, and the difference from the prior art is that the present invention has the function of setting a random number interval in advance and randomly taking the offset to establish the conversion of English characters and symbol characters built into the operating system. The relationship, according to the character correspondence in the character conversion table, converts at least one original string in the encrypted file to be chaotically offset into a technical method of at least one random offset encrypted string.

Through the above technical means, the present invention can achieve the technical effect of improving the confidentiality of the file content through the display of the change of the file content.

The embodiments of the present invention will be described in detail below with reference to the drawings and embodiments, so that the application of the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.

First, please refer to "FIG. 1", which is a block diagram of the encryption system of the random number offset of the present invention, which will be used to explain the operation between the modules of the present invention. The random number offset encryption system of the present invention is suitable for encrypting an encrypted file to be randomly offset containing only English characters and symbol characters, wherein each English character and each Symbol characters correspond to unique and non-repeating character encodings, respectively.

English characters refer to the uppercase and lowercase letters of 26 English letters with a total of 52 English letters. Symbol characters, such as punctuation, Greek symbols, mathematical symbols, newline characters or other non-text characters. Whether it is an English character or a symbol character, it is preset to correspond to a character encoding when it is built in the operating system. This character encoding corresponds to the order in which the English characters and symbol characters are arranged.

For example, when the character encoding of the English character "A" is "0001x", the character encoding of the English character "B" is encoded as "0002x", and so on. However, the character encoding format and numerical values exemplified herein are only used to describe the relationship between the character encoding and the English character, and are not intended to limit the character encoding format used in the present invention, so the character encoding format actually used is Not limited to the examples given here.

The encrypted file to be chaotic offset according to the present invention may include text and embedded multimedia links, but the encryption system of the random number offset according to the present invention can only be used in the encrypted file to be offset. English character and symbol characters are encrypted by random number offset. The encrypted file to be chaotic offset according to the present invention may also be a plain text file containing only English characters and symbol characters converted by a special encoding method, and then transmitted through the random number offset encryption system of the present invention. The encrypted file to be chaotic offset generated by the special coding mode is further encrypted by random number offset. The present invention does not limit the content of the encrypted file to be chaotic offset, but the random number offset encryption system of the present invention performs random number shifting on portions of pure English characters and symbol characters. Encryption operation.

The encryption system of the random number offset according to the present invention includes an analysis module 101, a calculation module 102, and a conversion module 103.

The parsing module 101 is configured to read at least one original string in the encrypted file to be chaotically offset. Before the parsing module 101 reads the original string in the encrypted file to be chaotically offset, the parsing function may first record the corresponding position of the symbol character in the encrypted file to be chaotically offset, and then disassemble at least one original word. The string may also directly disassemble at least one original string without recording the corresponding position of the symbol character. Anyone having ordinary knowledge in the technical field of the present invention may analyze the to-be-displaced offset through one of the foregoing two methods. The string in the encrypted file. When the parsing module 101 uses the symbol character first recorded When the position is corresponding, the parsing module 101 will record the symbol character and the corresponding position in a decryption auxiliary file, and in the process of disassembling the string by the parsing module 101, the number of each string will also be It is recorded in the decryption auxiliary file in order.

For example, suppose that the content of an encrypted file to be chaotic offset is "I will come back later.", the total number of characters is 23 (including English characters and symbol characters) and a final character, parsing If the module 101 takes the manner of recording the corresponding position of the symbol character, the corresponding position of the symbol character will be recorded first, for example, the period is located at the last character of the encrypted file to be offset by random number, and the disorder is recorded in order. The number of characters in the encrypted string of the number offset is 1, 4, 4, 4, 5. It should be noted that the form of the record is not limited herein. Anyone having ordinary knowledge in the field to which the present invention pertains may use different data structures or mechanisms to set a corresponding record form according to system requirements.

The calculus module 102 is responsible for establishing a character conversion table, so that the conversion module 103 can convert at least one original string in the encrypted file to be chaotically offset into at least one random offset encryption according to the character conversion table. String. The calculus module 102 pre-sets a random number interval. When the calculus module 102 establishes the character conversion table, firstly, the English characters and symbol characters built in the operating system are read one by one according to the order of the character encoding, and each reading is performed. When an English character or a symbol character is taken, the calculus module takes a value from the random number range as an offset, and then reads the English character or the symbol character according to the offset. The character is encoded to obtain a unique and non-repeating conversion character, and the read English character or the conversion character corresponding to the symbol character is recorded in the character conversion table.

For example, suppose that the random number interval preset by the calculation module 102 is three integer values of [0, 1, 2], and when the English letter "A" is read (assuming the character code is "0001x"), The calculus module 102 takes the integer "2" as the offset, then at this time The English letter "C" with the character encoding "0003x" will be set to the conversion character of the English letter "A", and the corresponding relationship of "A" corresponding to the conversion to "C" will be recorded in the character conversion table. in.

It should be noted that when the small character of the English character corresponds to the conversion character, the calculus module 102 also sets the uppercase element of the English character to correspond to the same conversion character, for example: “d” corresponds to At "j", the calculus module 102 also sets "D" to correspond to "J". In addition, when setting the corresponding conversion character of the English character, it can be cyclically set according to the order of 26 English letters. For example, when the set read character is "Z" and the offset is 2, the conversion character is set. The calculation can be started from "a", so the conversion character corresponding to "z" is "b".

In addition, when the calculus module 102 sets the correspondence between the read character and the converted character, if the read character is found to have the corresponding converted character in the process of setting one by one, the calculus module 102 It will jump to the next character coded character to set the conversion character. For example, if the English character "A" has already set the corresponding conversion character relationship "C", if other English characters are taken off When the shift amount also corresponds to "C", the calculus module 102 will jump to the next character "D" of "C", and set "D" as the conversion character, and all the character conversion relationships are One-to-one, when encountering a character that has been set to correspond to the next character offset, and so on. After all the character conversion relationships are established, they will be recorded in the character conversion table.

The conversion module 103 is responsible for converting at least one original string into at least one random number encrypted string according to the character conversion table generated by the calculation module 102. Assuming that the correspondences recorded in the character conversion table are f→s, i→l, r→e, t→p, s→y, the original string “still” will be converted into an encrypted string of random offsets. "xplqq".

The conversion module 103 converts the original string into an encrypted string of random offsets. In addition, if the parsing module 101 records the symbol characters in the encrypted file to be chaotic offset and their corresponding positions in the decryption auxiliary file before disassembling the string, and sequentially sorts the number of characters of each original string. When recorded, the conversion module 103 is further configured to rearrange the number of characters of the original string, and recombine all the characters of the encrypted string with the odd-numbered offset into at least one recombination string. For example, suppose that the encrypted file to be chaotic offset has an original string "stand here and hold" whose number of characters is 5, 4, 3, 4, and the original string of the segment is converted. If the number of characters of the original string is 4, 4, 3, 5, the encrypted string of the random offset can be rearranged into a recombined string. "xpfs imjw jfs imtqi". Then, the conversion module 103 can further merge the recombination string and the decryption auxiliary file into a random offset encrypted file.

Next, the flow of the implementation of the present invention will be described with reference to an embodiment of the encryption method of the random number offset according to the present invention by "second diagram".

First, a random number interval is set in advance in the encryption system of random number offset (step 201), and English characters and symbol characters built in the operating system are read one by one according to the order of character encoding (step 202). And judging whether all English characters and symbol characters built in the operating system have been read (step 203), when not yet read, the random number offset encryption system will randomly retrieve from the random number range A value is used as an offset (step 204), and then the read English character or the symbol character is encoded according to the offset offset character to obtain a unique and non-repeating corresponding conversion character (step 205), Finally, the read English character or the conversion character corresponding to the symbol character is recorded in the character conversion table (step 206).

For example, if the random number value interval is an integer between 1 and 5, when the random number offset encryption system reads the English character "A" and the random number extracted is the integer "4", then The character code "0001x" of the English character "A" is offset by offset 4 The character is encoded as "0005x", so the English character "A" will correspond to the conversion character "E", and then the conversion relationship of the English character "A" to the conversion character "E" will be recorded in the character. In the conversion table.

It should be noted that when the small character of the English character corresponds to the conversion character, the encryption system of the random number offset also sets the uppercase element of the English character to correspond to the same conversion character, for example: “d When corresponding to "j", the calculus module 102 also sets "D" to correspond to "J". In addition, when setting the corresponding conversion character of the English character, it can be cyclically set according to the order of 26 English letters. For example, when the set read character is "z" and the offset is 2, the conversion character can be set. The calculation starts from "a", so the conversion character of "z" is "b".

In addition, when the calculus module 102 sets the correspondence between the read character and the converted character, if the read character is found to have the corresponding converted character in the process of setting one by one, the calculus module 102 It will jump to the next character coded character to set the conversion character. For example, if the English character "A" has already set the corresponding conversion character relationship "C", if other English characters are taken off When the shift amount also corresponds to "C", the calculus module 102 will jump to the next character "D" of "C", and set "D" as the conversion character, and all the character conversion relationships are One-to-one, when encountering a character that has been set to correspond to the next character offset, and so on. After all the character conversion relationships are established, they will be recorded in the character conversion table.

Then, the random number offset encryption system will read at least one original string in the encrypted file to be chaotically offset (step 207), and finally at least one original word in the original string according to the character conversion table. The meta is converted to a corresponding each of the converted characters to form an encrypted string of at least one random offset (step 208).

It should be noted that, before reading the original string in the encrypted file to be offset, the corresponding position of the symbol character in the encrypted file to be chaotic offset may be recorded first. After the at least one original string is disassembled, at least one original string can be directly disassembled without recording the corresponding position of the symbol character. Anyone having ordinary knowledge in the technical field of the present invention can transmit the foregoing two methods. One of them analyzes the string in the encrypted file to be chaotically offset. When the method of recording the corresponding position of the symbol character is used, the encryption system of the random number offset will record the symbol character and the corresponding position in a decryption auxiliary file, and each of the processes of disassembling the string is performed. The number of strings is also recorded in the decryption auxiliary file in order.

For example, suppose that the content of an encrypted file to be chaotic offset is "I will come back later.", the total number of characters is 23 (including English characters and symbol characters) and a final character, parsing If the module 101 takes the manner of recording the corresponding position of the symbol character, the corresponding position of the symbol character will be recorded first, for example, the period is located at the last character of the encrypted file to be offset by random number, and the disorder is recorded in order. The number of characters in the encrypted string of the number offset is 1, 4, 4, 4, 5. It should be noted that the form of the record is not limited herein. Anyone having ordinary knowledge in the field to which the present invention pertains may use different data structures or mechanisms to set a corresponding record form according to system requirements.

In summary, it can be seen that the difference between the present invention and the prior art is that the conversion relationship between the English character and the symbol character built in the operating system is established by randomly setting a random number interval, and then according to The character correspondence in the character conversion table is a technical means for converting at least one original string in the encrypted file to be at least one random number of encrypted strings, by means of a technical means The change in the content of the document shows the technical effect of improving the confidentiality of the content of the document.

While the embodiments of the present invention have been described above, the above description is not intended to limit the scope of the invention. Any changes in the form and details of the embodiments may be made without departing from the spirit and scope of the invention. Patent protection of the invention The scope must still be determined by the scope of the attached patent application.

101‧‧‧analysis module

102‧‧‧ calculus module

103‧‧‧Transition module

Step 201‧‧‧ Preset a random number interval

Step 202‧‧‧Read the English characters and symbol characters built into the operating system one by one according to the order of character encoding

Step 203‧‧‧All English characters and symbol characters built into the operating system are read

Step 204‧‧‧ Randomly retrieve a value from the random number interval as the offset

Step 205‧‧‧ encode the English character or the symbol character according to the offset offset character to obtain a unique and non-repeating corresponding conversion character

Step 206‧‧‧ Record the read English character or the conversion character corresponding to the symbol character in the character conversion table

Step 207‧‧‧ reading at least one original string in the encrypted file to be chaotic offset

Step 208‧‧‧ Converting each original character in at least one original string into a corresponding conversion character according to a character conversion table to form an encrypted string of at least one random number offset

Figure 1 is a block diagram of an encryption system for a random number offset according to the present invention.

Fig. 2 is a flow chart showing the encryption method of the random number offset of the present invention.

Step 201‧‧‧ Preset a random number interval

Step 202‧‧‧Read the English characters and symbol characters built into the operating system one by one according to the order of character encoding

Step 203‧‧‧All English characters and symbol characters built into the operating system are read

Step 204‧‧‧ Randomly retrieve a value from the random number interval as the offset

Step 205‧‧‧ encode the English character or the symbol character according to the offset offset character to obtain a unique and non-repeating corresponding conversion character

Step 206‧‧‧ Record the read English character or the conversion character corresponding to the symbol character in the character conversion table

Step 207‧‧‧ reading at least one original string in the encrypted file to be chaotic offset

Step 208‧‧‧ Converting each original character in at least one original string into a corresponding conversion character according to a character conversion table to form an encrypted string of at least one random number offset

Claims (10)

An encryption system for random number offset, which is suitable for encrypting an encrypted file of a random number offset containing only English characters and symbol characters, wherein each English character built in the operating system And each symbol character corresponds to a unique and non-repeating one-character code. The system comprises: a calculation module, and a random number interval is preset to read the one-by-one according to the sequence of the character encoding. The English character and the symbol characters, wherein each time an English character or a symbol character is read, the calculation module extracts a value from the random number interval as an offset, the English word The symbol or the symbol character is encoded according to the offset offset character to obtain a unique and non-repeating corresponding one of the converted characters, and the English character or the converted character corresponding to the symbol character is recorded in the a character conversion table; an parsing module for reading at least one original string in the encrypted file to be chaotic offset; and a conversion module for using the at least one character conversion table according to the character conversion table Convert each original character of the original string to correspond Converting each character to form at least a nonce encrypted string offsets. The encryption system of the random number offset according to the first aspect of the invention, wherein the parsing module is further configured to record the symbol character in the encrypted file to be chaotic offset and its corresponding position in a decryption auxiliary file. The at least one original string is disassembled from the encrypted file to be chaotic offset, and the number of characters of each original string is sequentially recorded in the decryption auxiliary file. The encryption system of the random number offset according to claim 2, wherein the conversion module is further configured to: according to the character conversion table, each of the at least one original string Converting the original character to the corresponding converted character to form the encrypted string of the at least one random offset, rearranging the number of characters of each original string, and then according to the number of characters of the original string after rearrangement All characters of the at least one random offset encrypted string are recombined into at least one recombined string. The cryptographic system of the erratic offset as described in claim 3, wherein the conversion module is further configured to combine the at least one recombination string with the decryption auxiliary file into a random offset encrypted file. The cryptographic system of the erratic offset according to claim 1, wherein the calculus module is further configured to reenter the word when the offset character code exceeds the maximum value of all the character codes according to the offset. The minimum value of the metacode performs the offset. An encryption method for random number offset, which is suitable for encrypting an encrypted file of an odd-numbered offset containing only English characters and symbol characters, wherein each English character built in the operating system And each symbol character corresponds to a unique and non-repeating one-character code, and the method comprises the following steps: presetting a random number interval; reading the English characters one by one according to the sequence of the character encoding The symbol characters, wherein each time an English character or a symbol character is read, performing the following steps: extracting a value from the random number value interval as an offset; the English character or the symbol word The element is encoded according to the offset offset character to obtain a unique one and does not repeat the corresponding one of the converted characters; and the English character or the converted character corresponding to the symbol character is recorded in a character conversion table. Reading at least one original string in the encrypted file to be chaotic offset; and Converting each of the at least one original string into a corresponding one of the converted characters according to the character conversion table to form an encrypted string of at least one random number offset. The method for encrypting a random number offset according to claim 6, wherein the step of reading the at least one original string in the encrypted file to be chaotic offset includes the following steps: recording the Each symbol character in the encrypted file of the random number offset and its corresponding position are in a decryption auxiliary file; and the at least one original string is disassembled from the encrypted file to be offset by the random number, and each The number of characters of an original string is sequentially recorded in the decryption auxiliary file. The method for encrypting a random number offset according to claim 7, wherein each original character in the at least one original string is converted into a corresponding converted character according to the character conversion table to form at least one After the step of encrypting the encrypted encrypted string, the step of forming at least one recombined string according to all the characters of the encrypted string of the at least one random offset is further included. The method for encrypting a random number offset according to claim 8, wherein the method further comprises: after converting the at least one original string into the encrypted string of the at least one random offset, rearranging the original strings. And the step of recombining all the characters of the encrypted string of the at least one random offset into at least one recombination string according to the number of characters of the rearranged original string. The encryption method for random number offset according to claim 6, wherein the English character or the symbol character is encoded according to the offset offset character to obtain a unique and non-repeating corresponding conversion word. The step of the element further includes returning when the offset character code exceeds the maximum value of all character codes according to the offset The step of performing the offset by the minimum value of the character encoding.