WO2016029801A1 - Encoding and decoding method, encoding device and decoding device - Google Patents

Abstract

Provided in an embodiment of the present invention are an encoding and decoding method, and encoding device and decoding device, the encoding method comprising: acquiring data to be encoded, the data to be encoded being a binary character string; and according to a base-64 encoding rule, encoding the data to be encoded so as to obtain encoded data corresponding to the data to be encoded, the encoded data being a base-64 encoded character string, and the base-64 encoding rule utilizing the following 64 characters: 0-9, @, A-Z, _ and a-z. The encoding method shortens the length of the data to be encoded and saves storage space. All characters in the character set employed by the encoding method in the embodiment of the present invention can be used as file names in a Linux operating system and a Windows operating system, and the characters "@" and "_" can be directly used in a shell and a regular expression, and the encoding method is compatible with a code statement in the common languages C/C++/Java; therefore, the encoding method has a better compatibility.

Description

Encoding, decoding method, and encoding device and decoding device Technical field

Embodiments of the present invention relate to data communication technologies, and in particular, to an encoding and decoding method, and an encoding apparatus and a decoding apparatus.

Background technique

In big data scenarios, applications such as log text and K-means contain a large number of character numbers, which are characters that can be displayed and printed in text and stored as strings. Character-type numbers take up more storage space than digital-type numbers, for example, a decimal number of 255. If stored as a digital number, only 1 byte is needed, because 1 byte can store 256 different states (0 ~255). If it is stored in a character type, it takes 3 bytes. At this time, only 10 states (0-9) are used for each byte, and a large number of states are wasted.

In order to reduce the storage space of character-type numbers, in the prior art, by increasing the number of digits, each character-type number can store more states, thereby reducing the storage space of character-type numbers. For example, storing a 64-character-encoded character number can save about 44.6% of the storage space compared to storing a 10-digit-encoded character-type number, and storing a 64-encoded character-type number relative to a hexadecimal-encoded character type. The number can save about 1/3 of the storage space. The existing 64-ary encoding method uses the character set: AZ, az, 0-9, +, /, and the character set represents the ASCII code values of 0-25, 26-51, 52-61, 62 respectively. 63.

However, in the prior art, the character "/" cannot be used as a file name under the Linux operating system and the Windows operating system, and the character "+" indicates one or more in the shell, and must be escaped to be used as an ordinary character. And the characters "/" and "+" represent the divisor and plus sign respectively in the operator, which is ambiguous when written as an expression. For example, the string "///" can be understood as a hexadecimal string using 64-ary encoding, or a decimal formula: 63/63. Among them, the shell here can usually be called shell, which refers to a software that can provide users with an interface.

Summary of the invention

The embodiment of the invention provides an encoding and decoding method, an encoding device and a decoding device, so as to solve the problem that some characters of the 64-ary encoding method in the prior art cannot be used as file names in the Linux operating system and the Windows operating system, and in the operation. The problem of ambiguity in the formula.

A first aspect of the present invention provides an encoding method, including:

Obtaining data to be encoded, where the data to be encoded is a binary string;

Encoding the data to be encoded according to a hexadecimal encoding rule to obtain encoded data corresponding to the data to be encoded, where the encoded data is a 64-ary encoded string, wherein the 64-ary encoding rule The character set used includes the following 64 characters: 0-9, @, AZ, _, and az.

With reference to the first aspect of the present invention, in a first possible implementation manner of the first aspect of the present invention, the order of the size of the characters represented by the characters in the character set and the size of the ASCII code of the US standard exchange information code of the characters be consistent.

With reference to the first possible implementation manner of the first aspect of the present invention, in the second possible implementation manner of the first aspect of the present invention, the order of the characters in the character set is from 0 to 9, and in sequence: 0-9, @ , AZ, _, az, wherein the number represented by the hexadecimal coded characters 0-9 is 0-9, the number represented by the hexadecimal coded character @ is 10, and the hexadecimal coded character AZ represents The number is 11-36, the number represented by the hexadecimal coded character _ is 37, and the number represented by the hexadecimal coded character az is 38-63.

In conjunction with the first aspect of the present invention and the first and second possible implementations of the first aspect, in a third possible implementation of the first aspect of the present invention, the 64-ary encoded string has an initial a character, the start character is used to identify a starting position of the 64-ary encoded string.

A second aspect of the present invention provides a decoding method, including:

Obtaining data to be decoded, where the data to be decoded is a 64-ary encoded string;

And decoding the data to be decoded according to a 64-ary decoding rule to obtain decoded data of the data to be decoded, where the decoded data is a binary string, where a character set used by the 64-ary decoding rule includes The following 64 characters: 0-9, @, AZ, _, and az.

A third aspect of the present invention provides an encoding apparatus, including:

An obtaining module, configured to acquire data to be encoded, where the data to be encoded is a binary string;

An encoding module, configured to encode the data to be encoded according to a hexadecimal encoding rule to obtain encoded data of the data to be encoded, where the encoded data is a 64-ary encoded string, wherein the 64 The character set used by the hexadecimal encoding rule includes the following 64 characters: 0-9, @, AZ, _, a-z.

With reference to the third aspect of the present invention, in a first possible implementation manner of the third aspect of the present invention, the order of the size of the characters represented by the characters in the character set and the order of the size of the American standard exchange information code ASCII code of the characters be consistent.

With reference to the first possible implementation manner of the third aspect of the present invention, in the second possible implementation manner of the third aspect of the present invention, the order of the characters in the character set is as follows: 0-9, @, AZ, _, az, wherein the number represented by the 64-ary coded characters 0-9 is 0-9, and the number represented by the 64-ary coded character @ is 10, and the code of the 64-ary coded character AZ The number is 11-36, the number represented by the hexadecimal coded character _ is 37, and the number represented by the hexadecimal coded character az is 38-63.

In conjunction with the third aspect of the present invention and the first and second possible implementations of the third aspect, in a third possible implementation of the third aspect of the present invention, the 64-ary encoded string has a start a character, the start character is used to identify a starting position of the 64-ary encoded string.

A fourth aspect of the present invention provides a decoding apparatus, including:

An acquiring module, configured to acquire data to be decoded, where the data to be decoded is a 64-ary encoded string;

a decoding module, configured to encode the data to be decoded according to a 64-ary decoding rule to obtain decoded data corresponding to the data to be decoded, where the decoded data is a binary string, where the 64-ary decoding The character set used by the rule includes the following 64 characters: 0-9, @, AZ, _, az.

A fifth aspect of the present invention provides an encoding apparatus, including:

a processor, a memory, and a system bus, wherein the processor and the memory are connected by the system bus and complete communication with each other;

The memory is configured to store a computer execution instruction;

The processor, configured to execute the computer to execute instructions, to cause the encoding apparatus to perform the method of any one of the first to third possible implementations of the first aspect and the first aspect of the present invention .

A sixth aspect of the present invention provides a decoding apparatus, including:

a processor, a memory, and a system bus, wherein the processor and the memory are connected by the system bus and complete communication with each other;

The memory is configured to store a computer execution instruction;

The processor is configured to execute the computer to execute an instruction to cause the decoding device to perform the method provided by the second aspect of the present invention.

The encoding and decoding method and the encoding device and the decoding device are provided by the embodiment of the present invention. The encoding device obtains data to be encoded, and the data to be encoded is a binary character string; the to-be-coded according to a 64-ary encoding rule The data is encoded to obtain the encoded data corresponding to the data to be encoded, and the encoded data is a 64-ary encoded string, wherein the character set used by the 64-ary encoding rule includes the following 64 characters: -9, @, AZ, _, az. The encoding method encodes the data to be encoded to shorten the length of the data to be encoded, thereby saving storage space. All characters of the character set can be used as file names under linux and windows, and the character "@" And "_" are not arithmetic operators and logical operators. They are not ambiguous when written as an expression, and can uniquely represent an expression. In addition, the characters "@" and "_" can be used directly in the shell, regular expressions, and are compatible with code statements in the common language C/C++/Java. Compared with the existing 64-ary coding method, the coding method provided by the embodiment of the present invention has a wider application scope and stronger compatibility.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly made below.

1 is a flowchart of an encoding method according to Embodiment 1 of the present invention;

2 is a flowchart of a decoding method according to Embodiment 2 of the present invention;

3 is a schematic structural diagram of an encoding apparatus according to Embodiment 3 of the present invention;

4 is a schematic structural diagram of a decoding apparatus according to Embodiment 4 of the present invention;

FIG. 5 is a schematic structural diagram of an encoding apparatus according to Embodiment 5 of the present invention; FIG.

FIG. 6 is a schematic structural diagram of a decoding apparatus according to Embodiment 6 of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is apparent that the described embodiments are a part of the embodiments of the invention, and not all of the embodiments.

Base64 encoding is an encoding method that represents binary data based on 64 printable characters. Since the 6th power of 2 is equal to 64, each 6 bits is a unit, and the unit corresponds to one printable character. When using Base64 encoding, each time three bytes of data are read for encoding, three bytes are 24 bits in total, each 6 bits is one unit, three bytes of data corresponds to 4 units, and the three-byte data is encoded by Base64. The encoded data is then obtained as 4 characters, that is, 3 bytes of data when using Base64 encoding needs to be represented by 4 printable characters. The printable characters in Base64 encoding include the letters AZ, az, numbers 0-9, a total of 62 characters, and the other two printable characters are different in different systems. In Base64, the other two printable characters are operands. +" and "/".

The Base64 encoding has a wide range of application scenarios. In one scenario, the Base64 encoding application can be used to transmit long identification information in a hypertext transfer protocol (HTTP) environment. For example, in the Java persistence system Hibernate, Base64 encoding is used to encode a long unique identifier into a 64-ary string. In other applications, it is often necessary to encode binary data into a form suitable for placement in a Universal Resource Locator (URL). At this time, the use of Base64 encoding not only makes the encoded data relatively short, but also makes the encoded data not directly recognized by the human eye. In another scenario, the link can be encrypted with Base64 encoding to ensure data security. Alternatively, you can use Base64 encoding to encode emails in the Multipurpose Internet Mail Extensions (MIME) format, or use Base64 encoding to extensible Markup Language (XML). The complex data in it is encoded and stored. In a big data environment, Base64 encoding can be used to encode data that needs to be stored as a string, such as Base64 encoding of file names or log content.

However, in the existing Base64 encoded character set, the character "/" cannot be used as a file name under the Linux operating system and the Windows operating system. The character "+" means one or more in the shell, and must be escaped as an ordinary character. use. Therefore, the existing Base64 coding method has certain application limitations.

The character set used in the 64-ary encoding provided by the embodiment of the present invention is different from the existing Base64 encoded character set, and can improve the application range of the 64-ary encoding, and has better compatibility. The encoding method and the decoding method provided by the embodiments of the present invention are described in detail below.

1 is a flowchart of an encoding method according to Embodiment 1 of the present invention. The method in this embodiment may be performed by an encoding device integrated in a server or a personal computer (PC), as shown in FIG. The method of this embodiment may include the following steps:

Step 101: Acquire data to be encoded, where the data to be encoded is a binary string.

Step 102: Encode the data to be encoded according to a hexadecimal encoding rule to obtain encoded data corresponding to the data to be encoded, where the encoded data is a 64-ary encoded string, where the 64-ary encoding rule is used. The character set includes the following 64 characters: 0-9, @, AZ, _, az.

All data in the computer is stored in binary numbers when storing and computing. When the data is a displayable character type, the ASCII code corresponding to the data is stored in the computer. ASCII codes use a specified combination of 7-bit or 8-bit binary numbers to represent 128 or 256 possible characters. Taking the number 4095 as an example, when the 4095 is stored as a digital number, its corresponding binary string is 111111111111, which is 12 bits in total, and requires two bytes. When the 4095 is stored as a character type number, if the character type number is not encoded, that is, it is directly stored in binary mode, then 4 bytes are required, that is, the characters "4", "0", "9", and "5" respectively occupy One byte, stored in the computer, is specifically stored in the American Standard Code for Information (ASCII) corresponding to the characters "4", "0", "9", and "5".

Character-type numbers are stored in binary mode and occupy a large storage space. In order to reduce the space occupied by character-type digital storage, character-type numbers need to be encoded. In the method of this embodiment, the character type number can be 64-ary coded, and then the ASCII code value corresponding to the encoded 64-character string is stored, and the encoded 64-character string occupies less storage space before encoding. Occupied storage space. For example, the decimal number 4095, the corresponding binary string is 111111111111, when encoding in 64, the binary string is divided into 6 bits, then the divided string is "111111/111111", "111111" Indicates the number 64. The character representing the number 64 is selected as the character after the 64-bit encoding from the character set used by the 64-encoding rule. If the character "z" is used to represent the number 64 in the 64-encoding rule, then the converted 64 The encoded string is zz. In this embodiment, the number represented by 64 characters is not limited: the characters “0-9, @, AZ, _, az” may correspond to any one of “0-63”, and each character can only uniquely correspond. a number. According to the above example, when the decimal number 4095 is stored as a character type number, if it takes 2 bytes to store in binary data, if only two bytes are stored in 64-bit data, the length of the string can be shortened. , saving storage space for character numbers.

The character set used in the 64-ary encoding rule in this embodiment is different from the character set used in the existing 64-ary encoding rule. The character set used in the 64-ary encoding rule of this embodiment satisfies the following three conditions: (1) can be used as a file name under linux or windows; (2) cannot be an arithmetic operation and a logical operation symbol; (3) shell, It can be used directly in regular expressions, does not conflict with existing syntax, and is compatible with code statements in the common language C/C++/Java.

According to the above three conditions, the following 64 characters are selected from all visible strings of ASCII code: 0-9, @, A-Z, _, and a-z. The 64 characters used by Base64 are: 0-9, az, AZ, +, /. The character set of the 64-ary encoding rule in this embodiment replaces the character in Base64 with the characters "@" and "_". +" and "/". The characters "@" and "_" in this embodiment can be used as file names under the Linux operating system and the Windows operating system. Moreover, the characters "@" and "_" are not arithmetic operators and logical operators, and are not ambiguous when written as an arithmetic expression, and can uniquely represent an arithmetic expression. In addition, the characters "@" and "_" do not conflict with existing syntax, can be used in shells, regular expressions, without conversion, and are compatible with common programming languages C / C + + and Java code statements.

In the embodiment of the present invention, a character set using a 64-ary code can be used as a file name and is compatible with a shell. For example: mkdir_aS; ls|grep@_3; find/-name D_@. The character set using the 64-ary code can also be directly written into the expression. For example, the decimal expression is: (127+1473)/40=40, and its corresponding 64-ary expression is: (1_+M1)/c= c, the character of the expression is shortened from 16 characters to 11 characters.

In this embodiment, when encoding is performed using a hexadecimal encoding rule, first, 3 bytes of data to be encoded are sequentially read into a 24-bit buffer, and the data first put into the buffer occupies a high level, when to be encoded. When the data is less than 3 bytes, the remaining bits in the buffer are padded with 0s. Then, in the order of the string, the 6-bit string is read out from the buffer every time from the high to the low, and the 64-encoded character corresponding to the 6-bit string is selected from the character set used by the 64-encoding rule. The 64-ary coded character corresponding to the 6-bit character string is encoded as the 6-bit character string, and the remaining bytes in the buffer are sequentially encoded until all the data to be encoded is encoded. When the length of the data to be encoded is not an integer multiple of 3 bytes, if one byte of data is left last, then one "=" is added after the encoded data; if the last two bytes of data are left, then Add 2 "=" after encoding the data; if there is no data left, then nothing is added. The purpose of this is to ensure the correctness of the data decoding.

Similar to the hexadecimal start tag “0” and the hexadecimal start tag “0x”, in this embodiment, the 64-ary coded string also has a start character, which is used to identify 64 The starting position of the encoded string. For example, the character "_@" indicates the start character of the 64-ary encoded string, from the first character after "_@" to the first non-64-encoded character. The number is recognized by the decoding device as a hexadecimal number. In the standard input and output format, similar to octal "%o" and hexadecimal "%x", use "%_" to indicate whether to input or output a hex string, or use the sprintf function. %s" outputs a hexadecimal number as a string.

In this embodiment, the data to be encoded is coded in hexadecimal to shorten the length of the data to be encoded, thereby saving storage space. All characters selected in the hexadecimal encoding of this embodiment can be used in the Linux operating system and The Windows operating system is used as a file name, and the characters "@" and "_" are not arithmetic operators and logical operators. They are not ambiguous when written as an arithmetic expression, and can uniquely represent an arithmetic expression. In addition, the characters "@" and "_" can be used directly in the shell, regular expressions, do not conflict with the existing syntax, and are compatible with code statements in the common language C / C + + / Java. Compared with the existing 64-ary coding method, the coding method provided by the embodiment of the present invention has a wider application range and is more compatible.

The encoding method of this embodiment can be applied to a server, or a PC, after the encoding device of the server or the PC encodes the data to be encoded, the server or the PC can send the encoded data to other devices, for example, when When the 64-ary encoding method is used as the transmission encoding method of the e-mail, the server or the PC device transmits the encoded data to the terminal of the mail recipient. Alternatively, the server or the PC stores the encoded data. When storing the encoded data, the actual stored ASCII code value corresponding to the encoded 64-ary encoded string, for example, the encoded 64-ary code. The string is ABCD, then the ASCII code values corresponding to the hexadecimal characters "A", "B", "C", and "D" are stored separately during storage.

The encoding method of this embodiment is applicable to a big data scenario. In a big data scenario, some application content such as log text and K-means may contain a large number of character numbers, and encoding is required by using a 64-ary encoding method. However, in the big data scenario, not only the storage space problem, but also the sorting performance of big data should be considered. The order of the number of digits represented by each character in the character set used by Base64 encoding is inconsistent with the order of ASCII code values. In the case of big data sorting, the ASCII code value cannot be directly used for comparison, but the 64-ary encoded string is first converted to the corresponding one. Decimal numbers, then compare the size of two decimal numbers, which affects big data sorting performance. Table 1 is existing The relationship between the characters of the Base64 encoding method and the ASCII code value and the number represented:

Table 1

Hex-encoded characters	A-Z	A-z	0-9	+	/
						ASCII code	65-90	97-122	48-57	43	47
Represented number	0-25	26-51	52-61	62	63

For example, when the size of the character numbers A and 0 is to be compared, the number represented by the character A is a decimal number 0, and the number represented by the character 0 is a decimal number 52, and therefore, the character A is smaller than the character 0. If the ASCII code value is directly compared, the ASCII code of the character A is 65, the ASCII code of the character 0 is 48, and the ASCII code of the character A is larger than the ASCII code of the character 0. The result is obviously incorrect. In the prior art, when comparing two hexadecimal strings, the hexadecimal string needs to be first converted to the corresponding decimal number, and the decimal number is used for comparison. Since the conversion of the hexadecimal character to the decimal number is expensive, the overhead is large. Will greatly reduce the performance of big data sorting.

For the performance problem of the big data sorting, in the encoding method of the embodiment of the present invention, the order of the numbers represented by the characters in the character set used in the 64-ary encoding rule is consistent with the order of the ASCII code values, as shown in Table 2. The order of the characters in the character set is as follows: 0-9, @, AZ, _, az, the number of characters represented by 0-9 in the hexadecimal coded characters is 0-9, and the number represented by the hexadecimal coded characters @ is 10 The number represented by the 64-ary coded character AZ is 11-36, the number represented by the hexadecimal coded character _ is 37, and the number represented by the ASCII coded character az is 38-63. It can be clearly seen from Table 2 that the numbers represented by the hexadecimal coded characters are sequentially incremented, and the corresponding ASCII code values are also sequentially incremented. Therefore, in the case of big data sorting, the ASCII coded characters can be directly used. Code value comparison. For example, the hexadecimal strings "@8Fs" and "_u0I" have the same number of bits in the two strings. You can only compare the ASCII size of the first character of the two strings, the ASCII code of the character "@". 64, the ASCII code of the character "_" is 95, the ASCII code of the character "@" is less than the ASCII code of the character "_" is 95, therefore, the string "@8Fs" is smaller than the string "_u0I. If the existing Base64 encoding is used The method first converts the character "@" to the corresponding number 10, and converts the character "_" to the corresponding number 37. Since the number 10 is smaller than the number 37, the character "@" is smaller than the character "_", and the comparison is directly The comparison result using the ASCII code value for comparison is the same as the result of converting the ASCII code value to the corresponding number.

Table 2

Hex-encoded characters	0-9	@	A-Z	_	A-z
						ASCII code	48-57	64	65-90	95	47
Representative value	0-9	10	11-36	37	97-122

In this embodiment, the order of the numbers represented by the characters in the character set used by setting the hexadecimal encoding rule is the same as the ASCII code order. Therefore, the ASCII value of the hexadecimal string can be directly used for comparison, which reduces the size. The overhead of sorting data.

2 is a flowchart of a decoding method according to Embodiment 2 of the present invention. The method in this embodiment may be performed by a decoding device, and the decoding device is integrated in a server or a PC. As shown in FIG. 2, the method provided in this embodiment is shown in FIG. The steps can be included:

Step 201: Acquire data to be decoded, where the data to be decoded is a 64-ary encoded string.

Step 202: Decode the data to be decoded according to a 64-ary decoding rule to obtain decoded data corresponding to the data to be decoded, where the decoded data is a binary string, where the character set used by the 64-ary decoding rule includes The following 64 characters: 0-9, @, AZ, _, az.

The decoding method of this embodiment is the inverse of the encoding method of the first embodiment, that is, converting a 64-ary string into a binary string. Specifically, each character of the hexadecimal string is converted into a corresponding binary string, and then the binary string corresponding to each character is sequentially connected to obtain a binary string corresponding to the hexadecimal string. For example, the hexadecimal string zz, the character z is converted to a binary string of 111111, then the binary string corresponding to the hexadecimal string zz is 11111111111, and the decimal number corresponding to the binary string is 4095.

FIG. 3 is a schematic structural diagram of an encoding apparatus according to Embodiment 3 of the present invention. As shown in FIG. 3, the encoding apparatus of this embodiment includes: an obtaining module 11 and an encoding module 12.

The obtaining module 11 is configured to obtain data to be encoded, where the data to be encoded is a binary string;

The encoding module 12 is configured to encode the data to be encoded according to a hexadecimal encoding rule to obtain encoded data of the data to be encoded, where the encoded data is a 64-ary encoded string, where The character set used by the hexadecimal encoding rule includes the following 64 characters: 0-9, @, AZ, _, az.

Optionally, in this embodiment, the order of the size of the numbers represented by the characters in the character set is consistent with the order of the size of the US standard exchange information code ASCII code of the characters.

Optionally, the order of the characters in the character set is as follows: 0-9, @, A-Z, _, Az, wherein the number represented by the hexadecimal coded characters 0-9 is 0-9, the number represented by the hexadecimal coded character @ is 10, and the number represented by the 64-ary coded character AZ is 11- 36. The number represented by the hexadecimal coded character _ is 37, and the number represented by the hexadecimal coded character az is 38-63.

In this embodiment, the 64-ary encoded character string has a start character, and the start character is used to identify a starting position of the 64-ary encoded character string.

The encoding device of this embodiment can be used to perform the encoding method provided in the first embodiment, and the implementation principle and technical effects thereof are similar, and details are not described herein again.

4 is a schematic structural diagram of a decoding apparatus according to Embodiment 4 of the present invention. As shown in FIG. 4, the decoding apparatus of this embodiment includes: an obtaining module 21 and a decoding module 22.

The acquiring module is configured to obtain data to be decoded, where the data to be decoded is a 64-ary encoded string;

a decoding module, configured to encode the data to be decoded according to a 64-ary decoding rule to obtain decoded data corresponding to the data to be decoded, where the decoded data is a binary string, where the 64-ary decoding The character set used by the rule includes the following 64 characters: 0-9, @, AZ, _, az.

The decoding apparatus of this embodiment may be used to perform the decoding method provided in the second embodiment, and the implementation principle and technical effects thereof are similar, and details are not described herein again.

FIG. 5 is a schematic structural diagram of an encoding apparatus according to Embodiment 5 of the present invention. As shown in FIG. 5, the encoding apparatus 300 of this embodiment includes: a processor 31, a memory 32, and a system bus 33, and the processor 31 and the The memory 32 is connected through the system bus 33 and completes communication with each other; the memory 32 is used to store computer execution instructions 321; the processor 31 is configured to run the computer execution instructions 321 to perform the following The method described:

Obtaining data to be encoded, where the data to be encoded is a binary string;

Encoding the data to be encoded according to a hexadecimal encoding rule to obtain encoded data corresponding to the data to be encoded, where the encoded data is a 64-ary encoded string, wherein the 64-ary encoding rule The character set used includes the following 64 characters: 0-9, @, AZ, _, and az.

Optionally, the order of the size of the numbers represented by the characters in the character set is consistent with the order of the size of the US standard exchange information code ASCII code of the characters.

Optionally, the order of the characters in the character set is as follows: 0-9, @, A-Z, _, Az, wherein the number represented by the hexadecimal coded characters 0-9 is 0-9, the number represented by the hexadecimal coded character @ is 10, and the number represented by the 64-ary coded character AZ is 11- 36. The number represented by the hexadecimal coded character _ is 37, and the number represented by the hexadecimal coded character az is 38-63.

In this embodiment, the 64-ary encoded character string has a start character, and the start character is used to identify a starting position of the 64-ary encoded character string.

The encoding device of this embodiment can be used to perform the encoding method provided in the first embodiment, and the implementation principle and technical effects thereof are similar, and details are not described herein again.

FIG. 6 is a schematic structural diagram of a decoding apparatus according to Embodiment 6 of the present invention. As shown in FIG. 6, the decoding apparatus 400 of this embodiment includes: a processor 41, a memory 42 and a system bus 43, the processor 41 and the The memory 42 is connected through the system bus 43 and completes communication with each other; the memory 42 is configured to store a computer execution instruction 421; the processor 41 is configured to run the computer execution instruction 421 to execute the following The method described:

Obtaining data to be decoded, where the data to be decoded is a 64-ary encoded string;

And decoding the data to be decoded according to a 64-ary decoding rule to obtain decoded data of the data to be decoded, where the decoded data is a binary string, where a character set used by the 64-ary decoding rule includes The following 64 characters: 0-9, @, AZ, _, and az.

The decoding apparatus of this embodiment may be used to perform the decoding method provided in the second embodiment, and the implementation principle and technical effects thereof are similar, and details are not described herein again.

One of ordinary skill in the art will appreciate that all or part of the steps to implement the various method embodiments described above may be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

It should be noted that the embodiments provided in the present application are merely illustrative. For example, the division of each component in the above embodiment may have another division manner in actual implementation. For example, multiple modules or components may be combined or integrated into another device, or some features may be omitted or not performed. In addition, the coupling or direct coupling or communication connection of the components shown or discussed may be through some communication interface, indirect coupling or communication connection of the modules, and may include electrical, mechanical, or other forms of connection.

It will be apparent to those skilled in the art that, for the convenience and brevity of the description, in the above embodiments, the description of each embodiment has its own emphasis, and the parts which are not described in detail in a certain embodiment can be referred to other implementations. A description of the example. Features disclosed in the embodiments of the invention, the claims, and the drawings may exist independently or in combination. Features described in hardware in the embodiments of the present invention may be implemented by software, and vice versa. There is no limit here.

Claims (12)

1. An encoding method, comprising:

   Obtaining data to be encoded, where the data to be encoded is a binary string;

   Encoding the data to be encoded according to a hexadecimal encoding rule to obtain encoded data corresponding to the data to be encoded, where the encoded data is a 64-ary encoded string, wherein the 64-ary encoding rule The character set used includes the following 64 characters: 0-9, @, AZ, _, and az.
2. The method according to claim 1, wherein the order of the magnitudes of the numbers represented by the characters in the character set is consistent with the order of the size of the American Standard Exchange Information Code ASCII code of the characters.
3. The method according to claim 2, wherein the order of the characters in the character set is as follows: 0-9, @, AZ, _, az, wherein the 64-ary coded character 0- The number represented by 9 is 0-9, the number represented by the 64-ary coded character @ is 10, the number represented by the 64-ary coded character AZ is 11-36, and the number represented by the 64-ary coded character_ 37, the number represented by the 64-ary coded character az is 38-63.
4. The method according to any one of claims 1 to 3, wherein the 64-ary encoded character string has a start character, and the start character is used to identify the 64-character encoded string. Starting position.
5. A decoding method, comprising:

   Obtaining data to be decoded, where the data to be decoded is a 64-ary encoded string;

   And decoding the data to be decoded according to a 64-ary decoding rule to obtain decoded data of the data to be decoded, where the decoded data is a binary string, where a character set used by the 64-ary decoding rule includes The following 64 characters: 0-9, @, AZ, _, and az.
6. An encoding device, comprising:

   An obtaining module, configured to acquire data to be encoded, where the data to be encoded is a binary string;

   An encoding module, configured to encode the data to be encoded according to a hexadecimal encoding rule to obtain encoded data of the data to be encoded, where the encoded data is a 64-ary encoded string, wherein the 64 The character set used by the hexadecimal encoding rule includes the following 64 characters: 0-9, @, AZ, _, az.
7. The encoding apparatus according to claim 6, wherein the order of the size of the number represented by the character in the character set and the size of the ASCII code of the US standard exchange information code of the character The order is consistent.
8. The encoding apparatus according to claim 7, wherein the order of the characters in the character set is as follows: 0-9, @, AZ, _, az, wherein the 64-ary coded character 0- The number represented by 9 is 0-9, the number represented by the 64-ary coded character @ is 10, the number represented by the 64-ary coded character AZ is 11-36, and the number represented by the 64-ary coded character_ 37, the number represented by the 64-ary coded character az is 38-63.
9. The encoding apparatus according to any one of claims 6 to 8, wherein the 64-ary encoded character string has a start character, and the start character is used to identify the 64-ary encoded character string. starting point.
10. A decoding device, comprising:

    An acquiring module, configured to acquire data to be decoded, where the data to be decoded is a 64-ary encoded string;

    a decoding module, configured to encode the data to be decoded according to a 64-ary decoding rule to obtain decoded data corresponding to the data to be decoded, where the decoded data is a binary string, where the 64-ary decoding The character set used by the rule includes the following 64 characters: 0-9, @, AZ, _, az.
11. An encoding device, comprising:

    a processor, a memory, and a system bus, wherein the processor and the memory are connected by the system bus and complete communication with each other;

    The memory is configured to store a computer execution instruction;

    The processor, configured to execute the computer to execute an instruction, to cause the encoding device to perform the method of any one of claims 1-4.
12. A decoding device, comprising:

    a processor, a memory, and a system bus, wherein the processor and the memory are connected by the system bus and complete communication with each other;

    The memory is configured to store a computer execution instruction;

    The processor is configured to execute the computer to execute an instruction, and cause the decoding device to perform the method of claim 5.

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