EncodeString: Difference between revisions

From Multi Theft Auto: Wiki
Jump to navigation Jump to search
m (Improved example)
(Add base64 & base32 as #3312)
Line 9: Line 9:
==Syntax==  
==Syntax==  
<syntaxhighlight lang="lua">
<syntaxhighlight lang="lua">
string encodeString ( string algorithm, string input, table options [, function callback ] )   
string encodeString ( string algorithm, string input, [table options, function callback] )   
</syntaxhighlight>  
</syntaxhighlight>  


Line 28: Line 28:
** '''key''': a public key to encode the input. (use [[generateKeyPair]] to create a new private and public key)
** '''key''': a public key to encode the input. (use [[generateKeyPair]] to create a new private and public key)
|21055}}
|21055}}
{{Added feature/item|1.6.0|1.6.1|22402|
* ''base64'' ([https://en.wikipedia.org/wiki/Base64 Base64 Encoding Algorithm])
** '''variant''': a string that defines the encoding variant. (Currently only "URL" is available)
|22402}}
{{Added feature/item|1.6.0|1.6.1|22402|
* ''base32'' ([https://en.wikipedia.org/wiki/Base32 Base32 Encoding Algorithm])
** '''variant''': a string that defines the encoding variant. (Currently only "Hex" is available)
|22402}}


===Optional Arguments===
===Optional Arguments===
Line 43: Line 51:
** '''encodedString''': the encoded string if successful, ''false'' otherwise. If a callback was provided, ''true'' is returned immediately, and the encoded string is passed as an argument to the callback.
** '''encodedString''': the encoded string if successful, ''false'' otherwise. If a callback was provided, ''true'' is returned immediately, and the encoded string is passed as an argument to the callback.
|21055}}
|21055}}
{{New items|3.0159|1.6.1|
* ''base64''
** '''encodedString''': the encoded string if successful, ''false'' otherwise. If a callback was provided, ''true'' is returned immediately, and the encoded string is passed as an argument to the callback.
|22402}}
{{New items|3.0159|1.6.1|
* ''base32''
** '''encodedString''': the encoded string if successful, ''false'' otherwise. If a callback was provided, ''true'' is returned immediately, and the encoded string is passed as an argument to the callback.
|22402}}


==Examples==  
==Examples==  

Revision as of 20:06, 19 February 2024

This function encodes a string using the specified algorithm. The counterpart of this function is decodeString.


[[{{{image}}}|link=|]] Tip: If it doesn't matter which algorithm you use for the encoding, keep in mind that aes128 uses hardware acceleration so it may outperform the tea algorithm on most processors.

Syntax

string encodeString ( string algorithm, string input, [table options, function callback] )

Required Arguments

  • algorithm: The algorithm to use.
  • input: The input to encode.
  • options: A table with options and other necessary data for the algorithm, as detailed below.

Options for each algorithm

BETA: NEW FEATURE (BUILD: 1.6.1 r22402)
BETA: NEW FEATURE (BUILD: 1.6.1 r22402)

Optional Arguments

  • callback: providing a callback will run this function asynchronously, the arguments to the callback are the same as the returned values below.

Returns for each algorithm

  • tea
    • encodedString: the encoded string if successful, false otherwise. If a callback was provided, true is returned immediately, and the encoded string is passed as an argument to the callback.
  • aes128
    • encodedString: the encoded string if successful, false otherwise. If a callback was provided, true is returned immediately, and the encoded string is passed as an argument to the callback.
    • iv (Initialization vector): this is a string generated by the encryption algorithm that is needed to decrypt the message by decodeString. If a callback was provided, true is returned immediately, and the iv is passed as an argument to the callback.
  • rsa
    • encodedString: the encoded string if successful, false otherwise. If a callback was provided, true is returned immediately, and the encoded string is passed as an argument to the callback.
  • base64
    • encodedString: the encoded string if successful, false otherwise. If a callback was provided, true is returned immediately, and the encoded string is passed as an argument to the callback.
  • base32
    • encodedString: the encoded string if successful, false otherwise. If a callback was provided, true is returned immediately, and the encoded string is passed as an argument to the callback.

Examples

Click to collapse [-]
Server

Adds an /encode command in which you can provide an algorithm, key and data to encode. Below is the example provided as both server-side and client-side variations. 

addCommandHandler("encode", function(player, _, algorithm, key, ...)
    if not algorithm or not key then
        outputChatBox("Invalid algorithm and/or key.", player, 255, 0, 0)
        return
    end
    local text = table.concat({...}, " ")
    if type(text) ~= "string" or text == "" then
        outputChatBox("Please specify text in the command.", player, 255, 0, 0)
        return
    end
    local encoded = encodeString(algorithm, text, { key = key })
    if not encoded then
        outputChatBox("Failed to encode. Make sure that all arguments are valid.", player, 255, 0, 0)
        return
    end

    outputChatBox("The result of " .. algorithm .. " encoding is: " .. encoded, player)
end)

This example shows you how to use the RSA encryption with a simple string message. 

local private, public = generateKeyPair("rsa", { size = 2048 })

local input = "Hello, world!"
local encrypted = encodeString("rsa", input, { key = public })
local decrypted = decodeString("rsa", encrypted, { key = private })

outputServerLog("RSA test: ".. tostring(input == decrypted))

See Also


Retrieved from "https://wiki.multitheftauto.com/wiki/EncodeString?oldid=78857"