Difference between revisions of "Cryptography"

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__NOTOC__
 
__NOTOC__
'''Supported platforms:''' <br/>
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<!-- GIDEROSOBJ:Cryptography -->
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'''Supported platforms:''' [[File:Platform android.png]][[File:Platform ios.png]][[File:Platform mac.png]][[File:Platform pc.png]][[File:Platform html5.png]][[File:Platform winrt.png]][[File:Platform win32.png]]<br/>
 
'''Available since:''' Gideros 2016.04<br/>
 
'''Available since:''' Gideros 2016.04<br/>
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=== Description ===
 
=== Description ===
Cryptographic primitives
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Cryptographic primitives.
 
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=== Example ===
 
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<syntaxhighlight lang="lua">
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local key = "GiderosGideros11"
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local iv = "GiderosRules2023"
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local paddingType = 1
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local function cryptCopy(src, dst)
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local srcf = io.open(src, "rb")
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local dstf = io.open(dst, "wb")
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local size = 2^13 -- good buffer size (8K)
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while true do
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local block = srcf:read(size)
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if not block then break end
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block = Cryptography.aesEncrypt(block,key,iv,paddingType)
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dstf:write(block)
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end
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srcf:close()
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dstf:close()
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end
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local function decryptCopy(src, dst)
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local srcf = io.open(src, "rb")
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local dstf = io.open(dst, "wb")
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local size = 2^13 + 16 -- good buffer size (8K + 16 for padding)
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while true do
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local block = srcf:read(size)
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if not block then break end
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block = Cryptography.aesDecrypt(block,key,iv,paddingType)
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dstf:write(block)
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end
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srcf:close()
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dstf:close()
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end
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cryptCopy ("|D|myfile.sqlite", "C:/tmp/myfile.crypt")
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decryptCopy ("C:/tmp/myfile.crypt", "C:/tmp/myfile.sqlite")
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</syntaxhighlight>
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{|-
 
{|-
| style="width: 50%;"|
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| style="width: 50%; vertical-align:top;"|
 
=== Methods ===
 
=== Methods ===
[[Cryptography.aesDecrypt]] - Decrypt an AES 128 string<br/>
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[[Cryptography.aesDecrypt]] ''decrypts an AES string''<br/><!--GIDEROSMTD:Cryptography.aesDecrypt(ciphertext,key,iv,paddingType) decrypts an AES string-->
[[Cryptography.aesEncrypt]] - Encrypt a string with AES<br/>
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[[Cryptography.aesEncrypt]] ''encrypts a string with AES''<br/><!--GIDEROSMTD:Cryptography.aesEncrypt(plaintext,key,iv,paddingType) encrypts a string with AES-->
[[Cryptography.md5]] - Compute the MD5 hash of the input string<br/>
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[[Cryptography.b64]] ''Base64 encode some data''<br/><!--GIDEROSMTD:Cryptography.b64(data) Base64 encode some data-->
| style="width: 50%;"|
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[[Cryptography.md5]] ''computes the MD5 hash of the input string''<br/><!--GIDEROSMTD:Cryptography.md5(input) computes the MD5 hash of the input string-->
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[[Cryptography.pbkdf2]] ''Password-Based Key Derivation Function 2''<br/><!--GIDEROSMTD:Cryptography.pbkdf2(password,salt,iterations,outputLength) Password-Based Key Derivation Function 2-->
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[[Cryptography.sha1]] ''sha1 encode some data''<br/><!--GIDEROSMTD:Cryptography.sha1(data) sha1 encode some data-->
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[[Cryptography.unb64]] ''Base64 decode a string''<br/><!--GIDEROSMTD:Cryptography.unb64(string) Base64 decode a string-->
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| style="width: 50%; vertical-align:top;"|
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=== Events ===
 
=== Events ===
 
=== Constants ===
 
=== Constants ===
 
|}
 
|}
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{{GIDEROS IMPORTANT LINKS}}

Latest revision as of 18:40, 15 December 2023

Supported platforms: Platform android.pngPlatform ios.pngPlatform mac.pngPlatform pc.pngPlatform html5.pngPlatform winrt.pngPlatform win32.png
Available since: Gideros 2016.04

Description

Cryptographic primitives.

Example

local key = "GiderosGideros11"
local iv = "GiderosRules2023"
local paddingType = 1


local function cryptCopy(src, dst)
	local srcf = io.open(src, "rb")
	local dstf = io.open(dst, "wb")
	local size = 2^13 -- good buffer size (8K)
	while true do
		local block = srcf:read(size)
		if not block then break end
		block = Cryptography.aesEncrypt(block,key,iv,paddingType)
		dstf:write(block)
	end
	srcf:close()
	dstf:close()
end

local function decryptCopy(src, dst)
	local srcf = io.open(src, "rb")
	local dstf = io.open(dst, "wb")
	local size = 2^13 + 16 -- good buffer size (8K + 16 for padding)
	while true do
		local block = srcf:read(size)
		if not block then break end
		block = Cryptography.aesDecrypt(block,key,iv,paddingType)
		dstf:write(block)
	end
	srcf:close()
	dstf:close()
end

cryptCopy ("|D|myfile.sqlite", "C:/tmp/myfile.crypt")
decryptCopy ("C:/tmp/myfile.crypt", "C:/tmp/myfile.sqlite")

Methods

Cryptography.aesDecrypt decrypts an AES string
Cryptography.aesEncrypt encrypts a string with AES
Cryptography.b64 Base64 encode some data
Cryptography.md5 computes the MD5 hash of the input string
Cryptography.pbkdf2 Password-Based Key Derivation Function 2
Cryptography.sha1 sha1 encode some data
Cryptography.unb64 Base64 decode a string

Events

Constants