Cryptography

From GiderosMobile
(Redirected from Category:Cryptography)

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