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Encryption / Decryption / Hashing
Cryptography API: Next Generation (CNG) is Microsoft's long-term replacement for their CryptoAPI. CNG is designed to be extensible at many levels and cryptography agnostic in behavior. Although the Crypt.au3 UDF that is installed with AutoIt3 still works perfectly, the advapi32.dll functions that it uses have been deprecated. This UDF was created to offer a replacement for the deprecated functions. According to Microsoft, deprecated functions may be removed in future release. Therefore, this UDF will be available when/if that happens.
This UDF implements some of Microsoft's Cryptography API: Next Generation (CNG) Win32 API functions. In its initial release, it implements functions to encrypt text & files, decrypt text and files, generate hashes, and the Password-Based Key Derivation Function 2 (PBKDF2) function. The UDF can implement any of the encryption/decryption algorithms or hashing algorithms that are installed on the PC in which it is running. Most, if not all, of the values that you would commonly use to specify that desired algorithms, key bit lengths, and other magic number type values, are already defined as constants or enums in the UDF file.
To flatten the learning curve, there is an example file that shows examples of all of the major functionality. This example file is not created to be an exhaustive set of how to implement each feature and parameter. It is designed to give you a template or guide to help you hit the ground running in terms of using the functions. I have tried to fully document the headers of all of the functions as well as the code within the functions themselves. As of v1.4.0, there is also a Help file that includes all of the functions, with examples.
Current UDF Functions
Algorithm-Specific Symmetric Encryption/Decryption Functions _CryptoNG_3DES_CBC_DecryptData _CryptoNG_3DES_CBC_DecryptFile _CryptoNG_3DES_CBC_EncryptData _CryptoNG_3DES_CBC_EncryptFile _CryptoNG_AES_CBC_DecryptData _CryptoNG_AES_CBC_DecryptFile _CryptoNG_AES_CBC_EncryptData _CryptoNG_AES_CBC_EncryptFile
Generic Symmetric Encryption/Decryption Functions _CryptoNG_DecryptData _CryptoNG_DecryptFile _CryptoNG_EncryptData _CryptoNG_EncryptFile
Hashing Functions _CryptoNG_HashData _CryptoNG_HashFile _CryptoNG_PBKDF2
Asymmetric (Public/Private Key) Encryption/Decryption Functions _CryptoNG_RSA_CreateKeyPair _CryptoNG_RSA_EncryptData _CryptoNG_RSA_DecryptData
Misc / Helper Functions _CryptoNG_CryptBinaryToString _CryptoNG_CryptStringToBinary _CryptoNG_GenerateRandom _CryptoNG_EnumAlgorithms _CryptoNG_EnumRegisteredProviders _CryptoNG_EnumKeyStorageProviders _CryptoNG_LastErrorMessage _CryptoNG_Version
Cryptography API: Next Generation - Main Page
Cryptography API: Next Generation - Reference
Cryptography API: Next Generation - Primitives
Cryptography API: Next Generation - Cryptographic Algorithm Providers
CodeCrypter enables you to encrypt scripts without placing the key inside the script.
This is because this key is extracted from the user environment at runtime by, for example:
password user query any macro (e.g., @username) any AutoIt function call any UDF call some permanent environment variable on a specific machine (and not created by your script) a server response a device response anything else you can think of, as long as it's not stored in the script any combination of the above You need several scripts to get this to work, and they are scattered over several threads, so here's a single bundle that contains them all (including a patched version of Ward's AES.au3; with many thanks to Ward for allowing me to include this script here):
Latest version: 3.3d (28 Nov 2020): please follow this link.
Note: if you experience issues under Win8/8.1 (as some users have reported), please upgrade to Win10 (or use Win7) if you can; as far as I can tell, the scripts in the bundle all work under Win7 & Win10 (and XP). Moreover, I have no access to a Win8 box, so these issues will not be fixed, at least not by yours truly.
How the bits and pieces fit together:
CodeCrypter is a front-end for the MCF UDF library (you need version 1.3 or later). Its thread is here:
'?do=embed' frameborder='0' data-embedContent>>
The MCF package (also contained in the CodeScannerCrypter bundle) contains MCF.au3 (the library itself) plus a little include file called MCFinclude.au3. The latter you have to include in any script you wish to encrypt. Any code preceding it will not be encrypted, any code following it will be encrypted. You define the dynamic key inside MCFinclude.au3, in the UDF: _MCFCC_Init().
From the same post you can download an MCF Tutorial which I heartily recommend, because encrypting a script requires a number of steps in the right order, namely:
In MCFinclude.au3, define and/or choose your dynamic key(s) (skip this step = use default setting) include MCFinclude.au3 in your target script Run CodeScanner (version 2.3+) on your target script, with setting WriteMetaCode=True (see '?do=embed' frameborder='0' data-embedContent>>), then close CodeScanner. Start CodeCrypter press the Source button to load your target file enable Write MCF0 (tick the first option in Main Settings) Enable "Encrypt" (last option in the Main Settings) Go to the Tab Encrypt and set up the encryption the way you want (skip this = use default settings) Return to Main Tab and press "Run" if all goes well, a new script called MCF0test.au3 is created in the same directory as your target. It has no includes and no redundant parts. Please check that it works as normal. (see Remarks if not) It all sounds far more complicated than it is, really.
Not convinced? Check out:
a simple HowTo Guide: HowToCodeCrypt.pdf an updated and extended Q & A pdf (FAQ, also included in the bundle) to help you get started:CodeCrypterFAQ.pdf For additional explanations/examples in response to specific questions by forum members (how it works, what it can/cannot do), see elsewhere in this thread, notably:
Simple analogy of how it works: post #53, second part General Explanation and HowTo: post #9, 51, 75, 185/187, 196, 207, 270, 280 (this gets a bit repetitive) BackTranslation: post #179 Obfuscation: post #36 (general), 49 (selective obfuscation) Specific features and fixes: post #3 (security), 84 (redefining the expected runtime response), 169 (Curl Enum fix), 185/187 (using license keys), 194 (replacing Ward's AES UDF with different encryption/decryption calls), 251 (AV detection issue), 262 (extract key contents to USB on different target machine prior to encryption) Limitations: post #26 (@error/@extended), 149 (FileInstall), 191 (AES.au3 on x64) Not recommended: post #46/249 (static encryption), 102 (programme logic error), 237 (parsing password via cmdline)
BackTranslation is a test to check that the MetaCode translation worked. Skip it at your peril. It also turns your multi-include composite script into a single portable file without redundant parts (you can opt to leave the redundant parts in, if you want).
CodeCrypter can also obfuscate (vars and UDF names) and replace strings, variable names and UDF names with anything else you provide, for example, for language translation). After CodeScanner separates your target's structure from its contents, CodeCrypter (actually MCF, under the hood) can change any part, and then generate a new script from whichever pieces you define. See the MCF Tutorial for more explanation and examples.
Encryption currently relies on Ward's excellent AES UDF and TheXman's sophisticated CryptoNG bundle. You can replace these with any other algorithm you like (but this is not trivial to do: edit MCFinclude.au3 UDF _MCFCC(), and MCF.au3 UDF _EncryptEntry(), see post #194 in this thread). AES by Ward, and CryptoNG by TheXman are also included in the bundle (with many thanks to Ward and TheXman for graciously allowing me to republish their outstanding work).
Going to lie down now...
The CodeScannerCrypterBundle (ca. 2.5 MB unzipped) contains the following UDFs and utilities:
CodeScanner: analyse AutoIt script structure and content, identify potential issues, generate MCF data files CodeCrypter: front-end GUI for the MCF library, for script encryption (without storing the decryption key(s) in the script!) MetaCodeFile UDF (MCF library): for analysis and user-defined alterations of AutoIt script structure and content MCFinclude.au3: #include this UDF in any AutoIt script that you wish CodeCrypter to process AES.au3, by Ward; machine code UDF for AES encryption (32-bit, patched version) CryptoNG, by TheXman; encryption UDF using Bcrypt dll calls (32/64-bit; various algorithms) StoreCCprofile.au3/readCSdatadump.au3/helloworld.au3: auxiliary utilities and example script HowToCodeCrypt.pdf: a simple guide in five steps CodeCrypterFAQ.pdf: questions and answers, partly based upon exchanges in the CodeCrypter thread. Please follow the links for additional information.
I would like to know if it is possible to implement an autoit script with GOST algorithm. I noticed that there are seven different algorithms in the standard UDF, but I urgently need a command line crypter with GOST algorithm. I just lack the algorithm part. Is it possible to adapt GPLib in the autoit script?
I had created login form and this form first goes to de-crypting file that encrypted then read the saved credentials by de-cryptied file, but doesn't work properly!
I want just read encrypted data without saving de-crypted file, just read!
#NoTrayIcon #include <Crypt.au3> #include <FileConstants.au3> #include <MsgBoxConstants.au3> #include <ButtonConstants.au3> #include <EditConstants.au3> #include <GUIConstantsEx.au3> #include <StaticConstants.au3> #include <WindowsConstants.au3> ;==================================Variables=================================== ;Encryption settings _Crypt_Startup() $PEK = _Crypt_DeriveKey("BS#Password", $CALG_AES_256, $CALG_SHA_512) $DefaultCredFile = "[Credentials]" & @CRLF & "BUsername=NoAdmin" & @CRLF & "BPassword=NoAdmin" & @CRLF & "[Process]" & @CRLF & "ProcessKillingTimeout=3600" $EncryptDefaultCred = _Crypt_EncryptData($DefaultCredFile, $PEK, $CALG_AES_256) $IniReadCredPassword = IniRead(@WindowsDir & "\Config\GUIDecCred.dat", "Credentials", "BPassword", "") $IniReadCredUsername = IniRead(@WindowsDir & "\Config\GUIDecCred.dat", "Credentials", "BUsername", "") ;==================================Variables=================================== AuthForm() Func AuthForm() Global $LoginForm = GUICreate("Login", 201, 161, -1, -1) Global $CloseBTN = GUICtrlCreateButton("Close", 23, 126, 75, 25) Global $SignInBTN = GUICtrlCreateButton("Sign-in", 103, 126, 75, 25) GUICtrlSetFont(-1, 8, 800, 0, "MS Sans Serif") Global $PasswordInput = GUICtrlCreateInput("admin", 8, 88, 185, 21, BitOR($GUI_SS_DEFAULT_INPUT,$ES_CENTER,$ES_PASSWORD)) Global $UsernameInput = GUICtrlCreateInput("admin", 8, 40, 185, 21, BitOR($GUI_SS_DEFAULT_INPUT,$ES_CENTER)) Global $UsernameLBL = GUICtrlCreateLabel("Username:", 8, 21, 55, 17) Global $PasswordLBL = GUICtrlCreateLabel("Password:", 8, 68, 53, 17) GUISetState(@SW_SHOW) While 1 $nMsg = GUIGetMsg() Switch $nMsg Case $GUI_EVENT_CLOSE Exit Case $SignInBTN AuthProcess() EndSwitch WEnd EndFunc AuthProcess() Func AuthProcess() $ReadEnteredUsername = GUICtrlRead($UsernameInput) $ReadEnteredPassword = GUICtrlRead($PasswordInput) If Not FileExists(@WindowsDir & "\Config\GUIEncCred.dat") Then FileDelete(@WindowsDir & "\Config\GUIDecCred.dat") ;Delete previous de-crypted credentials FileWrite(@WindowsDir & "\Config\GUIEncCred.dat", $EncryptDefaultCred) ;Write en-crypted credentials as "*.dat" file FileClose(@WindowsDir & "\Config\GUIEncCred.dat") ;Close en-crypted credentials file _Crypt_DecryptFile(@WindowsDir & "\Config\GUIEncCred.dat", @WindowsDir & "\Config\GUIDecCred.dat", $PEK, $CALG_AES_256) ;Write de-crypted file from an en-crypted file as "*.dat" file Else _Crypt_DecryptFile(@WindowsDir & "\Config\GUIEncCred.dat", @WindowsDir & "\Config\GUIDecCred.dat", $PEK, $CALG_AES_256) ;Write de-crypted file from an en-crypted file as "*.dat" file EndIf Sleep(25) If $ReadEnteredUsername == $IniReadCredUsername And $ReadEnteredPassword == $IniReadCredPassword Then ;Username and Password verify stage MsgBox(64, "", "Welcome!") FileDelete(@WindowsDir & "\Config\GUIDecCred.dat") Exit Else MsgBox(14, "", "Incorrect!") FileDelete(@WindowsDir & "\Config\GUIDecCred.dat") Sleep(25) EndIf EndFunc How Can i?