Jump to content

CryptoNG UDF - Cryptography API: Next Generation v1.7.0

   (0 reviews)

1 Screenshot

About This File

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

  • _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
  • _CryptoNG_CreateRSAKeyPair
  • _CryptoNG_DecryptData
  • _CryptoNG_DecryptFile
  • _CryptoNG_EncryptData
  • _CryptoNG_EncryptFile
  • _CryptoNG_EnumAlgorithms
  • _CryptoNG_EnumRegisteredProviders
  • _CryptoNG_EnumKeyStorageProviders
  • _CryptoNG_GenerateRandom
  • _CryptoNG_HashData
  • _CryptoNG_HashFile
  • _CryptoNG_LastErrorMessage
  • _CryptoNG_PBKDF2
  • _CryptoNG_Version


Related Links

Cryptography API: Next Generation - Main Page
Cryptography API: Next Generation - Reference
Cryptography API: Next Generation - Primitives
Cryptography API: Next Generation - Cryptographic Algorithm Providers

What's New in Version v1.7.0


  • v1.7.0 (2020-11-27)
    • Added additional debug logging to startup & shutdown functions.
    • Corrected some function headers.
    • Added new function: _CryptoNG_EnumKeyStorageProviders.
    • Added new internal function: __CryptoNG_NCryptFreeBuffer.
  • v1.6.2 (2020-07-12)
    • Added additional function parameter validation to prevent the issue, reported by RTFC, where passing empty strings to some functions was causing DllStructCreate failures.
    • Reverted all DllStructGetData & DllStructSetData functions back to object-based dot-notation.
  • v1.6.1 (2020-07-11)
    • Reverted all dll struct gets & sets from dot-notation back to DllStructGetData & DllStructSetData.  Using dot-notation caused object initialization errors when value was set to an empty string. (Reported by RTFC)
  • v1.6.0 (2020-07-10)
    • Added the ability to handle data that contains multi-byte character sets. (Reported by RTFC)
    • Removed all AU3CHECK warnings.
    • Added a new example to show the encryption/decryption of strings with multi-byte characters: aes_cbc_encrypt_decrypt_multibyte_example()
    • Added multi-byte characters to the example Word .docx so that the example script that encrypts/decrypts a file shows that it can handle multi-byte characters.
    • The example scripts used to write their output to the console.  The Scite4AutoIt's editor does not display multi-byte characters in the message area.  So the example scripts now sends messages to notepad, which does handle multi-byte characters.  (Best to use a monospaced font in Notepad, like Consolas, so that the message formatting displays correctly)
    • Removed a few examples whose functionality was duplicated in other example scripts.
  • v1.5.5 (2020-05-11)
    • Significant code refactoring.
    • Removed internal __CryptoNG_ConvertByteBuffer function.  It was no longer needed after code refactoring.
    • Add some new constants and a new structure in preparation for authenticated cipher functions.
  • v1.5.0 (2020-04-23)
    • Begun adding algorithm-specific encryption/decryption functions starting with:
      • _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
    • Updated the compiled Help file with the new functions and a new page that lists common named-value constants in the appendix.
    • Added new internal functions to support the new algorithm-specific functions above.
    • Cleaned up a few function headers.
    • Added new examples, for the new functions, to the examples file.
    • Fixed a small bug in how the size of the IV buffer was being determined when doing block cipher encryption and decryption. The length of the IV should match the algorithm's block size, not its key size.  NOTE: The bug did NOT affect the accuracy of the results, just the size of the buffer.
    • Corrected $CNG_KEY_BIT_LENGTH_3DES constant value.  The value was changed from 168 to 192.  168 was the usable/logical bit length but the actual bit length is 192.
  • v1.4.0 (2020-04-03)
    • Added a Help file that includes all of the functions, with examples.  The look & feel of the help file matches the standard AutoIt help files.
    • Updated the _CryptoNG_DecryptFile function to create the output file's path if it doesn't exist.
    • Updated the _CryptoNG_EncryptFile function to create the output file's path if it doesn't exist.
    • Cleaned up several of the function headers.
  • v1.3.0 (2020-02-24)
    • Added _CryptoNG_GenerateRandom and supporting internal function.  (Suggested by PeterPE)
    • Added an example, of how the new _CryptoNG_GenerateRandom function can be implemented, to the CryptoNG_Examples.au3 file.
  • v1.2.0 (2020-01-25)
    • Added _CryptoNG_CreateRSAKeyPair and supporting internal functions, constants, and structures.  (Suggested by Network_Guy)
    • Added an example of how to create RSA key pairs, using _CryptoNG_CreateRSAKeyPair, to the CryptoNG_Examples.au3 file.
  • v1.1.1 (2019-12-03)
    • Corrected the _CryptoNG_PBKDF2 function header.  The syntax line was using the syntax for the _CryptoNG_HashData function.
    • Changed variable name in the _CryptoNG_PBKDF2 function from $iKeyBitLength to $iDKeyBitLength to more aptly describe its meaning, desired key bit length.
  • v1.1.0 (2019-12-02)
    • Cleaned up the __CryptoNG_Startup & __CryptoNG_Shutdown functions. (Suggested by argumentum)
    • Added the ability to specify a desired algorithm provider when encrypting, decrypting, hashing, or using the  PBKDF2 function. (Suggested by mLipok)

User Feedback

You may only provide a review once you have downloaded the file.

There are no reviews to display.

  • Similar Content

    • By RTFC
      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)  
      Technical notes:
      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...
    • By RTFC
      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.
    • By RTFC
      MetaCode offers a way to:
      separate a script's structure from its content remove all redundant definitions (globals and UDFs) change any content (and some structure) combine (new) structure and (new) content into a new script The most useful applications implemented so far are:
      Fast language translation (not just text strings, also variable names and UDF names) Obfuscation (vars and/or UDFs) Script Encryption (conditionals, calls, and macros) Encryption is powerful because the key is not stored anywhere; you can define it to be a user password, macro, environment spec/variable, server response, something you define yourself, or a combination thereof; anything goes, as long as it's not a fixed string or fixed value. More info in the CodeCrypter thread: ?do=embed' frameborder='0' data-embedContent>'?do=embed' frameborder='0' data-embedContent>>
      ?do=embed' frameborder='0' data-embedContent>
      But MetaCode has more potential than that; it allows you to tinker with any type of content separately, then rebuild a new version. So for example, you can have a single script structure and numerous different language modules you just plug in to create a new version in a different language.
      A brief Tutorial is here: MetaCode Tutorial.pdf
      The MCF library itself can be found in the CodeScannerCrypter bundle.
      And a little example how to use it for translating your GUI into a different language:
       UI_Translator.7z (new version that should work with the new version of Google Translate, see post #13 below)
      MCF.au3 is just the library plus the MCFinclude.au3 file you need to include in any script you wish to encrypt.
      There is no GUI here. However, I did write a separate front-end for it called CodeCrypter, which you can find here:
      ?do=embed' frameborder='0' data-embedContent>'?do=embed' frameborder='0' data-embedContent>>
      ?do=embed' frameborder='0' data-embedContent>
      MCF uses output generated by my CodeScanner version 2.8+, which you can find here:
      '?do=embed' frameborder='0' data-embedContent>>
      CodeScanner also depends on MCF.au3 now, as it can now call a few of its functions.
      I should also mention Ward's excellent AES.au3 UDFs used for the encryption and decryption calls,  which is now included in the CodeScannerCrypter bundle (thanks to Ward for allowing to include it). You can find the original (unpatched) version here:
      '?do=embed' frameborder='0' data-embedContent>>
      Note: you can replace the encryption/decryption calls with whatever algorithm you like (hint: the native <Crypt.au3> library is too slow for most purposes, better stick to machine code routines)
      So just to be clear:
      CodeScanner (v2.8+) needs MCF (earlier versions won't work!) CodeCrypter needs MCF (plus anything that MCF needs) MCF itself needs MCFinclude (part of MCF zip) MCF also needs readCSdatadump (part of the CodeScanner package, you need the latest version packaged with CodeScanner v2.8; earlier versions won't work!) both MCF and MCFinclude currently rely on AES.au3 by Ward So you basically need to download the whole bundle for any of it to work.
      If you have any questions, please start by reading the MCF Tutorial and the CodeCrypter FAQ (you can download the latter separately from the CodeCrypter thread).
      Next, read the extensive Remarks sections in MCF.au3, MCFinclude.au3, and CodeCrypter.au3
      If still no joy, then please post. However, I'm not online that often, and logged in to the forum even less, so response may take a while).
    • By Radix

      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?


    • By RestrictedUser
      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? 
  • Create New...