Chilkat HOME .NET Core C# Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi ActiveX Delphi DLL Go Java Lianja Mono C# Node.js Objective-C PHP ActiveX PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift 2 Swift 3,4,5... Tcl Unicode C Unicode C++ VB.NET VBScript Visual Basic 6.0 Visual FoxPro Xojo Plugin
(SQL Server) 2-Key Triple DES (112 bits)Demonstrates 2-Key Triple DES encryption (112-bit 3DES encryption).
// Important: See this note about string length limitations for strings returned by sp_OAMethod calls. // CREATE PROCEDURE ChilkatSample AS BEGIN DECLARE @hr int -- This example requires the Chilkat API to have been previously unlocked. -- See Global Unlock Sample for sample code. DECLARE @crypt int EXEC @hr = sp_OACreate 'Chilkat_9_5_0.Crypt2', @crypt OUT IF @hr <> 0 BEGIN PRINT 'Failed to create ActiveX component' RETURN END -- Specify 3DES for the encryption algorithm: EXEC sp_OASetProperty @crypt, 'CryptAlgorithm', '3des' EXEC sp_OASetProperty @crypt, 'CipherMode', 'ecb' -- For 2-Key Triple-DES, use a key length of 128 -- (Given that each byte's msb is a parity bit, the strength is really 112 bits). EXEC sp_OASetProperty @crypt, 'KeyLength', 128 -- Pad with zeros EXEC sp_OASetProperty @crypt, 'PaddingScheme', 3 -- EncodingMode specifies the encoding of the output for -- encryption, and the input for decryption. -- It may be "hex", "url", "base64", or "quoted-printable". EXEC sp_OASetProperty @crypt, 'EncodingMode', 'hex' -- Let's create a secret key by using the MD5 hash of a password. -- The Digest-MD5 algorithm produces a 16-byte hash (i.e. 128 bits) EXEC sp_OASetProperty @crypt, 'HashAlgorithm', 'md5' DECLARE @keyHex nvarchar(max) EXEC sp_OAMethod @crypt, 'HashStringENC', @keyHex OUT, 'secretPassword' -- Set the encryption key: EXEC sp_OAMethod @crypt, 'SetEncodedKey', NULL, @keyHex, 'hex' -- Encrypt DECLARE @encStr nvarchar(max) EXEC sp_OAMethod @crypt, 'EncryptStringENC', @encStr OUT, 'The quick brown fox jumped over the lazy dog' PRINT @encStr -- Now decrypt: DECLARE @decStr nvarchar(max) EXEC sp_OAMethod @crypt, 'DecryptStringENC', @decStr OUT, @encStr PRINT @decStr EXEC @hr = sp_OADestroy @crypt END GO |
© 2000-2024 Chilkat Software, Inc. All Rights Reserved.