![]() |
Chilkat • HOME • Android™ • AutoIt • C • C# • C++ • Chilkat2-Python • CkPython • Classic ASP • DataFlex • Delphi DLL • Go • Java • Node.js • Objective-C • PHP Extension • Perl • PowerBuilder • PowerShell • PureBasic • Ruby • SQL Server • Swift • Tcl • Unicode C • Unicode C++ • VB.NET • VBScript • Visual Basic 6.0 • Visual FoxPro • Xojo Plugin
(Visual FoxPro) Manually Duplicate SetSecretKeyViaPasswordDemonstrates how to duplicate the password string to binary secret key computation of SetSecretKeyViaPassword.
LOCAL loCrypt LOCAL lcPassword LOCAL loSb LOCAL lcPasswordBase64 * This example assumes the Chilkat API to have been previously unlocked. * See Global Unlock Sample for sample code. * For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Crypt2') loCrypt = CreateObject('Chilkat.Crypt2') * The password string is transformed to a binary secret key by computing the * MD5 digest (of the utf-8 password) to obtain 16 bytes. * If the KeyLength is greater than 16 bytes, then the MD5 digest of the Base64 encoding * of the utf-8 password is added. A max of 32 bytes of key material is generated, and * this is truncated to the actual KeyLength required. loCrypt.CryptAlgorithm = "aes" loCrypt.KeyLength = 256 lcPassword = "this is my password" loCrypt.SetSecretKeyViaPassword(lcPassword) * Examine the resulting SecretKey in hex: ? "Computed Secret Key = " + loCrypt.GetEncodedKey("hex") * Now perform the same computation manually: * For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder') loSb = CreateObject('Chilkat.StringBuilder') loCrypt.HashAlgorithm = "md5" loCrypt.Charset = "utf-8" loCrypt.EncodingMode = "hex" loSb.Append(loCrypt.HashStringENC(lcPassword)) lcPasswordBase64 = loCrypt.EncodeString(lcPassword,"utf-8","base64") loSb.Append(loCrypt.HashStringENC(lcPasswordBase64)) ? "Manually Computed = " + loSb.GetAsString() * The output is: * Computed Secret Key = 210D53992DFF432EC1B1A9698AF9DA16C7E90518F90E24828F78EC9E0A413B36 * Manually Computed = 210D53992DFF432EC1B1A9698AF9DA16C7E90518F90E24828F78EC9E0A413B36 RELEASE loCrypt RELEASE loSb |
© 2000-2025 Chilkat Software, Inc. All Rights Reserved.