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(PHP ActiveX) PBKDF1 - Derive Key from PasswordDemonstrates how to derive a symmetric encryption key from a password using PBKDF1. This example matches the results found at this URL: http://www.di-mgt.com.au/cryptoKDFs.html#examplespbkdf It also matches the output produced by the .NET Framework using this C# code: byte[] salt = new byte[] { 0x78, 0x57, 0x8E, 0x5A, 0x5D, 0x63, 0xCB, 0x06 }; PasswordDeriveBytes cdk = new PasswordDeriveBytes("password", salt); cdk.IterationCount = 1000; cdk.HashName = "SHA1"; // generate a 16-byte key byte[] key = cdk.GetBytes(16);
<?php // 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 new COM('Chilkat_9_5_0.Chilkat.Crypt2') $crypt = new COM("Chilkat.Crypt2"); // http://www.di-mgt.com.au/cryptoKDFs.html#examplespbkdf $pw = 'password'; $pwCharset = 'ansi'; // Hash algorithms may be: sha1, md2, md5, etc. $hashAlg = 'sha1'; // The salt should be 8 bytes: $saltHex = '78578E5A5D63CB06'; $iterationCount = 1000; // Derive a 128-bit key from the password. $outputBitLen = 128; // The derived key is returned as a hex or base64 encoded string. // (Note: The salt argument must be a string that also uses // the same encoding.) $enc = 'hex'; $hexKey = $crypt->pbkdf1($pw,$pwCharset,$hashAlg,$saltHex,$iterationCount,$outputBitLen,$enc); print $hexKey . "\n"; // The output should have this value: // DC19847E05C64D2FAF10EBFB4A3D2A2 ?> |
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