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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);
Download: Chilkat .NET Assemblies Chilkat.Crypt2 crypt = new Chilkat.Crypt2(); bool success; success = crypt.UnlockComponent("Anything for 30-day trial"); if (success != true) { MessageBox.Show(crypt.LastErrorText); return; } string hexKey; // http://www.di-mgt.com.au/cryptoKDFs.html#examplespbkdf string pw; pw = "password"; string pwCharset; pwCharset = "ansi"; // Hash algorithms may be: sha1, md2, md5, etc. string hashAlg; hashAlg = "sha1"; // The salt should be 8 bytes: string saltHex; saltHex = "78578E5A5D63CB06"; int iterationCount; iterationCount = 1000; // Derive a 128-bit key from the password. int outputBitLen; 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.) string enc; enc = "hex"; hexKey = crypt.Pbkdf1(pw,pwCharset,hashAlg,saltHex,iterationCount,outputBitLen,enc); textBox1.Text += hexKey + "\r\n"; // The output should have this value: // DC19847E05C64D2FAF10EBFB4A3D2A20 |
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