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PBKDF2 - Derive Key from PasswordDemonstrates how to derive a symmetric encryption key from a password using PBKDF2. This example matches the results found at this URL: http://www.di-mgt.com.au/cryptoKDFs.html#examplespbkdf
import com.chilkatsoft.*; public class ChilkatExample { static { try { System.loadLibrary("chilkat"); } catch (UnsatisfiedLinkError e) { System.err.println("Native code library failed to load.\n" + e); System.exit(1); } } public static void main(String argv[]) { CkCrypt2 crypt = new CkCrypt2(); boolean success; success = crypt.UnlockComponent("Anything for 30-day trial"); if (success != true) { System.out.println(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 = 2048; // Derive a 192-bit key from the password. int outputBitLen; outputBitLen = 192; // 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.pbkdf2(pw,pwCharset,hashAlg,saltHex,iterationCount,outputBitLen,enc); System.out.println(hexKey); // The output should have this value: // BFDE6BE94DF7E11DD409BCE20A0255EC327CB936FFE93643 } } |
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