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PBKDF2 - Derive Key from Password

Demonstrates 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

 Chilkat Java Library Downloads for Windows, Linux, and MAC OS X

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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