Java

PBKDF2 - Derive Key from Password

See more Encryption Examples

Demonstrates how to derive a symmetric encryption key from a password using PBKDF2. Java

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[])
  {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkCrypt2 crypt = new CkCrypt2();

    String pw = "password";

    String pwCharset = "utf-8";

    // Such as sha256, sha512
    String hashAlg = "sha256";

    // 16 bytes
    String saltHex = "78578E5A5D63CB0668AB39B21C8637FA";

    int iterationCount = 100000;

    // Derive a 256-bit key from the password.
    int outputBitLen = 256;

    // 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 = "hex";

    String hexKey = crypt.pbkdf2(pw,pwCharset,hashAlg,saltHex,iterationCount,outputBitLen,enc);

    System.out.println(hexKey);

    // Sample output:
    // AE96E261E32792D0FD6F0E72F8E872D046F7DB4C1FA7C83892EC73C49F461B70
  }
}