Generate Secret Key from Password

The GenEncodedSecretKey method provides a way to produce a secret key from an arbitrarily sized password string. The secret key produced will be equal in bit length to the KeyLength. A given string passed to GenEncodedSecretKey will always produce the same key. (In other words, this is really a hash function and not a random key generator.)

Download Chilkat Java Library

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 component unlock failed");
        return;
    }

    crypt.put_CryptAlgorithm("aes");
    crypt.put_KeyLength(128);

    //  Transform an arbitrary-length password to a secret key
    //  equal in bit-length to the KeyLength:
    String hexKey;
    hexKey = crypt.genEncodedSecretKey("my_password","hex");

    //  Set the secret key:
    crypt.SetEncodedKey(hexKey,"hex");

    //  The hexKey is 16 bytes in length:
    System.out.println(hexKey);
  }
}