Java

ARC4 PRNG (Pseudo Random Number Generator)

See more Encryption Examples

Uses the ARC4 stream encryption algorithm as a pseudo random number generator. 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 requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkCrypt2 crypt = new CkCrypt2();

    // Set the encryption algorithm to ARC4:	
    crypt.put_CryptAlgorithm("arc4");

    // We want the encrypted output to be a hex-encoded string.
    crypt.put_EncodingMode("hex");

    String key = "000102030405060708090A0B0C0D0E0F";
    String data = "12345678";

    // Key length is 128 bits in this example.
    crypt.put_KeyLength(128);
    crypt.SetEncodedKey(key,"hex");

    // Generate 16 "random" 8-byte blocks, encoded as hex strings.
    // This example will generate the identical output each time
    // it is run.
    String cipherHex;
    int i;
    for (i = 0; i <= 15; i++) {
        cipherHex = crypt.encryptStringENC(data);
        System.out.println(data);
        System.out.println(cipherHex);
        data = cipherHex;
        }
  }
}