Java Cipher encrypt
import javax.crypto.Cipher; import javax.crypto.SecretKey; import javax.crypto.spec.SecretKeySpec; public class Main { public static void main(String[] args) throws Exception { byte[] data = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 }; // create a 64 bit secret key from raw bytes SecretKey key64 = new SecretKeySpec(new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 }, "Blowfish"); // create a cipher and attempt to encrypt the data block with our key Cipher c = Cipher.getInstance("Blowfish/ECB/NoPadding"); c.init(Cipher.ENCRYPT_MODE, key64); c.doFinal(data);//from w ww . j ava2 s .com System.out.println("64 bit test: passed"); // create a 192 bit secret key from raw bytes SecretKey key192 = new SecretKeySpec(new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 }, "Blowfish"); // now try encrypting with the larger key c.init(Cipher.ENCRYPT_MODE, key192); c.doFinal(data); System.out.println("192 bit test: passed"); } }