public String encryptString(String sPlainText,Random rndGen){
  long lCBCIV=rndGen.nextLong();
  return encStr(sPlainText,lCBCIV);
}

public String encryptString ( String sPlainText , Random rndGen ) { long lCBCIV = rndGen . nextLong ( ) ; return encStr ( sPlainText , lCBCIV ) ; }
encrypts a string ( treated in unicode )
