Method generateRandomIV

Skay_Exp/src/tools/CryptLib.java:264–281

this function generates random string for given length @param length Desired length @return

(int length)

     * * @return
     */
    public static String generateRandomIV(int length)
    {
        SecureRandom ranGen = new SecureRandom();
        byte[] aesKey = new byte[16];
        ranGen.nextBytes(aesKey);
        StringBuffer result = new StringBuffer();
        for (byte b : aesKey) {
            result.append(String.format("%02x", b)); //convert to hex
        }
        if(length> result.toString().length())
        {
            return result.toString();
        }
        else
        {
            return result.toString().substring(0, length);
        }
    }
}