I am trying to implement ARPC generation method 1 and did something like this:--
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SecretKey sk= new SecretKeySpec(key,"DESede");
cipher = Cipher.getInstance("TripleDES/ECB/NoPadding");
cipher.init(Cipher.ENCRYPT_MODE, sk);
int resultLen = cipher.doFinal(data, 0, 8, result, 0);