String keydata = "BB3F730E11F4F02CC4EFB8FF18AF37AA";
The two keys were of length 16:
String left = keydata.substring(0, 16);
String right = keydata.substring(16, 32);
Using Apache Codec, extract the byte data:
byte[] leftKey = Hex.decodeHex(left.toCharArray());
byte[] rightKey = Hex.decodeHex(right.toCharArray());
And finally, get the cipher:
Cipher cipher = Cipher.getInstance("DES");
DESKeySpec desKeySpec = new DESKeySpec(leftKey);
SecretKeySpec secretKeySpec = new SecretKeySpec(desKeySpec.getKey(), "DES");
And finally, init the cipher:
cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
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