A DESCRIPTION OF THE PROBLEM :
DESKeySpec.isWeak doesn't check negative offset and throws ArrayIndexOutOfBoundsException

ACTUAL -
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 8
at java.base/javax.crypto.spec.DESKeySpec.isWeak(DESKeySpec.java:230)

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    public static void main(String[] args) throws Exception {

        byte[] strongKey = {
            (byte)0x12, (byte)0x34, (byte)0x56, (byte)0x78,
            (byte)0x9A, (byte)0xBC, (byte)0xDE, (byte)0xF0
        };
        try {
            DESKeySpec.isWeak(strongKey, -1);
            System.out.println("Error: Negative offset didn't throw InvalidKeyException");
        } catch (InvalidKeyException e) {

        }
    }
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