[QUESTION] ZeroBytePadding with Zero-Ending Input?

[onacit]

It seems that the ZeroBytePadding detects the end with 0.

    @MethodSource({"getArgumentsStream"})
    @ParameterizedTest
    void __one(final BufferedBlockCipher cipher, final CipherParameters params) throws Exception {
        // ------------------------------------------------------------------------------------------------------- plain
//        final var plain = _RandomTestUtils.newRandomBytes(1);
        final var plain = new byte[]{0};
        // ----------------------------------------------------------------------------------------------------- encrypt
        cipher.init(true, params);
        final var encrypted = JinahyaBufferedBlockCipherUtils.processBytesAndDoFinal(cipher, plain);
        // ----------------------------------------------------------------------------------------------------- decrypt
        cipher.init(false, params);
        final var decrypted = JinahyaBufferedBlockCipherUtils.processBytesAndDoFinal(cipher, encrypted);
        // -------------------------------------------------------------------------------------------------------------
        _LogUtils.log(plain, encrypted, decrypted);
        assertThat(decrypted).isEqualTo(plain);
}

    plain:          1, AA==
encrypted:         16, PQFUtQ/fA78CrDl95CTWdQ==
decrypted:          0, 

Is the padding is a general-purpose one?

[dghgit]

Nope, only added under duress, for backwards compatibility. Don't use it in anything new. Ever.