final byte[] twoBytes = new byte[] { 'A', 'B' };
        final String encoded = Base64Util.encode(twoBytes);
        assertNotNull("Encoded result should not be null", encoded);
        final byte[] decoded = Base64Util.decode(encoded);
        assertEquals("Decoded should have same length", 2, decoded.length);
        assertEquals("First byte should match", twoBytes[0], decoded[0]);

^= 0b10000000 aes.EncryptBlockInternal(&c.b, x[:], x[:]) return x } for len(m) >= aes.BlockSize { subtle.XORBytes(x[:], m[:aes.BlockSize], x[:]) if len(m) == aes.BlockSize { // Final complete block. subtle.XORBytes(x[:], c.k1[:], x[:]) } aes.EncryptBlockInternal(&c.b, x[:], x[:]) m = m[aes.BlockSize:] } if len(m) > 0 { // Final incomplete block. subtle.XORBytes(x[:], m, x[:]) subtle.XORBytes(x[:], c.k2[:], x[:]) x[len(m)] ^= 0b10000000 aes.EncryptBlockInternal(&c.b, x[:], x[:]) } return x } // shiftLeft...

        try (final BufferedInputStream bis = new BufferedInputStream(responseData.getResponseBody())) {
            final byte[] bomBytes = new byte[UTF8_BOM_SIZE];
            bis.mark(UTF8_BOM_SIZE);
            final int size = bis.read(bomBytes);
            if (size < 3 || !isUtf8BomBytes(bomBytes)) {
                bis.reset();
            }
            final InputSource is = new InputSource(bis);