Base64<2>

public static byte[] decode(byte[] data) {
            byte[] bytes;
            byte b1;
            byte b2;
            byte b3;
            byte b4;
            data = discardNonBase64Bytes(data);
            if (data[data.length - 2] == '=') {
                bytes = new byte[(((data.length / 4) - 1) * 3) + 1];
            } else if (data[data.length - 1] == '=') {
                bytes = new byte[(((data.length / 4) - 1) * 3) + 2];
            } else {
                bytes = new byte[((data.length / 4) * 3)];
            }
            for (int i = 0, j = 0; i < (data.length - 4); i += 4, j += 3) {
                b1 = decodingTable[data[i]];
                b2 = decodingTable[data[i + 1]];
                b3 = decodingTable[data[i + 2]];
                b4 = decodingTable[data[i + 3]];
                bytes[j] = (byte) ((b1 << 2) | (b2 >> 4));
                bytes[j + 1] = (byte) ((b2 << 4) | (b3 >> 2));
                bytes[j + 2] = (byte) ((b3 << 6) | b4);
            }
            if (data[data.length - 2] == '=') {
                b1 = decodingTable[data[data.length - 4]];
                b2 = decodingTable[data[data.length - 3]];
                bytes[bytes.length - 1] = (byte) ((b1 << 2) | (b2 >> 4));
            } else if (data[data.length - 1] == '=') {
                b1 = decodingTable[data[data.length - 4]];
                b2 = decodingTable[data[data.length - 3]];
                b3 = decodingTable[data[data.length - 2]];
                bytes[bytes.length - 2] = (byte) ((b1 << 2) | (b2 >> 4));
                bytes[bytes.length - 1] = (byte) ((b2 << 4) | (b3 >> 2));
            } else {
                b1 = decodingTable[data[data.length - 4]];
                b2 = decodingTable[data[data.length - 3]];
                b3 = decodingTable[data[data.length - 2]];
                b4 = decodingTable[data[data.length - 1]];
                bytes[bytes.length - 3] = (byte) ((b1 << 2) | (b2 >> 4));
                bytes[bytes.length - 2] = (byte) ((b2 << 4) | (b3 >> 2));
                bytes[bytes.length - 1] = (byte) ((b3 << 6) | b4);
            }
            return bytes;
        }
        public static byte[] decode(String data) {
            byte[] bytes;
            byte b1;
            byte b2;
            byte b3;
            byte b4;
            data = discardNonBase64Chars(data);
            if (data.charAt(data.length() - 2) == '=') {
                bytes = new byte[(((data.length() / 4) - 1) * 3) + 1];
            } else if (data.charAt(data.length() - 1) == '=') {
                bytes = new byte[(((data.length() / 4) - 1) * 3) + 2];
            } else {
                bytes = new byte[((data.length() / 4) * 3)];
            }