61         result += base64Encoder[input.at(index) >> BASE64_SHIFT_HIBYTE];  in Encode()
62         uint8_t code = (input.at(index++) & BASE64_MASK1) << BASE64_SHIFT;  in Encode()
64             result += base64Encoder[code | (input.at(index) >> BASE64_SHIFT)];  in Encode()
65             code = (input.at(index++) & BASE64_MASK2) << BASE64_SHIFT_HIBYTE;  in Encode()
67                 result += base64Encoder[code | (input.at(index) >> BASE64_SHIFT_LOBYTE)];  in Encode()
68                 result += base64Encoder[input.at(index++) & BASE64_MASK3];  in Encode()
91         uint8_t ch1 = base64Decoder[static_cast<uint8_t>(input.at(index++))];  in Decode()
92         uint8_t ch2 = base64Decoder[static_cast<uint8_t>(input.at(index++))];  in Decode()
97         if (input.at(index) == '=') {  in Decode()
100         uint8_t ch3 = base64Decoder[static_cast<uint8_t>(input.at(index++))];  in Decode()
105         if (input.at(index) == '=') {  in Decode()
108         uint8_t ch4 = base64Decoder[static_cast<uint8_t>(input.at(index++))];  in Decode()