Function Base64EncodeBufSize

library/cpp/string_utils/base64/base64.h:96–98

encode

//encode
constexpr size_t Base64EncodeBufSize(const size_t len) noexcept {
    return (len + 2) / 3 * 4 + 1;
}

char* Base64Encode(char* outstr, const unsigned char* instr, size_t len);
char* Base64EncodeUrl(char* outstr, const unsigned char* instr, size_t len);