wbi、av2bv、bv2av 的 c++ 实现 (#1035)
* + wbi 添加 c++ demo * + bv<-->av 算法 c++ 实现 * + App API 签名的 C++ 实现
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@@ -23,7 +23,7 @@
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## Demo
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该 Demo 提供 [Python](#Python) 和 [Java](#Java) 和 [TS/JS](#TypeScript/JavaScript) 和 [Swift](#Swift) 语言例程
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该 Demo 提供 [Python](#Python)、[Java](#Java)、[TS/JS](#TypeScript/JavaScript)、[Swift](#Swift)、[C++](#CplusPlus) 语言例程
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使用 appkey = `1d8b6e7d45233436`, appsec = `560c52ccd288fed045859ed18bffd973` 对如下 `params` 参数进行签名
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@@ -214,3 +214,76 @@ print(signResult)
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输出结果为:01479cf20504d865519ac50f33ba3a7d
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### CplusPlus
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需要 c++ 23 标准库,[cpr](https://github.com/libcpr/cpr)、[cryptopp](https://github.com/weidai11/cryptopp)、[nlohmann/json](https://github.com/nlohmann/json) 等依赖
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```c++
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#include <print> // std::println
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/// thrid party libraries
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#include <cpr/cpr.h> // cpr::util::urlEncode()
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#include <cryptopp/md5.h>
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#include <cryptopp/hex.h>
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#include <nlohmann/json.hpp>
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/*
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* 注意,假定不会发生错误!
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*/
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/* 获取 md5 hex(lower) */
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std::string Get_md5_hex(const std::string &Input_str) {
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CryptoPP::Weak1::MD5 hash;
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std::string md5_hex;
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CryptoPP::StringSource ss(Input_str, true,
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new CryptoPP::HashFilter(hash,
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new CryptoPP::HexEncoder(
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new CryptoPP::StringSink(md5_hex)
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)
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)
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);
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std::ranges::for_each(md5_hex, [](char &x) { x = std::tolower(x); });
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return md5_hex;
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}
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/* 将 json 转换为 url 编码字符串 */
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std::string Json_to_url_encode_str(const nlohmann::json &Json) {
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std::string encode_str;
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for (const auto &[key, value]: Json.items()) {
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encode_str.append(key).append("=").append(cpr::util::urlEncode(value.is_string() ? value.get<std::string>() : to_string(value))).append("&");
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}
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// remove the last '&'
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encode_str.resize(encode_str.size() - 1, '\0');
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return encode_str;
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}
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std::string App_sign(nlohmann::json &Params, const std::string &App_key, const std::string &App_sec) {
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Params["appkey"] = App_key;
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Params["sign"] = Get_md5_hex(Json_to_url_encode_str(Params) + App_sec);
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return Json_to_url_encode_str(Params);
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}
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int main() {
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nlohmann::json Params;
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Params["id"] = 114514;
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Params["str"] = "1919810";
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Params["test"] = "いいよ,こいよ";
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constexpr auto App_key = "1d8b6e7d45233436";
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constexpr auto App_sec = "560c52ccd288fed045859ed18bffd973";
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std::string sign = App_sign(Params, App_key, App_sec);
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std::println("{}", to_string(Params));
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std::println("{}", sign);
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}
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```
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```text
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{"appkey":"1d8b6e7d45233436","id":114514,"sign":"01479cf20504d865519ac50f33ba3a7d","str":"1919810","test":"いいよ,こいよ"}
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appkey=1d8b6e7d45233436&id=114514&sign=01479cf20504d865519ac50f33ba3a7d&str=1919810&test=%E3%81%84%E3%81%84%E3%82%88%EF%BC%8C%E3%81%93%E3%81%84%E3%82%88
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```
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