问题

#include <stdlib.h>
#include <unistd.h>
#include <wolfssl/options.h>
#include <wolfssl/wolfcrypt/settings.h>
#include <wolfssl/ssl.h>
#include <wolfssl/wolfcrypt/sp.h>//cannot to include,why?
#include <wolfssl/wolfcrypt/sp_int.h>
using namespace std;
int main(int argc, char* arfv[]) {
    mp_int k;
    mp_init(&k);
    return 0;
}

I have configured the environment. Without mp_init(&k), it can be compiled. I didn't find how to use mp_int in the WolfSSL document.

I didn't find how to use mp_int in the WolfSSL document. I want to know how to use mp_init and mp_int to calculate in WolfSSL.

<details>
<summary>英文:</summary>

#include <stdlib.h>
#include <unistd.h>
#include <wolfssl/options.h>
#include <wolfssl/wolfcrypt/settings.h>
#include <wolfssl/ssl.h>
#include <wolfssl/wolfcrypt/sp.h>//cannot to include,why?
#include <wolfssl/wolfcrypt/sp_int.h>
using namespace std;
int main(int argc, char* arfv[]) {
mp_int k;
mp_init(&k);
return 0;
}

I have configured the environment.without `mp_init(&k)`, it can be compiled. I didn't find how to use mp_int in wolfssl document


I didn't find how to use mp_int in wolfssl document.i want to know how to use mp_init and mp_int to calculate in wolfssl

</details>


# 答案1
**得分**: 0

为了直接使用MP API，您需要配置库以使用配置定义`WOLFSSL_PUBLIC_MP`将它们公开。

以下是示例链接:
https://github.com/wolfSSL/wolfssl-examples/blob/master/ecc/ecc-params.c

<details>
<summary>英文:</summary>

@zihao wang

In order to use the MP API directly, you&#39;ll need to configure the library to expose them as public using the configuration define `WOLFSSL_PUBLIC_MP`

Here is an example:
https://github.com/wolfSSL/wolfssl-examples/blob/master/ecc/ecc-params.c

</details>